OUTLINE

The P-620 is a compact, acryl-mold type purgemeter for measuring

liquids of up to 10 L/min. The P-620 is widely used as a flow switch and

features easy in-line maintenance. It does not need removing from the

instrument panel.

MAJOR APPLICATIONS

Cooling water lines for semiconductor production equipment

STANDARD SPECIFICATIONS

Measuring fluid

Liquid (Water-equivalent: Dens. 1.0 g/cm³, Visc.

1.0 mPa·s)

Measuring range

Water

Min. 0.2 to 2 L/min (0.4 to 1.2 L/min

with alarm output)

Max. 1 to 10 L/min

・When selecting a flow range,refer to the

standard flow rate table.

Range ability

Standard (10 : 1)

Indication accuracy

±10％ F.S.

Fluid pressure

Max. 1 MPa

Fluid temperature

Max. 60℃

Material

Wetted parts Acryl

Tapered tube Acryl

Gasket

Nitrile rubber（NBR）

Chloroprene rubber (CR)

Fluoro rubber

Fitting

C3604, SUS304, SUS316

Process Connection

Rc

: 3/8"（Standard）

NPT : 3/8"

SW : 3/8"

Mounting

Screw mount on the panel front（Standard）

Mass

approx. 0.3 kg

ALARM CONTACT AND OUTPUT

Type

Availability

Reed switch type alarm unit

General

○

UL-approved

○

PAU optical alarm unit

×

For CE approval, refer to "Index & Quick Reference for P Series

Purgemeters" (TG-S0001).

STANDARD FLOW RATE TABLE

For alarm output code of 0

For alarm output codes of A to D

Water

Water

Alarm setting

range

0.4 to 1.2 L/min 0.5 to 1 L/min

0.2 to 2 L/min

0.2 to 2 L/min

0.4 to 1.6 L/min

0.3 to 3 L/min

0.3 to 3 L/min

1 to 2.4 L/min*1

0.5 to 5 L/min

0.5 to 5 L/min

2 to 4 L/min

0.6 to 6 L/min

0.6 to 6 L/min

2 to 4.8 L/min

0.8 to 8 L/min

0.8 to 8 L/min

2 to 6.4 L/min

1 to 10 L/min

  1 to 10L/min

2 to 8 L/min

*1 Min. 0.75 L/min for the SW connection

BASIC MODEL CODE

Model Code

Descriptions

Notes

P-620 – □ □ – □ □ – □ □

Valve

– 0

Not provided

– U

Outlet

– Z

Special

Alarm output

0

Not provided

Refer to "Index

& Quick

Reference for

P Series

Purgemeters"

(TG-S0001).

A

Reed switch (LO)

B

Reed switch (LC)

C

Reed switch (HO)

D

Reed switch (HC)

Z

Special

Wetted parts

material

– B

C3604（Standard）

– 4

SUS304

– 6

SUS316

– Z

Special

Gasket material

N

Nitrile rubber

（NBR）

（Standard）

C

Chloroprene

rubber（CR）

F

Fluoro rubber

Z

Special

Process connection type

– R

Rc（Standard）

– N

NPT female

– S

SW

– Z

Special

Process connection size

3 3/8"（Standard）

Z Special

OTHER AVAILABLE OPTIONS

You can specify the following options:

Alarm setting on the front face, length of reed switch lead wire, double

graduations, special graduations, built-in rubber joint type, built-in joint

type, etc.

(For details, refer to "Index & Quick Reference for P Series Purgemeters"

(TG-S0001)).

Compact, acryl-mold type purgemeter for measuring

liquids

P-620

Purgemeter

TG-F2705-E00

1st edition Apr 2026 K