Omega Products PX750 Installation Manual

User’s Guide
http://www.omega.com
e-mail: info@omega.com
PX750
Pressure Transmitter
OMEGAnet® On-Line Service Internet e-mail http://www.omega.com info@omega.com
Servicing North America:
USA: One Omega Drive, Box 4047 ISO 9001 Certified Stamford, CT 06907-0047 Tel: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar
Laval (Quebec) H7L 5A1 Tel: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca
For immediate technical or application assistance:
USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGASM Customer Service: 1-800-622-2378 / 1-800-622-BESTSM Engineering Service: 1-800-872-9436 / 1-800-USA-WHENSM TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA Mexico and Latin America: Tel: (95) 800-826-6342 FAX: (95) 203-359-7807
En Espan˜ol: (95) 203-359-7803 e-mail: espanol@omega.com
Servicing Europe:
Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands Tel: (31) 20 6418405 FAX: (31) 20 6434643
Toll Free in Benelux: 0800 0993344
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Toll Free: 0800-1-66342 e-mail: czech@omega.com France: 9, rue Denis Papin, 78190 Trappes Tel: (33) 130-621-400 FAX: (33) 130-699-120 Toll Free in France: 0800-4-06342
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e-mail: info@omega.de United Kingdom: One Omega Drive, River Bend Technology Centre ISO 9002 Certified 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: info@omega.co.uk
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.
TableofContents
SECTION1Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Models Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Using this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
SECTION2Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Load Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
SECTION3CommissioningtheSmartTransmitter
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Fast key sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Configure the Analog Output Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Setting Process Variable Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Reranging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Setting the Output Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Setting Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Calibrate the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Digital Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Calibrate the 4–20 mA Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Digital to Analog Converter Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
EN
iii
EN
SECTION4CommissioningtheAnalogTransmitter
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Setting the EZ/SZ Jumper Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjusting for Zero and Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Adjusting Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Adjusting Linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
SECTION5Troubleshooting
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
SECTION6ReferenceData
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
APPENDIXAHART®Communicator
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
iv
SECTION
1
Introduction
OVERVIEW
This section outlines the models covered and the organization of this manual.
The following performance limitations may inhibit efficient or safe operation. Critical applications should have appropriate diagnostic and backup systems in place.
Pressure transmitters contain an internal fill fluid. It is used to transmit the process pressure through the isolating diaphragms to the pressure sensing element. In rare cases, oil leak paths in oil-filled pressure transmitters can be created. Possible causes include: physical damage to the isolator diaphragms, process fluid freezing, isolator corrosion due to an incompatible process fluid, etc.
A transmitter with an oil fill fluid leak can continue to perform normally for a period of time. Sustained oil loss will eventually cause one or more of the operating parameters to exceed published specifications while a small drift in operating point output continues. Symptoms of advanced oil loss and other unrelated problems include:
Sustained drift rate in true zero and span or operating point output or both
n
Sluggish response to increasing or decreasing pressure or both
n
Limited output rate or very nonlinear output or both
n
Change in output process noise
n
Noticeable drift in operating point output
n
Abrupt increase in drift rate of true zero or span or both
n
Unstable output
n
Output saturated high or low
n
EN
MODELSCOVERED
This manual provides basic installation, commissioning, and troubleshooting information for the following PX750
Model PX750 - Differential Pressure Transmitter
measures differential pressure from 2 inH
Model PX750 - Gage Pressure Transmitter
measures gage pressure from 2 inH
Pressure Transmitters:
O to 1,000 psi (0.497 to 6895 kPa).
2
O to 1,000 psi (0.497 to 41369 kPa).
2
1-1
EN
Model PX750– Alphaline Draft Range Differential Pressure Transmitter
designed for monitoring low pressure flow rates with positive and/or negative static pressure capabilities and 0–½ to 0–6 inH
O rangeability.
2
USINGTHISMANUAL
This manual is designed to assist in basic installation and operation of Model PX750 Pressure Transmitters.
Section 2 Installation
provides a flowchart outlining installation procedures and installation wiring diagrams.
Section 3 Commissioning
provides a description of common commissioning tasks for the Model PX750 Smart Pressure Transmitter.
Section 4 Commissioning
provides a description of common commissioning tasks for the Model PX750 Analog Pressure Transmitter.
Section 5 Troubleshooting
provides basic troubleshooting techniques for common diagnostic messages associated with the transmitter and the communicator.
Section 6 Reference Data
provides range tables, a typical model structure, and bolt torque specifications for Model PX750 Transmitters.
Appendix
contains menu tree and fast key sequence for the HART Communicator.
1-2
SECTION
2
Installation
OVERVIEW
This section contains a flowchart in Figure 2-1 and wiring diagrams in Figures 2-2 through 2-5 to guide you to a successful Model PX750 installation. Shielded cable should be used for best results in electrically noisy environments.
Failure to follow safe installation guidelines can cause death or serious injury. Please review the following safety messages before installing a Model PX750 Pressure Transmitter.
To avoid output shifts in critical applications, do not plug the low side with a solid plug.
To avoid process leaks, install and tighten all four flange bolts before applying pressure, or
process leakage may result. Attempting to remove the flange bolts while the transmitter is in service may cause process fluid leaks.
To avoid explosions, do not remove the instrument cover or make electrical connections in
explosive atmospheres when the circuit is alive. Make sure the instrument is installed in accordance with intrinsically safe or nonincendive field wiring practice.
To meet explosion proof requirements, make sure that both transmitter covers are fully
engaged.
EN
2-1
FIGURE 2-1. Installation Flowchart.
EN
CALIBRATE
Press Both Zero
andSpan Button
Simultaneously
Apply Zero Point
Pressure and
Press Zero Button
Apply Span Point
Pressure and
Press Span Button
A
START HERE
Using a
No Smart Analog
Communicator?
Yes
CONFIGURE
Set Units
Set
RangePoints
Set
Output Type
Set
Damping
A
Bench
Calibration?
Yes
Analog
or
Smart?
VERIFY
A
Apply Pressure
Within
Specifications?
No
Refer to
Troubleshooting
Section
No
Yes
B
ADJUST ANALOG
ZERO/SPAN
Apply 4 mA-point
Pressure and Turn
ZeroScrewto
Output 4 mA
Apply
20 mA-point
Pressure
Subtract Actual
Output from
Desired Output
Divide
Difference
by 5
Turn Span Screw
above or below Desired Output by Value in Last Step
FIELD
B
INSTALL
CheckJumper
or Switches
Mount
Transmitter
Wire
Transmitter
Power
Transmitter
Zero
Transmitter
Check for Leaks
2-2
RepeatSteps
until
Calibrated
B
DONE
WIRINGCONNECTIONS
Figure 2-2 shows wiring connections necessary to power a Model PX750 Transmitter and if smart, enable communications with a hand-held communicator. Shielded cable should be used for best results in electrically noisy environments.
NOTE
A resistance of at least 250 ohms must exist between the communicator and the power supply for communications.
FIGURE 2-2. Field Wiring Diagram.
+
Power Wires
Hand-Held
Communicator
(For Smart
Transmitters Only)
STANDARD TERMINAL BLOCK
EN
1151-G05D
+
Power Wires
OPTION CODE R1 TERMINAL BLOCK
2-3
1151-1151K05A
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