PRODUCT INFOMATION

Flow MasterAccurate, Stable, Handy Flow Generator
Customized to the specified pressure and flow.
Use the Flow Master as a standard for testing and comparing flowmeters.
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Improved long-term flow stability.
Enhanced prevention of distortion during installation.
Check the sensitivity of flow testers easily and reliably.
Extremely low flow variation ensures long-time stable use.
Can be used as a flow master for measuring deviation flow.
(Test for ventilation and bore diameter of holes)
15% more compact than conventional products.
The numerical value of the tester can be checked by connecting to theCAL port of the tester.
Can be used for Flow Check (C-CHK), (F-CHK) of AF series.
Joints for connecting to the piping available.
Easy connection and disconnection with a plug.
ISO/IEC17025 calibration available.

Accuracy (Difference from the requiredflow): Within ±10%
HIGHside

LOWsideCustomized to the desired flow. Use it as a reference instrument.

Pressureb,cVacuum

FM-2C(a)(b,c)
Example) FM-2C(R2)(50mL/min,100kPa)
aJoint connection diameter
HIGH-side
LOW-side
Specification (a)
R1/4
R2
R1/4
Ø8
R21R1/2
R22R1/4
R3R1/2
Ø8R31R1/2
R32
R1/4
R4
Ø8
Ø8R41R1/2
R42

*1

*2

Required flow / Pressure
Flow (b) *1
Test Pressure (c) *2
50 mL/min to 3 L/min
1 to 10 kPa
100 mL/min to 10 L/min
10.1 to 21 kPa
200 mL/min to 15 L/min
21.1 to 51 kPa
0.3 L/min to 25 L/min
51.1 to 100 kPa
0.5 L/min to 35 L/min
100.1 to 150 kPa
0.5 L/min to 45 L/min
150.1 to 200 kPa
0.5 L/min to 55 L/min
201 to 250 kPa
0.5 L/min to 65 L/min
251 to 300 kPa
0.5 L/min to 70 L/min
301 to 350 kPa
0.5 L/min to 80 L/min
351 to 400 kPa
50 mL/min to 3 L/min-1 to -10 kPa
100 mL/min to 10 L/min-10.1 to -21 kPa
100 mL/min to 15 L/min-21 to -50 kPa
200 mL/min to 5 L/min-50 to -89 kPa
For up to 200 mL/min, specify in units of 1 mL/min.
For up to 2 L/min, specify in units of 0.01 L/min.
Beyond that, specify in units of 0.1 L/min or more.
For less than 200 kPa, specify in units of 0.1 kPa.
For others, specify in units of 1 kPa.
Note: Flows between "201 and 209 mL/min" and between"2.01 and 2.09 L/min" are outside our standard ranges.
Request for quotation is required for these ranges.

For FM-2C, the flow is indicated by the "Conversion Flow".
Conversion Flow
The flow value measured and then converted when the Flow Master is produced. The value varies depending on theenvironmental conditions (temperature, atmospheric pressure).

1

FM-2C is a standard flowmeter with a fixed pressure and flow.
Unlike float-type flowmeters, it is unnecessary to determine the flow using a regulator valve,
and there is no trouble such as damage to the float due to inrush pressure.
Since standard flow rate can be set, it is ideal for accuracy check.

1) Connect to Flow Tester
1) When connecting the Flow Master to Flow Tester:Connect the Flow Master to the CAL port.
(*1, *2)
Flow Tester*1*2

CAL side

For mass flow sensor: Port size R1/2
For laminar flow sensor:
10 to 200 mL/min: Port size R1/ 4
500 mL min or more: Port size R1/2

WORK side2) Connect to Piping
2) When connecting the Flow Master to Piping:Connect as shown.
Attaching a shutoff valve in front of the Flow Master makes it
possible to perform testing with the Flow Master left connected.
(Open the valve when using the Flow Master.
Close when not using.)

External Appearance
Specifications

Entire length (mm)R2104

R21105

R22106

R3106

R31107

R32108

R4105

R41106

R42107The contents of this Product Information are as of July 2024. The specifications are subject to change without prior notice.

Cosmo Instruments Co., Ltd.

http://www.cosmo-k.co.jp/2974-23 Ishikawa, Hachioji, Tokyo 192-0032 Japan

Phone: +81-(0)42-642-1357 Fax: +81-(0)42-646-2439

China: Cosmo Instruments (China,Jiaxing) Co., Ltd.

+86-(0)573-82800886

Shanghai Office, Tianjin Office, Guangzhou Office, Chongqing Office, Changchun Office, Wuhan Office

Korea: Cosmo Korea Co., Ltd. Incheon Office
Changwon OfficeTaiwan: Taiwan Cosmo Instruments Co., Ltd.
Taichung Office
Malaysia: COSMOWAVE SDN. BHD.
Thailand: Cosmowave Technology Co., Ltd.
Indonesia: Pt. Cosmowave+82-(0)32-623-6961+82-(0)55-264-1358+886-(0)2-2707-3131+886-(0)4-2270-2286+60-(0)3-51626677+66-(0)2-7361667+62-(0)21-89328750

Vietnam: Cosmowave Vietnam Co., Ltd.
India: Cosmo Instruments India Pvt. Ltd. Head Office+84-(0)24-37876085+91-(0)124-421-0946

South Zone Regional Office, Pune - Chakan Office, Chennai Office, Gujarat Office

Germany: Cosmo EU Solutions Technology GmbH
USA: Cosmo Solutions Technology, Inc.
Mexico: Cosmo De Mexico, Silao OfficeMonterrey OfficeBrazil: Tex Equipamentos Eletronicos Ind. Com. Ltda.
Australia: Industrial Research Technology Pty. Ltd.

+49-212-38367171+1-248-488-2580+52 (472) 117-2157+52 (81) 1104-2479+55-(0)11-4591-2825+61-(0)412-176-674

FM-2C-985B1-A2