CN3271-add2.pmd
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APPROVALS This instrument is U.L. and c.U.L. approved as controller.
CONTENTS
MOUNTING REQUIREMENTS ............................ 1
DIMENSIONS AND REAR TERMINALS ................ 2
PANEL CUT OUT ........................................... 3
WIRING GUIDELINES ...................................... 3
PRELIMINARY HARDWARE SETTINGS ............... 8
CONFIGURATION PROCEDURE ........................ 9
OPERATING MODE ...................................... 15
Normal display mode .............................. 15
Indicators ............................................. 16
Key functions in normal display mode ........ 16
Operative parameter display mode ............ 16
Key functions in
operative parameter display mode ............ 17
Operating parameters ............................ 17
Limiter function ..................................... 18
Alarm functions ..................................... 19
Serial link ............................................ 19
ERROR MESSAGES ..................................... 20
GENERAL SPECIFICATIONS .......................... 21
MAINTENANCE ............................................ 24
DEFAULT PARAMETERS .............................. A.1
APPENDIX B .............................................. B.1
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MOUNTING REQUIREMENTS
The instrument is shipped with a rubber panel
gasket (50 to 60 Sh). To insure the IP65 and
NEMA 4 protection, insert the panel gasket
between the instrument and the panel as shown
below.
Select a mounting location with the following
characteristics:
1) Minimal vibration.
2) An ambient temperature range between 0 and
50°C (32 and 122 °F).
Install the instrument as follows:
3) Easy access to the rear of the instrument.
4) No corrosive gases (sulfuric gas, ammonia,
etc.).
5) No water or other fluid (i.e. condensation).
6) Relative humidity of 20% to 80% non
condensing.
1) Insert the instrument in the gasket.
2) Insert the instrument in the panel cutout.
3) Pushing the instrument against the panel,
insert the mounting bracket.
4) Torque the mounting bracket screws between
0.3 and 0.4 Nm (2.66 and 3.54 lbf-in).
5) To insure NEMA 4X/IP65 protection, make
sure the instrument does not move within the
cutout .
The instrument can be mounted on a panel up to
15 mm (0.591 in) thick with a square cutout of
45 x 45 mm (1.772 x 1.772 in). For outline refer
to Dimensions and Panel Cutout.
Panel surface texture must be better than 6.3 µm.
Screw
bracket
Panel
Gasket
Fig. 1
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DIMENSIONS AND REAR TERMINAL BLOCKS
Without RS-485
With RS-485
Fig.2
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PANEL CUTOUT
WIRIN
G
GU
I
D
EL
IN
ES
A) Measuring Inputs
NOTE: Any external components (like Zener di-
odes, etc.) connected between sensor and input
terminals may cause errors in measurement due to
excessive and/or not balanced line resistance or
possible leakage currents.
TC Input
10
9
+
_
Shield
Shield
10
9
+
_
Fig.3
Fig. 4 THERMOCOUPLE INPUT WIRING
NOTE:
1) Do not run input wires with power cables.
2) For TC wiring use proper compensating cable,
preferably shielded (see Appendix B).
3) Shielded cable should be grounded at one end
only.
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RTD INPUT
RTD
L
I
N
EAR
IN
PUT
mA,
mV
or
RTD
10
9
+
_
V
Shield
+
10
9
8
9
10
8
9
10
mA
mV
or
_
V
Fig. 5 RTD INPUT WIRING
NOTE:
G
1) Don’t run input wires together with power
cables.
2) Pay attention to the line resistance; a high line
resistance may cause measurement errors.
3) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
Fig. 6 mA, mV AND V INPUTS WIRING
NOTE:
1) Don’t run input wires together with power
cables.
4) The resistance of the 3 wires must be the
same.
2) Pay attention to the line resistance; a high line
resistance may cause measurement errors.
3) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
4) The input impedance is equal to:
Less than 5 Ω for 20 mAdc input
Greater than 1 MΩ for 60 mVdc input
Greater than 400 KΩ for 5 Vdc and 10 Vdc
input
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B) Logic Input (for models with RS-485 only)
C.
1
)
R
e
l
a
y
Out
p
ut
s
This input is used for remote acknowledgement
(reset).
NO - OUT 1
C - OUT 1
OUT 1
1
2
3
Safety note:
-
-
-
-
Do not run logic input wiring with AC power
cables.
Use an external dry contact capable of
switching 0.5 mA, 5 Vdc.
The instrument needs 100 ms to recognize a
contact status variation.
The logic inputs are NOT isolated from the
measuring input.
Class 1
NC - OUT 1
C
OUT 2
Class 1
(Alarm)
6
7
NO
Logic input
14
Fig. 8
The OUT 1 contact rating is 3A/250V AC on
resistive load.
15
The OUT 2 contact rating is 2A/250V AC on
resistive load.
Fig.7
The number of operations is 1 x 105 at specified
rating.
NOTES 1) To avoid electric shock, connect power
line at the end of the wiring procedure.
2) For power connections use No 16 AWG
or larger wires rated for at last 75 °C.
3) Use cupper conductors only.
4) Don’t runinput wireswithpowercables.
All relay contacts are protected by varistor against
inductive load with inductive component up to 0.5 A.
The following recommendations avoid serious
problems which may occur, when relay outputs
are used with inductive loads.
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C.2) Inductive Loads
D)
Ser
i
a
l
In
t
er
f
ac
e
High voltage transients may occur switching
inductive loads.
Through the internal contacts these transients
may introduce disturbances which can affect the
performance of the instrument.
For units built with optional RS-485 communication
interface.
RS-485 interface allows to connect up to 30
devices with one remote master unit.
For all the outputs, the internal protection
(varistor) assures a correct protection up to 0.5 A
of inductive component.
I
A'/A
B'/B
A/A'
B/B'
N
S
T
R
U
M
E
N
T
11
12
13
M
A
S
T
E
R
The same problem may occurs when a switch is
used in series with the internal contacts as shown
in Fig. 9.
C
R
COMMON
POWER
LINE
LOAD
Fig. 10 - RS-485 WIRING
The cable length must not exceed 1.5 km at 9600
BAUD.
NOTES:
Fig. 9 EXTERNAL SWITCH IN SERIES WITH
THE INTERNAL CONTACT
1) This RS 485 serial interface is insulated.
2) The following report describes the signal sense
of the voltage appearing across the
interconnection cable as defined by EIA for
RS-485.
a) The ” A ” terminal of the generator shall be
negative with respect to the ” B ” terminal for
a binary 1 (MARK or OFF) state.
b) The ” A ” terminal of the generator shall be
positive with respect to the ” B ” terminal
In this case it is recommended to install an
additional RC network across the external contact
as show in Fig. 9
The value of capacitor (C) and resistor (R) are
shown in the following table.
LOAD
(mA)
C
R
P.
(W)
OPERATING
VOLTAGE
(µF) (Ω)
<40 mA 0.047 100
<150 mA 0.1 22
<0.5 0.33 47
1/2
2
2
260 V AC
260 V AC
260 V AC
for
a
binary 0 (SPACE or ON).
A
The cable involved in relay output wiring must be
as far away as possible from input or communica-
tion cables.
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E) Power Line and grounding
N, L2
I
A'/A
B'/B
A/A'
B/B'
N
S
T
R
U
M
E
N
T
11
12
13
4
M
A
S
T
E
R
POWER SUPPLY
100 to 240 Vac
24 Vac/Vdc
5
R (S,T), L1
Fig.12
N, L2
R (S,T), L1
COMMON
NOTES:
1) Before connecting the power line, check that
the voltage is correct (see Model Number).
2) For supply connections use 16 AWG or larger
wires rated for at least 75 °C.
I
11
12
13
N
S
T
R
U
M
E
N
T
3) Use copper conductors only.
4) Do not run input wires with power cables.
5) Polarity does not matter for 24 Vdc wiring.
6) The power supply input is NOT fuse protected.
Please provide it externally.
Power supply
24 V AC/DC
100/240 V AC
Type Current
Voltage
250 V
250 V
T
T
500 mA
125 mA
When fuse is damaged, it is advisable to verify
the power supply circuit, so that it is necessary to
send back the instrument to your supplier.
7) Safety requirements for permanently
connected equipment:
Fig.11
-
Include a switch or circuit-breaker in the
installation.
-
Place the switch in close proximity to the
equipment and within easy reach of the
operator.
-
Mark the switch as the disconnecting
device for the equipment.
NOTE: A single switch or circuit-breaker can
drive more than one instrument.
8) When the NEUTRAL line is present, connect it
to terminal 4.
9) To avoid shock and possible instrument
damage, connect power last.
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High - Low Limiter without RS-485
PRELIMINARY HARDWARE
SETTINGS
1) Remove the instrument from its case.
2) Set J106 according to the desired input type as
shown in the following figure.
2
4
6
8
7
J106
V101
1
3
5
INPUT
TYPE
J106
5-6
1-2
3-4
7-8
TC-RTD close open open open
60 mV close open open open
5 V
open close open open
open open close open
open open open close
10 V
20 mA
Fig.13.B
High - Low Limiter with RS-485
2
4
6
5
8
7
J106
1
3
V101
Fig.13.A
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The following is a complete list of parameters. The
lower display will show the parameter code (L1 to d1)
and the upper display will show the selection code or
numerical value. No timeout is applied in the
configuration mode.
CONFIGURATION PROCEDURE
CONFIGURATION KEY FUNCTIONS
RESET In ConfigurationMode,itisusedonlytoscroll
backparameterswithouttomemorizeanew
parameter value.
Usedin ConfigurationModetodecreasethe
parameter value.
Used in Configuration Mode to increase the
parameter value.
Used to memorize the new parameter
value and go to the next parameter.
Loads the default parameters.
L 1
=
Serial Interface Protocol
(Skipped if option is not available.)
OFF = No serial interface
nbUS = Modbus
FUNC
+
jbUS = Jbus
+ FUNC or + FUNC
L 2
=
Serial Link Device Address
Increases/decreases values at a higher rate
when modifying parameters.
+ RESET or + RESET
(Skipped if option is not available or L1 = OFF)
From 1 to 255
NOTE: EIA standard allows no more than 31 device
connected by one RS-485.
JumpstotheMaximumorMinimumparam-
eter value when modifying parameters.
L 3
=
Baud Rate for Serial Link
CONFIGURATION PROCEDURE
1) Remove the instrument from its case.
2) Open switch V101 (See illustrations under
“Preliminary Hardware Settings.”)
(Skipped if option is not available or L1 = OFF)
Set value from 600 to 19200 baud.
(19200 baud is shown on display as 1920)
3) Re-insert the instrument in its case.
4) Switch on power to the instrument.
The upper display will show COnF.
L 4
=
Byte Format for Serial Link
(Skipped if option is not available or L1 = OFF)
8E = 8 bits + even parity
8O = 8 bits + odd parity
NOTE : If "CAL" indication is displayed, press
immediately the V pushbutton and return to
the configuration procedure.
8
= 8 bits without parity
5) Press the “ ” key and the lower display will
show the firmware version.
Press the "FUNC" key to start the configuration
procedure with the first parameter (L1).
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r 1
0
1
2
3
4
5
6
7
8
9
=
I
n
p
u
t
T
y
p
e
a
n
d
R
a
n
g
e
V
a
l
u
e
r
2
=
D
e
c
i
m
a
l
P
o
i
n
t
P
o
s
i
t
i
o
n
= TC
= TC
= TC
= TC
= TC
= TC
= TC
= TC
= TC
= TC
J
From
From
From
From
From
From
From
From
From
From
From
From
From
-100 to 1000 °C
-100 to 1370 °C
-200 to
-100 to
-100 to 1400 °C
-50 to 1760 °C
-50 to 1760 °C
(Available only for linear range r1 = 15 to 22)
K
T
_ _ _ _ .
_ _ _ . _
_ _ . _ _
_ . _ _ _
= No decimal
400 °C
800 °C
= One decimal figure
= Two decimal figures
= Three decimal figures
E
N
S
R
B
L
U
G
D
C
0
to 1820 °C
r3
=
Initial value of the readout scale
-100 to
-200 to
900 °C
600 °C
(Available only for linear range r1 = 15 to 22)
Range: From -1999 to 9999
10 = TC
11 = TC
12 = TC
0
0
0
to 2300 °C
to 2300 °C
to 2300 °C
r4
=
final value of the readout scale
13 = TC Plat. II From
14 = RTD Pt 100 From
-100 to 1400 °C
(Available only for linear range r1 = 15 to 22)
Range: From -1999 to 9999
-200 to
to
12 to
850 °C
60 mV
60 mV
20 mA
20 mA
15 = Linear
16 = Linear
17 = Linear
18 = Linear
19 = Linear
20 = Linear
21 = Linear
22 = Linear
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
From
0
0
4
0
1
0
2
to
to
to
to
to
to
r5
=
Offset Adjustment
Range: From -500 to 500
Offset value algebraically added to the measured
value.
5
5
V
V
V
V
10
10
23 = TC
24 = TC
25 = TC
26 = TC
27 = TC
28 = TC
29 = TC
30 = TC
31 = TC
32 = TC
33 = TC
34 = TC
35 = TC
J
-150 to 1830 °F
-150 to 2500 °F
r6 =Time constant of the filter applied to
the displayed value
Range: From 0 (filter OFF) to 8 seconds.
(First order filter with selected time constant.)
K
T
E
N
S
R
B
L
U
G
D
C
-330 to
750 °F
-150 to 1470 °F
-150 to 2550 °F
-60 to 3200 °F
-60 to 3200 °F
32 to 3300 °F
-150 to 1650 °F
-330 to 1110 °F
r7
=
Alarm action on input fault.
When the instrument detects an input failure
condition, the alarm will operate as in presence of:
uP = as in presence of the full scale value.
doun = as in presence of the initial scale value.
0
0
0
to 4170 °F
to 4170 °F
to 4170 °F
36 = TC Plat. II From
37 = RTD Pt100 From
-150 to 2550 °F
-330 to 1560 °F
C1 = Type of limit action
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Hi. = High limit (for heating process)
Lo. = Low limit (for cooling process)
Hi.Lo = High and low limit (for special process)
generated the shutdown, no longer exists and the
acknowledge action has been performed.
The upper display flashes during a shutdown and
returns to a steady display when the shutdown
condition no longer exists.
C2 = Rearming Mode
O = Acknowledgementsrearm(reset)thelimiter(and
restart the process) only if the condition which
generated the shutdown status no longer exists
(points A and C of the Example 1). It do not
generate any effect if the condition which
generated the shutdown status still exists (point
B of the Example 1).
I = Acknowledgements enable the automatic
rearmament (reset) of the limiter if the
condition which generated the shutdown
status still exists (point B of the Example 2).
(The instrument rearms (reset) automatically
when the condition which generated the
shutdown status no longer exists).
When C2 = 0 and OUT 1 is OFF, the RESET LED is
ON.
When C2 = 1 one of the following condition may
occur:
- if no acknowledgement has been made, OUT 1 is
OFF and the RESET LED is flashing;
- if the acknowledgement has been made but the
condition which generated the shutdown status
still exists, OUT 1 is OFF and the RESET LED is
steady ON.
The shutdown condition can be stored in
permanent memory (see C4).
Acknowledgment can be performed by pressing
the RESET key, by momentarily closing the
external dry contact or by a command from the
serial link.
Notes about limiter function
The relay of the output 1 operates in fail-safe mode
(relay de-energized during shutdown condition) and
latching mode.
The length of the shutdown condition and max/min
measured values are stored in memory and
available for viewing until the next shutdown
condition occurs.
The OUT 1 turns OFF when:
-
-
-
C1 = Hi and the measured value is greater than
limiter threshold [“Su” parameter (see Operative
parameters”)]or
C1 = LO and the measured value is less than
limiter threshold [“Su” parameter (see Operative
parameters”)]or
C1 = HiLO and the measured value is greater
than “Su” parameter (see Operative parameters”)
or less than “S1” parameter (see Operative
parameters”).
These informations are lost at power down.
During a shutdown condition the max/min
measured values are continuously updated and
can be monitored.
Example 1 - C1 = Hi and C2 = O
The Out 1 remains OFF until the condition which
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C4
0
=
S
h
u
t
d
o
w
n
m
e
m
o
r
y
= The shutdown condition will be saved (at
next power up it will be reactivated)
= The shutdown condition will be lost in
case of power down
HS
(Limiter
Hysteresis)
Su
(Limiter
threshold)
1
ON
Relay OUT 1
OFF
C5 = Time Constant of the Filter applied
to the Measured Value for Limit
Action.
ON
“Reset” LED
OFF
Range: From 0 (filter OFF) to 8 seconds
Note: First order filter with selected time
Constant.
Flash
Upper display
FLASH
FLASH
Steady
A, B, C = Acknowledgment actions.
NOTE: Acknowledgment B has no effect.
P1
=
Alarm Function
Example 2 - C1 = Hi and C2 = 1
(Skipped when the option is not available)
nonE = Not provided
Su
(Limiter
threshold)
AL.P = Process alarm
AL.b = Band alarm
AL.d = Deviation alarm
When C1 = Hi.Lo, “AL.b” and “AL.d” are not
available.
HS
(Limiter
Hysteresis)
ON
Relay OUT 1
OFF
P2
=
Alarm configuration
ON
(Skipped if option is not available or P1 = none)
H.A. = High alarm with automatic reset
“Reset” LED
FLASH
FLASH
FLASH
FLASH
OFF
L.A.
=
Low alarm with automatic reset
Flash
Upper display
Steady
H.A.Ac = High alarm with automatic reset and
"Silence" function.
A, B = Acknowledgment actions.
L.A.Ac = Low alarm with automatic reset and
"Silence" function.
H.L.
L.L.
=
=
High alarm with manual reset
Low alarm with manual reset
C3
Auto = Automatic rearm
nAn Manual rearm
=
Rearm at Power-up
=
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NOTE:
Exam
p
le
for P2 = H.L.
1) For band alarm, H.A./H.A.Ac/H.L. signifies
outside band alarm, while L.A./ L.A.Ac/L.L.
signifies inside band alarm.
2) The "Silence" function allows the manual reset
of the alarm even if the alarm condition is still in
progress.
(Alarm
threshold)
(Alarm
Hysteresis)
Alarm status*
Relay
Non alarm status
Example for P2 = H.A.
ON
ALM LED
OFF
(Alarm
threshold)
FLASH
FLASH
(Alarm
Hysteresis)
Manual
reset
Manual
reset
Alarm status*
Relay
Non alarm status
ON
ALM LED
OFF
* Alarm Status: Relay energized (P3 = dir)
Relay de-energized (P3 =rEV)
FLASH
FLASH
Manual
reset
* Alarm Status: Relay energized (P3 = dir)
Relay de-energized (P3 =rEV)
P3
=
Alarm Action
(Skipped if option not is available or P1 = none)
dir
=
Direct action
(Relay energized in alarm condition)
Example for P2 = H.A.A.c
rEV = Reverse action
(Relay energized in non-alarm condition)
(Alarm
threshold)
(Alarm
Hysteresis)
Alarm status*
Relay
Non alarm status
ON
ALM LED
OFF
FLASH
FLASH
Manual
reset
* Alarm Status: Relay energized (P3 = dir)
Relay de-energized (P3 =rEV)
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P4
=
A
l
a
r
m
S
t
a
n
d
b
y
(m
a
s
k
)
F
u
n
c
t
i
o
n
d
1
=
D
i
g
i
t
a
l
I
n
p
u
t
(c
o
n
t
a
c
t
c
l
o
s
u
r
e
)
(Skipped if option is not available or P1= none)
(This is a read only parameter)
OFF =
On
Standby function disabled
Standby function enabled
Enb =
dlS
Digital input enabled
Digital input disabled
=
=
(The digital input is used as a remote
Acknowledgment .)
If the alarm is programmed as band or deviation,
this function masks the alarm condition at start up
and after a “Su” (limit threshold) changement until
the process variable reaches the alarm threshold,
plus or minus hysteresis. This standby function
masks a Process Alarm condition at start up until
the process variable reaches the alarm threshold
plus or minus hysteresis.
The configuration procedure is now completed.
The display will show "COnF".
PF =
Time Constant of the Filter
applied to the Measured Value for
Alarm Action
(Skipped if option is not available or P1 = none)
Range: From 0 (filter OFF) to 8 seconds
(First order filter with selected time constant.)
n 1 = Safety Lock
0
=
UNLOCKed. The device is always
UNLOCKed and all parameters can be
modified.
l
=
LOCKed. The device is always LOCKed
and no parameters can be modified
From 2 to 9999 = This number is a password, to be
used in run time (see “nn”), to LOCK/
UNLOCK the device.
t1
tn10 =
tn30 =
=
Timeout Selection
10 second timeout
30 second timeout
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OPERATING MODE
shows "Ph.". If no shutdown condition was
detected, the upper display will show “- - - -”.
This information is not available if C1 = HI.Lo.
The information is lost at power down and at
powerup the device will display the process
variable.
1) Remove the instrument from its case.
2) Set switch V101 (see fig. 13) to the closed
position.
3) Re-insert the instrument in its case.
4) Switch on the instrument.
Normal Display Mode
On powerup the device starts in the "Normal Display
Mode."
NOTE: When the shutdown condition was
generated by an input fault condition, the upper
display will indicate “m.Err”
By pressing the
thedisplayedinformation;therefore,oneofthefollowing
display modes can be selected:
or key, it is possible to change
6) The upper display shows the minimum mesured
value detected during the last shutdown
condition while the lower display shows "PL.” If
no shutdown condition was detected, the upper
display will show “- - - -”. This information is
not available if C1 = Hi. The information is lost
at power down and at powerup the device will
display the process variable.
1) The upper display shows the measured value
while the lower display shows the "Pu" (Process
variable).
If this display was active at power down, it will
be active at powerup.
2) The upper display shows the limiter threshold
while the lower display shows "Su." If this
display was active at power down, it will be
active at powerup.
NOTE: When the shutdown condition was
generated by an input fault condition, the upper
display will indicate “m.Err”
3) The upper display shows the second limiter
threshold while the lower display shows "S1."
This information is available only if C1 = Hi.Lo.
If this display was active at power down, it will
be active at powerup.
4) The upper display shows the total time (hh.mm)
of the last shutdown condition while the lower
displays shows “t.” If no shutdown condition
was detected, the upper display will show “- - -
-”. The information is lost at power down and
at powerup the device will display the process
variable.
If, at power off, the device was in shutdown
condition and shutdown memoy function is
selected (C4 = 0), and/or it was programmed for
manual reset at startup (C3 = 1), then at the next
power up the lower display will be flashing.
5) The upper display shows the maximum
measured value detected during the last
shutdown condition while the lower display
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Indicators
“RESET“ =Indicates control output 1 status as
follows:
“RESET” = Press and hold for 1 second to rearm
(reset) the limiter.
+ FUNC or + FUNC
a) When C2 parameter has been
configured equal to 0,
LED ON when Output 1 is OFF
LED OFF when Output 1 is ON
b) When C2 parameter has been
configured equal to 1,
Increases/decreases values at a higher
rate when modifying parameters.
+ RESET or + RESET
Jumps to the Maximum or Minimum
parameter value when modifying
parameters.
LED flashes when Output 1 is OFF
LED ON when Output 1 is OFF and
acknowledged
Operative Parameter Display Mode
The "FUNC" key initiates the Operative Parameter
Display Mode when pressed for less than 10
seconds in the "Normal Display Mode."
LED OFF when Output is ON
“ALM”= Indicates alarm status as follows:
- Flashes when alarm is ON
- ON when alarm has been resetted but
the alarm condition is still present.
- OFF when alarm is OFF
Thelowerdisplayshowstheparametercodewhilethe
upper display shows the parameter value or status.
The value of the selected parameter can be modified
with the and keys.
“REM”= Indicates the remote status of the
instrument.
- Flashes when instrument is in remote
mode.
Press the "FUNC" key again to store the new value
and advance to the next parameter.
- OFF when instrument is in local mode.
If no keys are pressed within the timeout period
(see t1), the instrument will automatically return to
the "Normal Display Mode" in the previous display
and any modification of the last displayed
parameter will be lost.
Key Functions in Normal Display Mode
“FUNC” = By pressing it, the display changes from
“Normal Display Mode” to “Operative
Parameter Display Mode.”
= Pressing it for more than ten seconds
initiates the Lamp Test. During the Lamp
Test the device function normally while all
display segments and LED's are lit with a
50% duty cycle. No timeout is applied to
a lamp test.
All parameters (except a6) can be modified only
when the device is UNLOCKed.
The LOCK/UNLOCK status can be selected in
configuration using “n1” parameter or during the
operating mode with the “nn” parameter (pass-
word).
Press the "FUNC" key again to end the
Lamp Test.
"
" or “ " = By pressing these keys it is possible to
change the displayed information. See
“Normal Display Mode” on previous
page.
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To switch from LOCKED to UNLOCKED, assign to
the “nn” parameter a value equal to the “n1”
parameter setting. To switch from UNLOCKED to
LOCKED, assign to the “nn” parameter any number
other than the n1 parameter setting.
nn
S
o
f
t
w
a
r
e
K
e
y
(Skipped if n1 = 0 or 1)
ON = the device is LOCKED.
OFF = the device is UNLOCKED.
When it is desired to switch from LOCK to
UNLOCK condition, set a value equal to
“n1” parameter.
When the device is in remote mode (the serial link
controls the device) no parameters can be modified.
When it is desired to switch from
UNLOCK to LOCK condition, set a value
different from “n1” parameter.
Key Functions in
Operative Parameter Display Mode
Su
S1
HS
AL
Limiter Threshold
Range: Span limits (From "S1" to full scale
value when C1 = Hi.Lo)
FUNC
=
Pressing the “FUNC” key, the
instrument stores the new setting
(if changed) and goes to the next
parameter.
Second Limiter Threshold
(Available when C1 = Hi.Lo)
Range: From initial scale value to "Su"
or
=
=
Changes the setting of the
selected parameter.
Limiter Hysteresis
Range: From 0.1% to 10.0% of the
input span or 1 LSD
RESET
Press and hold for more than 1
second for limiter rearmament.
Alarm Threshold (optional)
(Available only if the option is fitted and
P1= AL.P, AL.b or AL.d.)
OPERATING PARAMETERS
Some of the following parameters may not appear,
depending on the configuration.
Ranges:
span limits for process alarm (P1 = AL.P)
from 0 to 500 for band alarm (P1 = AL.b)
from -500 to 500 for deviation alarm
(P1 = AL.d)
Lower Description
Display
a
Manual reset of the alarm.
6
(Available only if P1 = AL.p, AL.b or AL.d)
ON = Starts the manual reset of the alarm
OFF = Do not start the alarm reset.
Select ON and press the FUNC key in order
to reset the alarm.
HA
Alarm Hysteresis (optional)
(Available only if the option is fitted and
P1 = AL.P, AL.b or AL.d)
Range: From 0.1% to 10.0% of the input
span or 1 LSD.
After a manual reset of the alarm the
instrument returns in Normal Display Mode.
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Limiter function
The length of the shutdown condition and max/min
measured values are stored in memory and available
for viewing (see “Normal Display Mode”) until the next
shutdown condition occurs.
The relay of the output 1 operates in fail-safe mode
(relay de-energized during shutdown condition) and
latching mode.
These informations are lost at power down.
The OUT 1 turns OFF when:
-
-
-
The instrument is configured as a high limiter
(C1 = Hi) and the measured value is greater than
limiter threshold [“Su” parameter (see Operative
parameters”)]or
The instrument is configured as a low limiter (C1
= LO) and the measured value is less than
limiter threshold [“Su” parameter (see Operative
parameters”)]or
The instrument is configured as a high/low
limiter (C1 = HiLO) and the measured value is
greater than “Su” parameter (see Operative
parameters”) or less than “S1” parameter (see
Operative parameters”).
During a shutdown condition the max/min measured
valuesarecontinuouslyupdatedandcanbemonitored.
Example 1 - C1 = Hi and C2 = O
The Out 1 remains OFF until the condition which
generated the shutdown, no longer exists and the
acknowledge action has been performed.
The upper display flashes during a shutdown and
returns to a steady display when the shutdown
condition no longer exists.
Example 2 - C1 = Hi and C2 = 1
When the OUT 1 is OFF the RESET LED is ON [if the
selectedrearmingmodeisequalto0(C2=0)]orflashes
[if the selected rearming mode is equal to 1 (C2 = 1)].
When the selected rearming mode is equal to 1
(C2 = 1) the RESET LED is steady ON when OUT 1
is OFF and acknowledged.
The shutdown condition can be stored in permanent
memory(seeC4).
Acknowledgment can be performed by pressing the
RESET key, by momentarily closing the external dry
contact or by a command from the serial link.
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Alarm functions
S
e
r
i
a
l
L
I
n
k
(o
p
t
i
o
n
a
l
)
(Skipped if option is not available or P1 = none)
The alarm can be programmed as:
- process alarm
The device can be connected to a host computer via
serial link.
- band alarm
- deviation alarm.
ThehostcanputthedeviceinLOCAL(parametersare
controlled via keyboard) or in REMOTE (functions and
parameters are controlled via serial link).
REMOTE is shown by the decimal point to the left
of "REM" which is on the right side of the numerical
display.
Band and deviation alarms are referred to the
limiter threshold and are possible only if an high
limiter or a low limiter function has been selected.
For all the alarm types, it is possible to select
automatic or manual reset or the “Silence”
function.
The "Silence" function is a typical function of the
alarm annunciators (see ISA “Alarm annunciator
operational sequence”) and it is usually applied to
audible alarm indications (horn). This function
allows the manual reset of the alarm even if the
alarm condition is still in progress.
Via serial link it is possible to read and/or to modify all
the operative and configuration parameters.
The following conditions must apply to implement this
function:
1) Configure parameters L1 through L4 with the
front keyboard.
2) The device must be in the Operating mode.
It is also possible to assign to the alarm a stand by
(mask) function.
For other details require ENG 816-E document.
If the alarm is programmed as band or deviation
alarm, this function masks the alarm condition after
a safety threshold change or at the instrument
start-up until process variable reaches the alarm
threshold plus or minus hysteresis. If the alarm is
programmed as a process alarm, this function
masks the alarm condition at instrument start-up
until process variable reaches the alarm threshold
plus or minus hysteresis.
Graphic example of the alarm behaviour are shown
at pages 12 and 13.
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ERROR MESSAGES
E
r
r
o
r
M
e
s
s
a
g
e
s
On power up, the instrument performs a self-
diagnostic test. When an error is detected, the
lower display shows an "Er" indication while the
upper display shows the code of the detected
error.
Overrange, Underrange and
Sensor Break Indications
This device detects input fault conditions.
(OVERRANGE,UNDERRANGEORSENSOR
BREAK). When the process variable exceeds the
span limits an OVERRANGE condition will appear
as:
Error List
100
150
200
XXX
301
307
400
500
502
510
Error in EEPROM writing
Short circuit on CPU's outputs
Error on "protect register" in EEPROM
Configuration parameter error.
Error on calibration of selected input.
rj input calibration error.
Error on operative parameters.
Error on autozero measurement.
Error on reference junction measurement.
Error during calibration procedure.
An UNDERRANGE condition will appear as:
A sensor break is signalled as "OPEn”. On the mA/
V input, a sensor break can be detected only
when the range selected has a zero elevation (4/
20 mA, 12/60 mV, 1/5 V or 2/10 V.)
Dealing with Error Messages
1) When a configuration parameter error is
detected, repeat the configuration procedure of
that specific parameter.
2) If an error 400 is detected, press and hold the
key and press the key and load the default
parameters; then repeat the control parameter
setup.
On the RTD input "shrt" is signalled when input
resistance is less than 15 Ω (short circuit sensor
detection).
3) For all other errors, contact your
Service Representative.
This device detects reference junction errors or
errors on the internal autozero measurement.
When a fault is detected the output goes OFF and
the alarm assumes an upscale/downscale reading
in accordance with r7.
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GENERAL SPECIFICATIONS
D/
A
c
o
nv
ersi : dual slope integration.
o
n
Case: Polycarbonate grey case
Sampling time :
Self extinguishing degree: V-0 according to UL94.
Front protection - designed and tested for IP 65 (*)
and NEMA 4X (*) for indoor locations (when panel
gasket is installed).
(*) Test were performed in accordance with IEC
529, CEI 70-1 and NEMA 250-1991 STD.
Installation: panel mounting.
Rear terminal board: 15 screw terminals (screw
M3, for cables from φ 0.25 to φ 2.5 mm2 or from
AWG 22 to AWG 14 ), connection diagram and
safety rear cover.
Dimensions: 48 x 48 mm (according to DIN
43700); depth
- for linear inputs = 250 ms.
- for TC or RTD inputs = 500 ms.
Display updating time: 500 ms.
Resolution: 30000 counts.
Temperature Drift (CJ excluded)
-
Less than 200 ppm/°C of full span for mV and
TC ranges 0, 1, 3, 4, 8, 13, 23, 24, 26, 27, 31,
36 (CJ excluded).
-
-
-
-
Less than 300 ppm/°C of full span for mA, V and
TC ranges 10, 11, 12, 33, 34, 35 (CJ excluded)
Less than 400 ppm/°C of full span for RTD and
TC range 9, 32 (CJ excluded).
Less than 500 ppm/°C of full span for TC ranges
2, 5, 6, 25, 28, 29 (CJ excluded).
- 122 mm for models with RS-485.
- 105 mm for models without RS-485
Weight: 250 g. max. (8.75 oz.).
Less than 600 ppm/°C of full span for TC ranges
7, 30.
NOTE: Precision and drift guaranteed (for
T>300°C/570°F).
Accuracy: + 0.2% f.s.v. @ 25 °C (77 °F) and
nominal power supply voltage.
Operative temperature: from 0 to +50 °C (32 to
122 °F).
Storage temperature: from -20 to +70 °C (-4 to
158 °F).
Power supply : (switching mode) from 100 to
240 V AC. 50/60 Hz (+10 % to -15 % of the
nominal value) or
24 V DC/AC (+10 % of the nominal value).
Power consumption: 8 VA.
Insulation resistance: > 100 MΩ according to
IEC 1010-1.
Isolation voltage: 1500 V r.m.s. according to
IEC 1010-1.
Humidity: from 20% to 85 % RH not condensing.
Common mode rejection ratio:
120 dB @ 50/60 Hz.
Normal mode rejection ratio: 60 dB @ 50/60 Hz.
Electromagnetic compatibility and safety
requirements: This instrument is marked CE.
Therefore, it is conforming to council directives
89/336/EEC (reference harmonized standard
EN 50081-2 and EN 50082-2) and to council
directives 73/23/EEC and 93/68/EEC (reference
harmonized standard EN 61010-1).
Installation category: II
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INPUTS
B
)
R
T
D
(Resistance
Temperature
Detector)
Input: for RTD Pt 100 Ω, 3 wire connection.
Input circuit: current injection.
A) THERMOCOUPLE
°C/°F selection: via front pushbuttons or serial link.
Line resistance: automatic compensation up to 20
Ω/wire with no measurable error.
Type : J, K, T, E, N, S, R, B, L, U, G(W), D(W3),
C(W5), Platinel II, °C/°F selectable.
External resistance: 100 Ω max, maximum error
0,1% of span.
Calibration: according to DIN 43760
Burn out : The instrument detect the open condition
of one or more wires. It is able to detect also the
short circuit of the sensor.
Burn out: It is shown as an overrange condition
(standard). It is possible to obtain an underrange
indication by cut and short.
Cold junction: automatic compensation from 0 to
50 °C.
STANDARD RANGES TABLE
Cold junction accuracy : 0.1 °C/°C
Input impedance: > 1 MΩ
Calibration : according to IEC 584-1 and DIN
43710 - 1977.
Input
Ranges
type
STANDARD RANGES TABLE
RTD Pt 100 Ω
14
37
- 200 / 850
- 330 / 1560
°C
°F
DIN 43760
T/C
Ranges
type
J
0
1
2
3
4
5
6
7
8
9
-100 / 1000 °C 23 -150 / 1830 °F
-100 / 1370 °C 24 -150 / 2500 °F
-200 / 400 °C 25 -330 / 750 °F
-100 / 800 °C 26 -150 / 1470 °F
-100 / 1400 °C 27 -150 / 2550 °F
-50 / 1760 °C 28 -60 / 3200 °F
-50 / 1760 °C 29 -60 / 3200 °F
K
T
E
N
S
R
B
L
C) LINEAR INPUTS
Read-out: keyboard programmable between
-1999 and +9999.
Decimal point: programmable in any position
Burn out: the instrument shows the burn out
condition as an underrange condition for 4-20
mA, 1-5 V and 2-10 V input types.
0 / 1820 °C 30
32 / 3300 °F
-100 / 900 °C 31 -150 / 1650 °F
-200 / 600 °C 32 -330 / 1110 °F
U
It shows the burn out condition as an underrange
or an overrange condition (selectable by
soldering jumper) for 0-60 mV and 12-60 mV
input types. No indication are available for 0-20
mA, 0-5 V and 0-10 V input types.
G(W) 10
D(W3) 11
C(W5) 12
0 / 2300 °C 33
0 / 2300 °C 34
0 / 2300 °C 35
0 / 4170 °F
0 / 4170 °F
0 / 4170 °F
P.(*) 13 -100 / 1400 °C 36 -150 / 2550 °F
(*) P. equal to Platinel II
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STANDARD RANGES TABLE
Input type impedance
0 - 60 mV
O
U
T
P
U
T
S
Accuracy
Output updating time :
- 250 ms when a linear input is selected
- 500 ms when a TC or RTD input is selected.
15
16
17
18
19
20
21
22
> 1 MΩ
< 5 Ω
12 - 60 mV
0 - 20 mA
4 - 20 mA
0 - 5 V
1 - 5 V
0 - 10 V
2 - 10 V
OUTPUT 1
Type: relay SPDT contact .
Contact rated: 3 A at 250 V AC on resistive load.
Function: Safety limiter output.
Action: reverse (fail-safe).
0.2 % + 1 digit
@ 25°C
> 400 kΩ
> 400 kΩ
(77 °F)
OUTPUT 2
Type: relay SPST contact .
Contact rated: 2 A at 250 V AC on resistive load.
Function: Alarm output
D) LOGIC INPUTS
Action: direct/reverse programmable by front
keyboard.
(for models with RS-485 only)
This instrument is provided of 1 logic input used
for remote acknowledgement.
NOTES
1) Use an external dry contact capable of
switching 0.5 mA, 5 V DC.
ALARM
2) The instrument needs 100 ms to recognize a
contact status variation.
3) The logic inputs are NOT isolated by the
measuring input.
Action: Direct or reverse acting.
Alarm functions: configurable as process alarm,
band alarm or deviation alarm.
Alarm reset: automatic reset, manual reset or
"Silence" function is programmable.
Stand by (mask) alarm: the alarm can be
configured with or without stand by (mask)
function.
Process alarm:
Operative mode : High or low programmable.
Threshold : programmable in engineering unit within
the readout span.
Hysteresis: programmable from 0.1 % to 10.0 % of
the readout span.
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Band alarm
M
A
IN
TEN
A
N
C
E
Operative mode: Inside or outside band
programmable.
Threshold: programmable from 0 to 500 units.
Hysteresis : programmable from 0.1 % to 10.0 % of
the readout span.
1) REMOVE POWER FROM THE POWER
SUPPLY TERMINALS AND FROM RELAY
OUTPUT TERMINALS
2) Remove the instrument from case.
3) Using a vacuum cleaner or a compressed air
jet (max. 3 kg/cm2) remove all deposit of dust
and dirt which may be present on the louvers
and on the internal circuits trying to be careful
for not damage the electronic components.
4) To clean external plastic or rubber parts use
only a cloth moistened with:
Deviation alarm
Operative mode : High or low programmable.
Threshold : programmable from - 500 to +500
units.
Hysteresis : programmable from 0.1 % to 10.0 % of
the readout span.
- Ethyl Alcohol (pure or denatured) [C2H5OH] or
- Isopropil Alcohol (pure or denatured)
[(CH3)2CHOH] or
- Water (H2O)
SERIAL COMMUNICATION INTERFACE
(OPTION)
Type: insulated RS-485.
Protocol type: MODBUS or JBUS.
Baud rate: programmable from 600 to 19200
BAUD.
5) Verify that there are no loose terminals.
6) Before re-inserting the instrument in its case,
be sure that it is perfectly dry.
7) re-insert the instrument and turn it ON.
Byte format: 8 bit.
Parity: even, odd or none programmable.
Stop bit: one.
Address: from 1 to 255.
Output voltage levels: according to EIA
standard.
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procedure is complete and the instrument reverts
to the “Normal Display Mode.” The following is a
list of the default operating parameters loaded
during the procedure:
APPENDIX A
DEFAULT PARAMETERS
DEFAULT PARAMETERS
Default Operating Parameters List
Loading Default Operating Parameters
The control parameters can be loaded with
predetermined default values. These are the
settings loaded into the instrument prior to
shipment from the factory. To load the default
values proceed as follows:
Parameter
Default Value
Alarm Acknowledge OFF
Software Key
Unlock
Setpoint Threshold
Low range value (if low limit)
High range value (if high or
high/low limit)
Setpoint1 Threshold Low range value
Setpoint Threshold
a) Press and hold the key and press the
key; the displays will show:
Hysteresis
0.1%
Alarm Threshold
Low range (if process alarm)
100 (if deviation or band
alarm)
Alarm Hysteresis
0.1%
b) Press either the or
show:
key; the display will
c) Press the "FUNC" key; the display will show:
This indicates that the loading procedure has
been initiated. After about 3 seconds the loading
Appendix A.1
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Loading Default Configuration Parameters
The configuration parameters can be loaded with
predetermined default values. These are the
settings loaded into the instrument prior to
shipment from the factory. To load the default
values proceed as follows:
f) Press the FUNC key; the display will show:
a) Internal switch V101 must be open.
b) The upper display will show:
This indicates that the loading procedure has
been initiated. After about 3 seconds the
procedure is complete and the instrument reverts
to the “COnF” display. The following is a list of the
default configuration parameters loaded during
the procedure:
c) Press the
the firmware version.
key; the lower display will show
d) Still holding the key, press the key; the
display will show:
e) Press the
key to select Table 1 (Euro-
pean) or Table 2 (American) default
parameters; the display will show:
Appendix A.2
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PARA.
Table 1
Table 2
European
American
L1
L2
L3
L4
r1
nbUS
nbUS
1
1
19200
19200
8E
8E
Type J
Type J
(-100 to 1000 °C)
(-150 to 1830 °F)
r2
----.
----.
r3
-100
1000
0
-150
1830
0
r4
r5
r6
1 second
uP
1 second
uP
r7
c1
c2
c3
c4
c5
P1
P2
P3
P4
PF
n1
t1
Hi
Hi
1
0
Auto
0
Auto
0
1 second
nonE
H.A.
rEV
1 second
nonE
H.A.Ac
rEV
OFF
1 second
0
OFF
1 second
0
10 seconds
30 seconds
Appendix A.3
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APPENDIX B
THERMOCOUPLE COMPENSATING CABLE COLOR CODES.
Thermocouple
Material
T Copper Constantan
British
BS 1843
White
Blue
Blue
Yellow
Blue
Black
Brown
Blue
Red
White
Blue
Green
White
Blue
Green
Brown
Blue
American
ANSI MC 96.1 DIN 43710
German
French
NFE 18-001
Yellow
Blue
Blue
+
-
+
-
Blue
Red
Blue
White
Red
Black
Yellow
Red
Yellow
Black
Red
Green
Black
Red
Green
Violet
Red
+
-
Red
+
-
Brown
Brown
Red
Blue
Blue
Red
Green
Green
Red
White
White
Red
J/L Iron Constantan
+
-
+
-
+
-
+
-
Yellow
Black
Black
Yellow
Purple
Yellow
White
Green
Green
White
Green
Green
–
K Nickel Chromium
Nickel Aluminum
+
-
+
-
+
-
+
-
R Platinum/Platinum
13% Rhodium
+
-
+
-
+
-
+
-
S Platinum/Platinum
10% Rhodium
+
-
+
-
+
-
+
-
White
White
–
E Chromel
Constantan
+
-
+
-
–
–
Brown
–
–
Violet
Grey
Red
Grey
–
B Platinum 30% Rh
Platinum 6% Rh
+
-
–
–
–
–
–
–
–
–
–
N Nicrosil / Nisil
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RETURN REQUESTS / INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY
PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER
SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the
outside of the return package and on any correspondence. The purchaser is responsible for shipping charges, freight,
insurance and proper packaging to prevent breakage in transit.
FOR NON-WARRANTY REPAIRS, consult OMEGA for current
repair charges. Have the following information available
BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST of the repair,
2. Model and serial number of the product, and
3.Repair instructions and/or specific problems relative to the
FOR WARRANTY RETURNS, please have the following
information available BEFORE contacting OMEGA:
1.Purchase Order number under which the product was
PURCHASED,
2.Model and serial number of the product under warranty,
and
3.Repair instructions and/or specific problems relative to the
product.
product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2003 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced,
translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written
consent of OMEGA ENGINEERING, INC.
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period
®
of 37 months from date of purchase. The OMEGA Warranty adds an additional one (1) month grace period to the normal
three (3) years product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an
Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found
to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any
action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered
with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration;
improper specification; misapplication; or misuse or other operating conditions outside of OMEGA’s control. Components which
wear are not warranted, including but not limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any
omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information
provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and
free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR
IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth
herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty,
negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which
liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under
10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should
any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any
way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language, and, additionally,
purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use
of the Product(s) in such a manner.
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Where Do I Find Everything I Need for Process Measurement
and Control? OMEGA…Of Course!
TEMPERATURE
DATA ACQUISITION
Thermocouple, RTD
Panels & Assemblies
&
Thermistor Probes, Connectors,
Data Acquisition
&
Engineering Software
Communications-Based Acquisition Systems
Plug-in Cards for Apple, IBM & Compatibles
Datalogging Systems
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
Recorders, Printers & Plotters
HEATERS
PRESSURE, STRAIN AND FORCE
Heating Cable
Transducers
&
Strain Gages
Cartridge & Strip Heaters
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories
Immersion
Flexible Heaters
Laboratory Heaters
&
Band Heaters
ENVIRONMENTAL MONITORING
AND CONTROL
FLOW/LEVEL
Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Metering & Control Instrumentation
Refractometers
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers
Pumps
Air, Soil & Water Monitors
Industrial Water Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments
&
Tubing
&
pH/CONDUCTIVITY
pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH
&
Conductivity Equipment
M4084
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