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       Model number information   3 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                
 
 
 
 
 
 
 
 
 

Specifications      4 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 

Model coding

15mm  ( 1/2" )
25mm  ( 1" )
40mm  ( 11/2" )
50mm  ( 2" )

Body material

A

Aluminum             

S

316 Stainless Steel

H

High pressure stainless

Rotor material 

Aluminum
Stainless steel

9

Application specific

Bearing type

1

Ceramic 

( SS rotors )

4

Hardened steel roller bearings 

(  Alum. rotors )

O-ring material

1

Viton 

 ( standard ) -15~+200ºC [ -5~+400ºF ]

2

Ethylene Propylene Rubber 

-150ºC (300ºF) max.

3

Teflon encapsulated viton 

-150ºC (300ºF) max. 

4

Buna-N (

Nitrile)  -65~+100ºC (-53~+212ºF)

Temperature limits

-

2

120ºC 

( 250ºF )

 - 

see note 1  

-

5

120ºC 

( 250ºF )

 - 

see note 2  

Process connections 

1

 BSP female threaded 

2

 NPT female threaded 

4

 ANSI-150 RF flanges 

5

 ANSI-300 RF flanges

6

 PN16 DIN flanges

9

 Customer nominated 

Cable entries

Code O

 with mechanical register options

0

3~6mm cable gland 

(B2/B3 options)

1

M20 x 1.5mm

2

1/2" NPT  

                      M o d e l  N o.  E x a m p l e

A

4

1

 -

5

1

1

R2

Integral options

QP

Quadrature pulse output 

E1

Explosion proof ~ Exd

Q1

Exd with Quadrature pulse

B2

BT11 dual totaliser

B3

Intrinsically safe

 

BT11

 

(I.S.)

R2

RT12 Flow Rate Totaliser 

R3

Intrinsically safe

 

RT12

 

(I.S.)

E0

EB10 batch controller

M*

  =   

M1

 litres,     

M2 

gallons

M*

3 digit mechanical reset totaliser

M* 

 =   

M3

 litres,     

M4

 gallons

M*

4 digit mechanical reset totaliser

SB

Specific build requirement

(1) 120ºC (250ºF) rating of the pulse meter, 80ºC (180ºF) rating with BT, RT & EB options.

      See temperature code 5 for higher temperature with BT, RT, & EB

(2) Cooling fin is fitted with integral instruments for operation between 80~120ºC (180~250ºF)

consult factory

OM015

OM025

4
5

IECEX & ATEX approved

flow rate, totals & all outputs

OM025

2 NPN open collector phased outputs

4

dc 2 stage batch controller

OM040
OM050

accum. & reset totals, pulse output

IECEX & ATEX approved

IECEX & ATEX approved

IECEX & ATEX approved

Specifications

Model prefix :  

OM015

OM025

OM040

OM050

Nominal size ( inches )

15mm  

(1/2")

25mm  

(1")

40mm

 (11/2")

50mm  

(2")

* Flow range ( litres / min ) 

1 ~ 40

10 ~ 150

15 ~ 250

30 ~ 450

* Flow range ( USGM ) 

0.26 ~ 10.6

2.6 ~ 40

4 ~ 66

8 ~ 120

Accuracy @ 3cp

Repeatability

Temperature range

Maximum pressure  

( threaded meters ) 

aluminium

68  

( 1000 )

68  

( 1000 )

30  

( 440 )

20  

( 300 )

316L stainless

100  

( 1500 )

100  

( 1500 )

100  

( 1500 )

38

   ( 560 )

high pressure stainless

refer factory for options

Protection class
Recommended filtering        
(minimum)

150 microns  

( 100 mesh )

 minimum

E lectrical 

- for pulse meters 

 

(see also optional outputs)

Output pulse resolution

 :

pulses / litre  

 ( pulses / US gallon )

 - nominal

Reed switch

83  

( 314 )

27  

( 102 )

13  

( 50 )

6.5  

( 25 )

Hall effect

166  

( 628 )

107  

( 405 )

52.6  

( 200 )

26  

( 99 )

Quadrature Hall option

166  

( 628 )

53.5  

( 203 )

26.3  

( 100 )

13  

( 50 )

Reed switch output

Hall effect output (NPN)

Optional functions

Display

flowrate, total 

(accumulative & resettable)

Preset batching

 1 & 2 stage high speed batch control

IP65 3 digit reset mechanical totaliser

999.9 ltr/gal

9999 litres or gallons

IP65 4 digit reset mechanical totaliser

9999.9 ltr/gal

99999 litres or gallons

Mechanical Accum. totaliser capacities

M1 & M2 (6 digit),  M3 & M4 (8 digit)

Optional outputs

Flow

4 ~ 20mA, high & low flow rate alarms

Pulse

scaled pulse 

(programmable)

, pulse amplifier

* Maximum flow is to be reduced as viscosity increases, max. pressure drop 100Kpa (15psi)

± 0.5% of reading  

( ± 0.2% with optional RT12 )

typically ± 0.03%

3 wire open collector, 5~24Vdc max., 20mA max.

30Vdc x 200mA max. 

(max. temp. shock 10ºC (50ºF) / min)

* Maximum flow on fuels may be maintained for intermittent periods of refuelling.

IP66/67 (NEMA4X), optional Exd IIB T6 or I.S.

-20ºC ~ +120ºC  

( -4ºF ~ +250ºF )

bar 

( PSI )

Summary of Contents for OM025

Page 1: ...w flomec com au USA 916 Belcher Drive Pelham AL 35124 USA Tel 1 205 378 1050 Fax 1 205 685 3001 Email customerservice trimecus com Website www trimecus com Distributed by Each meter has been calibrated on mineral oil and will contain a small amount of oil residue The oil used is Castrol Diesel Calibration Fluid 4113 product code 055830 Medium capacity positive displacement flowmeters OVAL GEAR SEE...

Page 2: ...otalisers rate totalisers or batch controllers These instruments also have monitoring and control output options including 4 20mA scaled pulse flowrate alarms and batch control logic preset metering If your flowmeter is fitted or supplied with an instrument please also refer to the relevant instrument instruction manual These flowmeters can be installed within hazardous areas by using the reed swi...

Page 3: ...en collector phased outputs 4 dc 2 stage batch controller OM040 OM050 accum reset totals pulse output IECEX ATEX approved IECEX ATEX approved IECEX ATEX approved Specifications Model prefix OM015 OM025 OM040 OM050 Nominal size inches 15mm 1 2 25mm 1 40mm 11 2 50mm 2 Flowrange litres min 1 40 10 150 15 250 30 450 Flowrange USGM 0 26 10 6 2 6 40 4 66 8 120 Accuracy 3cp Repeatability Temperature rang...

Page 4: ...nd air entrapment which can result in erroneous readings or damage the meter on start up Process or safety critical meters should be installed in a by pass section of pipe with isolation valves to enable the meter to be isolated and serviced as required A by pass installation also allows purging of the system during commissioning see Commissioning The meter must be appropriately rated and is typic...

Page 5: ...stor typically greater than 10K ohms in most instruments which ties the open collector to the available dc voltage level when the Hall sensor is not energized When energized the open collector output is pulled to ground through the emitter 0V 2 3 2 Reed Switch Pulse Output The reed switch output is a two wire normally open SPST voltage free contact ideal for installations without power or for use ...

Page 6: ...ill have the relevant calibration factor entered into the program of the instrument Please refer to relevant instrument manual for programming details 10 Commissioning Maintenance 3 0 Commissioning Once the meter has been mechanically and electrically installed in accordance with this and any other relevant instrument manual s the meter is ready for commissioning The meter must NOT be run until th...

Page 7: ...embly with rotor shafts Part No aluminum 1401096 1401094 1401092 stainless steel 1401097 1401093 2 Rotor assembly set aluminum rotors bearings 1424071 1424111 1424099 stainless steel rotors bearings 1424092 1424125 1524011 3 Body O ring size BS153 size BS245 size BS253 viton standard 13031531 13032451 13032531 teflon 13031533 13032453 13032533 4 Meter cap aluminum with M20 conduit entry 1302047 13...

Page 8: ...tep 1 Check application installation and set up Refer to Mechanical Installation section for installation and application factors that may effect the meter operation including pulsation and air entrainment or incorrect meter selection including incorrect flow rate temperature and pressure or materials compatibility Refer to Electrical Installation for correct wiring Step 2 Check for blockages The ...

Page 9: ...rminations wires for continuity 1 Rotors fouled 1 Check that rounded teeth are towards base of chamber 2 Check for obstruction due to foreign particles 3 Clean repair or replace rotors 2 1 See instructions for reassembly of meter with particular emphisis on positioning of rotors magnets 3 1 Check terminal connections solder joints 2 Ensure dc voltage is available at Vdc 0v and receiving instrument...

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