OPERATION MANUAL
MST2000 SERIES
Loop Powered Multivariable SMARTFLOW® Transmitter
For English and Metric Unit Versions
SeeSection15forapprovalinformation
Let us point you in the right direction.
Eng lish Unit Soft ware Release H03
Met ric Unit Soft ware Re lease HM3
CSA Approvals
MA37-2000-00, November 2001
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OPERATION MANUAL
This manual is designed to optimize the performance of the MST2000 Series Loop Powered
Multivariable SMARTFLOW® Transmitter. Theendusershouldreadandreviewitcarefullybeforein-
stalling,usingormaintainingthetransmitter.Theinformationcontainedinthismanualcorresponds
to the re vi sion level of the soft ware shipped with your MST2000. You can down load a copy of the lat-
est ver sion of this man ual along with other in for ma tion from our web site.
IMPORTANT: ThismanualcoversboththeENGLISHandMETRICUnitVersionsoftheMST2000oper-
atingsoftware. TheENGLISHorMETRICconfigurationmustbeselectedatthetimeoforderand con-
figured at the factory. ENGLISH or METRIC UNIT CONFIGURATION IS NOT FIELD SELECTABLE.
It is the desire of Thermo Brandt Instruments that the MST2000 be setup and used as effec-
tively and efficientlyaspossible. Ifyouhaveanyquestionsorconcernspleasecontactyour
Thermo Brandt representative or Thermo Brandt Instruments at the following:
Telephone:
Facsimile:
Web Address:
E-mail:
(919) 552-9011. Customer Service:Extension28
(919) 552-9716
TABLE OF CONTENTS
Page
Model Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MST2100 Dimensional Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MST2400 Dimensional Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Section 1, Mounting and Process Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Section 2, Continuous Purge Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Section 3, Integral “High Pressure” Blowdown System Option . . . . . . . . . . . . . . . . . . . 6
Section 4, Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 5, LCD Display and IntegralKeyPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 6, MST2000 OperationalModesandStartup. . . . . . . . . . . . . . . . . . . . . . . . 8
Section 7, Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Section 8, Program Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Section 9, Alarm ProgrammingInformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Section 10, Formulas & Conversion Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Section 11, Test Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Section 12, Optional Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Section 13, MST2000 HART®CommunicationsInformation . . . . . . . . . . . . . . . . . . . . 23
Section 14, Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Section 15, CSA Hazardous Area Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Section 16, CalibrationoftheMST2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
PRODUCT OVERVIEW
Thermo Brandt Instruments’ MST2000 Se ries Loop Powered Multivariable SMARTFLOW® Trans-
mitter providesthenecessaryversatilityrequiredtosatisfytoday’sdemandingindustrialprocess ap-
plications. With programmable constants, input/output options and communication features the
MST2000willconcurrentlymeasureand/orapplythenumerousprocessvariablesforatruemass flow
measurement.
TheMST2000’sconfigurationisuserfriendlyandisaccomplishedthroughtheintegralkeyp ad (no ex-
ternalsoftwareorhardwareisrequired).TheMST2000iscapableofproducinganddisplayingsignals
forDifferentialPressureorforFlow.Optionalinput,digitalI/Oandcommunicationmod ules can be in-
stalled at the factory or in the field as required.
Page 4
MST2000 Multivariable SMARTFLOW® Transmitter
Brandt Instruments, Inc.
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OPERATION MANUAL
MODEL NUMBER
SERIES: LOOP POWERED MULTIVARIABLE SMARTFLOWTM TRANSMITTER
MST21 = MST2100, NEMA 1 Panel Mount En clo sure, Dif fer en tial Pres sure Con fig u ra tion & Non-isolated 4 Wire RTD In put Stan dard. u
MST24 =MST2400, NEMA4X, FiberglassEnclosure, DifferentialPressureConfiguration&Non-isolated 4 Wire RTD In put Stan dard. u
ISOLATEDINPUTMODULE: AbsolutePressureTransmitter
0 = None
1 = Iso lated In put Mod ule: Ac cepts 4-20mA in put sig nal from an Ex ter nal Ab so lute Pres sure Trans mit ter. u
2 = Isolated Input Module with Integral Absolute Pressure Transmitter, 0-25 PSI (0-1.7 bar) range standard. Consult factory for
other ranges. MST2400 only. Requires Integral 24V Power Supply. See Output option 2 below.
ISOLATE
D INPUT
MODULE:TemperatureTransmitter
0 = None
CERTIFICATION
0 = None
2 = CSA Ap proved Di vi sion 2.
1 = CSA Ap proved In trin sically Safe
Review Sec tion 15 of this man ual for ap proval in for ma tion.
COMMUNICATIONS
MODULE
0 = None
H = HART® CommunicationsModule. u
DIGITAL I/O
MODULE
0 = None
D = Dig i tal I/O Mod ule with 1 In put, 1 Out puts.v
PRESSURE RANGES
1S =StandardRange1Max.Span:0-0.10”(0to2.54mm)W.C. Turndownto0.010”(0.254mm)W.C.(10:1).
2S=StandardRange2Max. Span:0-0.25”(0-6.35mm)W.C. Turndownto0.025“(0.635mm)W.C. (10:1).
3S = Stan dard Range 3 Max. Span: 0-1.00“ (0-25.4mm) W.C. Turn down to 0.10“ (2.54mm) W.C. (10:1).
4S=StandardRange4Max. Span:0-4.00”(0-101.6mm)W.C. Turndownto0.40”(10.16mm) W.C. (10:1).
5S =StandardRange5Max. Span:0-16.0”(0-406.4mm)W.C. Turndownto1.60”(40.64mm)W.C. (10:1).
6S=StandardRange6Max. Span:0-50.0”(0-1270.0mm)W.C. Turndownto5.00”127.0mm)W.C. (10:1).
CR = Com pound RangeConsultfactory. SupplydesiredCompoundRange.
All max i mum pres sure ranges have a turn down of 10:1.
Spec ify Pres sure Range # in model num ber (ex am ple 1S or CR).
StandardRanges: MST2000willbecalibratedatMaximumSpan.IfanInitialRangeSettingisdesired,supply with
or der and unit will be shipped with this Ini tial Range pre set. (Ex am ple: 3S set to 0 to 0.5” W.C.).
CompoundRanges:MST2000willbecalibratedatdesiredCompoundRange. Supplycompoundrangewithorder
(ex am ple: -0.25 to +0.25” W.C.).
All spans will be cal i brated in Inches of W.C. Other Units of mea sure will be con verted to Inches of W. C.
OUTPUT & VERSION. See Note Be low.
1 = 4-20mA Out put. Eng lish Units Ver sion. u
2 = 4-20mA Out put with In te gral 120VAC to 24VDC Power Sup ply. 120VAC
Source Re quired. MST2400 only. Eng lish Units Ver sion.
3 = 4-20mA Out put. Met ric Units Ver sion. u
4 = 4-20mA out put with In te gral 120VAC to 24VDC Power Sup ply. 120VAC Source
Re quired. MST2400 only. Met ric Units Ver sion.
OPTIONS
0 = None
B = In te gral High Pres sure Blowdown Sys tem. MST2400 Only. Re quires
Dig i tal I/O Mod ule. 120VAC source re quired. Reg u lated air sup plied to
100 PSIG. En clo sure size will change. Con sult Fac tory for spec i fi ca tions
andavailability.
P = Con tin u ous Purge to Flowmeter. MST2400 Only. Spans of 0.25” W.C.
(6.35mmWC) or greater. A fil tered air sup ply source of 20 to 100 PSI
(1.4 to 6.9 bar) is re quired. u
ACCESSORIES
0 = None
P = Pipe Mount. MST2400 Only.
uDenotesoptions&featuresavailablewithCSAIntrinsicallySafe
andDivision2hazardousareaapprovals.
v
De notes op tions & fea tures avail able with CSA Di vi sion 2 Ap-
provals Only.
Review Section15, forCSAapprovalinformation.
MST24
1
1
1
H
D
2S
1
0
P
MST2000’s with Eng lish or Met ric Unit Ver sions are avail able but must be se lected at time of orderandconfiguredat
the fac tory. IT IS NOT A FIELD SELECTABLE OPTION.
Brandt Instruments, Inc.
MST2000 Multivariable SMARTFLOW® Transmitter
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OPERATION MANUAL
SPECIFICATIONS
FUNCTIONAL SPECIFICATIONS
Service:
Clean, dry, non-corrosive Air or Gas. Other me dia may be pos si ble with the use of the Con-
tinuousPurgeoption.Consultfactory.
PressureRanges:
StandardPressureRanges:
Range 1: 0 to 0.10” (0 TO 2.54mm) W.C.
Range 4: 0 to 4.0” (0 to 101.6mm) W.C.
Range 2: 0 to 0.25” (0 to 6.35mm) W.C.
Range 3: 0 to 1.0” (0 to 25.4mm) W.C.
Range 5: 0 to 16.0” (0 to 406.4mm) W.C.
Range 6: 0 to 50.0” (0 to 1270.0mm) W.C.
OutputSignals:
Analog:4-20 mA sig nal (Max. Loop re sis tance = 615 Ohms @ 24 VDC) is user pro gram ma-
bletoDifferentialPressureorFlowParameters. Externalinputsorprogrammedconstants
fortemperatureandabsolutepressurealongwithconstantsforEffectiveAreaandStandard
Den sity, are nec es sary for a true flow mea sure ment.
OptionalDigital:One(1)optionaldigital(opencollector)outputavailable.Activationpro-
gram ma ble by end user.
Communications:
Optional:digitalHART® Communicationsmodule. SeeSection13, page23forHART® com-
municationinformation.
Alarms:
Display:
Programmablehard ware alarms, underrange and overrange.
High Con trast, 2 line, al pha nu meric LCD with -20 to 150o F (-28 to 66oC)operatingtemper-
ature.
PowerSupplyRequired:
24 to 40 VDC loop power, min i mum 11 volts re quired at in puts.
ReversePolarityProtection: Yes
Turn On Time:
4seconds(maximum).
Operating:-40 to 150oF (-40 to 66oC)
TemperatureLimits:
Overpressure Limits:
Storage:-40 to 180o F (-40 to 82oC)
ProofPressure: 10 PSID (0.7 Bar)
Burst Pres sure: 50 PSID (3.45 Bar)
Max Line Pres sure: 50 PSIG (3.45 Bar).
Damping:
Stan dard Time Con stant: 500 mSec. Additionaldampingadjustableviaintegralkeypad
from 0.5 to 5 Sec onds in 0.5 sec ond in cre ments.
HumidityLimits:
Inputs:
100% Non-condensing, (MST2400 Only).
Standard: Non-isolated, 4 wire RTD in put con nec tion.
Optional4-20mAIsolatedInputs: In put ranges are soft ware rangeable.
& ExternalTemperature:4-20mAInput
& ExternalAbsolutePressure: 4-20 mA In put
OptionalDigitalInput:Oneoptionaldigital(TTL level) in put is avail able.
PERFORMANCE SPECIFICATIONS
Accuracy:
For spans from 40% to 100% of max i mum range with TD of 1:1 to 2.5:1 then ac cu racy =
0.15% of Re-ranged Span.
For spans from 20% to 39% of max i mum range with TD of 2.5:1 to 5:1 then accuracy=
(0.15 + 0.005 X TD)% of Re-ranged Span.
For spans from 10% to 19% of max i mum range with TD of 5:1 to 10:1 then accuracy=
(0.15 + 0.010 X TD)% of Re-ranged Span.
& TD = Max i mum Range / Re-ranged Span
Stability:
0.1% of Max i mum Range / 12 Months
AmbientTemperature:
Zero: No Ef fect Span: Less than 0.001% of Re-ranged Span per Deg F. Cor rected by in-
ternaltemperaturesensor.
MountingPositionEffect:
VibrationEffect:
MinoreffectonZero. Correctedbysetupparameters.
Less than 0.2% of Max i mum Range / g, 10-130 Hz.
PHYSICAL SPECIFICATIONS:
EnclosureTypes:
MST2100: NEMA1,AnodizedAluminum.
MST2100: 1/8” NPTF
MST2400: NEMA 4X, Fi ber glass.
ProcessConnections:
Electrical Connections:
MST2400: 1/4” NPTF Stain less Steel
MST2100 & MST2400: Cage Clamp style ter mi nal block. 12-24 AWG wire size.
MST2400: ½”Liquid-Tightflexibleconduitconnections.
Weight:
MST2100: 2.5 . (1.14 kg)
MST2400: 8.0 lbs. (3.63 kg)
Page 6
MST2000 Multivariable SMARTFLOW® Transmitter
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OPERATION MANUAL
DIMENSIONS
Brandt Instruments, Inc.
MST2000 Multivariable SMARTFLOW® Transmitter
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MOUNTING AND PROCESS CONNECTIONS
OPERATION MANUAL
1. MOUNTING AND PROCESS CONNECTIONS
The MST2000 can be mounted in any direction. There may be a minor effect on Zero
that can be corrected by the setup parameters.
1.1 MST2100: NEMA 1 Enclosure
A. Review the dimensional drawing on page 5.
B. Pro cess con nec tions are via 1/8" NPT fe male ports lo cated on the bot tom of the hous ing. The high
pressure port is la beled “HIGH”, the Low pres sure port is la beled “LOW” on the mount ing plate.
1.2 MST2400: NEMA 4X Enclosure
A. Review the dimensional drawing on page 5.
B. With out a con tin u ous purge op tion, pro cess air should be non-corrosive and dry. If a con tinuous
purge option is installed please review section 2 on the continuous purge. The continuous purge
must be balanced.
C. Pro cess con nec tions are via 1/4" NPT fe male ports lo cated on the bot tom of the en clo sure. The high
pressure port is la beled “HIGH”, the Low pres sure port is la beled “LOW”.
1.3 Three Valve Manifold
A. It is recommended that a three valve manifoldbeinstalledintheprocess, unless a continuous
purge is installed . A three valve manifold is available from the factory. It is installed in the process
lines to isolate the processsignalduringinstallationand/orremovaloftheMST2000thus preventing
possible trans ducer over-pressurization and to zero trans mit ter.
þNotes:
þNote: MST2000 DP sen-
sormaximumoperating
static pres sure is 25
PSID.
& Be fore con nec tions are made blow out pro cess lines throughly.
& It is rec om mended that pipe thread tapes not be used on pneu matic pip ing.
& Soap test all joints and fit tings for leaks.
& Pro cess lines should be the same di am e ter and ap prox i mately the same length.
2. CONTINUOUS PURGE OPTION
TheMST2400canbeorderedwithaContinuous
PurgeOption.Thisoptionsuppliesacontinuous
pneumatic purge to a Thermo Brandt pitot flow
sen sor to keep the sens ing ports free from plug-
gingduringoperation.TherearePurgeBalance
adjustments located on the front panel which
provideforthezeroingofprocessairresistance.
If the Continuous Purge Option has been or-
dered, please read the following setup instruc-
tions. TheContinuousPurgeOptionmustbe
balanced once the process is connected to
the MST2400.
A 1/4" NPT fe male air sup ply port is pro vided on
the bot tom of the en clo sure for the Purge.
An internalfilter is sup plied with the unit, but air
supply should also be filtered and regulated.
þPROCESS LINE LENGTH & SIZE
& When a con tin u ous purge op tion is used, the pro cess
lines (Hi and Low lines) must be the same di am e ter
(pref er a bly 3/8" or larger) and the length of each line
should be the same within +/- 5%.
þIMPORTANT:
& The Con tin u ous purge op tion air sup ply should be only clean, in stru ment qual ity air and should be greater than 20
psi (1.4 bar) and not ex ceed 100 psi (6.9 bar). A pre-filter should be in stalled in the sup ply line if the air qual ity is
sus pect. A 5 mi cron fil ter and a 0.3 mi cron co ales cent fil ter are rec om mended. Fail ure toprovideclean,instrument
qual ity air through the Con tin u ous Purge can cause the MST2000 to give er ratic read ings. Failuresattributedtoa
contaminatedairsupplyarenotcoveredunderthewarranty.
Page 8
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OPERATION MANUAL
Integral “High Pressure” Blowdown System
2.1 Bal ancing the Purge if the Pro cess is in Op er a tion
A. Review the draw ing on page 5.
B. Pro cess must be in a steady state.
C. Dis con nect the HIGH and LOW lines from the trans mit ter. Mea sure the DP from the pro cess witha
pressure calibrator or other DP measuringdevice..
D. Record the DP reading. ______________________________
E. Reconnect the HIGH and LOW lines back to the transmitter. Make sure the Purge is operating.
F. Ad just the “HIGH” and “LOW” Purge Bal ance ad just ments on the mount ing plate un til the dis play
reading equals the read ing re corded in Step D. See the draw ing on page 5.
2.2 Bal ancing the Purge if the Pro cess is not in Op er a tion
A. Review the draw ing on page 5.
B. Ensure that there is no flow in the process. If the flow can not be stopped completely follow the in-
structionsinSection2.1.
C. At tach the HIGH and LOW lines to flow me ter.
D. Ad just the “HIGH” and “LOW” Purge Bal ance ad just ments on the front panel till the dis play reading
equals 0.0000 Inch W.C. See drawing on page 5.
þIMPORTANT: It is rec om mended that a Three Valve Man i fold not be used with an MST2400 which con-
tains the ContinuousPurgeOption.Consultfactory.
2.3 Integral 5 MicronCoalescentFilter
A. The MST2400 with continuous purge comes with an integral 5 micronCoalescentFilter.See the
Drawing on page 5.
B. The filter is intended as a secondary device. The supplyairshouldberegulatedandfiltered before
enteringtheenclosure.
C. The integral filter will turn “RED” as it cleans the air. Replace the filterbeforethe“RED” reaches the
right side, or outlet end.
3. Integral “High Pressure” Blowdown System
The MST2400 can be ordered with an Integral “High Pressure” Blowdown System. This op tion is de-
signedtocleanoutPitotAveragingFlowsensorsusingablastof“HighPressure”Air(upto 100 PSIG or
6.9 bar) while holding the last out put sig nal from the MST2400.
TheMST2400iscapableofbeingprogrammedtoperformablowdownsequenceanywherefromeve ry
2minutesuptoonceevery24hours(1440minutes). Theblowdownsequencecanalsobeactivated by
a re mote pulse from a DCS or other controller.
A. Specifications:
a. Air Sup ply: Max i mum of 100 PSIG (6.9 bar) . If air sup ply is over 100 PSIG then a reg u la tor must be
installed.
b. Voltage: 120 VAC. Optioncontainsintegral24VDCpowersupply.
c. Se quence Du ra tion: Approximately 30 sec onds from time sig nal is held till sig nal is re stored.
d. Temperature: Maximum150oF.
e. Programmable intervals: 2 min utes to 1440 min utes (24 hours).
f. PulseSignalfromexternalcontroller:Contactclosurefor½second(500milliseconds).
B. Sequence of Operation
a. The MST2400 be gins the Blowdown se quence by hold ing the last out put sig nal. “-HOLD-” will ap-
pear on the LCD. The Blowdown Status In di ca tor will also be lit. See the sec tion on the LCD Display.
b. Valves are ac ti vated to iso late and vent the trans mit ter from the pro cess to pre vent dam a ge.
c. The Hi & Low pro cess lines are al ter nately blown down for ap prox i mately 11 sec onds each.
d. ValvesareautomaticallyactivatedtorestoresignalfromprocessbacktoMST2400.
C. External Activation Signal
TheMST2400IntegralBlowdowncanbeactivatedbya½secondexternalcontactclosurepulsesig-
nal.TheBlowdowncanbecontrolledbythissignalonlyorincombinationwiththeintegralcontrolofthe
MST2400. TheMST2000mustbeprogrammedtoacceptthissignal. RefertoProgrammingParame-
ters, Sec tion 8. See Wiring Di a grams in Sec tion 14.
þNote: A 110VAC power source is re quired for the In te gral Blowdown Sys tem. An internal 24VDC
power sup ply is fur nished with the Blowdown. DO NOT USE THIS POWER SUPPLY TO POWER THE
LOOP SIGNAL.
Brandt Instruments, Inc.
MST2000 Multivariable SMARTFLOW® Transmitter
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ELECTRICAL CONNECTIONS
OPERATION MANUAL
4. ELECTRICAL CONNECTIONS
4.1 MST2100: NEMA 1 Enclosure
A. Review the MST2100 and MST2400 dimensional
drawings.
B. Refer to the MST2000 TerminalBlockDrawing.
C. MST2000InstrumentElectricalConnectionsare
cage clamp style for 12-24 AWG. Wire should be
stripped back a min i mum of 3/16" inches (5mm).
D. The MST2000 Multivariable differential pressure
transmitter is a HART® compatible loop-powered
4-20 milliamp transmitter.Powerconnectionis
made at the two left terminalpositions marked
LOOP+ and LOOP-. Nominalpowersupplyvoltage
is 24 volts DC which allows up to 600 ohms series
resistance in the loop circuit.
þForHART®applications,minimumloopresistanceis
250 ohms.
4.2 MST2400: NEMA 4X Enclosure
A. A ½" Liquid Titeconduitconnectionislocatedon
thebottomoftheEnclosure.
B. Conduitshouldbeinstalledtopreventcondensation
fromcollectingintheinstrument.
4.3 IntegralPowerSupplyOption.
A. The Integral Power SupplyOptionrequiresanexternal120VoltPowerSupply.
B. A six (6) positionscrewtypeterminalblockand½"Liquid Tite Conduit connection are suppliedwith
theIntegralPowerSupplyOption.
4.4 CanadianStandardsAssociationHazardousAreaApprovals
TheMST2100andMST2400havebeenapprovedbyCSAforhazardousareainstallations.
See Sec tion 15 for de tails or con tact the fac tory.
5. LCD DISPLAY and INTEGRAL KEY PAD
AllcontrolsandindicatorsareLocatedonthefrontpaneloftheMST2000. RefertotheLCD& Key Pad
Drawing.
5.1 Key Pad
All programming and control operations are per-
formed using four (4) pushbuttons on the key pad.
Following are summaries of each key.
MODE: ! Toggles the MST2000 between
RUN Mode and PROGRAM
Mode.
! Also used to change the edit cur-
sor when entering a numeric
value.
EDIT: ! Selectstheparametertoedit
when in Programming Mode.
! Also saves the edited parameter
data to memory.
INCREMENT: ! Increments (steps forward) through parameters and/or numeric values.
DECREMENT: ! Decrements(stepsbackwards)throughparametersand/ornumericvalues.
RESET: ! Resets the CPU. Re starts pro gram and loads in pro grammed vari ables stored in
the E-Prom
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MST2000 Multivariable SMARTFLOW® Transmitter
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OPERATION MANUAL
MST2000 OPERATIONAL MODES and START UP
5.2 LCD Display
The MST2000 High Contrast LCD display will
displaytwo(2)linessimultaneously.Thedisplay
is used to setup and calibratetheMST2000and
displayandmonitorinputandoutputsignalsand
other variables.
The lines of displayare:
Num eric: ! Where the val ues for DP or
Flow are displayed.
! Thevariablesforparameters
are edited and displayed.
Alphanum eric: ! Where units of measure and
parameter names are dis-
played.
S t a t u s ! Used to display the operationalstatus of the MST2000. The Statusindicator will
Indicators:
indicate when the MST2000 is in “RUN Mode”, if there is an Alarm and whether
an AutoZero or Blowdown sequenceisinprocess.
6. MST2000 OPERATIONAL MODES and START UP
The MST2000 has two basic operational Modes. They are:
RUN MODE ! In this mode the MST2000 is operating and displaying the measurements.
PROGRAM ! In this mode the MST2000 is ready for programming. Note: The PROGRAM Mode
MODE
can be password protected.
Startup
Whenpowerisfirstapplied,theMST2000LiquidCrystalDisplay(LCD)willfirstdisplayRESETfollowed
by READEE and then display the selected runtime parameter. The available runtime parameters are
listed below.
ENGLISH UNITS VERSION
METRIC UNITS VERSION
DP in Inches of Wa ter Col umn
DP inmillimetersofWaterColumn
Gas Flow in Nor mal Cu bic Me ters per Hour
Gas Flow in Cu bic Me ters per Hour
Mass Flow in Ki lo grams per Hour
ProcessTemperatureinDegreesCelsius
ProcessAbsolutePressureinBar
MST2000 Alarm Sta tus
INWC
SCFM
MMWC
NM3-HR
M3-HR
Gas Flow in Stan dard Cu bic Feet per Min ute
Gas Flow in Ac tual Cu bic Feet per Min ute
Mass Flow in Pounds per Hour
ACFM
LBHR
KG-HR
ProcessTemperatureinDegreesFahrenheit
Process Ab so lute Pres sure in PSI
MST2000 Alarm Sta tus
TEMP
TEMP
ABS_PR
ALARMS
ABS_PR
ALARMS
The default display mode is initially set at the factory for inches of wa ter col umn (INWC) or mil li-
metersofwatercolumn(MMWC). The user may select other runtime flow variablesbypressing
the INC (increment) or the DEC (decrement)keys.Note: English or Metric Unit Configura-
tions are not field selectable. They must be set at the factory.
The MODE key is used to togglebetween RUN mode and PROGRAM mode.
The EDIT key is used to clear ‘latched’ alarms in runtime (RUN) mode.
Brandt Instruments, Inc.
MST2000 Multivariable SMARTFLOW® Transmitter
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PROGRAMMING
OPERATION MANUAL
7. PROGRAMMING
The MST2000 PROGRAM mode is accessed by pressing the MODE key. When the MODE key is
pressed one of the followingwilloccur.
þNOTE:
& TheMST2000canbePasswordprotectedtopreventunauthorizedaccesstoprogrammingparameters.The
MST2000 is shipped from the fac tory with the Pass word dis abled.
7.1 If the PasswordParameterisEnabled(elsegotoSection7.2)
A. The MST2000 will then display ENT_PW prompting the user to enter the requiredpassword.
þNOTE:
& The user must press the EDIT key within 4 sec onds to be gin en ter ing the cur rent pass word or the MST2000 will re-
turn to RUN mode. The pass word is a unique num ber be tween 1 and 9999 and is en tered as de scribed in Sec tion
7.5.
& Dur ing pass word en try, if no keys are pressed for more than 4 sec onds, the MST2000 will re turn to RUN mode.
7.2 If the PasswordParameterisDisabledorafterthePasswordissuccessfullyentered.
After the passwordhasbeenproperlyentered, Brandt and verXXX willbemomentarilydisplayed
and then followedbythefirstavailablePROGRAMparameter.
þNOTE: verXXX indicates the installed software revisionlevel.
7.3 SelecttheParametertoEdit
A. Once the ParametersaredisplayedusetheINC and DEC keys to scroll up and down through the
available parameters.Seeparameters,Section8.0.
B. To edit a selected parameter, press the EDIT key and the editingmenuswillbecomeactive.
C. Parameters are eitheranumericvalue(example:EffectiveArea)orcontrolahardware/operating
mode.
7.4 Editing of a Hardware/Operating Mode Parameter.
A. Ifaparametercontrolsahardwareoroperatingmodefeature,usethe INC and DEC keys to scroll
throughtheavailablesettings.
B. Af ter the de sired set ting is se lected, press theEDIT key again to save the selected set ting to mem-
ory.
C. The LCD will display SAVED for approximately 1 sec ond and then redisplay the new set ting.
7.5 Editing a Numeric Value Parameter.
A. If the selected pa ram e ter to edit is a nu meric value,
the ed it ing menus will dis play the cur rent value and
thecurrentcursorpositionforthedecimalposition.
B. Use the INC and DEC keys to incrementordecre-
ment the numeric value at the current cursor posi-
tion.
C. To change the cursor position press the MODE
key. The LCD will display ‘x 1’ if the ones column is
to be changed, ‘x 10’ for the tens column, ‘x D1’ for
the tenths col umn, ‘x D01’ for the hun dredths col-
umn, etc. The number will not incrementordecre-
ment if the pa ram e ter limit is reached. See the
Chart Below and the examples to the right.
Page 12
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OPERATION MANUAL
PROGRAM PARAMETERS
LEFT OF
DECIMAL
RIGHT OF
DECIMAL
1000000. 100000. 10000. 1000. 100. 10.
1.
X
.1
X
.01
X
.001
.0001
X1
X D1
X D01
X10
X
X100
X1K
X
X D001
X D0001
X
X
X
X10K
X100K
X1M
X
X
X
D. Af ter the num ber is changed to the de sired value, press theEDIT key again to save the new value to
memory.
E. The LCD will display saved for approximately1secondandthenredisplaythenewsetting.
8. PROGRAM PARAMETERS
TheAvailablePROGRAMparametersareshownbelowalongwithadescriptionofhoweachparame-
ter is applied. They are listed in the order they ap pear in the PROGRAM menus.
Parameter
Description
FactoryDefault
LCDCON
LCD Con trastad just ment. Avail able range is from 0 to 10. Use lower
settingsforbestcontrastincolderenvironmentsandhighersettingsfor
bestcontrastinhotterenvironments.
5
420OUT
4-20 milliamp Out putassignment. Availableassignmentsare:
0 = INWC or MMWC
English Units Version: 0 = INWC (pri mary vari able), 1 = SCFM,
2 = ACFM, 3 = LBHR.
MetricUnitsVersion: 0 = MMWC (pri mary vari able), 1 = NM3-HR,
2 = M3-HR, 3 = KG-HR
420_ZE
420_SP
4 Milliamp Zero setting. The 4 milliamp zero setting adjusts the Set equal to the low
range of the natural
span.
milliamp lower range of the primary variable (INWC or MMWC). The
availablerangeisthenaturalspanofthedifferentialpressuresensor.
20 Milliamp Span setting. The 20 milliamp span setting adjusts the Set equal to the
upper range of the
natural span.
milliamp span value of the primary variable (INWC or MMWC). The
availablerangeisthenaturalspanofthedifferentialpressuresensor.
þNOTE: The 420_SP value (span) must al ways be greater than the 420_ZE
value (zero) for proper op er a tion.
F_SPAN
Flow Span setting. The flow span setting controls the upper 4-20 20000
milliamp value assignment (turn down) when the 4-20 output is as-
signed to the runtime cal cu lated flow vari ables (SCFM, ACFM, LBHR
or NM3-HR, M3-HR, KG-HR). The lower 4-20 milliamp value assign-
ment is al ways ref er enced to zero (0). The avail able range is:
English Unit Version: 0 to 10,000,000 (no units).
Metric Unit Version: 0 to 50,000,000 (no units).
Brandt Instruments, Inc.
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PROGRAM PARAMETERS
OPERATION MANUAL
Parameter
Description
FactoryDefault
E_AREA
Effective Area of flow meter device. The effective area is required for 1.0000 for English.
0.0929 for Metric.
flowcalculationsandisenteredtobethesameasshownontheThermo
Brandt flow me ter la bel. The avail able range is:
EnglishUnitVersion: 0.0000 to 500.0000 square feet.
Metric Unit Version: 0.0000 to 100.0000 square meters.
þNOTE: Some flow me ter de vices use ‘K fac tors’ in stead of ef fec tive ar eas to
definemassflowrelationships.Effectiveareascanbecalculatedfromgiven
K fac tors. See For mulas, Sec tion 10.
þNOTE: Thermo Brandt flow meter de vices are spec i fied in square feet. To
con vert to square me ters, mul ti ply the square feet value by 0.0929.
STDDEN
Standard Density. The standard density is required for mass flow 0.07517 for English.
1.20367 for Metric.
calculations and is entered for the specific gas being measured. The
standard density is entered at the standard reference temperature of 68
degrees F or 20 de grees C. The avail able range is:
EnglishUnitVersion: 0.0000 to 2.0000 pounds per cubicfoot.
Metric Unit Version: 0.0000 to 40.0000 Kilograms per cubicmeter.
TMPSRC
TMPCON
Temperature source.Available assignments are 0 = CONstant,
1 = EXTernal and 2 = RTD.
0 = CONstant
Temperature Constant. The temperature constant can be used for 68.0000 for English.
20.0000 for Metric
mass flow calculations when no external temperature inputs are
available and is entered as the average gas temperature. The available
range is:
EnglishUnitVersion: -50.0000 to 900.0000 degreesF.
Metric Unit Version:-50.0000 to 900.0000 degrees C.
RTDCAL
RTD Calibration offset. The RTD calibration offset constant allows the 0.0000
user to offset the actual measured value from the direct RTD input. The
value may be positive or negative and is entered in degrees F. The
available range is :
EnglishUnitVersion: -10.0000 to 10.0000 degrees F.
Metric Unit Version:-10.0000 to 10.0000 degrees C.
EX_TPZ
TPZCAL
External Temperature Zero. The External Temperature Zero is the 0.0000
lower range (4 milliamp zero) setting for the external 4-20 milliamp
‘temperature’ input channel. The available range is:
EnglishUnitVersion: -50.0000 to 100.0000 degreesF.
Metric Unit Version:-50.0000 to 100.0000 degrees C.
Temperature Zero Calibration. The Temperature Zero Calibration 4175
value is the 4 milliamp (zero) count value from the external 4-20 milliamp
‘temperature’ input channel. This parameter is used to calibrate the zero
point of the incoming 4-20 signal from the external 4-20 temperature
device. To calibrate the zero point of the incoming 4-20 signal, press the
EDIT key. The screen will display IN4MA. Set the incoming signal for 4
milliamps (or connect an external 4-20 calibrator set for 4 milliamps) and
press the EDIT key. The MST2000 will measure the external temperature
input channel and save the new 4 milliamp reference to memory.
If an external
temperature option
is pre-installed and
calibrated at the
factory this will be
custom set for that
unit.
Page 14
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OPERATION MANUAL
PROGRAM PARAMETERS
Parameter
Description
FactoryDefault
EX_TPS
External Temperature Span. The External Temperature Span is the 200.0000
upper range setting for the external 4-20 milliamp ‘temperature’ input
channel. The avail able range is:
English Unit Version: 0.000 to 990.0000 degrees F.
Metric Unit Version:0.000 to 990.0000 de grees C.
TPSCAL
Temperature Span Calibration. The Temperature Span Calibration 21000
Value is the 20 milliamp (span) count value from the external 4-20
milliamp ‘temperature’ input channel. This parameter is used to
calibrate the span point of the incoming 4-20 signal from the external
temperature device. To calibrate the span of the incoming 4-20 signal,
press the EDIT key. The screen will display IN20MA. Set the incoming
signal for 20 milliamps (or connect an external 4-20 calibrator set for 20
milliamps) and press the EDIT key. The MST2000 will measure the
external temperature input channel and save the new 20 milliamp
reference to memory.
If an external
temperatureoption
is pre-installed and
calibrated at the
factory this will be
custom set for that
unit.
APRSRC
APRCON
AbsolutePressureSource.Available assignments are 0 =CONstant 0 = CONstant
and 1 = EXTernal.
þNote: MST2000 DP sen sor max i mum op er at ing static pres sure is 25 PSID.
Absolute Pressure Constant. The absolute pressure constant can 14.6960 for English.
1.01325 for Metric.
be used for mass flow calculations when no external absolute pressure
input is available and is entered as the average absolute pressure
inside the duct. The avail able range is:
English Unit Version: 0.000 to 100.0000 PSIA.
Metric Unit Version:0.000 to 100.0000 Bar.
EX_APZ
APZCAL
External Absolute Pressure Zero. The External Absolute Pressure 0.000
Zero is the lower range (4 milliamp zero) setting for the external 4-20
milliamp ‘absolute pressure’ input channel. The avail able range is:
English Unit Version: 0.000 to 100.0000 PSIA.
þNote: MST2000 DP sensormaximum
operating staticpressureis25PSID.
Metric Unit Version:0.000 to 100.0000 Bar.
Absolute Pressure Zero Calibration The Absolute Pressure Zero 4175
Calibration value is the 4 milliamp (zero) count value from the external
4-20 milliamp ‘absolute pressure’ input channel. This parameter is
used to calibrate the zero point of the incoming 4-20 signal from the
external 4-20 absolute pressure device. To calibrate the zero point of
the incoming 4-20 signal, press the EDIT key. The screen will display
IN4MA. Set the incoming signal for 4 milliamps (or connect an external
4-20 calibrator set for 4 milliamps) and press the EDIT key. The
MST2000 will measure the external absolute pressure channel and
save the new 4 milliamp reference to memory.
If an external
absolute pressure
option is
pre-installed and
calibrated at the
factory this will be
custom set for that
unit.
EX_APS
External Absolute Pressure Span. The External Absolute Pressure 25.0000 for English.
1.7237 for Metric
Span is the upper range setting for the external 4-20 milliamp ‘absolute
pressure’ input channel. The available range is:
English Unit Version: 0.000 to 100.0000 PSIA.
þNote: MST2000 DP sensormaximum
Metric Unit Version:0.000 to 100.0000 Bar.
operating staticpressureis25PSID.
Brandt Instruments, Inc.
MST2000 Multivariable SMARTFLOW® Transmitter
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PROGRAM PARAMETERS
OPERATION MANUAL
Parameter
Description
FactoryDefault
APSCAL
Absolute Pressure Span Calibration. The Absolute Pressure Span 21000
Calibration value is the 20 milliamp (span) count value from the external
4-20 milliamp ‘absolute pressure’ input channel. This parameter is used
to calibrate the span point of the incoming 4-20 signal from the external
absolute pressure device. To calibrate the span point of the incoming
4-20 signal, press the EDIT key. The screen will display IN20MA. Set the
incoming signal for 20 milliamps (or connect an external 4-20 calibrator
set for 20 milliamps) and press the EDIT key. The MST2000 will measure
the external absolute pressure channel and save the new 20 milliamp
reference to memory.
If an external
absolute pressure
option is
pre-installed and
calibrated at the
factory this will be
custom set for that
unit.
INPUTO
INPUTG
OUTPTO
Input Offset. The Input Offset parameter allows the user to adjust This is a factory
default setting
(calibrate) the actual pressure (zero) value to the MST2000 displayed
value. The input offset parameter is displayed and stored in memory as
counts. After the EDIT key is pressed, the edit menu displays the real
time pressure input. The user then uses the INC and DEC keys to adjust
the desired offset. The pressure input must be connected to a pressure
source and be at minimum range value (zero reference) during this
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Input
adjustment. Use the MODE key to adjust the cursor position (i.e.. x D1, x Offset to the original
value. This setting
is also recorded on a
label located under
the cover of the
MST2000.
D10, x D100, etc.) to change the offset count by different increments. The
available range is –50,000 to 50,000 counts (approximately +/- 20%
adjustment of full scale). The factory default is as set by the factory during
initial system calibration.
Input Gain. The Input Gain parameter allows the user to adjust the gain This is a factory
default setting
of the actual pressure (full scale) value to the MST2000 displayed value.
The input gain parameter is displayed and stored in memory as a gain
multiplier. After the EDIT key is pressed, the edit menu displays the real
time pressure input. The user then uses the INC and DEC keys to adjust
the desired gain. The pressure input must be connected to a pressure
source and at maximum range value during this adjustment. Use the
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Input
MODE key to adjust the cursor position (i.e.., x D1, x D01, x D001 etc.) to Gain to the original
value. This setting
is also recorded on a
label located under
the cover of the
MST2000.
change the gain multiplier by different increments. The available range is
0.8000 to 1.2000 (approximately +/- 20 % adjustment of full scale). The
factory default is as set by the factory during initial system calibration.
Output Offset.The Output Offset parameter allows the user to adjust the This is a factory
default setting
actual 4 milliamp (zero) output value as referenced to the MST2000
displayed zero value. The output offset parameter is displayed and
stored in memory as counts. After the EDIT key is pressed, the edit menu
displaystheactualcountoffsetandthemicroprocessorsetstheoutputto
the 4.000 milliamp value. The user then presses the INC and DEC keys
to adjust the desired milliamp offset. Use the MODE key to adjust the
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Output
cursor position (i.e. x D1, x D10, x D100, etc.) to change the offset count Offset to the original
value. This setting is
also recorded on a
label located under
the cover of the
MST2000.
by different increments. The available range is –1,000 to 10,000 counts
(approximately 3.9 to 6.5 milliamp adjustment range). The factory default
is as set by the factory during initial system calibration.
Page 16
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OPERATION MANUAL
PROGRAM PARAMETERS
Parameter
Description
FactoryDefault
OUTPTG
Output Gain.The Output Gain parameter allows the user to adjust the This is a factory
default setting
actual 20 milliamp (span) output value as referenced to the MST2000
displayed full scale value. The output gain parameter is displayed and
stored in memory as a gain multiplier. After the EDIT key is pressed, the
edit menu displays the actual multiplier value and the microprocessor
sets the output to the 20.000 milliamp value. The user then uses the
INC and DEC keys to adjust the desired full scale milliamps. Use the
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Output
MODE key to adjust the cursor position (i.e., x D1, x D01, x D001 etc.) Gain to the original
value. This setting
is also recorded on a
label located under
the cover of the
MST2000.
to change the gain multiplier in different increments. The available
range is 0.8000 to 1.1000. (Approximately 16.5 to 20.5 milliamp
adjustment range). The factory default is as set by the factory during
initial system calibration.
þNOTE: The minimum and maximum output current range is 3.9 milliamps
and 20.5 milliamps (3.8 milliamps is reserved for fault ‘low’ current and
21.0 milliamps is reserved for fault ‘high’ current).
þNote: If HART® communicationsareenabled,theminimumcurrentislim-
ited to 4.0 milliamps.
AVGFAC
DEFDSP
Averaging Factor. The Averaging Factor controls the digital filtering 1= No Filtering
level (damping) of the displayed pressure value (and the 4-20 milliamp
output). The average factor parameter controls the size (depth) of the
digital FILO (first in – last out) filter algorithm. Available range is 1 to 10.
The average factor does not affect the inherent update rate of the LCD
or 4-20 milliamp output (approximately two times per second) except
during power up initialization when the FILO registers are first being
loaded.
Default Display. The Default Display parameter assignment selects 0 = INWC for
English.
0 = MMWC for
Metric.
the LCD display mode after power up and initialization. Available
assignments are:
EnglishUnitVersion:0 = INWC (pri mary vari able), 1 = SCFM, 2 = ACFM,
3=LBHRor4=SCAN.SelectingSCANwillcausethedisplaytosequence
throughthecalculatedvariablesat4secondintervals.
Metric Unit Version: 0 = MMWC (primary variable), 1 = NM3-HR, 2 =
M3-HR, 3=KG-HRor4=SCAN. SelectingSCANwillcausethedisplayto
sequence through the calculatedvariablesat4secondintervals.
DSPRES
aLARMS
Display Resolution. The Display Resolution parameter assignment 3 = X.XXX
controls the number of digits that are displayed to the right of the
decimal. The display resolution can be set as fol lows:
EnglishUnitVersion:From1to4Digitstotherightofthedecimal. Metric
Unit Ver sion: From 1 to 3 Digits to the right of the dec i mal.
The MST2000 has multiple alarm features. Alarms are available for 0 = Alarms Disabled
4-20 milliamp limit checks (under-range and over-range), RTD faults,
external 4-20 milliamp PCB communication failures and internal
hardware circuit faults. Alarms are enabled and disabled by setting the
individual binary bits in the ALARM WORD register to a ‘1’ or ‘0’
respectively. Since the individual binary bits cannot be displayed on the
LCD, the user must input the decimal word equivalent representing the
enabled and disabled bits. The individual alarm bit assignments and
the associated binary values are shown in Sec tion 9.
Brandt Instruments, Inc.
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PROGRAM PARAMETERS
OPERATION MANUAL
Parameter
Description
FactoryDefault
P_WORD
Password. The password is used to prevent unauthorized access to the 0 = Password
Disabled
programming parameters. The password may be any value between 0
and 9999. A password value of 0 disables the password feature.
BD_ENB
Blow Down Enable. The Blow Down Enable parameter allows the user 0 = Blowdown
Disabled.
to enable or disable the integrated blow down sys tem.
A value of ‘0’ disables the Blowdown Sequence.
A value of ‘1’ enablestheblowdownfunctionwithexternaltrigger
only. An external trigger must be appliedtothe‘IN1’terminalto
initiate the Blowdown sequence.
A value between 2 and 1440 en ables the MST2000 to con trol the
Blowdown sequence on timed intervals (in min utes). The time in-
terval be gins as soon as the MST2000 is put back in ‘RUN’
mode. For values be tween 2 and 1440 min utes, an ex ter nal trig-
ger may also be applied to commandadditionalblowdownse-
quences. The external trigger event does not re set the MST2000
blowdown internaltimer.
þNote: The min i mum ex ter nal trig ger pulse width is 500 mil li sec onds.
HT_ENB
HARTEnable. The HART® Enableparameterallowstheusertoenable 0 = Default if no
HART® option
installed.
ordisabletheHART® Communicationoption. Availableassignmentsare
0 = Dis abled and 1 = En abled.
1 = Enabled if
HART® option
installed.
þNote: IF the HART® option is enabled, 3.8 milliamp ‘fault current’ and 3.9
milliamp ‘un der range’ cur rent val ues are not al lowed on the 4-20mA out put
terminalsduringRUNMode.
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OPERATION MANUAL
ALARM PROGRAMMING INFORMATION
9. ALARM PROGRAMMING INFORMATION
9.1 Alarm ‘ENABLE’ Word Definition
The ALARM ‘ENABLE’ WORD (16 bit word) is divided into two 8 bit bytes. The lower order byte (bits 1 –
8) is used to enable and disable the alarm functions. The higher order byte (bits 9 – 16) is used to control
how the alarm is displayed and/or output to the user interface. Some bits are currently undefined and
reserved for future use.
BIT
16
BIT
15
BIT
14
BIT
13
BIT
12
BIT
11
BIT
10
BIT
9
BIT
8
BIT
7
BIT
6
BIT
5
BIT
4
BIT
3
BIT
2
BIT
1
32768
16384
8192
4096
2048
1024
512
256
128
64
32
16
8
4
2
1
9.2 Low Byte ‘BIT’ Definitions
A. Under-range: Enabling the un der-range alarm bit will cause the under-range alarm to become ac-
tive when the 4-20 milliamp output cur rent reaches 3.9 milliamps.
B. Over-range: Enabling the over-range alarm bit will cause the over-range alarm to become active
when the 4-20 milliamp output current reaches 20.5 milliamps.
C. RTD Fault: Enabling the RTD fault alarm bit will cause the RTD fault alarm to become active if an
open circuit or short circuit is sensed in the 4-wire RTD loop connection. See Section 9.3 G
D. ISO Comm error: Enabling the ISO Comm er ror alarm bit will cause the ISO Comm erroralarm(s)
to become active if any communication er rors or hard ware faults are de tected from any of theexter-
nal 4-20 milliamp input boards. (ISO = IsolatedOutputModule). SeeSection9.3G.
E. Hardware Fault: Enabling the Hardware Fault error alarm bit will cause the Hardware Fault error
alarm to become active if any internal hardware circuit faults (including microprocessor watchdog
timer faults) are detected from the MST2000 internal circuitry.
þNote: For each alarm fault bit above, in di vid ual alarm sta tus bit(s) are pro vided in the ALARM STATUS word to
iden tify which alarm is ac tive. Each alarm sta tus bit and the as so ci ated bi nary val ues are de scribed later in this
section.
9.3 High Byte ‘BIT’ Definitions
A. Fail-low: Enabling the Fail-low bit will cause the 4-20 milliamp output to change to the fault current
value of 3.8 milliamps if any alarm is active.
B. Fail-high: Enabling the Fail-high bit will cause the 4-20 milliamp output to change to the fault current
value of 21.0 milliamps if any alarm is active.
C. Last-val: Enabling the Last-val bit will cause the 4-20 milliamp output to hold at the last value if any
alarm is active.
þNote:
& The user must insure that only one of the 3 fault current control bits is set for proper operation.
& When entering PROGRAM mode, the 4-20 milliamp output current will change to the fault current as set by the fault
current control bits.
D. LCD Icon: Enabling the LCD Icon bit will cause the LCD ‘Alarm’ icon to be turned on if any alarm is
active.
Brandt Instruments, Inc.
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ALARM PROGRAMMING INFORMATION
OPERATION MANUAL
E. Latched Output: Enabling the Latched Output bit will cause any active alarm to become latched
and held active even if the alarm condition clears. Any ‘latched’ alarms can be cleared during RUN
mode by pressing the EDIT key (if the active alarm(s) are no longer active). After pressing the EDIT
key, any latched alarms that are no longer active will be cleared and any alarms that are still active
will remain latched.
F. Digital Out1: Enabling the Digital Out1 bit will cause the digital output channel (OUT1) to change to
the LOW state if any alarm is active.
þNote: The OUT1 (and OUT2) channels are ‘open collector’ style outputs. The user must externally
connect an active pull-up voltage to the output pins for proper operation. The maximum external pull-up
voltage that can be applied to the output pins is 24 volts DC.
G. External Constants: Enabling the Ex ter nal Con stants bit will cause the pro grammed con stants for
temperature or pressure to be used in the mass flow calculations if eithertheexternaltemperature
or pressureinputsareselectedandinfaultconditions.
9.4 Alarm ‘STATUS’ Word Definition
The ALARM STATUS word indicates which alarms are active during RUN mode. Since the
individual binary bits cannot be displayed on the LCD, the decimal word equivalent representing the
active alarm status bits is displayed. The individual alarm status bit assignments and the associated
binary values are shown below.
þNote: If alarms are ac tive, the alarm ICON on the LCD will be lit and the ALARM sta tus value will be dis-
played ev ery 10 sec onds. The user may also use the INC/DEC keys to ac cess the alarm sta tus value on
the LCD.
BIT
16
BIT
15
BIT
14
BIT
13
BIT
12
BIT
11
BIT
10
BIT
9
BIT
8
BIT
7
BIT
6
BIT
5
BIT
4
BIT
3
BIT
2
BIT
1
32768
16384
8192
4096
2048
1024
512
256
128
64
32
16
8
4
2
1
9.5 AlarmStatus‘BIT’Definitions
A. Under-range: Indicates Under-range alarm is active.
Binary value = 1.
B. Over-range: Indicates Over-range alarm is active.
Binary value = 2.
C. RTD Fault: Indicates RTD fault (open circuit or short circuit) alarm is active.
Binary value = 4.
D. ISO Comm1 error: Indicates communication or hardware fault error alarm from external 4-20 PCB
channel 1 is active.
Binary value = 8.
E. ISO Comm2 error: Indicates communication or hardware fault error alarm from external 4-20 PCB
channel 2 is active.
Binary value = 16.
F. ISO Comm3 error: Indicates communication or hardware fault error alarm from external 4-20 PCB
channel 3 is active.
Binary value = 32.
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OPERATION MANUAL
ALARM PROGRAMMING INFORMATION
G. Hardware Fault: Indicates hardware fault error from MST2000 internal circuitry is active.
Bi nary value = 64.
H. Watchdog Timer Fault: Indicates watchdog timer fault error from internal microprocessor is active.
Bi nary value = 128.
9.6 Alarm ‘ENABLE’ Word Decimal CalculationExamples
To calculate the decimal word equivalent for the ALARM ‘ENABLE’ WORD the user must determine
which alarms and alarm control bits are to be enabled and then sum the binary values of each enabled
bit. The decimal word equivalent is then programmed into the ALARM ‘ENABLE’ WORD using the
programming menus.
A. EXAMPLE 1
The user desires to enable the following alarm/alarm control enable bits:
LCD Icon, Fail-low, RTD Fault and Under-range.
a. LCD Icon bi nary value = 2048
b. Fail-low bi nary value = 256
c. RTD Fault bi nary value = 4
d. Un der-range bi nary value = 1
Decimalequivalent sum = 2309 (dec i mal value to pro gram into ALARM ‘EN ABLE’ WORD).
B. EXAMPLE 2
The user desires to enable the following alarm/alarm control enable bits:
Digital Out1, Latched Output, Fail-high, ISO Comm error, Over-range and Under-range.
a. Dig i tal Out1 bi nary value = 8192
b. Latched Out put bi nary value = 4096
c. Fail-high bi nary value = 512
d. ISO Comm er ror bi nary value = 8
e. Over-range bi nary value = 2
f. Un der-range bi nary value = 1
Decimalequivalent sum = 12811 (dec i mal value to pro gram into ALARM ‘EN ABLE’ WORD).
9.7 Alarm ‘STATUS’ Word Decimal Decode Examples
To determine which individual alarm status bits are active, the user must take the decimal equivalent
value from the ALARM ‘STATUS’ WORD register and decode it into the associated binary bit values.
This is accomplished using binary division of the decimal word. The examples below show manual
division. The user may also use a decimal to binary calculator to simplify this procedure.
A. Example 1
ALARM ‘STATUS’ WORD = 37
Using binary division, divide the decimal word by each bi nary bit value start ing with the most sig-
nificant bit value (bit 8 = 128) and then each successivelowerbit.
a.
b.
c.
d.
37 B 128 = 0 with a re main der of 37 . . . . . . . bit 8 (Watch dog timer fault) = 0
37 B 64 = 0 with a remainderof37 . . . . . . . . bit 7 (Hard ware fault) = 0
37 B 32 = 1 with a remainderof5 . . . . . . . . . bit 6 (ISO comm3 er ror) = 1
5 B 16 = 0 with a re main der of 5 . . . . . . . . . bit 5 (ISO comm2 er ror) = 0
e. 5 B 8 = 0 with a re main der of 5 . . . . . . . . . . . bit 4 (ISO comm1 er ror) = 0
f.
5 B 4 = 1 with a re main der of 1 . . . . . . . . . . . bit 3 (RTD fault) = 1
g. 1 B 2 = 0 with a remainder of 1 . . . . . . . . . . bit 2 (Over-range) = 0
h.
1 B 1 = 1 with a re main der of 0 . . . . . . . . . . . bit 1 (Un der-range) = 1
The decimal ALARM ‘STATUS’ WORD of 37 indicatesthefollowingactivealarms:
ISO Comm3 error, RTD fault and Under-range.
B. Example 2
Brandt Instruments, Inc.
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FORMULAS & CONVERSION FACTORS
ALARM ‘STATUS’ WORD = 206
OPERATION MANUAL
Using bi nary di vi sion, di vide the dec i mal word by each bi nary bit value start ing with the most sig-
nificant bit value (bit 8 = 128) and then each successive lower bit.
a.
206 B 128 = 1 with a remainderof78 . . . . . . bit 8 (Watchdog timer fault) = 1
b.
78 B 64 = 1 with a remainderof14. . . . . . . . bit 7 (Hard ware fault) = 1
c. 14 B 32 = 0 with a remainder of 14 . . . . . . . . bit 6 (ISO comm3 er ror) = 0
d.
14 B 16 = 0 with a remainder of 14 . . . . . . . . bit 5 (ISO comm2 er ror) = 0
e. 14 B 8 = 1 with a remainderof6 . . . . . . . . . . bit 4 (ISO comm1 er ror) = 1
f.
g.
h.
6 B 4 = 1 with a re main der of 2 . . . . . . . . . . . bit 3 (RTD fault) = 1
2 B 2 = 1 with a re main der of 0 . . . . . . . . . . . bit 2 (Over-range) = 1
0 B 1 = 0 with a re main der of 0 . . . . . . . . . . . bit 1 (Un der-range) = 0
The decimal ALARM ‘STATUS’ WORD of 206 indicatesthefollowingactivealarms:
Watchdog timer fault, Hardware fault, ISO Comm1 error, RTD fault and Over-range.
10. FORMULAS & CONVERSION FACTORS
The following formulas are used in the MST2000 software calculations:
Velocity =1096.845 ´ DP ¸ Density
ACFM = Ae ´ 667.657 ´ DP ´ T ¸ P
(
)
SCFM = Ae ´ 23972..677 ´ DP ´ P ¸ T
LB / HR = SCFM ´ Standard Density (@68o F) ´ 60
(
)
Ae or Effective Area (sq.ft) = Kfactor ´ Nominal Area (sq.ft). Thermo Brandt supplies the
Effective Area (Ae) specification with each of its flowmeters.
• Where:
6 Velocityis in Feet per Min ute
6 DP (Dif fer en tial Pres sure) is in Inches of Wa ter Col umn
6 T (Temperature)isindegreesRankine(degreesRankine=degreesFahrenheit+459.67)
6 P (Ab so lute pres sure) is in pounds per square inch (PSI)
6 Density is in pounds per cu bic foot (Lb/FT3)
6 Ae (Ef fec tive Area) is in Square Feet.
Metric Conversion Factors
Meters per second x 196.850 = Feet per minute
Bar x 14.5038 = PSIA
Square me ters x 10.7643 = Square feet
Millimeters of watercolumn B 25.4 = Inches of WaterColumn
Kilograms per hour x 2.205 = Pounds per hour
Kilograms per cubicmeterB 16.0136 = Pounds per cubic foot.
Cu bic meters per hour x 0.5885 = Cubic feet per minute
(De grees C + 273.15) x 1.8 = de grees Ran kine
Ae or Ef fec tive area (in square feet) = Kfactor x Nom i nal Area (square me ters) x 0.0929.
Thermo Brandt supplies the EffectiveArea(Ae) specificationwith each of its flowmeters. The
user must converttosquaremetersbeforeenteringtheeffectiveareparameterinthe‘E_AREA’
programming menu.
11.
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OPERATION MANUAL
TEST JACK
TEST JACK
ATestJackisstandardontheNonI.S. ApprovedMST2000’s.ItallowstheusertomonitorthemAout-
putoftheunitwithoutdisconnectingtheloop.Reviewdimensionaldrawingsonpage4. The Test Jack
is removed for all I.S. and Division 2 approved MST2000’s.
TomonitorthemAoutputoftheMST2000youwillneedaprecisionmilliammeter.Pushthepositivel ead
from the meter into the positive jack (RED) and the negative lead from the meter into the negativejack
(BLACK).
12. OPTIONAL MODULE INSTALLATION
The MST2000 Loop Powered Multivariable SMARTFLOW® Transmitter’s design is such that op-
tionalinput,digitalI/OandHART® communicationmodulescanbeinstalledinthefield. Thisallowsthe
usertheversatilitytochangeandadapttodifferentapplicationneeds.Thissectioncontains guidelines
forinstallingtheoptionalmodulesandupdatingtheMST2000’sprogrammingifnecessary.Please re-
view this section before attempting to make any upgrades. If there are any questions or problems
please call the factory for assistance.
þNOTE:
& Any upgrades should be made in a clean and dust free environment.
& Anti-static discharge precautions should be adhered to.
12.1 Isolated 4-20mA Input Modules(ISOModule)
A. Thermo Brandt Part Number FP37-OPTN-ISO
a. The Iso lated 4-20mA In put Mod ule (ISO) al lows the MST2000 to ac cept an iso lated 4-20mA sig nal
fromeitheranAbsolutePressureTransmitteror ExternalTemperatureTransmitter.The 2nd D.P.
Transmitter Op tion is un avail able at the time this man ual was printed.
b. All iso lated 4-20mA In put Mod ules are iden ti cal, but they must be mounted in the cor rect lo c ationon
the Main Board. See pho to graph and draw ings in this sec tion.
c. The Mod ule will be shipped in a sealed bag along with stand offs (2) and in struc tion sheet.
B. Installing the ISO Module Option.
a. Dis con nect all power from the MST2000.
b. De cide which slot the ISO Mod ule will fill. Re move the Op tion Cover La bel cov er ing that slot.
c. Take off the MST2000 Cover by re mov ing the 4 flat head screws. It is not nec es sary to re move the
Main Board from the hous ing.
d. Lo cate the slot, con nec tor and two mount ing holes for the ISO Mod ule on the Main Board.
e. Re move the ISO Mod ule and two (2) stand offs from the bag.
f. Snap the Stand offs into the two holes lo cated on the Main Board as shown in the draw ing. Note the
orientationofthestandoff.
g.
Brandt Instruments, Inc.
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OPTIONAL MODULE INSTALLATION
OPERATION MANUAL
Align the ISO Mod ule such that the re set but ton and LED are to ward the LCD and fac ing up. The
connector will be on the bot tom of the board. Snap the ISO Mod ule into the stand offs while mak ing
sure the con nec tor and header are prop erly aligned.
h. Re place the cover.
i. Hook up the MST2000 as per the terminalblockwiringdiagramonpage7.
j. Ap ply Power to the MST2000.
C. Programming the MST2000 to recognize the ISO Module(s)
a.
ReviewSection7onProgrammingandSection8onParameters.
b. De pending on which slot the ISOModulewasinstalled, selectoneofthefollowingparameterstoedit:
c.
TMPSRC: TemperatureSource.
d.
APRSRC: AbsolutePressureSource.
e.
Use the INC or DEC but tons to scroll to ‘1=EXT’ (1 = EXTernal)
f. Press the EDIT key to save this change to memory.
D. Calibrating the ISO Module
a. ExternalAbsolutePressureTransmitterISOModule.ReviewtheProgramParametersinsection8.
i. Connecta4-20mAsourcetotheAbsolutePressureTransmitterISOModuleinputterminals
(marked EXTIN 1). See ter mi nal block draw ing on page 7.
ii.
MakesureparameteraprSRC (Ab so lute Pres sure Zero Source) is set to 1 (1 = EXTernal).
Set the EX_APZ (AbsolutePressureZero)parameter.
Set the APZCAL (AbsolutePressureZeroCalibration)parameter:
iii.
iv.
.
.
! Press the Edit key. Dis play will change to read IN4mA.
! Ap ply 4.0 milliamps. Press the Edit Key to read and store the 4 milliamp cal i bra tion value.
v.
Set the EX_ABS(AbsolutePressureSpan)parameter.
Set the APSCAL(AbsolutePressureSpanCalibration)parameter.
vi.
.
.
! Press the Edit key. Dis play will change to read IN20mA.
! Ap ply 20.0 milliamps. Press the Edit Key to read and store the 20 milliamp cal i bra tion value.
þNOTE: For those MST2400 with the Integral Absolute Pressure Transmitter option installed , the ISO
Module has been calibrated at the factory.
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OPERATION MANUAL
OPTIONAL MODULE INSTALLATION
b. ExternalTemperature TransmitterISOModule.ReviewtheProgramParametersinsection 8.
i. Connecta4-20mAsourcetotheExternalTemperatureTransmitterISOModuleinputterminals
(marked EXTIN 2). See ter mi nal block draw ing on page 7.
ii.
Makesureparameter TMPSRC (Tem per a ture Source) is set to1 (1 = EXTernal).
Set the EX_TPZ (TemperatureZero)parameter.
Set the TPZCAL (TemperatureZeroCalibration)parameter.
iii.
iv.
.
.
! Press the Edit key. Dis play will change to read IN4mA.
! Ap ply 4.0 milliamps. Press the Edit Key to read and store the 4 milliamp cal i bra tion value.
v.
Set the EX_TPS(TemperatureSpan)parameter.
Set the TPSCAL (TemperatureSpanCalibration)parameter.
vi.
.
.
! Press the Edit key. Dis play will change to read IN20mA.
! Ap ply 20.0 milliamps. Press the Edit Key to read and store the 20 milliamp calibrationvalue.
12.2 Digital Input / Output Module Installation
A. Thermo Brandt Part Number FP37-OPTN-DIO
a. The Dig i tal I/O mod ule al lows the MST2000 to ac cept one (1) dig i tal in put and out put (1) digitalout-
puts.
b. The Dig i tal I/O mod ule must be in stalled on the right most con nec tor. See pho to graph and drawings
in this sec tion.
c. The Dig i tal I/O module will be shipped in a sealed bag along with stand offs (2) and in struc tion sheet.
B. Installing the Digital I/O Module Option.
a. Dis con nect all power from the MST2000.
b. Take off the MST2000 Cover by re mov ing the 4 flat head screws. It is not nec es sary to re move the
Main Board from the hous ing.
c. Lo cate the slot, con nec tor and two mount ing holes for the Dig i tal I/O module on the Main Board.
d. Re move the Dig i tal I/O module and two (2) stand offs from the bag.
e. Snap the standoffs into the two holes lo cated on the Main Board as shown in the draw ing. Note the
orientationofthestandoffs.
f. Align the Digital I/O mod ule such that con nec tor will be on the bot tom of the board. Snap the module
into the stand offs while mak ing sure the con nec tor and header are prop erly aligned.
g. Re place the cover.
h. Hook up the MST2000 as per the ter mi nal block wir ing di a gram on page 7.
i. Ap ply Power to the MST2000.
C. For Digital I/O wiring configurationssee section14.
12.3 HART® CommunicationsModule
A. Thermo Brandt Part Number FP37-OPTN-HART
a. The HART® CommunicationmoduleallowstheMST2000tocommunicatewithstandardHART® In-
terfaces.
b. The HART® Communicationmodulemustbeinstalledontheupperleftmost connector. Seephoto-
graph and drawingsinthissection.
c. The HART® Com mu ni ca tion mod ule will be shipped in a sealed bag along with stand offs (2) and in-
structionsheet.
B. Installing the HART® Communication Module Option.
a. Dis con nect all power from the MST2000.
b. Take off the MST2000 Cover by re mov ing the 4 flat head screws. It is not nec es sary to re move the
Main Board from the hous ing.
c. Lo cate the slot, con nec tor and two mount ing holes for the HART® mod ule on the Main Board.
d. Re move the HART® mod ule and two (2) stand offs from the bag.
e. Snap the Stand offs into the two holes lo cated on the Main Board as shown in the draw ing. Note the
orientationofthestandoff.
f.
Brandt Instruments, Inc.
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MST2000 HART® Communications Information
OPERATION MANUAL
Align the HART® mod ule such that con nec tor will be on the bot tom of the board. Snap the mod ule
into the stand offs while mak ing sure the con nec tor and header are prop erly aligned.
g. Re place the cover.
h. Hook up the MST2000 as per the terminalblockwiringdiagramonpage7.
i. Ap ply Power to the MST2000.
13. MST2000 HART® Communications Information
13.1 Power and Loop Conditions
The MST2000 Multivariable differential pressure transmitter is a HART® conforming loop-powered
4-20 milliamp transmitter. Power connection is made at the two left terminal positions marked LOOP+
and LOOP-. Nominal power supply voltage is 24 volts DC which allows up to 600 ohms series
resistance in the loop circuit. Higher loop resistance can be used with higher power supply voltages as
required. See the loop resistance-voltage graph below in determining the minimum loop voltage
required.
Note: For HART® communication applications, minimum loop resistance is 250 ohms.
13.2 HART® Connections
Maximum resistance
versus DC loop voltage
All electrical connections are per standard HART® connections. Refer to HART® Communication
Foundation Document HCF_SPEC-54 (HART® FSK Physical Layer Specification, Revision 8.0) for
additional information. The current sense resistor may be connected in either the high or low sideof the
field loop wiring. HART® communication devices must be connected in accordance with
HCF_SPEC-54forproperoperation. Typicalconnectionmethodsareshowninthefollowingdiagrams.
13.3 CablingRequirements
The field wiring of a HART® based system should use shielded twisted pair cable. When using cable
with multiple twisted pairs, it is important not to use the other pairs for signals that might interfere with
the HART® communication signals.
Typical multi-drop
connection with digital
communications.
Page 26
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OPERATION MANUAL
MST2000 HART® Communications Information
Typical Point to Point
Connection with
analog signaling.
Ifthecableislongerthanseveralmeters,it’sresistanceandcapacitancemaybecomesignificantinthe
HART®RCtime-constantlimitation®xC☯65microseconds).Whenusingasinglefielddeviceanda
hostwitha250ohmloadandnoothersignificantresistance,the65microsecondlimitationwouldallow
0.26 uFofcapacitanceforthesystem.Allowing0.01uF(10,000 pF) for the host and field de vice (each
having a CN=1), the to tal ca ble ca pac i tance could be up to 0.25uF. However, if the cable resistance
was110ohms,thesystemresistancebecomes360ohms,whichthenallowsforatotalpermittedcable
capacitanceof0.18uF.Thiscorrespondstoanominalcablelengthof900metersforacablewitharat-
ing of 200 pF/meter. If the cable needs to be extended upward towards the maximum HART® cable
length of 1500 meters, acablewithalowercapacitanceratingmustbeselected.
In a multi-dropped system, the additionalcapacitance from each networkedtransmittermust
also be considered. Each transmitter has an es tab lished CN value. A CN value of 1 in di cates
that the transmitterrepresents 5000 pF of load capacitance.
The MST2000 trans mit ter has a CN Value of 1 ( 5000pF).
The internalresistance of the MST2000 trans mit ter is in ex cess of 100,000 ohms and can be ig-
nored in the cable length calculations.
13.4 HART® Communication Distance
Up to 1.5 km (1 mile) when using multiple twisted pair cables. Communication distance varies
depending on type of cable used.
Use the following formula to determine cable length for specific applications:
65´ 106
C +10000
(
)
f
L =
-
R ´ C
C
(
)
Where:
L = Length in Meters or Feet
R = Resistance in Ohms (W ) including barrier resistance.
C = Cable capacitance in pF/m or pF/ft
Cf = Maximum shunt capacitance of receiving devices in pF/m or pF/ft.
13.5 Power Supply Requirements
To minimize signal degradation of the HART® communication signals, the following power supply
specifications are required.
Voltage: . . . . . . . . . . . . . . . . . . . . . . . 24 V DC (typical)
Max i mum rip ple (47 to 125 Hz): . . . . . . . . . . 0.2 V (peak to peak)
Max i mum noise (500 Hz to 10 kHz): . . . . . . . . 1.2 mV
Maximumseriesimpedance(500Hzto10kHz):. . 10 ohms
Brandt Instruments, Inc.
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MST2000 HART® Communications Information
OPERATION MANUAL
13.6 Intrinsic Safety Considerations
Intrinsic safety approvals for the MST2000 are pending. Contact the factory for additional information
involving hazardous applications with the use of safety barriers.
13.7 HART® Command Information
The MST2000 transmitter is compliant with HART® Command Revision 5.1. The following commands
are supported. Reference HART® Document HCF_LIT-20 (HART® Technical Overview) for additional
information.
COMMAND
HART® Command Set
Description
0
Universal
Universal
Read Unique Identifier
Read Primary Variable (pv)
Read (pv) current and percent of range
Read (pv) current and four predefined variables
Write Polling Address
1
2
Universal
3
Universal
6
Universal
11
12
13
14
15
16
17
18
19
35
50
51
59
Universal
Read Unique Identifier associated with Tag
Read Message
Universal
Universal
Read Tag, Descriptor, Date
Universal
Read sensor information
Universal
Read output information
Universal
Read final assembly number
Write message
Universal
Universal
Write tag, descriptor, date
Universal
Write final assembly number
Write (pv) range values
Common Practice
Common Practice
Common Practice
Common Practice
Read dynamic variable assignments
Write dynamic variable assignments
Write number of response preambles
pv = primary variable
13.8 Thermo Brandt Instruments HART® ManufacturerIdentification Code = 96 Hex, 150 Decimal
13.9 MST2000 HART® TransmitterVariableCodeAssignments.
VariableCode
ENGLISH UNIT VERSION
DP in Inches of W.C.
METRIC UNIT VERSION
D.P. InMillimetersofW.C.
0 or 1
2
3
4
5
6
Stan dard Cu bic Feet Per Min ute (SCFM)
Ac tual Cu bic Feet per Min ute (ACFM)
Mass in Pounds per Hour (LB/HR)
ExternalTemperatureinDegreeFahrenheit
ExternalAbsolutePressureinPSIA
Nor mal Cu bic Me ters Per Hour (NM3-HR)
Cu bic Me ters per Hour (M3-HR)
Mass in Ki lo grams per Hour (KG-HR)
ExternalTemperatureinDegreeCelsius
ExternalAbsolutePressureinBAR
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OPERATION MANUAL
Wiring Diagrams
14. Wiring Diagrams
FourWireConnectionwithAbsolutePressureTransmitter
Dual2WireConnectionwithAbsolutePressureTransmitter
The MST2000 with a Ab so lute Pres sure Trans mit ter can be wired to re-
placeyourexistingfourwiretransmitter
TheMST2000withAbsolutePressureTransmittercanbewiredtoreplace
your ex ist ing four wire trans mit ter. Re quires two 24Vdc power sources.
ThreeWireConnectionwithAbsolutePressureTransmitter.
Power Sup ply & Ab so lute Pres sure Trans mit ter
The MST2000 with Ab so lute Pres sure Trans mit ter can be wired to re place The MST2000 with Ab so lute Pres sure Trans mit ter can be sup plied with a
yourexistingthreewiretransmitter. powersupplytopowertheMST2000andAbsolutePressureTransmitter.
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Wiring Diagrams
OPERATION MANUAL
PowerSupplyandAbsolutePressureTransmitter
2 Wire RTD Connection
The MST2000 with Ab so lute Pres sure Trans mit ter can be sup plied with a
power sup ply to power the Ab so lute Pres sure only. The MST2000 will be
pow ered by a 24Vdc, 4-20mA loop.
3 Wire RTD Connection
4 Wire RTD Connection
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OPERATION MANUAL
MST2000HazardousAreaInstallation
Digital I/O Connections for Integral Blowdown System
15. MST2000 Hazardous Area Installation
The MST2000 Multivariable SMARTFLOWTM TransmitterisCanadianStandards As-
sociationapproved for the following hazardousareaclassifications.
15.1 IntrinsicallySafeInstallations
A. Model MST2100 (NEMA 1): In trin sically Safe for CL. I, Grps. C & D
B. Model MST2400 (NEMA 4X): In trin sically Safe for CL. I, Grps. C & D. CL. II, Grps.
E, F & G
ForIntrinsicallySafeapplications, unitmustbeinstalledperThermoBrandtinstallationdrawingnumber
SC37-4000-00. See Page 29.
In trin sically safe en tity pa ram e ters: Vmax = 40 VDC, Imax = 165mA, Ci = 0uf, Li = 240uH.
Maximumoperatingambienttemperature:66DegreesC(151DegreesF)
15.2 Division 2 And Other Installations:
A. Model MST2100 (NEMA 1): CL I, Div. 2, Grps. C & D
B. Model MST2400 (NEMA 4X): CL I, Div. 2 Grps. C & D. CL II, Div. 2 Grps. E, F & G. CL. III, Div. 2
ForDivision2applications, unitmustbeinstalledperCanadianand/orNationalElectrical Code re quire-
ments for Division2areas.Intrinsicsafetybarriersarenotrequired.
Di vi sion 2 power rat ings: Vmax = 40 VDC, Imax = 165mA.
Maximumoperatingambienttemperature:66degreesC(151DegreesF).
Brandt Instruments, Inc.
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MST2000 Hazardous Area Installation
OPERATION MANUAL
15.3 Approved Options.
See the chart below and re view the Model Num ber De scrip tion on Page 2.
MST2100
OPTION
MST2400
Intrinsically
Safe
Not
Certified
Intrinsically
Safe
Not
Division2
Division2
Certified
HART COMMUNICATIONS
4 Wire RTD
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
ISO4-20mATemperatureInputModule
ISO4-20mAPressureInputModule
DigitalI/OCard
X
X
X
High Pres sure Blow Down
Integral120VACPowerSupply
AbsolutePressureTransmitter
Heater
N/A
N/A
N/A
N/A
N/A
X
ContinuousPurge
X
X
Test Jacks
TerminalBlock4
X
15.4 MST2000 I.S. Installation Drawing SC37-4000-00
See Notes for Draw ing SC37-4000-00 on next page:
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OPERATION MANUAL
CalibrationoftheMST2000
15.5 Notes for MST2000 I.S. Installation DrawingSC37-4000-00
ForI.S.Installations,fieldwiringshallbeinstalledinaccordancewithCanadianElect ricalCodeand/orNational
ElectricalcodeANSI/NFPA70,Article504-30
1.
Wiring ca ble shall be 24 AWG or heavier, sep a rate shielded pairs.
2.
3.
4.
5.
The ground ing con nec tion be tween the safety bar rier and earth ground must be less than 1 ohm.
Con trol room equip ment must not gen er ate more than 250 Volts rms.
Safety Bar riers must be of ap proved types and used in an ap proved con fig u ra tion where the transmitterVmax
value is greater than the bar rier Voc rat ing and the trans mit ter Imax value is greater than the BarrierIscrating.
Thetransmitterinputcapacitance(Ci)plusthetotalcablecapacitanceforeachloopmust not ex ceed the bar rier
Carating.
6.
Thetransmitterinputinductance(Li)plusthetotalcableinductanceforeachloopmustnot ex ceed the bar rier La rat ing.
Trans mit ter en clo sure must be grounded to earth ground us ing the pro vided ground lug on the enclosure.
TheMST2000TransmitterisIntrinsicallySafefor:
7.
8.
9.
! Class I, Di vi sion 1, Groups C and D
! Class II, Di vi sion 1 Groups E, F and G.
Loopentityparameterspercircuitare:
10.
! Vmax = 40 VDC
! Imax = 165mA
! Ci = 0uF
! Li = 240uH
Use only CSA ap proved I.S. Pres sure trans mit ters where the Vmax and Imax of the trans mit ter is greater than the Voc and Isc of the bar rier.
TheCiandLiofthetransmittermustbeincludedinsystemtotalcapacitanceandinductance cal cu la tion and must be less than bar rier Ca
and La Rat ings.
11.
12.
Approvedmethodsforseparationofeachloopare:
! RunningLoopsinseparatecables
! RunningLoopsinseparateshields
WhenconnectingHARTcommunicatortheVmaxandImaxofthecommunicatormustbegreaterthan the Voc and Isc of the bar rier. Voc of
communicatorplusVocofbarriermustbelessthanVmaxoftransmitter, ISCofCommunicator plus Isc of Bar rier must be less than Imax of
Transmitter. LiofTransmitterplusLiofCommunicatormustbelessthanLaofBarrier, CioftransmitterplusCiofCommunicatormustbe
less than Ca of Bar rier.
13.
Use only listed and ap proved dust tight seal for Class II and Class III Haz ard ous Lo ca tions.
OtherwireterminalsnotavailableforuseonIntrinsicallySafeversion
14.
15.
16.
NorevisionsshallbemadewithoutnotificationofApprovalAgency(s).
16. Calibration of the MST2000
BasiccalibrationoftheMST2000Seriestransmittersisdoneintwoparts:1)settingthe4-20mAoutput
fromthedigitaltoanalogconverterand2)settingthe0&100%valuesofthedisplayedDP. Both parts
are done by the settingofparameters,enteredviatheintegralkeypad.
16.1 OUTPUT mA CALIBRATION
A. ZERO and SPAN of the mA outputaresetbytheOUTPTOandOUTPTGparameters, respectively.
You do not need to apply any DP signalforthemAcalibration, onlyanaccuratemAtestmeter is re-
quired.
B. Fol low ing the pro ce dures of Sec tion 7, en ter the PROGRAMMING Mode and se lect the OUTPTO
parameter. The existing value of OUTPUT OFFSET will be displayed.
C. Press the EDIT/SAVE key once to force the digitaltoanalogconvertertoits0%outputvalue and to
allow you to adjust the output to exactly 4.00mA as read on a mA test me ter. Use the INCREMENT
& DECREMENT keys as needed.
D. Press the EDIT/SAVE key to exit the edit mode and save the OUTPUT OFFSET value (even if there
was no adjustment made). Now step to the OUTPTG parametertodisplaytheexistingvalueof
OUTPUT GAIN.
E. Press the EDIT/SAVE key once to force the digitaltoanalogconverteroutputtoits100%value and
to al low you to ad just the out put to ex actly 20.00mA as read on a mA test me ter. Use the
INCREMENT & DECREMENT keys as needed.
F. Press the EDIT/SAVE key to exit the edit mode and save the OUTPUT GAIN value. This completes
theoutputmAcalibration.
G. Exit the PROGRAMMING Mode, by pressing the MODE key, or continuewiththeDPcalibration.
Brandt Instruments, Inc.
MST2000 Multivariable SMARTFLOW® Transmitter
Page 33
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CalibrationoftheMST2000
OPERATION MANUAL
16.2 DP CALIBRATION
þNOTE: For MST2000 Trans mit ters with CONTINUOUS PURGE OPTION. Do not use a hand pump, or com-
pres sion cyl in der type of pres sure source for the DP test sig nals. You must use a vented source to per-
mitcontinuousflowofpurgeair. Contactthefactoryforadditionalinformationoncalibrating
transmitterswithcontinuouspurge.
þNOTE: Do not turn off the purge air sup ply to use the trans mit ter as though it does not have the purge
op tion; this will cause er rors.
A. Connect an accurate test DP sig nal to the MST2000, equal to the 0% minimum range value.
B. While in the PROGRAMMING MODE, step to the INPUTO parameter to display the existing value
of INPUT OFFSET.
C. Press the EDIT/SAVE key once to dis play the DP read ing. Use the INCREMENT/DECREMENT
keys as needed to ad just the dis play to match the test DP sig nal value.
D. Press the EDIT/SAVE key to exit the edit mode and to save the INPUT OFFSET value, (even if it
was not changed).
E. Ad just the test DP sig nal to the 100% max i mum range value. Step to the INPUTG pa ram e ter to dis-
play the ex ist ing value of INPUT GAIN.
F. Press the EDIT/SAVE key once to dis play the DP read ing. Use the INCREMENT/DECREMENT
keys as needed to ad just the dis play to match the test DP sig nal value.
G. Press the EDIT/SAVE key to exit the edit mode and to save the INPUT GAIN value.
þNOTE: Changes to INPUTO or INPUTG will af fect both the dis play & the mA for any ap plied DP value.
Ad justing OUTPTO or OUTPTG will af fect only the mA value for any ap plied DP value.
Page 34
MST2000 Multivariable SMARTFLOW® Transmitter
Brandt Instruments, Inc.
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