Gpi Gm005 User manual

MS345G

0603

0005

Positive Displacement Flowmeters

GM005 series instruction manual

GM005 Pulse Meter From serial No. CXXXX

PLEASE READ THIS INFORMATION

CAREFULLY BEFORE USE!

Before use, confirm the fluid to be used

is compatible with the meter. Refer to

industry fluid compatibility charts or

consult your local representative for

advice.

To prevent damage from dirt or foreign

matter it is recommended that a Y or

Basket type 60 mesh strainer be

installed as close as possible to the

inlet side of the meter. Contact your

local representative for advice.

Note: When a strainer is installed it

should be regularly inspected and

cleaned. Failure to keep the strainer

clean will dramatically effect flow

meter performance.

Note: To prevent damage caused by air

purge slowly fill the meter with fluid.

To reduce pressure build up turn off the

pump at the end of each day.

Maintenance can be carried out to the

liquid crystal displays and pulse units

without removing or isolating the meter

from the line. When maintenance to

any other part of the meter is required,

the meter must be isolated and the line

pressure reduced.

The reed switch pulse unit can cause

inaccurate rate counts when used with

high speed counters. It is advised that a

debounce circuit be used. Contact your

meter distributor for further

information.

When fluid passes through the meter

the rotors turn, as shown below. The

magnets which are located in the rotors

will pass across the pulser circuit board

(containing either Reed switches or

Hall Effect sensors). A signal is

generated which is then sent by the

Pulse Circuit Board (PCB) to the

relevant LC display or receiving

instrument.

Operating Principle

Please take a few minutes to read

through this manual before installing

and operating your meter. Always

retain this manual for future reference.

If you have any problems with the

meter, refer to the maintenance and

trouble shooting sections of this

manual.

This manual contains connection and

operating instructions for the GM005

Series meters with Pulse outputs. For

models with an Liquid Crystal Display

an additional instruction manual is

supplied. If you need further assistance,

contact your local representative or

distributor for advice.

This Flow Meter 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

accuracy over a wide range of fluid

viscosities and flow rates are features of

the oval rotor design. With low

pressure drop and high pressure rating

oval rotor flow meters are suitable for

both gravity and pump (in line)

applications.

Flow meters are available in either

Aluminium or 316 Stainless Steel.

Standard rotors are made from PPS

(Polyphenylene Sulfide Resins) with

optional 316 Stainless Steel rotors

available for both Stainless steel and

Aluminium models.

GM005 Series Meters are available

with either;

* Pulse output

* Standard LC Display and Pulse

To the owner

Important Information

1] it is recommended that when setting

up pipework for meter installations a

bypass line be included in the design.

This provides the facility for a meter

to be removed for maintenace

without interrupting production. (See

Fig.1)

2] Use thread sealant on all pipe

threads.

3] For pump applications ensure pipe

work has the appropriate working

pressure rating to match the pressure

output of the pump. See Meter

Specifications section for further

details.

4] Install a wire mesh strainer (Y or

basket 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

direction of the arrows embossed on

the meter body.

6] The meter can be installed in any

orientation as long as the meter shafts

are in a horizontal plane. (Refer to

Fig.2 for correct installation) The

to suit the individual installation.

Note: Incorrect installation can cause

premature wear of meter components.

7] Do not over tighten meter

connections.

8] It is important that after initial

installation you fill the line slowly,

high speed air purge could cause

damage to the rotors.

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 flow rate

decreases.

Installation

Bypass Line

Flow Outlet

Flow Inlet

Strainer

Do Not Install Meter This Way

Electrical Connections

Contact rating 15VA

Maximum Voltage 150VDC

Note: Double rate pulse output not available 34

Reed/Hall combination

1 - Reed Switch

2 - Reed Switch

3 - HE Common -

4 - HE Signal

5 - HE Supply +

Hall/Hall Combination

1 - HE1 Supply +

2 - HE1 Signal

3 - HE Common -

4 - HE2 Signal

5 - HE Ground

Hall Effect Voltage 4.5 to 24 VDC

Current Draw Minimum 4.6mA

Output NPN Open Collector 25mA

Reed Switch Connections Hall Effect or Reed/Hall Sensor Connections

Disassembly

Ensure that the fluid supply to the

meter is disconnected, and the line

pressure is released before

disassembly, with the exception for

repair or maintenance to the LC

Display or PCB where there is no

necessity to isolate the meter from flow.

Refer to the exploded parts diagram on

subsequent pages for item numbers.

1a] Pulse Caps models: Undo the

conduit connector, remove pulse

cap (item 9) and remove the wires

from the pulse terminal board (item 5).

1b] Standard LC Display: Mark the

display orientation with a marking

pen, unscrew the four large screws

(Item 26) on top of the LC Display.

Carefully separate the LC Display

from the plastic housing and

disconnect the wires from the

pulse terminal block. (Refer to

additional Standard LC Display

instruction manual).

2] Remove the mounting adaptor plate

and gasket (Item 14).

3] Loosen the cap head screws (Item 7)

that hold down the meter cap (Item

4), remove the screws, washers and

lift off the cap.

4] Remove the o’ring (Item 2) from the o’ring

groove in the meter cap (Item 4).

5] Remove rotors (Item 3).

Reassembly

1] Before reassembling check the

condition of the rotors (replace if

necessary).

2] Check that the smooth side of the

rotors (not the plug side) is facing

you when inserting the rotors, the

smooth side of the rotor is the

magnet side. There is no difference

between rotor one or rotor two.

3] Replace the rotors (Item 3) onto the

shafts at 90oto each other (refer Fig.

5) and check their 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 correctly at

90oto the other rotor. Re-check the

operation of the rotors.

4] Replace the o’ring (Item 2) into

groove in the meter cap, if the o’ring

has grown or is damaged in any way

replace it with a new part.

5] Replace the meter cap making sure

that the locating pin in the body

lines up with the hole in the meter

cap. Insert the cap head screws

(Item 7) and tighten in a diagonal

sequence 1, 3, 2, 4, etc.

6] The replacement of cables and

connectors are a reversal of the

disassembly procedure, replace

conduit fitting if required. When

replaceing the Standard LC Display,

confirm the orientation marks made

on disassembly are aligned then

screw the register into place.

7] Test the meter by turning the rotors

with a finger or by applying very low

air pressure (no more than a good

breath) to one end of the meter,

before returning the meter to the line.

Pulse Circuit Board (PCB) Notes:

The pulse PCB (Item 5) is fitted with (A)

two reed switches; (B) hall effect

sensors; or (C) one reed switch and one

hall effect sensor. The PCB board is

fastened to the meter cap (Item 4) by

two screws and stand off’s. All care and

caution should be taken when

removing or handling the PCB as both

the reed switch and hall effect sensor

are fragile.

Reed switch or hall effect sensors are

not available as individual replacement

parts and are only available with the

complete PCB (Item 5).

Service Instructions

Rotors must be at 90oto each other.

Rotor #2

Rotor #1

Meter Parts Listing

1 1 MS298B Meter Body 1/2” BSP (Aluminium)

1 1 MS298N Meter Body 1/2” NPT (Aluminium)

1 1 MS337B Meter Body 1/2” BSP (Stainless Steel)

1 1 MS337N Meter Body 1/2” NPT (Stainless Steel)

21uBS145S “O” Ring (NBR)

21uBS145TES “O” Ring (Teflon)

21uBS145VS “O” Ring (Viton)

32uMS342S Rotors PPS (Polyphenylene Sulfide Resins)

uuMS342-1S Rotors (Stainless Steel)

32uMS342HS High Viscosity Rotors (PPS)

32uMS342-1HS High Viscosity Rotors (Stainless Steel)

4 1 MS297 Meter Cap (Aluminium)

4 1 MS338 Meter Cap (Stainless Steel)

51uMS344-RS PCB (Standard Reed Switch)

51uMS344-HES PCB (Hall Effect Sensor)

5 1 MS344-R/HES PCB ( 1 Reed Switch & 1 Hall Effect Sensor)

6 2 MS284S PCB Board Screws

74uMS346S Meter Cap Screws (Standard)

74uMS350S Meter Cap Screws (Stainless Steel)

81uMS340S Pulser Cap Gasket

9 1 MS296 Pulser Cap (Aluminium) 20mm Conduit Thread

9 1 MS296N Pulser Cap (Aluminum) 1/2” NPT Thread

9 1 MS339 Pulser Cap (Stainless Steel) 20mm Conduit Thread

9 1 MS339N Pulser Cap (Stainless Steel) 1/2” NPT Thread

10 2 MS347S Pulser Cap Screw (Stainless Steel)

11 1 MS37 Warning Label (Not Shown)

13 1 Customer to Specify Legend Plate (Not Shown) inc. Hammer Screws

Item

No.

Off.

Part or Set

(Order from this column only) Part Description

Key:

uIndicates recommended Spare Parts to stock

Bold text indicates Stainless Steel Model Parts

Rec.

Parts

Pulse

1 to 30/ 0.26 to 8

3 to 25/ 0.8 to 6.60

+/- 0.5%

1000 Centipoise

5500kPa/ 800 PSI/ 55 BAR

80°C/ 176°F

(S.S. Models 120°C/ 248°F)

Dual Reed Switches or Hall

Effect Sensor or combination

HE Sensor/Reed Switch**

112 / 224

* Unless High Viscosity Rotors are fitted.

Meter Specifications

Meter Type

Flow Ranges

Litres/minute - US Gall/min

Above 5 Centipoise

Below 5 Centipoise

Accuracy of Reading

Maximum Viscosity*

Max. Operating Pressure

Max. Operating Temp.

Pulse Type

Pulses Per Litre/US Gallon

Meter Trouble Shooting

TROUBLE

Fluid will not flow through meter

Reduced flow through the meter

Meter reading inaccurate

Meter not giving a pulse signal

CAUSE

a] Foreign matter blocking rotors

b] Line strainer blocked

c] Damaged rotors

d] Meter connections over tightened

e] Fluid is too viscous

a] Strainer is partially blocked

b] Fluid is too viscous

a] Fluid flow rate is too high or too low

b] Fluid is too viscous

c] Excess wear caused by incorrect

installation

a] Faulty hall effect sensor

b] Faulty reed switch

c] Magnets failed

REMEDY

a] Dismantle meter, clean rotors

(Strainer must be fitted in line)

b] Clean strainer

c] Replace rotors (Strainer must be

fitted in line)

d] Re-adjust connections

e] See specifications for maximum

viscosity

a] Clean strainer

b] See specifications for maximum

viscosity

a] See specifications for minimum and

maximum flow rates

b] Bleed air from system

c] Check meter body and rotors.

Replace as required. Refer to

installation instructions

a] Replace PCB Board

b] Replace PCB Board

c] Replace magnets

Warranty

Meter Dimensions

96mm

70mm

100mm

105mm

18mm 20mm

Pulse Meter Dimensions

Great Plains Industries, Inc. Limited Warranty Policy

Great Plains Industries, Inc., 5252 East 36th Street North, Wichita, Kansas USA 67220-3205, hereby provides a limited one year warranty against defects in material and

workmanship on all products manufactured by Great Plains Industries, Inc. This warranty shall extend to the purchaser of this product and to any person to whom such

product is transferred during the warranty period.

The warranty period shall begin on the date of the original new equipment purchase. Warrantor’s obligation hereunder shall be limited to repairing defective workmanship or

replacing or repairing any defective part or parts. This warranty shall not apply if:

a.)The product has been altered or modified outside the warrantor’s duly appointed representative;

b.)The product has been subjected to neglect, misuse, abuse or damage or has been installed or operated other than in accordance with the manufacturer’s operating

instructions.

To make a claim against this warranty, notice of claim must be given in writing to the company at its address below no later than 30 days after the expiration of the warranty

period. Such notice shall identify the defect in the product. The company shall, within 14 days of receipt of such notice, notify the customer to either send the product,

transportation prepaid, to the company at its office in Wichita, Kansas, or to a duly authorized service center. The company shall perform all obligations imposed on it by the