Omega Products SRFG Installation Manual

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TM

®

SRFR/SRFG SERIES

Flexible Silicone Rubber Heaters

INSTRUCTION

SHEET

M1250/0800

DESCRIPTION

OMEGALUX

®

Silicone Rubber
Fiberglass Insulated Heaters can
improve heat transfer and speed
warm-ups where controlled heating
is required in confined areas. Two
circuit designs are available: etched
foil or wire wound. Heaters with
etched foil designed elements are
available where the length or width
dimension is less than 12"
(305 mm). All other heaters where
both the length and the width
dimensions exceed 12" (305 mm)
use the wire-wound element design.

Effect of wattage density (at 115V):
gentle warming is best done with 2.5
W/in

2

. Agood all-purpose unit is the

5 W/in

2

. Rapid warm-up and high
temperature are achieved with the
10 W/in

2

; however, temperature
must be controlled as the safe
maximum operating temperature
limit of 450°F (232°C) may be
exceeded.

Two general styles are covered in
this manual. Round silicone rubber
heaters and rectangular silicone
rubber heaters. All part numbers
and total wattage for each heater
are listed in The Electric Heaters
Handbook™, 21st Century
Edition™.

ROUND SILICONE RUBBER
HEATERS

Styles are available from 3" to 12"
diameters. The part number scheme
is as follows:

• SRFR-[ ]/* for those heaters
without the pressure sensitive
adhesive

• SRFR-[ ]/*-P for those heaters with
the pressure sensitive adhesive.

where [ ] is the diameter of the
heater and * is the watt density.

NOTES: Heaters with pressure
sensitive adhesive are not available
at 10 W/in

2

. Maximum operating

temperature is 250°F (120°C).

Examples:

6" round heater with 2.5 W/in

2

wattage density, without pressure
sensitive adhesive has the part
number SRFR-6/2.

8" round heater with 5 W/in

2

wattage
density, with pressure sensitive
adhesive has the part number
SRFR-8/5-P.

RECTANGULAR SILICONE
RUBBER HEATERS

Styles are available from 1" width by
1" length to 12" width by 48" length.
More specifically, the length varies
from the smallest width dimension
increasing by 1 inch to 12", and
jumps to 18", 24", 30", 36", 42", and
48".

NOTES: Some sizes of heaters do
not come in all lengths listed above.
For details, refer to The Electric
Heaters Handbook™, 21st Century
Edition™. The handbook also lists
the total wattage for each heater.

The part number scheme is as
follows:

• SRFG-[X] [ ]/* for those heaters
without the pressure sensitive
adhesive.

• SRFG-[X] [ ]/*-P for those heaters
with the pressure sensitive
adhesive.

where [X] is the width of the heater,
[ ] is the length of the heater, and *
is the watt density.

NOTES: Heaters with pressure
sensitive adhesive are not available
at 10 W/in

2

. The maximum operating

temperature is 250°F (120°C).
Examples:
Smallest heater 1" wide x 1" long

with a wattage density of 10 W/in

2

and no pressure sensitive adhesive
(not available in 2.5 W/in

2

or 5 W/in2)
has the part number of
SRFG-101/10.

1"W x 48"L heater with 5 W/in

2

wattage density with pressure
sensitive adhesive has the part
number of SRFG-148/5-P.

2"W x 8"L heater with 10 W/in

2

wattage density without pressure
sensitive adhesive has the part
number of SRFG-208/10.

6"W x 42"L heater with 2.5 W/in

2

wattage density with pressure
sensitive adhesive has the part
number of SRFG-642/2-P.

INST ALLATION AND OPERA TION
CAUTION!

Use a method of temperature
control (e.g., thermostat,
thermocouple and temperature
controller, or variable voltage
transformer) to prevent heaters from
exceeding maximum operating

temperature ratings. Place
temperature sensor close enough to
the heater to sense heater
temperature.

1. DO NOT immerse heaters in
liquids.

2. DO NOT operate heaters at a
voltage higher than the specified
or rated voltage.

Heaters CAN be operated at the
rated voltage of 115VAC or lower. In
order to determine the actual
wattage developed at applied
voltages lower than the rated
voltage, use the following formula:

PA= PRx V

A

2

V

R

2

where: PR= rated wattage; PA=
actual wattage; VR= rated
voltage and VA= actual voltage

3. DO NOT cut, punch holes in or
otherwise mishandle heaters.

4. AVOID exposing heaters to
chemicals, acids, alkalies, oils,
fluids or other substances that
could ignite or cause damage to
the heater.

5. DO NOT insulate heaters unless
adequate measures are taken to
control heater temperature.

6. DO NOT leave heater operating
unattended unless adequate
controls are installed to insure
safety.

7. Heaters can be bent around
curved surfaces; however, DO
NOT exceed minimum bending
radius.

8. Exercise care in attaching heaters
to flat or curved surfaces. Heaters
can be attached by mechanical
clamping, by using factory applied
pressure sensitive adhesive
(PSA), or with a thin layer of RTV.
Make sure that the entire heater
is in contact with the surface with
no air pockets trapped
underneath. This is especially
important for high watt density
heaters, i.e., heaters with a watt
density of 10 watts/square inch,
to prevent heater failure. DO NOT
overlap heaters.

9. Heaters must be attached to an
appropriate heat sink and should
NOT be mounted free standing in
air.

It is the policy of OMEGA 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 Engineering, Inc. 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 , patient-connected applications.

WARRANTY/DISCLAIMER

OMEGA®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, moisture or
vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control.
Components which wear are not warranted, including but 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 it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHA TSOEVER, EXPRESS 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 W

ARRANTY 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 the product, 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 2000 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.

UUSASA

MADE

ININ

Servicing North America:

USA: One Omega Drive, Box 4047

ISO 9001 Certified Stamford CT 06907-0047

Tel: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1
Tel: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

USA 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

®

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: En Espan˜ol: [phone]-7803 e-mail:[e-mail]

FAX: [phone] [e-mail]

OMEGAnet®Online Service Internet e-mail

www.omega.com [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LAAmstelveen, The Netherlands

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Rudé armády 1868, 733 01 Karviná 8

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 9, rue Denis Papin, 78190 Trappes

Tel: [phone] FAX: [phone]
Toll Free in France: 0800-4-06342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678

e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5EX United Kingdom
Tel: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

10. Make sure heaters are installed
and used by qualified personnel.
DO NOT attempt to repair
damaged heaters.

SPECIFICATIONS
HEATING ELEMENT DESIGN:

Typically wire wound; certain sizes
may have etched foil elements.

MAXIMUM OPERATING
TEMPERATURE: Heaters without

Pressure Sensitive Adhesive (PSA),
450°F (232°C). Heaters with

Pressure Sensitive Adhesive (PSA),
250°F (120°C).

VOLTAGE: 115 Volts
WATT DENSITY: 2.5, 5 or 10

watts/in

2

WATTAGE: 5 to 1440 watts
PRESSURE SENSITIVE

ADHESIVE (PSA): optional, not

available at 10 watts/square inch
watt density

LEAD WIRE: 12" (305mm) of

Teflon

®

insulated lead wire (wire

gauge varies with heater)

DIELECTRIC STRENGTH:

1250 VAC

MINIMUM BENDING RADIUS:

2.00" typical
HEATER THICKNESS: 0.045-

0.00700", except at lead wire exit
(thickness varies with heater)

DIMENSIONS: Refer to the other
side.

Teflon®is a registered trademark of DuPont.

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®