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            Maintenance      11 

 

4.1     Disassembly of Pulse meter 

(Refer Exploded View)

   

If required to gain access to the meter terminals and 

pulse output board, undo the 4 cap screws (10), remove the terminal cover (9) carefully to avoid putting strain on 
the terminal connections. The pulse output board (6) can now be accessed and removed if necessary (screws 7).

 

If required to gain access to the oval geared rotors undo the 8 body screws (5), carefully pry the meter body apart 
avoiding misplacing or damaging the O-ring (3) and rotors (2).  
 
 
  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
4.2     Dissassembly of meters fitted with an Instrument   

If the meter is fitted with an integral instrument the 

instrument display assembly must be removed if required to gain access to the instrument terminal connections, 
instrument battery or pulse output board. This is achieved by undoing the bezel screws and separating the display 
assembly from its base. Do not stress or damage the wires that connect the display assembly to the meter output. 
Take care not to misplace or damage O-ring(s).The pulse output board can now be accessed. To remove the pulse 
output board, first undo the screws that fix the instrument base to the flowmeter.  
 
 
 
 
 

 12       Maintenance  
 
 
  

4.3      SPARE PARTS   

(refer to exploded view)

Item   Description

OM025

OM040

OM050

1

Body assembly with rotor shafts

Part No.

 aluminum

1401096

1401094

1401092

 stainless steel

1401097

1401093

2

Rotor assembly set

 aluminum  bearings

1424071

1424111

1424099

 stainless steel  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

1302160

1302088

 aluminum with 1/2" NP T conduit entry

1302164

1302161

1302167

 stainless with M20 conduit entry

1302165

1302166

1306025

 stainless with 1/2" NP T conduit entry

1302059

1302162

1306029

5

Cap screw  

(M6 x 20)

(M10 x 25)

(M10 x 25)

 stainless & aluminum bodies

130816103 130810104 130810104

6

Pulse output board 

 standard pulse board

1412033

1412055

1412034

 quadrature pulse board

1412039

1412040

1412040

7

Output board screw 

 M3 x 4 slot head

130803101

8

Terminal cover O-ring 

 suit std. stainless cover 

(BS132)

13031321

 suit E xd aluminum cover 

(BS032)

13030321

9

Terminal cover 

 IP66/67 standard cover 

(SS)

1306030

 E xd explosionproof cover 

(alum.)

1306020-E X

10 Terminal cover screw  

 M5 x 16

130805101

11 Flange portion O-ring

(size BS123)

(size BS136)

(size BS140)

 viton

13031231

13031361

13031401

 teflon

13031233

13031363

13031403

12 Flange portion screw

(M8 x 25)

(M10 x 30)

(M10 x 30)

 socket head

130808103 130810104 130810105

13 Flange portion

refer diagram opposite

 Recommended spare parts :

 Item 2 rotor assembly set

 Item 3 body O-ring

 Item 6 pulse output board

Содержание OM025

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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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