Precision Power PC400.4 Spécifications télécharger pdf (Page 5)

SAFETY INSTRUCTIONS

Make sure that all necessary safety precautions have been

taken, including proper clothing, personal safety equipment

and fire safety equipment if required.

Before Start-Up of the Flow Meter, make certain that:

1. The meter is properly mounted, secured and piped.

2. All connections are tight.

3. All bleed and drain valves are closed.

4. Do NOT smoke near meter, or use meter near an open

flame, when metering flammable liquids. Fire or Explo-

sion could result.

5. This meter is not intended for use on liquids, which re-

quire 3A Sanitary equipment for human consumption. It

may be used on edible liquids, which do not spoil easily,

such as vegetable oils, liquid sweeteners & similar.

Install the Flow Meter and Accessories in compli-

ance with all applicable Local, State & Federal

Construction, Electrical and Safety Codes.

 Flush the system to remove all debris, scale and welding

slag prior to flow meter installation. If this is not possi-

ble, temporarily remove rotors (oval gears), and reinstall

after the system has been flushed.

 Apply pipe compound to male threads. Do NOT use Tef-

lon tape.

 Avoid pipe stress when installing the flow meter.

 When installing the flow meter, consider future mainte-

nance of both flow meter and accessories. The meter

can be serviced in place, provided block (isolation) valves

are included, and adequate space allowed.

 In critical installations a by-pass line is recommended,

so flow can continue while flow meter is being serviced.

 Thermal relief valves are recommended, and should be

installed whenever it is possible to block (isolate) the flow

meter between two valves. The pressure rise in a closed

system, from just a few degrees increase in temperature,

can be many times normal working pressure.

 Connections for calibration should be provided during

installation. An easy means for diverting flow into a cali-

bration vessel (or through a Master Meter) should be con-

sidered.

1 . 5

Installation

 Positive Displacement meters are designed to operate full

of liquid. The meter should be installed in a manner, so

that it remains full of liquid at all times.

The flow meter is not designed to operate on air, but the

design and materials of construction allow for operation

on vapor for short periods of time without damage to the

oval gears or flow meter internals.

 Hydraulic shock can be harmful to flow meter and other

system components. Consideration to eliminate hydraulic

shock should be given in selection of pump and design of

the piping system.

 The flow meter can operate with liquid going Left-to-Right,

Right-to-Left or Vertical Up, but it must be installed with

rotor shafts in horizontal position (= with vertical end

covers). Failure to observe this will impact negatively on

flow meter accuracy.

 Protective caps installed in flow meter flanges prior to

shipment should remain in place until you are ready to

install in the piping system.

 It is recommended that a Strainer be installed upstream

of each flow meter, to prevent damage from foreign mat-

ter, such as welding slag, pipe scale or parts breaking off

other equipment.

 Allow adequate space for removal of strainer basket

cover, so strainer basket can be cleaned.

OPERATING TEMPERATURE

TM Series meters are rated for operation from

-40°F/+300°F (-40°C/+150°C). However:



They are not suitable for cryogenic service.

 When temperature exceeds +120°F (+50°C), ‘K’ ro-

tors must be used, and pressure rating is reduced.

Refer to FPP Technical Manual for details.

OPERATING PRESSURE

TM Series meters Maximum non-shock Operating

Pressure is (see position 11 in the P/No.):

Code F 400 PSI (= 10.3 BAR) at 100°F

Code K 1500 PSI (= 103 BAR) (+38°C).

Code L 2500 PSI (= 175 BAR)

The flow meter should never be operated in excess of

this pressure. Care should be taken to eliminate ther-

mal and hydraulic shock conditions, so that system

pressure never exceeds the flow meter’s Maximum

Working Pressure rating.

BYPASS

OPERATING

METER

TEMPORARY MASTER METER

THERMAL

RELIEF

TM Series, Start-Up & Operation

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Precision Power PC400.4 Spécifications Page 5

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