PSW20 Series
Pressure, vacuum or differential pressure switches
INSTRUCTION
M4067-0504
SHEET
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Installation Instructions for OMEGA PSW20 Series: Pressure, Vacuum and Differential
Pressure Switches.
General
The PSW20 series is single pole switch that can be used as a pressure or vacuum switch (from 0.40 in W. C. to
20 inches W. C.) or as a pressure differential switch. The switch can respond to rapid pulsing and the gold
plated silver contacts will handle low level switching currents.
Mounting Instructions
Switch may be mounted in horizontal or vertical position, through 0.12" (3mm) holes on 1.34" (34mm)
centerline, with suitable clearances to accommodate 0.15" I.D tubing and electrical connectors – see diagram
for dimensions.
Electrical, Pneumatic and Material/Mechanical Specification
Part
Number
Pressure range
(inches water, gauge)
Pressure Vacuum Differential
PSW20A
PSW20B
0.4-15
1-20
0.4-15
1-20
.04-15
1-20
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Media in Contact with Electrical Contacts
Note that the pressure media entering through Port A is in direct contact with the electrical contacts in the
switch, whereas the pressure media entering through Port B is separated from the electrical contacts by the
diaphragm.
Note: The EPDM diaphragm should not be used with petroleum products. Specify Nitrile for these applications.
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Servicing Europe:
Benelux:
Postbus 8034, 1180 LA Amstelveen, The Netherlands
OMEGAnet® Online Service
www.omega.com
Internet e-mail
Tel: +31 (0)20 3472121
FAX: +31 (0)20 6434643
Toll Free in Benelux: 0800 0993344
e-mail: [email protected]
Servicing North America:
One Omega Drive, Box 4047
Stamford CT 06907-0047
Tel: (203) 359-1660
Czech Republic: Frystatska 184, 733 01 Karviná, Czech Republic
USA:
ISO 9001 Certified
Tel: +420 (0)59 6311899
Toll Free: 0800-1-66342
FAX: +420 (0)59 6311114
e-mail: [email protected]
FAX: (203) 359-7700
France:
11, rue Jacques Cartier, 78280 Guyancourt, France
Tel: +33 (0)1 61 37 2900
Toll Free in France: 0800 466 342
e-mail: [email protected]
e-mail: [email protected]
FAX: +33 (0)1 30 57 5427
Canada:
976 Bergar
Laval (Quebec) H7L 5A1, Canada
Tel: (514) 856-6928
FAX: (514) 856-6886
Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany
e-mail: [email protected]
Tel: +49 (0)7056 9398-0
FAX: +49 (0)7056 9398-29
Toll Free in Germany: 0800 639 7678
e-mail: [email protected]
For immediate technical or application assistance:
®
USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA
®
United Kingdom: One Omega Drive, River Bend Technology Centre
Customer Service: 1-800-622-2378 / 1-800-622-BEST
®
ISO 9002 Certified
Northbank, Irlam, Manchester
M44 5BD United Kingdom
Tel: +44 (0)161 777 6611
Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA
FAX: +44 (0)161 777 6622
Mexico:
En Espan˜ol: (001) 203-359-7803
FAX: (001) 203-359-7807
e-mail:[email protected]
Toll Free in United Kingdom: 0800-488-488
e-mail: [email protected]
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, human applications.
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, 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 WHATSOEVER, 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.
PATENT NOTICE: U. S. Pat. No. 6,074,089; 5,465,838 / Canada 2,228,333; 2,116,055 / UK GB 2,321,712 / Holland 1008153 / Israel 123052 / France
2 762 908 / EPO 0614194. Other patents pending.
FOR WARRANTY RETURNS, please have the following information
available BEFORE contacting OMEGA:
FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges.
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.
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 2004 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.
M4067/0504
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