PX139 Series
Pressure Sensors
INSTRUCTION
SHEET
M2003/0208
Shop online at: omega.com e-mail: [email protected]
For latest product manuals: omegamanual.info
General Description
The OMEGA ® PX139 Series Pressure Transducer uses state-of the-art micromachined silicon pressure sensors in conjunction with stress-free packaging techniques to provide highly accurate, temperature-compensated pressure transducers for the most demanding applications. Designed to operate from a regulated 5 volt DC power source, the PX139 provides a calibrated 4 volt output span of 0.25 to 4.25 volts.
PX139 pressure transducers are available in absolute and differential models.
Differential models can also be used to measure gage pressure or vacuum by simply varying the pressure connections. To measure gage pressure, make the pressure connection to port B and leave port A open to the atmosphere. For vacuum measurement, connect to port A and leave port B open. When using absolute models connect to port A.
Available Models
Gage/Differential
Pressure Ranges
±0.3 PSI
±1 PSI
±5 PSI
±15 PSI
±30 PSI
Absolute
Pressure Ranges
0 to 15 PSIA
0 to 30 PSIA
Model
PX139-0.3D4V
PX139-001D4V
PX139-005D4V
PX139-015D4V
PX139-030D4V
Model
PX139-015A4V
PX139-030A4V
PX139 Pinouts
1 =
2 =
+ Excitation
Common
3 = + Signal
4 = No Connection
PX139 Series Pressure Sensors
Unpacking
Remove the Packing List and verify that you have received all equipment, including the following:
PX139 Series Pressure Sensor
Operator’s Manual
If you have any questions about the shipment, please call the OMEGA
Customer Service Department.
When you receive the shipment, inspect the container and equipment for any signs of damage. Note any evidence of rough handling in transit.
Immediately report any damage to the shipping agent.
NOTE
The carrier will not honor any damage claims unless all shipping material is saved for inspection. After examining and removing contents, save packing material and carton in the event reshipment is necessary.
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 pressure transducers if the pipe is originally empty. To avoid damaging surges, fluid lines should remain full (if possible), pumps should be brought 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 surge’s damaging effects:
1. Pressure transducer exhibits an output at zero pressure (large zero offset). If zero offset is less than 10% FS, user can usually re-zero meter, install proper snubber and continue monitoring pressures.
2. Pressure transducer output remains constant regardless of pressure.
3. In severe cases, there will be no output.
PX139 Series Pressure Sensors
Dimensions
PINOUT:
1. + Excitation
2. Common
3. + Signal
4. No Connection
Specifications
Excitation Voltage:
Output:
5 Vdc
0.25 to 4.25 volts
Linearity and Hysteresis: ±0.1% FS typical, 0.5% max.
(0.5% typ., 1% max. for 0.3 PSI range)
Repeatability:
Zero Balance:
Storage Temperature:
Compensated Temp.
Range:
Zero Temp. Effects:
Span Temp. Effects:
Proof Pressure:
±0.3% FS
0.25 Vdc ±0.05 Vdc
-40 to 125°C (-40 to 257°F)
0 to 50°C (32 to 122°F)
±0.5% FS (±1% FS for 0.3 PSI)
±0.5% FS (±1% FS for 0.3 PSI)
> 3 X FS Pressure
> 5 X FS Pressure Burst Pressure:
Common Mode
Pressure:
Media Compatibility:
50 PSI
For use with gases compatible with silicon, glass-filled nylon, and alumina ceramic
OMEGAnet
®
Online Service Internet e-mail omega.com [email protected]
U.S.A.:
ISO 9001 Certified
Canada:
Servicing North America:
One Omega Drive, Box 4047
Stamford, CT 06907-0047
Tel: (203) 359-1660
FAX: (203) 359-7700 e-mail: [email protected]
976 Bergar
Laval (Quebec) H7L 5A1, Canada
Tel: (514) 856-6928
FAX: (514) 856-6886 e-mail: [email protected]
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 Espan˜ol: (001) 203-359-7803 e-mail: [email protected]
FAX: (001) 203-359-7807 [email protected]
Servicing Europe:
Czech Republic:
Frystatska 184, 733 01 Karvina´, Czech Republic
Tel: +420 (0)59 6311899
FAX: +420 (0)59 6311114
Toll Free: 0800-1-66342 e-mail: [email protected]
Germany/Austria:
Daimlerstrasse 26, D-75392 Deckenpfronn, Germany
Tel: +49 (0)7056 9398-0
FAX: +49 (0)7056 9398-29
Toll Free in Germany: 0800 639 7678 e-mail: [email protected]
United Kingdom:
One Omega Drive, River Bend Technology Centre
ISO 9002 Certified Northbank, Irlam, Manchester
M44 5BD United Kingdom
Tel: +44 (0)161 777 6611
FAX: +44 (0)161 777 6622
Toll Free in United Kingdom: 0800-488-488 e-mail: [email protected]
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.
Notes:
PX139 Series Pressure Sensors
Notes:
PX139 Series Pressure Sensors
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.
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 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 2008 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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M2003/0208
