TG-F2557-E00

CFW2000 Series PORTABLE AND DETACHABLE

TOKYO KEISO CO., LTD.

5

SUGGESTIONS

❏

Install the fixing nozzles on the main pipes in advance. Measure

the flow rate by fixing the indicator on them when required. One

indicator can measure the flow rates of maximum 4 different

sizes of the standard pipe. However it measures one flow rate of

one size of non-standard pipe.

Following table shows the indicator commonly used for the

combination of measuring pipes.

Kinds of measuring pipes

Can an

indicator be

used

commonly?

A combination of three-way sockets 20 to 32mm

(JIS B2301) and 40 to 450 mm SGP pipes (JIS

G3452)*6

Yes

For 4 different

sizes of pipes

A combination of three-way sockets 20 to 32mm

(for Sch.40 pipes) and 40 to 450 mm STPG pipes

(JIS G3454 Sch 40)*7

Yes

For 4 different

sizes of pipes

・A mixed combination of above *6 and*7

・Three-way sockets with 40 mm or larger

・Non-standard pipes in inside diameters

・Resin pipes

・Lining pipes in general

No

An indicator

per

one pipe size

❏

The model CFIW2 □ 2 □ - □□□□ -10 flowmeter is calibrated

based on the inside diameter of JIS G3452 SGP. The model

CFIW2 □ 2 □ - □ □ □ □ -20 flowmeter is calibrated on JIS

G3454 STPG Sch.40. If pipes are different from above, consult

TOKYO KEISO. Specific calibration is required.

❏

Run the fluid fully in the pipe. Otherwise it could not be

measured.

Socket 3/4

Straight pipe 40 to 450 mm

Branch 3/4

Three-way socket 20 to 32 mm

One indicator can measure the flow rates of

maximum 4 different sizes

Cover cap

Cover cap

HOT AND COLD INSULATION

❏

When the fixing nozzle is insulated up to the end of the cap nut

as shown in the drawing below, the fixing nozzle may get a dew

condensation due to the fluid temperature. To prevent a dew

condensation the dew prevention cover can be provided on

request. See page 3. The distance between the end of cap nut

and the central end of the cover cap is 53 mm. Do not insulate

this part. If this part is insulated, the dew prevention cover

cannot be put on.

Insulation

Dew prevention

cover

End of cap nut

53

Central end of cover cap

After putting on the cover

Put on the dew prevention cover

by pushing forward.

HOW TO MEASURE

1) Open the cap of the CFNW fixing nozzle.

2) Insert the CFIW indicator into the CFNW nozzle, and fix the

CFIW indicator by tightening up the cap nut. At this time, be

careful that the tapered tube of CFIW indicator must be

vertical. Confirm that the scale range corresponds to the size of

the main pipe.

3) Move a valve handle to“Open”when installation is completed.

Liquids run through indicator and it starts to measure the flow

rate.

4) Conduct this in reverse procedure to finish measurement

HOW TO STORE AFTER MEASURING

The CFIW indicator has been delivered with the carrying case as

shown below. Store the indicator in it after measuring the flow rate.

An air elimination plug, a wrench used for opening and closing

caps on the top and bottom of indicator, a brush for cleaning

the tapered tube are contained in the case. Use them for the

maintenance.

Wrench for

indicator

Brush for

indicator

Carrying case