User’s Guide
http://www.omega.com
email: [email protected]
MODEL PX2300
Differential Pressure Transmitters
OMEGAnet
On-Line Service http://www.omega.com
USA:
ISO 9001 Certified
Tel: (203) 359-1660 e-mail: [email protected]
Canada:
Laval (Quebec) H7L 5A1
Tel: (514) 856-6928 e-mail: [email protected]
Servicing North America:
One Omega Drive, Box 4047
Stamford, CT 06907-0047
FAX: (203) 359-7700
976 Bergar
FAX: (514) 856-6886
USA and Canada
Customer Service:
Engineering Service:
TELEX:996404
Mexico and Latin America:
Benelux:
Tel: (31) 20 6418405
Czech Republic
Tel: 420 (69) 6311899
France:
Tel: (33) 130-621-400
Germany/Austria:
Tel: 49 (07056) 3017
United Kingdom:
ISO 9002 Certified
For immediate techincal or application assistance:
Sales Service: 1-800-826-6342/1-800-TC-OMEGASM
1-800-622-2378/1-800-622-BESTSM
1-800-872-9436/1-800-USA-WHENSM
EASYLINK: 62968934
Tel: (95) 800-826-6342
CABLE: OMEGA
FAX: (95) 203-359-7807
En Espan ~ ol: (95) 203-359-7803 email: [email protected]
Servicing Europe:
Postbus 8034, 1180 LA Amstelveen, The Netherlands
FAX: (31) 20 6434643
Toll Free in Benelux: 0800 0993344 e-mail: [email protected]
ul. Rude armady 1868, 733 01 Karvina-Hranice
FAX: 420 (69) 611114
Toll Free: 0800-1-66342
9, rue Denis Papin, 78190 Trappes e-mail: [email protected]
FAX: (33) 130-699-120
Toll Free in France: 0800-4-06342 e-mail: [email protected]
Daimlerstrasse 26, D-75392 Deckenpfronn, Germany
FAX: 49 (07056) 8540
Toll Free in Germany: 0130 11 21 66 e-mail: [email protected]
One Omega Drive, River Bend Technology Centre
Northbank, Irlam, Manchester
M44 5EX, England
Tel: 44 (161) 777-6611 FAX: 44 (161) 777-6622
Toll Free in the 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, patient-connected applications.
SS2043 02/26/99 Rev.A
General Information
The PX2300 Series pressure transmitters have been carefully tested and calibrated before shipment. Specific performance information is listed on the specification bulletin for the transmitter. The PX2300 is designed to be used as a wet-to-wet differential pressure transmitter with a 4 to 20 mA output and is contained in a NEMA 4 housing enclosure.
Environmental Conditions
The PX2300 is designed to be operated and be stored under the following environmental conditions:
Temperature
Operating:
Storage:
0 to 175 0 F (-18 to 80
-65 to 250 0
0 C)
F (-54 to 126 0 C)
Media Compatibility
The media exposure to the wetted parts of the PX2300 Series pressure transmitter must be compatible with 17-4 stainless steel, 300 series stainless steel, and Viton (Silicone).
Induced Environments
The PX2300 Series can withstand the following environments for vibration, shock and acceleration. Keep in mind that the unit accuracy is affected during each of these conditions and, although no permanent changes to performance will occur, means should be taken to avoid these induced environments to the best extent possible to provide the most accurate measurement:
Vibration: 2g from 5 to 500 Hz
Shock: 50g operating, 1/2 sine 10 ms
Acceleration: 10g maximum
Electrical Connections
Current Output Transmitters
The current output transmitters are true 2-wire (see Figure 1A), 4-20mA current devices and deliver rated current into any external load of 0-800 ohms. The 4-20mA current output units are designed to have current flow in one direction only – please observe polarity.
We suggest that any electrical cable shield be connected to the system’s loop circuit ground to improve electrical noise rejection.
To access electrical connections remove cover on top of the PX2300 Series transmitter (See Figure 1).
The PX2300 can operate over a voltage range of 9 to
30 VDC. It has been factory calibrated at 24VDC into a
250 ohm load. The minimum and maximum power supply must be capable of delivering these voltages to the PX2300. Thus, the minimum and maximum power supply calculation is shown below and is depicted in
Figure 2.
MIN Supply Voltage:
MAX Supply Voltage:
Figure 1
9 + 0.02 x (resistance of receiver plus line)
30 + .004 x (resistance of receiver plus line)
The PX2300 Series comes with a 7/8” diameter port intended for a 1/2” I.D. conduit connection. Contact factory for suggested fittings.
Figure 1A
+
Power
Supply
_
PX 2300
Transmitter
(4 to 20 mA)
+
_
+
Load
(Monitor)
_
Loop Power Supply vs.
Loop Resistance for 4 to 20mA Transmitters
Figure 2
Operating
Range
9
Loop Supply Voltage (Vdc)
30
Mounting and Pressure Fittings
Mounting - The PX2300 Series is supplied with a mounting bracket and two (2) 6-32 x
3/8 hex head screws. First attach bracket to mounting location using holes or band clamp notches available on large section of the bracket. Next, attach the transmitter to bracket by using the two 6-32 x 3/8” hex head screws and the two tapped holes located on the underside of the transmitter.
Pressure Fittings – Typically, standard pipe fittings and procedures should be used.
The PX2300 Series have 1/4”-18 NPT internal fittings. The high pressure port is labeled with the word “High”.
Installation Precautions
For differential pressure measurements at high line pressure (250 psig max.) it is recommended that the pressure sensor be installed with a valve in each line, plus a shunt valve across the high and low (reference) pressure ports as shown in Figure 3.
Valve A
High Figure 3
Valve C
Low
Valve B
Valve C should be open and valves A and
B closed whenever the system is first being wetted or pressurized. Valves A and B should be opened slowly to avoid hammering. Valve C can then be closed and the system will then be operating.
When the differential pressure sensor is to be removed, Valve C must be opened first, then Valves A and B can be closed.
Differential Pressure
Transducer
Valve A = High Side Valve
Valve B = Low Side Valve
Valve C = Shunt Valve
Figure 4
Bleed
Screws
Bleeding the Pressure Ports
3 bleed screws are on the side of the unit (see Figure 4) 2 for low pressure port, 1 for high pressure port.
Install the transmitter in its intended location and pressurize the ports. Back off the first bleed screw mounted on the flat side of the sensor body (2 turns max) until liquid begins to flow out. After only bubble-free liquid flows out, retighten the bleed screw. Repeat same procedure for the second set of bleed screws located on the round section of the low pressure fitting.
Calibration
All PX2300 Series pressure transmitters are carefully calibrated to the specific input pressure range vs. output current at the factory so little or no field calibrating is necessary. Zero and span adjustments are made by removing the cover on the top of the
PX2300 and the 6-32 seal screws in the plastic terminal block. Be sure to reinstall the seal screws after zero and/or span adjustments. Current output transmitters (4-20mA) are factory calibrated using a 250 ohm load at 24 VDC. Zero and span adjustments are approximately +/-1.0 mA, individually.
The PX2300 Series are calibrated with the diaphragm in the vertical position (pressure ports horizontal). For use in other orientations, position the unit and adjust the zero by following the calibration procedure listed in the preceding section. Optimum results will be achieved by using in the factory calibrated position. The PX2300 Series position effect is as shown in Table 1 (pressure ports in vertical plane):
Range
±
0.5 psid
±
1.0 psid
1.0 psig
2.0 psig
All other ranges
TABLE 1
High Pressure Port Face Up
-2% FS per g
-2% FS per g
-2% FS per g
-2% FS per g
-1% FS per g
High Pressure Port Face Down
+2%FS per g
+2%FS per g
+2%FS per g
+2%FS per g
+1%FS per g
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 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’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 WHATSO EVER, 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/INQUIRES
Direct all warranty and repair requests/inquires to the OMEGA Customer Service Department. BEFORE RETURN-
ING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUM-
BER 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. 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 the prior written consent of OMEGA ENGINEERING, INC.
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