Omega Products FMA-A2200 Installation Manual

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

ISO 9001 Certified

Stamford, CT 06907-0047
Toll-Free: 1-800-826-6342 Tel: [phone]
FAX: [phone] e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec), Canada H7L 5A1
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378/1-800-622-BEST

®

Engineering Service: 1-800-872-9436/1-800-USA-WHEN

®

Mexico: En Español: 001 [phone] FAX: [phone]

[e-mail] e-mail: [e-mail]

Servicing Europe:

Benelux: Managed by the United Kingdom Office

Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Czech Republic: Frystatska 184

733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

France: Managed by the United Kingdom Office

Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26

D-75392 Deckenpfronn, Germany
Toll-Free: 0 800 6397678 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

United Kingdom: OMEGA Engineering Ltd.

ISO 9001 Certified

One Omega Drive, River Bend Technology Centre, Northbank
Irlam, Manchester M44 5BD England
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

omega.com [e-mail]

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

TABLE OF CONTENTS

1.0 Introduction and Description..................................................2

2.0 Specifications ........................................................................3

3.0 Installation..............................................................................4

3.1 Plumbing Connections ..........................................4

3.20 Power ....................................................................4

3.21 Output ....................................................................4

3.22 Setpoint ..................................................................4

3.23 D Conn Pin Out ......................................................5

4.0 Operation ..............................................................................6

4.1 Zero Check ............................................................6

4.11 Display Zero ..........................................................6

4.12 O-5 Output Zero ....................................................6

4.2 Flow Measurement ................................................6

4.3 Flow Control ..........................................................6

5.0 Using K Factors ....................................................................7

6.0 Special Notes ........................................................................8

Index of Appendix

A. Part List ......................................................................9

B. Gas K Factors ..........................................................10

Omega FMA Series Instruction Manual

1

1.0 Description

Omegaʼs FMA Series mass flow meters and controllers utilize a
capillary type thermal technology to directly measure mass flow.
No temperature, pressure, or square root corrections are
required.

The FMA Series is available with an LCD display and linear 0-5
or 4-20 ma output. Display and outputs read in direct Engineering
units. Engineering units may be mass units such as Gr/s, LB/H,
Kg/H...or in volumetric units referenced to a standard pressure
and temperature I.E. SCCM, SLPM, SCFH. Omega uses 70° F
and 29.92” Hg or 21° C and 760 Torr as standard reference
conditions. (Others available on request).

The FMA Series is available in Polyoxymethylene (POM) or 316
Stainless Steel. Polyoxymethylene (POM) is compatible with
most non-corrosive gases. The user is responsible to check
wetted materials against gas compatibility.

Omega mass flow meters are calibrated to NIST standards for a
specific gas and range selected by the customer, however K
Factors can be used to measure other gases.

FMA Series controllers use an integral electromagnetic propor­tional valve to control the mass flow rate. Command signal is
supplied by the onboard set point pot or a external 0-5 VDC
supplied to the D connector.

Omega cost savings design supplies a complete flow measure­ment and control system in one compact package making it ideal
for OEM, laboratories, and process control applications.

Omega FMA Series Instruction Manual

2 2

2.0 Specifications

Wetted Material

Flow Bodies Plastic Model

Stainless Steel Model

(POM), 316 SS & 17-4SS 316/174 SS

Elastomers Standard - FKM

Optional - Buna, Perfluoroelastomer, or
EPDM.

Output Signal Linear 0-5 VDC Linear or 4-20 MA

Input Power Standard: 24 VDC @ 350 MA

Optional: 12, 15 VDC / 115, 220 VAC with
AC adapter

Accuracy +_1% FS (including Linearity)

Connection 9 pin Sub D

Control Signal  Integral or 0-5 VDC

Control Valve Electromagnetic

Norm. Closed

Max Pressure Plastic Model - 250 PSIG, Stainless Steel

Model - 500 PSIG

Response Time 1-2 second

Omega FMA Series Instruction Manual

3

3.0 Installation

3.1 Plumbing

(Caution: The FMA Series has a maximum temperature or 150 F
and a maximum pressure of 500 psig.)

The FMA Series has 2 x 4-40 mounting holes on the bottom.
Standard fittings are 1/4” compression fitting. When plumbing
meters insure the flow arrow on the front label is in the direction
of flow. Before operation insure system is leak free.

Capillary mass meters are susceptible to clogging. If your line or
gas has particulate entrained use a 50 - 100 micron filter up
stream of the meter.

3.20 Power

Omega FMA series meters require 24 VDC @ 250 ma for
meters and 320ma for controllers, via the 9 pin sub D connector.
Power is typically supplied with a wall mounted AC adapter.

3.21 Output

Omega FMA series has a standard 0 - 5 VDC and 4-20 ma
linear output from the 9 pin sub D connector. The 4 - 20 MA 
signal is a self powered “4 wire type” referenced from ground, do
not apply power to this line.

3.22 Setpoint

The FMA series controllers require a linear 0 - 5 VDC setpoint.
This signal can be supplied from the integral setpoint pot located
on the right side of the controller or from a remote source. The
integral setpoint is jumpered through the mating sub D connector
from pins 9 to 5. To use a remote setpoint signal, open the
mating sub D connector housing and remove the jumper
between pins 5 & 9 and input the remote 0-5 VDC on pins #5(+),
#2(common) and wire remote 0 - 5 to pins 5 (Hi) & 2 (Common).

4