Metal-body purgemeter for measuring large flow rates
of liquids and gases

P-510
Purgemeter
OUTLINE
The P-510 is a purgemeter for large flow rates with the same face-to-facedimension as the P-200 for small flow rates.

MAJOR APPLICATIONSGeneral purpose (large flow rate)

STANDARD SPECIFICATIONS
Gases
Liquids
Min. 2.5 to 25 L/min (nor)Max. 60 to 600 L/min (nor)Air at 0°C, 0 MPa (1atm)
Min. 0.1 to 1 L/min
Max. 3 to 30 L/min
Water with a density of 1.0 g/cm3 and viscosity of
1.0 mPa • s• 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.
10:1

Measuring range

Range ability
Indication
accuracy
Fluid pressure
Fluid temperature
Wettedpart
Taperedtube

Material

Gasket

Water

Air

Measuring fluid±5% F.S.
Max. 0.8MPa
Max. 120°C (Depends on the gasket material)
SCS14/SUS304 (Standard), SCS14/SUS316
Heat-resistant glass
Nitrile rubber (NBR) (Max. 80°C)
Chloroprene rubber (CR) (Max. 80°C)
Fluoro rubber (Max. 120°C)Ethylene-propylene rubber (EPDM) (Max. 80°C)• The maximum fluid temperature for each gasket
material may vary depending on usage and ambientconditions.

Mounting
SPCC, C2801P, SUS304
plate
CoverAcryl
Rc: 3/8" (Standard), 1/4", 1/2", 3/4", 1"
NPT : 1/4", 3/8", 1/2", 3/4", 1"
Process
SW : 3/8"
Connection
VCR : 3/8", 1/2", 3/4"
Flange: 10A, 15A (1/2), 20A (3/4), 25A (1)Screw (M3) mount on panel front (Standard)
Lock nut mount on panel front
Bezel mounting
Mounting
Panel embedded mounting
Flange connection
With standMassapprox. 1.6 kg

ALARM CONTACT AND OUTPUT
TypeGeneral
Reed switch type alarm unit
UL-approved
PAU optical alarm unit

Availability○○○

STANDARD FLOW RATE TABLE
When the fluid pressure is other than 0 MPa, refer to "Index & Quick Reference
for P Series Purgemeters" (TG-S0001).
For Alarm output codes of 0 or E
Pressure loss
Air (0MPa,0℃ )Water(kPa) ☆ 1
2.5 to 25 L/min (nor)3 or less
3 to 30 L/min(nor)3 or less
0.1 to 1 L/min
5 to 50 L/min (nor)5 or less
0.2 to 2 L/min
10 to 100 L/min (nor)16 or less
0.3 to 3 L/min
20 to 200 L/min (nor)15 or less
0.5 to 5 L/min
30 to 300 L/min (nor)16 or less
1 to 10 L/min
40 to 400 L/min (nor)25 or less
1.5 to 15 L/min
50 to 500 L/min (nor)
40 or less
2 to 20 L/min
60 to 600 L/min (nor)
60 or less
3 to 30 L/min ☆ 3

Air (0MPa,0℃ )5 to 50
L/min (nor) ☆ 2
10 to 100
L/min (nor)
20 to 200
L/min (nor)
30 to 300
L/min (nor)
40 to 400
L/min (nor)
50 to 500
L/min (nor)
60 to 600
L/min (nor)For Alarm output codes of A to D
Pressure
Alarm setting
loss (kPa)
Waterrange☆13 or less5 or less15 or less16 or less25 or less40 or less60 or less

10 to 40
L/min (nor)
20 to 80
L/min (nor)
40 to 160
L/min (nor)
60 to 240
L/min (nor)80 to 320
L/min (nor)
100 to 400
L/min (nor)
120 to 480
L/min (nor)

0.2 to 2
L/min ☆ 2
0.3 to 3
L/min
0.5 to 5
L/min
1 to 10L/min
1.5 to 15
L/min
2 to 20L/min
3 to 30
L/min ☆ 3

Alarmsetting
range
0.4 to 1.6L/min
0.6 to 2.4L/min
1 to 4L/min
2 to 8L/min
3 to 12L/min
4 to 16L/min
6 to 24
L/minAlthough other flow rate specifications are available, some flow ranges
need to be changed.
Contact us for details.
Low pressure loss type of production and I are available. Contact us fordetails.
Pressure loss of liquid, please contact.
☆ 1：It becomes the pressure loss during the valve fully open
☆ 2：float material is the PVC☆ 3：It will be manufactured only viscosity 1.0 mPa・s

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

TG-F2498-E00
1st edition Jun 2024 K

P-510 PurgemeterBASIC MODEL CODE
P-51
Flow direction

Valve

Model CodeDescriptionsNotes□ – □ □ – □ □ – □ □0
Bottom rear → Top rear (Standard)
Select this code for normal conditions.
9Special– 0
Not provided– L
Inlet (gas for atmospheric pressure scale)
Refer to "Index & Quick Reference forOutlet (gas for pressure scale or for
P Series Purgemeters" (TG-S0001).
– U
negative pressure on the secondary side)– ZSpecial0Not provided
Refer to "Index & Quick Reference forA
Reed switch (LO)P Series Purgemeters" (TG-S0001).
B
Reed switch (LC)

Alarm output

Wetted parts material

Gasket material

CDE
Z– 4– 6– Z
NCFE
Z– R– L

Process connection– N– M– S– V

Reed switch (HO)Reed switch (HC)PAU alarm unit provided
SpecialSCS14/SUS304 (Standard)
SCS14/SUS316
SpecialNitrile rubber (NBR) (Standard)
Chloroprene rubber (CR)
Fluoro rubber
Ethylene-propylene rubber (EPDM)
Special2 Rc 1/4" (With R 3/8" × Rc 1/4" adapter)3 Rc 3/8" (Standard)
4 Rc 1/2" (With R 3/8" × Rc 1/2" adapter)5 Rc 3/4" (With R 3/8" × Rc 3/4" adapter)6 Rc 1" (With R 3/8" × Rc 1" adapter)
Z Special (With R 3/8" × □" adapter)2 Rc 1/4" (With R 3/8" × Rc 1/4" adapter)3 Rc 3/8"
4 Rc 1/2"
5 Rc 3/4"
6 Rc 1" (With R 3/8" × Rc 1" adapter)
Z Special (With R 3/8" × □" adapter)
NPT 1/4" (F) (With R 3/8" × NPT 1/4" (F)2adapter)
3 NPT 3/8" (F)NPT 1/2" (F) (With R 3/8" × NPT 1/2" (F)4adapter)
NPT 3/4" (F) (With R 3/8" × NPT 3/4" (F)5adapter)
NPT 1" (F) (With R 3/8" × NPT 1" (F)6adapter)
NPT 1/4" (F) (With R 3/8" × NPT 1/4" (F)2adapter)
3 NPT 3/8" (F)4 NPT 1/2" (F)5 NPT 3/4" (F)NPT 1" (F) (With R 3/8" × NPT 1" (F)6adapter)
3 3/8"SW
3 3/8"VCR (Male connector)
4 1/2"VCR (Male connector)
5 3/4"VCR (Male connector)

Connection standard, rating & flange faceConnection size

– Z Z Special
JR
JIS 10K RF
JF
JIS 10K FF
AR
ASME Class 150 RF
AF
ASME Class 150 FF–PR
JPI Class 150 RFPF
JPI Class 150 FF
ZRSpecial (RF)ZF
Special (FF)
3 10A
4 15A (1/2)
5 20A (3/4)
6 25A (1)Specify two alarm output codes for two-point
alarm.
Example: P – 51□ – □ BD – □□ – □□Select this code for ammonia gas.

Rubber material only
Screw (M3) mount on panel front or piping
installation
For "RZ," specify connection standard & size
separately.

Lock nut mounting on panel front
For "LZ," specify connection standard & size
separately.

Screw (M3) mount on panel front or piping
installation

Lock nut mounting on panel front

Screw (M3) mount on panel front or piping
installation
Specify connection standard & size separately.

For "ZR" or "ZF," specify connection standard& rating separately.

OTHER AVAILABLE OPTIONS
You can specify the following options:Two-point alarm, alarm setting on the front face, length of reed switch lead wire, double graduations, special graduations, rubber joint type, other jointtypes, etc. For details, refer to "Index & Quick Reference for P Series Purgemeters" (TG-S0001).

2TOKYO KEISO CO., LTD.

TG-F2498-E00

P-510 Purgemeter

P-51
Flow direction
Valve

Model CodeDescriptionsNotes
1 – □ □ – □ □ – □ □1
Bottom → Top– 0
Not provided
A valve will be installed extemally.
– L
Inlet (gas for atmospheric pressure scale)
Refer to "Index & Quick Reference for P Series
Outlet (gas for pressure scale or for
Purgemeters" (TG-S0001).
– U
negative pressure on the secondary side)
0Not provided
Refer to "Index & Quick Reference for P Series
A
Reed switch (LO)
Purgemeters" (TG-S0001).
B
Reed switch (LC)

Alarm output

Wetted parts material

Gasket material

Process connection

Connection standard, rating & flange faceConnection size

CDEZ– 4– 6– Z
N
CFE
Z

Reed switch (HO)Reed switch (HC)PAU alarm unit provided
SpecialSCS14/SUS304 (Standard)
SCS14/SUS316
SpecialNitrile rubber (NBR) (Standard)
Chloroprene rubber (CR)
Fluoro rubber
Ethylene-propylene rubber (EPDM)
Special2 Rc 1/4" (With R 3/8" × Rc 1/4" adapter)3 Rc 3/8" (Standard)4 Rc 1/2"
– R
5 Rc 3/4"
6 Rc 1"Z Special (With R 3/8" × □" adapter)
NPT 1/4" (F) (With R 3/8" × NPT 1/4" (F)2adapter)
3 NPT 3/8" (F)– N
4 NPT 1/2" (F)5 NPT 3/4" (F)6 NPT 1" (F)– Z Z Special
JR
JIS 10K RF
JF
JIS 10K FF
AR
ASME Class 150 RF
AF
ASME Class 150 FF–PR
JPI Class 150 RFPF
JPI Class 150 FF
ZRSpecial (RF)ZF
Special (FF)
3 10A
4 15A (1/2)
5 20A (3/4)
6 25A (1)Specify two alarm output codes for two-pointalarm.
Example: P – 51□ – □ BD – □□ – □□Select this code for ammonia gas.

Rubber material only
Screw (M3) mount on panel front or piping
installation
For "RZ," specify connection standard & size
separately.

Screw (M3) mount on panel front or piping
installation

Specify connection standard & size separately.

For "ZR" or "ZF," specify connection standard& rating separately.

OTHER AVAILABLE OPTIONS
You can specify the following options:Two-point alarm, alarm setting on the front face, length of reed switch lead wire, double graduations, special graduations, rubber joint type, other jointtypes, etc. For details, refer to "Index & Quick Reference for P Series Purgemeters" (TG-S0001).

TG-F2498-E00

TOKYO KEISO CO., LTD.

3

P-510 Purgemeter

ORDERING INFORMATION
Basic model code

Items to be specified
①
②
③
④
⑤
Fluid name − Flow range − Press. − Temp. − Mounting option

Ｐ-51 □ - □□ - □□ - □□（Select in the model code table.）−⑥
Other options（Refer to "Index & Quick Reference for P Series Purgemeters" (TG-S0001).）

DIMENSIONS● Standard typeP － 510 － U0 － 4N － R3

● Panel mount typeP － 510 － U0 － 4N － L3

■ Screw (M3) mount on the panel front（54）（MAX.42）45■ Valve at the outlet■ Lock nut mounting on the panel front（54）

2-Rc3/8（MAX.42）

45

L■ Valve at the outlet

2-D

282-φ

OUT

H2-φ

OUT

（22.5）

OPEN SHUT

OPEN SHUT

200200200

155200（229）

（229）

44-φ

Max. thicknessof the panel: 10IN
292-d（22.5）

IN● Standard material

Panel cut● Bezel installation typeP － 510 － L0 － 4N － R3
■ Bezel installation (Mounting option code: D)■ Valve at the inlet

60

292-Rc3/8

OUT

2-φ5Gasket○ Nitrile rubber (NBR)

SpindleValve
Mounting plate ＊ 2Cover○ SUS304○ SUS304
SPCC
Acryl

Available material−−
SUS316
Fluoro rubber,
Chloroprene rubber(CR), Ethylenepropylene rubber(EPDM)SUS316
SUS316
SUS304−

SUS316 may be used instead of SUS304 due to production reasons.
ASTM or AISI materials equivalent to JIS materials may be used due toproduction reasons.

200（229）

Window（124×40）

43240

128

Standard material○ SCS14○ Heat-resistant glass○ SUS304,PTFE＊ 1 We will select a proper material for your application.
＊ 2 C2801P is used when the alarm output code is one of A to D.

● Panel cut dimensions

22.5

13.5

155

Parts nameBody
Tapered tube
Float ＊ 1

Parts marked“○”come in contact with the measuring fluid.

13.5

4-φ6（φ11countersink）

Panel

Panel cutIN
φ27

Panel cut

OPEN SHUT

Bezel(thickness: 3 mm)（54）45（MAX.42）

Fo r th e pa n el m o u nt t yp e , h ole dia m eters va r y d e p e n ding o nconnection sizes and standards. For specific dimensions, see thetable below.
Connection
size
DdRc 3/8 M26
3/8NPT M26
Rc 1/2 M30
1/2NPT M30

Diameter
H
28
28
32
32

Rear
length
L
26
26
26
26

Connection
size
DdRc 3/4 M36
3/8SW M20
3/8VCR M28
1/2VCR M28

Diameter
H38
2232
32

Rear
length
L
28
（34）
（38）
（38）

Note: Use non-magnetic material for the panel when the alarm output
code is one of A to D.

* 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 : https://www.tokyokeiso.co.jp
4TOKYO KEISO CO., LTD.

TG-F2498-E00