Omega Products PSW601B Installation Manual

PSW601B TERMINAL BLOCK

PSW601B CIRCUIT LAYOUT

POWER +
POWER –

NC

C

NO

SETPOINT POTENTIOMETER

DEADBAND POTENTIOMETER

INDICATING LEDs

M3422 8/99 DPS-5C-1P-10/99 Printed in U.S.A.

®

PSW601B

N-Series

INSTRUCTION

SHEET

M3422/1002

INSTALLATION AND MAINTENANCE PSW601B SERIES

OMEGA®ELECTRONIC SWITCHES FOR PRESSURE CONTROL

INTRODUCTION

The Omega pressure switch is a pre­cision built control device which fea­tures a polysilicon thin film pressure
sensor (Transducer). Controllers are
available for operation on pressure
or vacuum with fixed or variable dif­ferential. The standard electrical
switch is a SPDT sealed mechanical
relay. The wetted materials are 17­4pH and 316 stainless steel.

The Omega pressure switch is fur­nished in the standard NEMA 4
enclosures which are epoxy coated
aluminum castings.

INSTALLATION

These controls are precision instruments
and should never be left with internal
components exposed. After installation,
ensure that the covers are in place
and the conduit openings are closed.

MOUNTING PSW601B SERIES

There are three holes external to the
enclosures for surface mounting. The
location of these holes are shown on
the general dimension drawing. The
controls may also be mounted direct­ly on the pressure line using the pres­sure connection. When tightening the

control to the pressure line, always
use the wrench flats or the hex on the
lower housing.

ELECTRICAL CONNECTIONS

Remove cover

PSW601B Series – two screws hold

cover to enclosure.

CONDUIT CONNECTIONS

Note – It is recommended that Teflon
tape or other sealant be used on the
conduit, bushing or plug threads to
ensure the integrity of the enclosure.

PSW601B Series Standard – one

1

⁄

2

NPT conduit hole right side.

PSW601B SERIES
SPDT – Wire directly to the terminal

block according to circuit require­ments. For 120/250Vac 60Hz switch,
wire power lines to terminals marked
AC. For 24Vdc switch, wire positive
power line to terminal marked
24Vdc+ and wire negative power line
to terminal marked 24Vdc–.

Adjustment of Setpoint – A four turn

adjustment potentiometer is located
at the upper right corner on the
inside of the enclosure.

For accurate setpoint calibration,
mount the switch on a calibration
stand, a pump or catalog DWT-1305
deadweight gauge tester. A suitable
reference standard such as an Omega
Test Gauge is necessary to observe
changes in pressure.

As received, the pressure switch will
normally be set to approximately 90%
of the indicated range. Pressurize the
system to the required setpoint and
turn the adjustment potentiometer
until the switch changes mode.
Clockwise rotation of the potentiome­ter will increase the setpoint and
counter clockwise rotation of the
potentiometer will decrease the set­point. When the setpoint has been
achieved, raise and lower the pres­sure to ensure that the setpoint is cor­rect. The indicating LEDs will show
red when the pressure is below the
setpoint and green when the pressure
is above the setpoint.

Adjustment of Deadband – A four
turn adjustment potentiometer is
located at the upper right corner on
the inside of the enclosure just below
the setpoint potentiometer.

The deadband is adjusted as above.
Clockwise rotation of the potentiome­ter will increase the deadband and
counter clockwise rotation of the poten­tiometer will decrease the deadband.

After installation of the control,
replace the cover to ensure electrical
safety and to protect the internal parts
from the environment.

B

Ø 0.28
(3 Holes)

D

A

C

1/2 NPT Male &
1/4 NPT Female

3/4 NPT

F

1/4 NPT
Female

H

A

I

G

E

PSW601B

ABCDEFGHI J

5431⁄4 35⁄16 23⁄4 25⁄16

13⁄16 23⁄4

23⁄16 23⁄4

(127) (102) (83) (84) (70) (59) (30) (70) (56) (70)

1.8 lb

(.81 kg)

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 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 should malfunction, 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 being 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, 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. P. O. 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-W

ARRANTY

REPAIRS,

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

1. P. O. number to cover the COST of the repair,

2. Model and serial number of 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 1999 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 prior written consent of OMEGA ENGINEERING, INC.

MADE IN

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USA: One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford CT 06907-0047

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

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Laval (Quebec) H7L 5A1
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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

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

[e-mail]

omega.com

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www.omega.com [e-mail]

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Benelux: Postbus 8034, 1180 LAAmstelveen, The Netherlands

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 06 0993344
e-mail: [e-mail]

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TEL: [phone] FAX: [phone]
Toll Free in Germany: 0800 TC OMEGA

SM

e-mail: [e-mail]

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ISO 9002 Certified Irlam, Manchester,

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

TM

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