FPDM1000 SERIES
Positive Displacement
Mechanical Flowmeters
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To the owner:
IMPORTANT INFORMATION
Thank you for purchasing an OMEGA
FPDM Series Flowmeter. Please take a few
minutes to read through the manual before
installing and operating your meter. If you
have any problems with the meter, refer to
the Maintenance and Troubleshooting sec-
tions of the manual.
Please read this information
!
carefully before use!
▲
Before use, confirm the fluid to be used is
compatible with the meter or consult with
OMEGA for advice.
To prevent damage from dirt or foreign
matter, OMEGA recommends a Y or bas-
ket type 60 mesh strainer be installed as
close as possible to the inlet side of the
meter. (If required, contact OMEGA for fur-
ther information.)
This manual contains connection and op-
erating instructions for the OMEGA FPDM
Series meters with mechanical displays.
This includes the following models:
FPDM1004
FPDM1005
FPDM1006
FPDM1007
NOTE: When a strainer is installed it should
be regularly inspected and cleaned.
Failure to keep the strainer clean will
dramatically effect flowmeter perfor-
mance.
The OMEGA FPDM Series Flowmeter has
incorporated the oval rotor principal into
its design. This has proven to be a reliable
and highly accurate method of measuring
flow. Exceptional repeatability and high ac-
curacy over a wide range of fluid viscosi-
ties and flowrates are features of the
OMEGA FPDM Series Flowmeter design.
The low pressure drop and high pressure
rating means the OMEGA FPDM Series
Flowmeter is suitable for both gravity and
pump (in-line) applications.
To prevent damage to the meter, slowly fill
the system with fluid. This will prevent dam-
age caused by air purge.
NOTE: Failure to do this could damage the
meter.
For pump applications, turn off the pump
at the end of each day.
The OMEGA FPDM Series Flowmeters are
available in either Aluminum or 316 Stain-
less Steel. Standard rotors are made from
PPS.
The OMEGA FPDM Series mechanical dis-
plays have a resettable batch totalizer and
non-resettable accumulative totalizer.
1
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Figure 2
INSTALLATION
1. OMEGA recommends that when set-
ting up pipework for meter installations,
a bypass line be included in the de-
sign. This provides the facility for a
meter to be removed for maintenance
without interrupting production. (See
Figure 1)
▲
R I G H T
▲
Figure 1
R I G H T
Flow Inlet
Bypass Line
W R O N G
▲
Strainer
NOTE: Incorrect installation can cause pre-
mature wear of meter components
Flow Outlet
7. Do not overtighten meter connections.
8. It is important that after initial installa-
tion you fill the line slowly, high speed
air purge could cause damage to the
rotors.
2. Use thread sealant on all pipe threads.
3. For pump applications, ensure pipe
work has the appropriate working pres-
sure rating to match the pressure out-
put of the pump.
9. Test the system for leaks.
10. Check the strainer for swarf or foreign
material. After the first 200 litres, check
periodically – particularly if the flowrate
decreases.
4. Install a wire mesh strainer (Y or bas-
ket type 60 mesh) as close as possible
to the inlet side of the meter.
5. Ensure that the meter is installed so
that the flow of the liquid is in the di-
rection of the arrows embossed on the
meter body.
6. The meter can be installed in any ori-
entation as long as the meter shafts are
in a horizontal plane. (See Figure 2) The
register assembly may be oriented to
suit the individual installation.
2
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OPERATION
SERVICE INSTRUCTIONS
When fluid passes through the meter, the
rotors turn. The gear located on top of one
of the rotors drives the mechanical regis-
ters gear train which provides an accurate
readout.
Disassembly:
Ensure that the fluid supply to the meter is
disconnected, and the line pressure is re-
leased before disassembly. Refer to the
exploded parts diagram on page 6.
1. Remove the four screws located on the
face of the register. Then remove the
faceplate cover including register as-
sembly.
2. Remove the four register mounting
screws. Then remove the lower half of
the register housing.
3. Remove the six coverplate screws and
remove the coverplate.
4. Remove the four meter cap screws and
remove the meter cap.
5. Remove rotors.
Reassembly:
1. Clean all components before reassem-
bly.
2. Before reassembly, check the condition
of the rotors. Replace if necessary.
3. Replace the rotor (with the gear) on the
short shaft in the housing. Then place
the second rotor onto the shaft so as
the rotors are at 90 degrees to each
other. (See Figure 3)
Figure 3
Rotor #1
Rotor #2
Rotors must be at 90 to each other
°
3
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Check rotor operation by turning either
of the rotors. If the rotors are not in mesh
correctly or do not move freely, remove
one of the rotors and replace it correctly
at 90 degrees to the other rotor. Recheck
the operation of the rotors.
10. Place the coverplate onto the meter.
Replace the coverplate screws and
tighten the six cap head screws firmly.
11. Place the lower coverplate of the regis-
ter into position. Replace the four screws
and tighten.
4. Inspect the gears in the meter cap for
wear. Replace if required - refer to spare
parts on page 6.
12. Position the register correctly on top of
the lower register cover. Replace the four
screws and tighten.
5. Replace the O-ring into the groove in
the meter cap. If the O-ring has been
distorted or is damaged in any way, re-
place it with a new part.
13. Test the meter by turning the rotors with
a finger or by applying low air pressure
(no more than a good breath) to one end
of the meter, before returning meter to
the line.
6. Replace the meter cap. Make sure the
meter cap and the gear on the rotor
meshes correctly with the gear in the
meter cap. Insert the allen screws and
tighten in the sequence 1, 4, 2 and 3.
7. Inspect the bevel gear, O-ring and out-
put gear for wear or damage. Replace
faulty components if necessary.
8. Replace the output shaft, bush and seal.
Disassembly of output shaft:
a. Remove the bevel gear.
b. Remove the circlip and push out the
output shaft assembly, including the
washer.
c. Remove the seal.
d. Carefully press out the output shaft
bush (if required).
Assembly of output shaft:
a. Carefully press the new output shaft
bush into place. (Use Loctite Primer
7471, as per instructions, followed
by sealant Loctite 262.)
b. Insert a new seal into the groove of
the output shaft bush.
c. Replace the output gear and washer
and replace the circlip to lock the
output gear shaft into place.
d. Replace the bevel gear and tighten
the grub screw onto the flat face of
the shaft.
9. Place the O-ring into the groove in the
meter cap. Replace the O-ring seal if
required.
4
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TROUBLESHOOTING
Symptom
Probable Cause
Corrective Action
FLUID WILL NOT
FLOW THROUGH
THE METER
1. Foreign matter blocking
rotors
Dismantle meter, clean rotors. Strainer must
be fitted in-line.
2. Line strainer blocked
3. Damaged rotors
Clean strainer.
Replace rotors. Strainer must be fitted in-line.
Re-adjust connections.
4. Meter connections over-
tightened
5. Fluid is too viscous
See specifications for maximum viscosity.
Clean strainer.
REDUCED FLOW
THROUGH THE
METER
1. Strainer is partially
blocked
2. Fluid is too viscous
See specifications for maximum viscosity.
METER READING 1. Fluid flowrate is too high
See specifications for minimum and maximum
flowrates.
INACCURATE
or too low
2. Fluid is too viscous
Bleed air from system.
3. Excess wear caused by
incorrect installation
Check meter body and rotors. Replace as
required. Refer to installation instructions.
FLUID FLOWS
BUT NO READING
ON METER
1. Bevel gear is loose on
on shaft
Tighten grub screws.
2. Rotor drive gear is
damaged
Replace rotor.
3. Transmission gears
damaged
Replace gears.
4. Register gears damaged
Replace register assembly.
FLUID LEAKS
INTO REGISTER
1. Seal worn or damaged
on the coverplate
Replace seal. Check seal compatibility with
fluid.
5
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METER PARTS LISTING
Model: FPDM1004
1
2
3
4
7
*
20
6
*
21
10
11
13
12
14
15
16
17
5
8 / 9
8A / 9A O-Ring Only
= Parts for US Gallon models only.
u = Recommended Spare Parts to stock.
Bold Text = Indicates Stainless Steel model parts.
*
Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
1
1
2
2
3
3
4
4
4
4
5
5
6
6
7
8
8A
9
9A
10
10
11
11
12
12
12
12
1
1
1
1
2
2
1
1
1
1
4
4
1
1
1
1
1
1
1
1
1
1
1
6
6
6
6
MS298N
MS337N
BS145TES
BS145VS
MS342MS
MS342MHS
MS554S
MS547S
MS545S
MS546S
MS346S
MS350S
MS539S
MS541S
MS77S
Meter Body 1/2 in. NPT (Aluminum)
Meter Body 1/2 in. NPT (Stainless Steel)
O-Ring (Teflon®)
O-Ring (Viton)
Rotors PPS (Polyphenylene Sulfide Resins)
High Viscosity Rotors (PPS)
Meter Cap Litres (Aluminum)
Meter Cap US Gallons (Aluminum)
Meter Cap Litres (Stainless Steel)
Meter Cap US Gallons (Stainless Steel)
Meter Cap Screws (Standard)
Meter Cap Screws (Stainless Steel)
Complete Gear Set - Litres
Complete Gear Set - US Gallons
Output Gear & Shaft Assembly
Coverplate Seal / Bush Set Standard
Solvent O-Ring (Kalrez)
Coverplate Seal / Bush Set Solvent
O-Ring (Viton)
O-Ring (Teflon®)
O-Ring (Viton)
Coverplate (Aluminum) includes Bush
Coverplate (Stainless Steel) includes Bush
Coverplate Screws - Litre Model
Coverplate Screws (S/Steel) - Litre Model
Coverplate Screws - US Gallon Model
u
u
u
u
u
u
u
u
u
u
u
u
u
u
u
MS78S
OR42CS
MS78C
V7-007S
BS145TES
BS145VS
MS99S
MS99-1S
MS312S
MS313S
MS419S
MS420S
u
u
u
u
Coverplate Screws (S/Steel) - US Gallon Model
6
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Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
13
14
15
16
16
17
20
20
21
21
1
1
4
1
1
4
1
1
1
1
u
MS83S
MS140S
MS111S
MS141M4GS
MS141UGS
MS129S
BS145TES
BS145VS
MS423S
Bevel Gear Set
Bottom Register Coverplate
Mounting Screws
Register Assembly w/Coverplate - Litres
Register Assembly w/Coverplate - US Gallons
Register Body Screws
O-Ring (Teflon®)
O-Ring (Viton)
Spacer Ring (Aluminum) US Gallon Model Only
Spacer Ring (S/Steel) US Gallon Model Only
u
u
u
u
u
u
u
u
MS423-1S
SPECIFICATIONS
Mechanical Meter Models
Flow Ranges (LPM or GPM)
Above 5 centipoise
1 to 30 / 0.26 to 8
Below 5 centipoise
3 to 25 / 0.8 to 6.6
Accuracy of Reading
± 1%
Maximum Viscosity
Maximum Operating Pressure
Operating Temperature Range
1000 Centipoise
3450 kPa / 500 PSI / 34.5 Bar
-10°C to 80°C (+14°F to +176°F)
*
Unless high viscosity rotors are fitted.
*
DIMENSIONS
7
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METER PARTS LISTING
Model: FPDM1005
1
2
1A
10
6
11
13
12
14
15
16
3
17
4
5
8 / 9
8A / 9A O-Ring Only
u = Recommended Spare Parts to stock.
Bold Text = Indicates Stainless Steel model parts.
Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
1
1
1
1
2
2
3
3
3
3
3
3
4
4
4
4
5
5
6
6
7
8
8A
9
9A
10
10
1
1
1
1
1
1
2
2
2
2
2
2
1
1
1
1
6
6
1
1
1
1
1
1
1
1
1
MS188N
MS186N
MS188F
MS186F
BS235TES
BS235VS
MS72S
MS72-1HS
MS72-1S
MS72-2S
MS72HS
MS72HG-2S
MS75S
MS75US
MS251S
MS251US
MS114S
MS200S
MS294S
MS316S
MS77S
Meter Body 1 in. NPT (Aluminum)
Meter Body 1 in. NPT (Stainless Steel)
Meter Body 1 in. ANSI 150 lb. Flange (Aluminum)
Meter Body 1 in. ANSI 150 lb. Flange (S/Steel)
O-Ring (Teflon®)
u
u
u
u
u
u
u
u
O-Ring (Viton)
Rotors (PPS) with Brass Hub
High Viscosity Rotors (SS) with S/Steel Hub
Rotors (SS) with S/Steel Hub
Rotors (PPS) with S/Steel Hub
High Viscosity Rotors (PPS)
High Viscosity Rotors (PPS) with S/Steel Hub
Meter Cap Litres (Aluminum)
Meter Cap Gallons (Aluminum)
Meter Cap Litres (Stainless Steel)
Meter Cap US Gallons (Stainless Steel)
Meter Cap Screws (Standard)
Meter Cap Screws (Stainless Steel)
Complete Gear Set - Litres
Complete Gear Set - US Gallons
Output Gear & Shaft Assembly
Coverplate Seal / Brush Set (Viton)
Solvent O-Ring (Kalrez)
Coverplate Seal / Brush Set Solvent
O-Ring (Viton)
u
u
u
u
u
u
u
u
u
u
u
MS78VS
OR42C
MS78C
V7-007S
BS145TES
BS145VS
O-Ring (Teflon®)
O-Ring (Viton)
8
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Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
11
11
12
12
13
14
15
16
16
17
18
19
1
1
6
6
1
1
4
1
1
4
1
1
MS99S
MS99-1S
MS312S
MS313S
MS83S
Coverplate (Aluminum) includes Bush
Coverplate (Stainless Steel) includes Bush
Coverplate Screws
Coverplate Screws (Stainless Steel)
Bevel Gear Set
Bottom Register Coverplate
Mounting Screws
Register Assembly with Coverplate - Litres
Register Assembly with Coverplate - US Gallons
Register Body Screws
u
u
u
MS140
u
u
u
u
MS111S
MS141S
MS141US
MS129S
Customer to specify model Legend Plate (not shown) includes Hammer Screws
MS37 Warning Label (not shown)
Note: Complete Register Assembly Part Numbers; “Litre” Register - MS84, “US Gallons” Register - MS84U.
SPECIFICATIONS
Mechanical Meter Models
Flow Ranges (LPM or GPM)
Above 5 centipoise
Below 5 centipoise
Accuracy of Reading
6 to 120 / 1.6 to 32
10 to 100 / 2.6 to 26
± 1%
Maximum Viscosity
Maximum Operating Pressure
Maximum Operating Temperature
1000 Centipoise
3450 kPa / 500 PSI / 34.5 Bar or Flange Rule
80°C / 176°F (Stainless Steel Models 120°C / 248°F)
*
Unless High Viscosity Rotors are fitted.
*
DIMENSIONS
9
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METER PARTS LISTING
Model: FPDM1006
1
2
10
1
6
11
13
12
14
15
16
3
17
4
5
8 / 9
8A / 9A O-Ring Only
u = Recommended Spare Parts to stock.
Bold Text = Indicates Stainless Steel model parts.
Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
1
1
1
1
2
2
3
3
3
3
3
4
4
4
4
5
5
6
6
7
8
8A
9
9A
10
10
1
1
1
1
1
1
2
2
2
2
2
1
1
1
1
6
6
1
1
1
1
1
1
1
2
2
MS192N
MS190N
MS192F
MS190F
BS243TES
BS243VS
MS92S
MS92-1S
MS92-2S
MS92HS
MS92HS-2S
MS222S
MS222US
MS223S
MS223US
MS116S
MS180S
MS295S
MS317S
MS77S
Meter Body 11/2 in. NPT (Aluminum)
Meter Body 11/2 in. NPT (Stainless Steel)
Meter Body 11/2 in. ANSI 150 lb. Flange (Aluminum)
Meter Body 11/2 in. ANSI 150 lb. Flange (S/Steel)
O-Ring (Teflon®)
u
u
u
u
u
u
u
O-Ring (Viton)
Rotors (PPS) with Brass Hub
Rotors (316 Stainless Steel)
Rotors (PPS) with S/Steel Hub
High Viscosity Rotors (PPS)
High Viscosity Rotors (PPS) with S/Steel Hub
Meter Cap Litres (Aluminum)
Meter Cap Gallons (Aluminum)
Meter Cap Litres (Stainless Steel)
Meter Cap US Gallons (Stainless Steel)
Meter Cap Screws (Standard)
Meter Cap Screws (Stainless Steel)
Complete Gear Set - Litres
Complete Gear Set - US Gallons
Output Gear & Shaft Assembly
Coverplate Seal / Brush Set (Viton)
Solvent O-Ring (Kalrez)
Coverplate Seal / Brush Set Solvent
O-Ring (Viton)
u
u
u
u
u
u
u
u
u
u
u
MS78VS
OR42CS
MS78C
V7-007S
BS145TES
BS145VS
O-Ring (Teflon®)
O-Ring (Viton)
10
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Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
11
11
12
12
13
14
15
16
16
17
1
1
6
6
1
1
4
1
1
4
MS99S
MS99-1S
MS312S
MS313S
MS83S
Coverplate (Aluminum) includes Bush
Coverplate (Stainless Steel) includes Bush
Coverplate Screws - Litre Model
Coverplate Screws (S/Steel) - Litre Model
Bevel Gear Set
Bottom Register Coverplate
Mounting Screws
Register Assembly Complete - Litres
Register Assembly Complete - US Gallons
Register Body Screws
u
u
u
MS140RS
MS111S
u
u
u
u
MS141RS incl 15 & 17
MS141RUS incl 15 & 17
MS129S
SPECIFICATIONS
Mechanical Meter Models
Flow Ranges (LPM or GPM)
Above 5 centipoise
10 to 250 / 2.6 to 66
Below 5 centipoise
15 to 235 / 4 to 62
Accuracy of Reading
± 1%
Maximum Viscosity
1000 Centipoise
*
Maximum Operating Pressure**
1800 kPa / 260 PSI / 18 Bar or Flange Rule
-10°C to +80°C (+14°F to +176°F) - Aluminum
-10°C to +120°C (+14°F to +248°F) - Stainless Steel
Maximum Operating Temperature
Unless High Viscosity Rotors are fitted.
** Meter conforms to PED 97/23/EC CAT 1.
*
DIMENSIONS
11
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METER PARTS LISTING
Model: FPDM1007
1
5
2
*
10
1
*
20
6
10
11
13
12
14
3
4
7
15
16
17
5
8 / 9
8A / 9A O-Ring Only
= Parts for US Gallon models only.
u = Recommended Spare Parts to stock.
*
Bold Text = Indicates Stainless Steel model parts.
Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
1
1
1
1
2
2
3
3
3
3
4
4
4
4
5
5
6
6
7
8
8A
9
9A
10
10
11
11
1
1
1
1
1
1
2
2
2
1
1
1
1
1
6
6
1
1
1
1
1
1
1
2
2
1
1
MS520N
MS520-1N
MS483F
Meter Body 2 in. NPT (Aluminum)
Meter Body 2 in. NPT (Stainless Steel)
Meter Body 2 in. ANSI 150 lb. Flange (Aluminum)
Meter Body 2 in. ANSI 150 lb. Flange (S/Steel)
O-Ring (Teflon®)
MS481F
u
u
u
u
u
u
BS252TES
BS252VS
MS105-1S
MS105-2S
MS105HS-2S
MS105-1HS
MS232S
MS335US
MS233S
MS425US
MS243S
MS282S
MS363S
MS470S
MS77S
MS78VS
OR42CS
MS78C
O-Ring (Viton)
Rotors (316 S/Steel) with S/Steel Pinion
Rotors (PPS) with S/Steel Pinion
High Viscosity Rotors (PPS) with S/Steel Pinion
High Viscosity Rotors (S/Steel) S/Steel Pinion
Meter Cap Litres (Aluminum)
Meter Cap US Gallons (Aluminum)
Meter Cap Litres (Stainless Steel)
Meter Cap US Gallons (Stainless Steel)
Meter Cap Screws (Standard)
Meter Cap Screws (Stainless Steel)
Complete Gear Set - Litres
Complete Gear Set - US Gallons
Output Gear & Shaft Assembly
Coverplate Seal / Brush Set (Viton)
Solvent O-Ring (Kalrez)
u
u
u
u
u
u
u
u
u
u
Coverplate Seal / Brush Set Solvent
O-Ring (Viton)
O-Ring (Teflon®)
O-Ring (Viton)
Coverplate (Aluminum) includes Bush
Coverplate (Stainless Steel) includes Bush
V7-007S
BS145TES
BS145VS
MS99S
MS99-1S
12
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Item
Rec.
Part or Set
No. Qty. Parts (Order from this column only) Part Description
12
12
12
12
13
14
15
16
16
17
20
20
6
6
6
6
1
1
4
1
1
4
1
1
u
u
u
u
u
MS312S
MS313S
MS419S
MS420S
MS83S
Coverplate Screws - Litre Model
Coverplate Screws (S/Steel) - Litre Model
Coverplate Screws - US Gallon Model
Coverplate Screws (S/Steel) - US Gallon Model
Bevel Gear Set
Bottom Register Coverplate
Mounting Screws
Register Assembly with Coverplate - Litres
Register Assembly with Coverplate - US Gallons
Register Body Screws
Spacer Ring (Aluminum) - US Gallons Model Only
Spacer Ring (S/Steel) - US Gallon Model Only
MS140
u
u
u
u
u
u
MS111S
MS141S
MS141US
MS129S
MS423S
MS423-1S
Note: Complete Register Assembly Part Numbers; “Litre” Register - MS84, “US Gallons” Register - MS84U.
SPECIFICATIONS
Mechanical Meter Models
Flow Ranges (LPM or GPM)
Above 5 centipoise
Below 5 centipoise
Accuracy of Reading
15 to 350 / 3.96 to 92.46
30 to 300 / 7.93 to 79.25
± 1%
Maximum Viscosity
1000 Centipoise
*
Maximum Operating Pressure**
1800 kPa / 260 PSI / 18 Bar
-10°C to +80°C (+14°F to +176°F) - Aluminum
-10°C to +120°C (+14°F to +248°F) - Stainless Steel
Operating Temperature Range
Unless High Viscosity Rotors are fitted.
** Meter conforms to PED 97/23/EC CAT 1.
*
DIMENSIONS
13
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M-4103/0405
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