Compact, low-cost purgemeter with metal body formeasuring gases and liquids

P-850
Purgemeter■ OUTLINEThe P-850 is a compact purgemeter with a face-to-face dimension of 80mm (height: 100 mm). The P-850 is ideal for built-in services for various
equipment and devices.

■ MAJOR APPLICATIONSGeneral purpose■ STANDARD SPECIFICATIONS
Gases
Liquid (Equivalent to water : Density 1.0ｇ/ｃｍ 3,Viscosity 1.0mPa・s)
Min. 20 to 200 mL/min（nor）
Air
Max. 2 to 20 L/min（nor）
・0MPa (1atm), 20 ℃
Measuring range（Standard）
Min. 5 to 50 mL/min
Water
Max. 0.1 to 1 L/min
・1.0 g/cm3, 1.0 mPa・s
Min. 20 to 200 mL/min（nor）
Air
Max. 2 to 20 L/min（nor）
Min. 5 to 50 mL/min
Water
Measuring range
Max. 0.1 to 1 L/min（optional）
・When selecting a ﬂow range, refer to "Index & Quick
Reference for P Series Purgemeters" (TG-S0001).
・When selecting a ﬂow range,refer to the standard ﬂow
rate table.
Range ability
10：1
Indication accuracy±5％ F.S.
Fluid pressure
Max. 0.5 MPa
Fluid temperature
Max. 60℃
Wetted part
SCS14
Tapered tube
Heat-resistant glassFloat
SUS316, Glass, Ruby
Nitrile rubber（NBR）
Material Gasket
Fluoro rubber
Chloroprene rubber（CR）
Valve
ＳＵＳ304, SUS316
Mounting plate SPCC, SUS304
CoverPolycarbonate
Standard cleaning
Degrease treatment (Ultrasonic cleaning)
Mounting
Rc1/8
Massapprox. 0.2ｋｇ
Measuring ﬂuid

■ BASIC MODEL CODE
Model CodeP-850 ̶ □□ ̶ □ ̶ □ □ ̶ □ 1

Flowrange

GeneralUL-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).

■ STANDARD FLOW RATE TABLE
As standard, measuring ranges corresponding to respective flow rates
are speciﬁed by codes. See BASIC MODEL CODE.

Notes

5 to 50 mL/min̶

L1

10 to 100 mL/min̶

L2

30 to 300 mL/min̶

L3

50 to 500 mL/min̶

L4

60 to 600 mL/min̶L5

0.1 to 1̶G0

20 to 200 mL/min (nor)̶G1

0.1 to 1

L/min (nor)̶G2

0.3 to 3

L/min (nor)̶G3

0.6 to 6

̶

G41

̶

G5

1.5 to 15

Fluid : AirL/min (nor) Pressure : 0MPa（1atm）
L/min (nor)Temperature : 20℃
L/min (nor)̶G62L/min (nor)̶00

Optional

Valve

to 10to 20

̶ 0

Not provided

̶ L

Inlet

Refer to "Index &Quick Reference for
P Series Purgemeters"(TG-S0001).

̶ 4

Body : SCS14 /Valve : SUS304（Standard）

̶ 6

Body : SCS14 /Valve : SUS316

Wetted parts material

Gasket material

Process connection type
Process connection size

Fluid : water or
equivalentDensity : 1.0g/cm3
Viscosity : 1.0mPa・s

L/min

Outlet̶ U■ ALARM CONTACT AND OUTPUT
Type

DescriptionsL0̶

N

Nitrile rubber（NBR）（Standard）

FFluoro rubber

C

Chloroprene rubber (CR)ZSpecial
̶ RRc（Standard）

̶ N

NPT female
1 1/8"

When ordering a model with a valve, specify inlet and outlet pressures.
Otherwise, the valve is designed for a diﬀerential pressure of 0.05 MPa.
Depending on the speciﬁcation, the desired model may be unavailable.
Standard models with the code of L □ or G □ have a valve designed fora diﬀerential pressure of 0.05 MPa.

● Optional measuring range
When the ﬂuid pressure is other than 0 MPa, refer to "Index & Quick
Reference for P Series Purgemeters" (TG-S0001).
Air (0ºC, 0 MPa)

Water (1.0 g/cm3, 1.0 mPa·s)

20 to 200 mL/min（nor）

5 to 50

50 to 500 mL/min（nor）
0.1 to 1L/min（nor）
0.5 to 5L/min（nor）
1 to 10L/min（nor）
2 to 20L/min（nor）

10 to 100 mL/min
20 to 200 mL/min
30 to 300 mL/min
50 to 500 mL/min
0.1 to 1 L/min

mL/minAlthough other flow rate specifications are available, some flow ranges
need to be changed. Contact us for details.

TG-F1102-2ERevised
Aug 2015 K
1st edition Jul 2014 K

P-850Purgemeter■ OPTIONAL MOUNTING METHOD■ OTHER AVAILABLE OPTIONS

The following mounting methods can be selected.

You can specify various ﬁtting types.
For details, refer to "Index & Quick Reference for P Series
Purgemeters" (TG-S0001).

CodeA
BC

Mounting method
Lock nut mounting on the panel front
Screw mounting on the panel front
Panel rear mounting

Add a code to the end of BASIC MODEL CODE.
For example: P-850-L1-0-4N-R1-C for rear panel mounting.

■ DIMENSIONS
P − 850 −□□− 0 −□□− R1

P − 850 −□□− L −□□− R1 − B■ Supported by piping■ Without a valve■ Screw mounting on the panel front■ Valve at the inlet（10.5）
Rc1/8
OUT6∅14×M34×∅3.580

1480（100）80（100）

Rc1/8
OUT

46（22）

6∅117（23）

Rc1/8
IN

Rc1/8IN（23）（MAX.23）（22）（10.5）

Panel cut

Note: Long mounting screws may damage the tapered tube. The screws
should be shorter than the thickness of the panel + 3 mm.

P − 850 −□□− U −□□− R1 − A

P − 850 −□□− U −□□− R1 − C■ Lock nut mounting on the panel front■ Valve at the outlet■ Rear panel mounting■ Valve at the outlet（MAX.23）（22）（10.5）
Rc1/8
OUT

（23）

156（MAX.23）
（22）

4-M3
Depth 67.5（23）∅1（10.5）
Rc1/8
OUT6

∅1
Rc1/8
IN
Panel thickness:Max. 5 mm

Rc1/8
IN

4×∅3.5

Panel cut

80

19.5

16（100）56958080（100）∅15Panel cut

* 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-F1102-2E