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

3.24 D Conn. Pin Out

Pin Number

Function

1 Power Supply Ground
2 Set Point input Lo
3 4-20 MA Output High (blue wire)
4 0-5 VDC Output High (orange wire)
5 Set Point Input High
6 NC
7 24 VDC Power Input
8 Output Ground (brown wire)
9 Local Set Point Supply

(Must be jumpered to pin 5 for local set point.)

5 5

4.0 Operation

Apply power through the sub D connector and allow 5-10 minutes
warm up time. Controllers should have a zero setpoint. For local
setpoint models turn the setpoint adjustment knob fully clockwise.

4.1 Zero Check

Zero may shift in shipping or installation. Zero should be adjusted
after installation to insure accuracy.

Insure there is no flow through the transducer and check the 0 - 5
output or display for a zero reading.

4.11 Set Zero

The zero adjustment screw is available on the right hand side of
the meter. Turn the screw slowly until the display or 0 - 5 VDC 
output is at zero.

4.2 Flow Measurement

The FMA Series transducers measure mass flow directly and
read out in mass units per time. When calibrated for volumetric
units measurements are referenced from a standard temperature
and pressure. Outputs are linear over the calibrated flow range
with an accuracy of +_1% of Full Scale, 100:1 Turn Down.

4.3 Flow Control

Flow controllers combine a mass flow transducer with a normally
closed electromagnetic proportional valve. Controllers use a 0 - 5
VCD linear setpoint signal supplied from the local setpint pot or
from a remote source. The local setpoint voltage must be
connected through the external mating D connector from pins 9
to 5. This will enable the knob on the side of the mass flow
controller. For remote setpoint remove this jumper and wire 0 - 5
VDC to pins #2(common) and #5(+). Valves have a standard min­imum and maximum operating differential pressures of 10 - 50
PSIG. Others available on request.

6

5.0 Using K Factors

The FMA Series uses a thermal sensor technology which allows
the use of conversion factors from the calibrated gas to other
gases. To change to a new gas multiply the flow rate reading by
the ratio of the K factor for the new gas to the K factor of the
calibrated gas.

Reading X

K Factor New Gas

K Factor Cal. Gas

Accuracy is +_4% using this method.

7

8 8

9

10 10

111213

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds
an additional one (1) month grace period to the normal one (1) year product warranty to
cover handling and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer
Service Department will issue an Authorized Return (AR) number immediately upon phone or
written request. Upon examination by OMEGA, if the unit is found to be defective, it will be
repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting
from any action of the purchaser, including but not limited to mishandling, improper
interfacing, operation outside of design limits, improper repair, or unauthorized modification.
This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows
evidence of having been damaged as a result of excessive corrosion; or current, heat, moistur e
or vibration; improper specification; misapplication; misuse or other operating conditions
outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes
liability for any damages that result from the use of its products in accordance with
information provided by OMEGA, either verbal or written. OMEGA warrants only
that the parts manufactured by the company will be as specified and free of
defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY
KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL
IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total
liability of OMEGA with respect to this order, whether based on contract, warranty,
negligence, indemnification, strict liability or otherwise, shall not exceed the
purchase price of the component upon which liability is based. In no event shall
OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1)
as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or
activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or
with any nuclear installation or activity, medical application, used on humans, or misused in
any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER
language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from
any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT
(IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be
marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to
prevent breakage in transit.

FOR WARRANTY

RETURNS, please have
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which

the product was PURCHASED,

2. Model and serial number of the product

under warranty, and

3. Repair instructions and/or specific

problems relative to the product.

FOR NON-WARRANTY REPAIRS,

consult
OMEGA for current repair charges. Have the
following information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover the

COST of the repair,

2. Model and serial number of theproduct, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.
This affords our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2009 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without
the prior written consent of OMEGA ENGINEERING, INC.

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