MP Series
Multipulse
Positive
Displacement
Flowmeters
Multipulse Positive
Displacement Flowmeters
Quality & Simplicity in Flow Measurement
Innovative Technologies, Creative Solutions
MP
Multipulse Positive
Displacement Flowmeters
Introduction
Multipulse Positive Displacement Flowmeters provide:
Pulse or LCD Display
 High levels of accuracy and
repeatability.
 Wide range of liquids from
low viscosity solvents and
chemicals to viscous oils,
greases and food bases.
 Low pressure drop allows for
economical pump selection
or gravity flow applications.
MP
Multipulse Positive
Displacement Flowmeters
Principal of Operation
Principal of Operation
The MP series uses the
oscillating - piston
principle where the
passage of
liquid causes a piston to
oscillate smoothly in a
circular motion within the
measuring chamber.
Each piston cycle passes a known volume of liquid from the inlet
to the outlet port, magnets in the piston activate the reed switch
and the solid state sensor to provide pulse outputs for remote
flow, measurement and process control.
MP
Multipulse Positive
Displacement Flowmeters
Principal of Operation
The diagram below shows the transition of fluid from the Inlet Port
through the Measuring Chamber and then out the Outlet Port.
MP
Principal of Operation
MP
Principal of Operation
MP
Multipulse Positive
Displacement Flowmeters
Features/Benefits
Low Number of Parts
IP67/ Nema 4x Flameproof
Terminal Cover
Pulse output board with both hall effect and
reed switch (intrinsically safe with approved
barrier)
Body and manifold have no
stagnate chambers
Free rotating piston is the only
moving part
Partition
MP
Multipulse Positive
OutputsDisplacement Flowmeters
Two Pulse Outputs
Reed Switch Output - Provides a voltage
free contact closure. The reed switch is
classed as a 'simple device' and can be
used in hazardous areas when connected
via an approved intrinsically safe barrier.
Square Wave Output - An open collector
pulse output produced by a solid state hall
effect device. This 3 wire device requires
5-24vdc excitation voltage and produces
a high resolution square wave output.
MP
Multipulse Positive
FeaturesDisplacement Flowmeters
Multipulse Features

316L stainless steel, aluminium or UPVC
construction ( selected Sizes )

Accuracy +/- 0.5% of rate

Has no stagnate chambers or cavities

Measures low and high viscosity
liquids to 1,000,000 cp

No requirement for flow conditioning

Adaptable to hygienic installations

High Pressure models to 5,150 psi (350 bar)

Flameproof or intrinsically safe
electronics (optional)

Insensitive to mounting orientation.
MP
Multipulse Positive
Flowmeters
Stainless Steel Displacement
Models
Sizes:
1/2” (15mm)
1” (25mm)
1 1/2” (40mm)
2” (50mm)
Material:
316LST.ST body and Manifold
Peek or carbon piston and bearing
special materials consult factory
Flow Ranges:
0.04 - 2.2 GPM
0.5 - 13.2 GPM
1.1 - 35 GPM
3.1 - 88 GPM
(.17-8.3 LPM)
(2 - 50 LPM)
(4.2 - 133.3 LPM)
(11.7-333.3 LPM)
MP
Multipulse Positive
Flowmeters
Stainless Steel Displacement
Models
Process Connections:
Threaded BSPP/NPT female thread
flanged, ANSI/DIN standards
Pressure Rating:
740 - 5,150 psi
(50-350 Bar)
Temperature Rating:
-40ºF to +300ºF
(-40ºC to +150ºC)
for higher temperature
contact factory
Multipulse Outputs:
Reed switch, NPN open
Collector output standard
MP
Multipulse Positive
Flowmeters
Stainless Steel Displacement
Models
Options:
- Explosion Proof or Intrinsically
safe operation
- Integral or remote high speed preset
batch controller
- Integral or remote battery power
flow rate totaliser with scaled
pulse output, analog and flow
alarm outputs.
Applications:
Chemical and allied products,
pharmaceuticals, petroleum, deionised
water, container filling machines, fuel
additives, asphalt, paint, synthetic
rubber, latex, detergent and soap,
pigments.
MP
Multipulse Positive
Displacement Flowmeters
Aluminum Models
Sizes:
1/2” (15mm)
1” (25mm)
1 1/2” (40mm)
2” (50mm)
Material:
Aluminium body and Manifold
Peek or carbon piston and bearing
special materials consult factory
Flow Ranges:
0.04 - 2.2 GPM
0.5 - 13.2 GPM
1.1 - 35 GPM
3.1 - 88 GPM
(.17-8.3 LPM)
(2 - 50 LPM)
(4.2 - 133.3 LPM)
(11.7-333.3 LPM)
MP
Multipulse Positive
Displacement Flowmeters
Aluminum Models
Process Connections:
Threaded BSPP/NPT female thread
flanged, ANSI/DIN standards
(lap joint flanges)
Pressure Rating:
300 to 1,200 psi
(20-80 Bar)
Temperature Rating:
-40ºF to +300ºF
(-40ºC to +150ºC)
for higher temperature
contact factory
Multipulse Outputs:
Reed switch, NPN open
Collector output standard
MP
Multipulse Positive
Displacement Flowmeters
Aluminum Models
Options:
- Explosion Proof or Intrinsically
safe operation
- Integral / remote RT rate totalizer.
- Integral or remote battery power
flow rate totaliser with scaled
pulse output, analog and flow
alarm outputs.
Applications:
Metering petroleum products,
diesel, fuel oil, hydraulic oil,
kerosene, LPG, gasoline, alcohol,
solvents, lacquers and selected
chemicals.
MP
Multipulse Positive
Displacement
Flowmeters
High Pressure Stainless
Steel Models
Process Connections:
Threaded BSPP/NPT female thread
flanged, ANSI/DIN standards
specials consult factory
Pressure Rating:
Up to 5,150 psi maximum (350 bar)
Temperature Rating:
-40ºF to +250ºF
(-40ºC to +120ºC)
for higher temperature
contact factory
Multipulse Outputs:
Reed switch, NPN open
Collector output standard
MP
Multipulse Positive
Displacement
Flowmeters
High Pressure Stainless
Steel Models
Sizes:
1/2” (15mm)
1” (25mm)
1 1/2” (40mm)
2” (50mm)
Material:
316LST.ST and Manifold
Peek or carbon piston and
bearing
Flow Ranges:
0.2-10.0 LPM
2 - 50 LPM
4 - 140 LPM
12-330 LPM
Options:
- Explosion Proof or Intrinsically
safe operation
- Integral or remote high speed
preset batch controller
- Integral or remote battery
power
flow rate totaliser with scaled
pulse output, analog and flow
alarm outputs.
Applications:
Hydraulics, lube oils,
mercaptan, petroleum,
deionised water, resins, Mek,
Ethylene oxide, oil and gas
industry, chemical injection.
MP
Multipulse Positive
Displacement Flowmeters
SAP Models
Size:
20mm
Pressure Rating:
60 psi (4 bar)
Material:
UPVC body and Manifold
Carbon filled teflon piston and
bearing
(uv stabilised PVC)
special material consult factory
Temperature Rating:
60 deg C
Flow Ranges:
2.0 - 50.0 LPM
Process Connections:
Threaded BSPP/NPT
female thread
Multipulse Outputs:
Reed switch, NPN open
Collector output standard
Options:
- Intrinsically safe operation
- Remote high speed preset
batch controller
- Remote battery power flow rate
totaliser with scaled pulse output,
analog and flow alarm outputs.
MP
Multipulse Positive
Displacement Flowmeters
SAP Models
Applications:
MP020P flow meter manufactured from UV
stabilized PVC (UPVC) is ideally suited for
special applications associated with
corrosive fluid such as sodium hypochlorite,
acids, photographic solutions or any
chemical compatible with UPVC.
The MP020P has flow range of 2 – 50 LPM
and provides and economical solution for
those difficult fluids compared to more
expensive magnetic flow meters or Coriollis
mass flow meters manufactured from more
exotic materials.
MP
Multipulse Positive
Displacement
Hygienic Stainless Steel
ModelsFlowmeters
Process Connections:
Threaded BSPP/NPT female thread
Tri-clamp hygienic fittings BS/DIN
standards (or equivalent)
Pressure Rating:
750 - 1,500 psi
(50-100 bar)
Temperature Rating:
-40ºF to +300ºF
(-40ºC to +150ºC)
for higher temperature
contact factory
Multipulse Outputs:
Reed switch, NPN open
Collector output standard
MP
Multipulse Positive
Displacement
Hygienic Stainless Steel
ModelsFlowmeters
Sizes:
1/2” (15mm)
1” (25mm)
1 1/2” (40mm)
2” (50mm)
Material:
316LST.ST body and Manifold
Peek or carbon piston and
bearing
Flow Ranges:
0.2 - 10LPM
2 - 50 LPM
4- 140 LPM
12 – 330 LPM
Options:
- Explosion Proof or Intrinsically
safe operation
- Integral or remote high speed preset
batch controller
- Integral or remote battery power
flow rate totaliser with scaled
pulse output, analog and flow
alarm outputs.
Applications:
Pharmaceuticals, cosmetics,
deionised water, food and beverage,
container filing machines, yeast,
confectionery, molasses, liquid sugar,
mayonnaise, chocolate, dairy
products.
MP
Model Prefix
Body Material
Nominal Flow
Spans*
Accuracy
Repeatability
Maximum Pressure
Temperature Range
Piston Material
Multipulse Positive
Flowmeters
Specifications Displacement
- 15mm
MP015S
MP015A
MP015H
316L stainless steel
Aluminium
316L stainless steel
10 to 100 / 100 to 300 & 300 to 600 lph
(2.6 to 160 USgal/hr)
*Turndown (flow range) varies in accordance with effective viscosity of metered liquid
+1% of rate within nominal spans
Accuracy over the full flow range is improved to within + /-0.5% when utilising
the linearisation feature of the optional Trimec RT flow rate totaliser
Typically +0.1% under steady flow conditions
100 Bar (1500 psi)
30 Bar (440 psi)
350 Bar (5150 psi)
Three ranges covering operation from -40 to 150o C (-40 to 300o F)
limited to 80oC (176oF) with integral electronic register
Carbon filled teflon – option PEEK
MP
Multipulse Positive
Flowmeters
Specifications Displacement
- 15mm
MP015S
Model Prefix
O-ring Material
MP015H
viton, EPR (EPDM), teflon encapsulated viton or nitrile (Buna-N)
Reed Switch Output
30vdc maximum voltage, 20mA maximum current
Pulse resolution: 200 pulses / litre (760 pulses / US gallon)
Open Collector
Output
5 to 24vdc (25vdc maximum) 3 wire NPN (sinking current)
20mA maximum current - 1000 metres (3300 ft) maximum transmission
Pulse resolution: nominally 400 pulses / litre (1520 pulses / US gallon)
Electrical Connection
Process
Connections
MP015A
M20 x 1.5 or 1/2" NPT female entries
1
1
/2" BSPP or NPT
/2" ANSI 150/300RF
flanges
1
/2" BSPP or NPT
(Lap Joint flanges
on request)
1
/2" BSPP or NPT
(others on request)
DN15 PN16 - 40 flanges
triclamp hygienic
(others on request)
Environmental
Protection
IP66 (Nema 4), optionally flameproof to Exd IIB T4 (Class 1, Groups C & D)
Recommended
Filtering
150 microns (100 mesh)
MP
Model Prefix
Body Material
Nominal Flow
Range*
Accuracy
Repeatability
Maximum Pressure
Temperature Range
Piston Material
Multipulse Positive
Flowmeters
Specifications Displacement
- 25mm
MP025S
MP025A
MP025H
316L stainless steel
Aluminium
316L stainless steel
120 to 3000 lph
(0.5 to 13.2 USGPM)
*Turndown (flow range) varies in accordance with effective viscosity of metered liquid
+0.5% of rate
Accuracy and turndown can be improved utilising
the linearisation feature of the optional Trimec RT flow rate totaliser
Typically +0.03% under steady flow conditions
100 Bar (1500 psi)
80 Bar (1200 psi)
350 Bar (5150 psi)
Three ranges covering operation from -40 to 150o C (-40 to 300o F)
limited to 80oC (176oF) with integral electronic register
Carbon filled teflon – option PEEK
for special materials - consult factory
MP
Multipulse Positive
Flowmeters
Specifications Displacement
- 25mm
Model Prefix
O-ring Material
Reed Switch Output
Open Collector
Output
MP025S
MP025H
viton, EPR (EPDM), teflon encapsulated viton or nitrile (Buna-N)
30vdc maximum voltage, 20mA maximum current
Pulse resolution: nominally 20 pulses / litre (76 pulses / US gallon)
5 to 24vdc (25vdc maximum) 3 wire NPN (sinking current)
20mA maximum current - 1000 metres (3300 ft) maximum transmission
Pulse resolution: nominally 100 pulses / litre (380 pulses / US gallon)
Electrical Connection
Process
Connections
MP025A
M20 x 1.5 or 1/2" NPT female entries
1" BSPP or NPT
1" ANSI 150/300RF
flanges
1" BSPP or NPT
(Lap Joint flanges
on request)
1" BSPP or NPT
(others on request)
DN25 PN16 - 40 flanges
triclamp hygienic
(others on request)
Environmental
Protection
IP66 (Nema 4), optionally flameproof to Exd IIB T4 (Class 1, Groups C & D)
Recommended
Filtering
250 microns (50 mesh)
MP
Model Prefix
Body Material
Nominal Flow
Range*
Accuracy
Repeatability
Maximum Pressure
Temperature Range
Piston Material
Multipulse Positive
Flowmeters
Specifications Displacement
- 40mm
MP040S
MP040A
MP040H
316L stainless steel
Aluminium
316L stainless steel
250 to 8000 lph
(1.1 to 35 USGPM)
*Turndown (flow range) varies in accordance with effective viscosity of metered liquid
+0.5% of rate
Accuracy and turndown can be improved utilising
the linearisation feature of the optional Trimec RT flow rate totaliser
Typically +0.03% under steady flow conditions
100 Bar (1500 psi)
30 Bar (440 psi)
350 Bar (5150 psi)
Three ranges covering operation from -40 to 150o C (-40 to 300o F)
limited to 80oC (176oF) with integral electronic register
Carbon filled teflon – option PEEK
For special materials - consult factory
MP
Multipulse Positive
Flowmeters
Specifications Displacement
- 40mm
MP040S
Model Prefix
O-ring Material
MP040H
viton, EPR (EPDM), teflon encapsulated viton or nitrile (Buna-N)
Reed Switch Output
30vdc maximum voltage, 20mA maximum current
Pulse resolution: nominally 7.3 pulses / litre (28 pulses / US gallon)
Open Collector
Output
5 to 24vdc (25vdc maximum) 3 wire NPN (sinking current)
20mA maximum current - 1000 metres (3300 ft) maximum transmission
Pulse resolution: nominally 44 pulses / litre (167 pulses / US gallon)
Electrical Connection
Process
Connections
MP040A
M20 x 1.5 or 1/2" NPT female entries
11/2" BSPP or NPT
1 /2" ANSI 150/300RF
flanges
1
11/2" BSPP or NPT
(Lap Joint flanges
on request)
11/2" BSPP or NPT
(others on request)
DN40 PN16 - 40 flanges
triclamp hygienic
(others on request)
Environmental
Protection
IP66 (Nema 4), optionally flameproof to Exd IIB T4 (Class 1, Groups C & D)
Recommended
Filtering
250 microns (50 mesh)
MP
Model Prefix
Body Material
Nominal Flow
Range*
Accuracy
Repeatability
Maximum Pressure
Temperature Range
Piston Material
Multipulse Positive
Flowmeters
Specifications Displacement
- 50mm
MP050S
MP050A
MP050H
316L stainless steel
Aluminium
316L stainless steel
700 to 20,000 lph
(3 to 88 USGPM)
*Turndown (flow range) varies in accordance with effective viscosity of metered liquid
+0.5% of rate
Accuracy and turndown can be improved utilising the
linearisation feature of the Trimec RT flow rate totaliser
Typically +0.03% under steady flow conditions
38 Bar (560 psi)
20 Bar (300 psi)
100 Bar (1500 psi)
Three ranges covering operations from -40 to 150o C (-40 to 300o F)
limited to 80oC (176oF) with integral electronic register
carbon filled teflon – option PEEK
For special materials - consult factory
MP
Multipulse Positive
Flowmeters
Specifications Displacement
- 50mm
Model Prefix
O-ring Material
Reed Switch Output
Open Collector
Output
MP050S
MP050H
viton, EPR (EPDM), teflon encapsulated viton or nitrile (Buna-N)
30vdc maximum voltage, 20mA maximum current
Pulse resolution: nominally 2.5 pulses / litre (9.5 pulses / US gallon)
5 to 24vdc (25vdc maximum) 3 wire NPN (sinking current)
20mA maximum current - 1000 metres (3300 ft) maximum transmission
Pulse resolution: nominally 20 pulses / litre (76 pulses / US gallon)
Electrical Connection
Process
Connections
MP050A
M20 x 1.5 or 1/2" NPT female entries
2" BSPP or NPT
2" ANSI 150/300RF
flanges
2" BSPP or NPT
(Lap Joint flanges
on request)
2" BSPP or NPT
(others on request)
DN50 PN16 - 40 flanges
triclamp hygienic
(others on request)
Environmental
Protection
IP66 (Nema 4), optionally flameproof to Exd IIB T4 (Class 1, Groups C & D)
Recommended
Filtering
500 microns (25 mesh)
MP
Multipulse Positive
Displacement Flowmeters
Key Selling Highlights
The product concept has advantages over conventional
positive displacement flow meters.
 Up to 70% cost saving for an installation requiring a
stainless steel flow meter.
 Has only one moving part giving extended troublefree working life.
 Installation flexibility in vertical or horizontal pipes, no
need for straight pipes runs or conditioned flow.
 Has no stagnate chambers to accumulate
contaminants or stale product.
MP
Key Selling Highlights
 No modifications are needed when measuring
high viscosity liquids.
 Can be cleaned in place using chemicals or
controlled steam pressure/temperature.
 Quick and easy to clean in place without the
need for special tools.
 Extremely compact and comparatively light
weight.
 Limited number of spare parts needed to support
the product.
MP
Multipulse Positive
Displacement
Flowmeters
Key Market Sales
Areas
Key Market Sales Areas
The features of the Multipulse have broad appeal in all areas of industry and
provide low cost of ownership and maintenance.









Chemical manufacturers or handling - acids or solvents.
Pharmaceutical's - medical and cosmetic liquids.
Pet food manufacturers, stock feed and poultry plants injecting food
supplements and colourings.
Container filling machines and bottling equipment manufacturers.
Industries requiring 'in-line cleaning' confectionery, food and
drink manufacturing.
Petroleum refineries, petroleum distribution, fuel additive injection
systems, lube oil and grease dispensing.
Hydraulics and hydraulic driven epoxy injection systems.
Foam rubber manufacturers for injecting chemicals.
Paper manufacturing and related printing ink applications.
MP
Chemicals
Additives
Resins
Acids
Alcohols
Essences
Edible Oils
Flavourings
Food Bases
Perfumes
Applications
Adhesives
Emulsions
Insecticides
Paints
Inks
Oils
Fuels
Grease
Solvents
Lubricants
MP
Multipulse Positive
Displacement Flowmeters
Application
Multi Head Filling Machine
MP
Multipulse Positive
Displacement Flowmeters
Summary
Trimec has achieved universal acceptance of its MP Series
Positive Displacement Flowmeters, in a diversity of
industrial flow measurement applications, as a result of
innovative design concepts featured in its range of flow
products.
The meter capability has gained acceptance in the
International Markets of the World, with established sales
in Europe, Asia and now with entry into the United States
market, Trimec is assured of being recognized as a leading
manufacturer of quality flow measurement products.