All-ﬂuororesin, highly corrosion-resistant purgemeterfor measuring small ﬂow rates of liquids

P-771
Purgemeter■ OUTLINEThe P-771 is an all-fluororesin, ultra-clean purgemeter. All parts fromwetted parts to structural parts are made of non-metallic material. In
particular, the wetted parts and tapered tube are PFA integral mold,preventing the purgemeter from rusting even in the atmosphere. Tubeend connection is available.
The P-771 is ideal for the pure/ultra-pure water process and chemical
injection process in semiconductor production facilities.

■ MAJOR APPLICATIONS
Pu re/ultra - p u re wate r lin es a n d ch e mic al inje ctio n lin es in th e
semiconductor production process■ STANDARD SPECIFICATIONS
Measuring ﬂuidLiquids

Min. 3 to 15 mL/min
Max. 0.2 to 2 L/min・When selecting a range, refer to "Index＆Quick
Measuring range
Reference for P Series Purgemeters"（TGS0001）.
・When selecting a ﬂow range,refer to thestandard ﬂow rate table.
Range ability
10：1（10：2 for some models）
Indication accuracy±5％ F.S.
Fluid pressure
Max. 0.5MPa
Fluid temperature
Max. 60℃
Wetted part PFA
Tapered tube PFA
Material
GasketPTFE（For models with a valve）
Scale plate
PVC
Tube end：φ6.35×t1（Standard）、φ6×ｔ1、φ8×t1
Process Connection
Piller ﬁtting（Super 300 type）：φ6×t1 Tubeconnection、φ8×t1 Tube connection
Rc：1/8"
Mounting
Screw mount on the panel front
Massapprox. 0.2 kg
Water

The maximum operating temperature for each material may vary dependingon usage and ambient conditions.

■ BASIC MODEL CODE
Model CodeDescriptions
P-771 ̶ □ □ ̶ T W ̶ □ □̶ 0Not providedValve̶ UOutlet0Not provided
PAU alarm unit
Alarm output Eprovided
ZSpecial
Wetted parts
̶ TPFAmaterial
Gasket material■ ALARM CONTACT AND OUTPUT
TypeGeneral
UL-approved
PAU optical alarm unit

Reed switch type alarm unit

Availability××○

For CE approval, refer to "Index & Quick Reference for P Series
Purgemeters" (TG-S0001).

Process connection

WNo provided/
welded structure(Standard)
φ6.35×t1
A(Standard)
̶ T
B φ6×t1
C φ8×t1
φ6×t1 Tube
Bconnection
̶ P
φ8×t1 Tube
Cconnection
̶ R 1 Ｒｃ1/8Notes
Refer to "Index ＆Quick Referennce
for P series
Pergemeters"(TG-S0001).
Tapered tubes arealso made of PFA
PTFE with valve
Tube endconnection(Standard)
Piller ﬁtting (Super300 type)
Rc■ STANDARD FLOW RATE TABLE
Water
3 to 15 mL/min ＊2 to 20 mL/min ＊3 to 30 mL/min ＊5 to 50 mL/min
10 to 100 mL/min
20 to 200 mL/min
30 to 300 mL/min
50 to 500 mL/min
0.1 to 1L/min
0.2 to 2L/min■ OTHER AVAILABLE OPTIONS
You can specify the following options:Double graduations, special graduations, etc. For details, refer to "Index& Quick Reference for P Series Purgemeters" (TG-S0001).

Although other flow rate specifications are available, some flow ranges
need to be changed. Contact us for details.
＊ When the density and viscosity of liquid are different from 1.0 g/cm3

and 1.0 mPa·s respectively, the indication accuracy will be larger than
±8% F.S.

TG-F1095-1E
RevisedApr 2016 K
1st edition Jun 2014 K

P-771Purgemeter■ ORDERING INFORMATION
Basic model code

Items to be speciﬁed①②③④⑤
Fluid name − Flow range − Press. − Temp. − Mounting option

Ｐ-771- □□ - □□ - □□（Select in the model code table.）−⑥Other options（Refer to "Index & Quick Reference for P Series Purgemeters" (TG-S0001).）■ DIMENSIONS● Tube end typeP − 771 − U0 − TW − TA

● Rc typeP − 771 − 00 − TW − R1

■ Screw mounting on the panel front■ Valve at the outlet■ Screw mounting on the panel front■ Without a valve
Panel cut30(MAX.35）

(56)
(50)

26
623

Panel cut

2630

623

4×φ4.54×φ4.52×Rc1/880

80

11080

10280

110

102

2×φ182×φ182×φ6.35×t1.04×M4
Depth 54×M4
Depth 5● Piller ﬁtting (Super 300 type)P − 771 − U0 − TW − PB

● Piller ﬁtting (Super 300 type)P − 771 − 00 − TW − PC

■ Screw mounting on the panel front■ Valve at the outlet■ Screw mounting on the panel front■ Without a valve
Panel cutPanel cut266(35)(30)2330

4×φ4.5266(37)(31.5)

232×φ22

2 × Pillar ﬁtting（Super 300 type）
φ8 × t1 Tube connection

80110

80

80

4×M4
Depth 5102110

2×φ20

2 × Pillar ﬁtting（Super 300 type）φ6 × t1 Tube connection

4×φ4.5102(MAX.35）

8030

4×M4Depth 5● Standard material
Parts nameBody, tapered tube
Float
Float stopper
Valve body
Valve needle / gasket
Fitting
Scale plate

Standard material○ PFA integral mold
○ PTFE○ PFA○ PCTFE○ PCTFE / PTFE
○ PFA
Transparent PVC

Parts marked ○ come in contact with the measuring ﬂuid.

* Specification is subject to change without notice.

Head Office : Shiba Toho Building, 1 – 7 – 24 Shibakoen, Minato-ku, Tokyo 105 – 8558
Tel : +81-3 – 3431 – 1625 (KEY) ; Fax : +81-3 – 3433 – 4922
e-mail : overseas.sales@tokyokeiso.co.jp ; URL : http://www.tokyokeiso.co.jp
2TOKYO KEISO CO., LTD.

TG-F1095-1E