Omega Products PX26-001DV Installation Manual

GENERAL INFORMATION

OMEGA’s Pressure sensors are four-active piezoresistive bridge devices. When pressure is applied, a different output
voltage proportional to that pressure, is produced.

Wet/Wet Differential Pressure Sensors simultaneously accept independent pressure sources. Gage Pressure Sensors provide
a form of differential pressure measurement in which atmospheric pressure is used as a reference.

The PX26 is available in variety of PSI ranges and as differential and gage sensors:

MODEL NUMBER (GAGE) RANGE MODEL NUMBER (DIFFERENTIAL) RANGE

PX26-001GV 0-1 PSIG PX26-001 DV 0-1 PSID
PX26-005GV 0-5 PSIG PX26-005DV 0-5 PSID
PX26-015GV 0-10 PSIG PX26-015DV 0-15 PSID
PX26-030GV 0-30 PSIG PX26-030DV 0-30 PSID
PX26-100GV 0-100 PSIG PX26-100DV 0-100 PSID
PX26-250GV 0-250 PSIG PX26-250DV 0-250 PSID

UNPACKING

Remove the packing list and verify that all equipment has been received. If there are any questions about the shipment,
please call OMEGA Customer Service Department at 1-800-622-2378 or 203-359-1600. We can also be reached on the Internet
at omega.com e-mail: [e-mail]

Upon receipt of shipment, inspect the container and equipment for any signs of damage. Take particular note of any
evidence of rough handling in transit. Immediately report any damage to the shipping agent.

The carrier will not honor any claims unless all shipping material is saved for their examination. After examining and
removing contents, save packing material in event reshipment is necessary.

MEDIA COMPATIBILITY

Input media are limited to those media which will not attack polyester,
flurosilicon, or silicon, such as oils, lacquer thinner, hydraulic fluid, most
petroleum products, water and salt water. Not recommended for freons.

SOLDERING

Limit soldering temperature to 600°F (315°C) for 10 seconds duration
maximum.

WARNING! READ BEFORE INSTALLATION

Fluid hammer and surges can destroy any pressure transducer and must always be avoided. A pressure snubber should
be installed to eliminate the damaging hammer effects.

Fluid hammer occurs when a liquid flow is suddenly stopped, as with quick closing solenoid valves. Surges occur when
flow is suddenly begun, as when a pump is turned on at full power or a valve is quickly opened.

Liquid surges are particularly damaging to transducers if pipe is original empty. To avoid damaging surges, fluid lines
should remain full (if possible), puts should be up to power slowly, and valves opened slowly. To avoid damage from both
fluid hammer and surges, a surge chamber should be installed, and a pressure snubber should be installed on every
transducer.

Symptoms of fluid hammer and surges damaging effects:
a) Pressure transducer exhibits an output at zero pressure (large zero offset). If offset is less than 10% FS, user can usually

re-zero meter, install proper snubber and continue monitoring pressures.
b) Pressure transducer output remains constant regardless of pressure.
c) In severe cases, there will be no output.

–+

–+

METER

1

2
3

NOTCHED (PIN 1)

ELECTRICAL CONNECTION

4

NOTE:

PX26 SERIES

Pressure Transducers

INSTRUCTION

SHEET

M1608/1204

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O 1.2

O .05

O 5.1

O .20

8.0
.31

2.79
.110

2.3

.09

4X 0.5

4X .02

O 6.4
O .25

4X 1.0

4X .04

21.8

.86

1.7

.06

12.7

.50

4X 0.41

4X .016

3X 2.5

3X .10

10.2

.40

4X .02

O 1.2

O .05

O 6.4

O .25

8.0

.31

2.79

.110

2.3

.09

4X 1.0

4X .04
4X 0.5

O 5,1

O .20

3X 2.5

3X .10

1.3

.05

21.8

.86

34.4

1.35

1.7

.06

12.7

.50

4X 0.41

4X .016

PORT P2

PORT P1

SPECIFICATIONS

EXCITATION: 10Vdc, 16Vdcmax @ 2mA
OUTPUT: 100mV, 1 10mV/V

(16.7mV, 1.67mV/V for
1 PSI range)
(50mV, 5mV/V for 5PSI range)

ACCURACY: 1% FS
LINEARITY: 1.0% FS BFSL
HYSTERESIS & REPEATABILITY: 0.2% FS
ZERO BALANCE: ±1.5mV
SPAN TOLERANCE: ±3.0 mV
STORAGE TEMPERATURE: -67° to 212°F (-55° to 100°C)
OPERATING TEMPERATURE: -40 to 185°F (-40° to 85°C)
COMPENSATED TEMPERATURE: 32° to 122°F (0° to 50°C)
THERMAL EFFECTS: ZERO: 1 mV
(25 to 50°C, 25 to 0°C) SPAN: 1% Rdg
PROOF PRESSURE: 20 PSI for 1 and 5 PSI range

45 PSI for 15 PSI range
60 PSI for 30 PSI range
200 PSI for 100 PSI range
500 PSI for 250 range

INPUT RESISTANCE: 7.5k Ω
OUTPUT RESISTANCE: 2.5k Ω
RESPONSE TIME: 1 msec.
SHOCK: Qualified to 150 G
VIBRATION: Qualified to 2kHz @ 20 G sine
GAGE TYPE: Silicon sensor
WETTED PARTS: Polyester, Silicon, flurosilicon
MATING CONNECTOR: CX136-4, not included
PRESSURE PORT: 0.20" dia. & 0.25" collar dia.
ELECTRICAL CONNECTION: Pin 1 +EXC (notched)

Pin 2 +OUT
Pin 3 –EXC
Pin 4 –OUT

WEIGHT: Approx 0.07 oz (2 gm)

Gage Sensor

Pressure is applied

to Port P2

Port P 1 vents to

ambient pressure

Differential

Sensor

Port P 1 is near

terminals.

Servicing North America:

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

ISO 9001 Certified Stamford, CT 06907-0047

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

Canada: 976 Bergar

Laval (Quebec), H7L 5A1 Canada
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]
Latin America [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: 0800 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 United Kingdom
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

OMEGAnet®On-Line Service Internet e-mail

omega.com [e-mail]

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 O rd er 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 2010 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.

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 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.

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 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.