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104 Transmitter Configuration and Use: Series 1000 and 2000 Transmitters
Pressure Compensation, Temperature Compensation, and Polling continued
9.2.2 Pressure correction factors
When configuring pressure compensation, you must provide the flow calibration pressure—the
pressure at which the flowmeter was calibrated (which therefore defines the pressure at which there
will be no effect on the calibration factor). Micro Motion calibrates flowmeters at the factory to
National Institute of Standards and Technology (NIST) standards (20 psi).
Two additional pressure correction factors may be configured: one for flow and one for density. These
are defined as follows:
• Flow factor – the percent change in the flow rate per psi
• Density factor – the change in fluid density, in g/cm
3
/psi
Not all sensors or applications require pressure correction factors. For a discussion of pressure effect,
see the EXPERT
2
system at www.expert2.com. For the pressure correction values to be used, obtain
the pressure effect values from the product data sheet for your sensor, then reverse the signs (e.g., if
the pressure effect is 0.000004, enter a pressure correction factor of –0.000004).
9.2.3 Pressure measurement unit
The default measurement unit for pressure is
PSI. In other words, the transmitter
expects to receive pressure data in PSI.
If you will use a different pressure measurement unit, you must configure the
transmitter to use that measurement unit. To access the pressure measurement unit
parameter, see the menu flowcharts for your transmitter.
See Table 9-1 for a complete list of pressure measurement units.
Table 9-1 Pressure measurement units
Pressure unit
Unit descriptionProLink II Communicator
In Water @ 68F inH2O Inches water @ 68 °F
In Mercury
@ 0C inHg Inches mercury @ 0 °C
Ft Water
@ 68F ftH2O Feet water @ 68 °F
mm Water
@ 68F mmH2O Millimeters water @ 68 °F
mm Mercury
@ 0C mmHG Millimeters mercury @ 0 °C
PSI psi Pounds per square inch
bar bar Bar
millibar mbar Millibar
g/cm2 g/Sqcm Grams per square centimeter
kg/cm2 kg/Sqcm Kilograms per square centimeter
pascals Pa Pascals
Kilopascals kPa Kilopascals
Torr
@ 0C torr Torr @ 0 °C
atms atms Atmospheres
• Model 1500 AN
• Model 1700 AN
• Model 1700 IS
• Model 2500 CIO
• Model 2700 AN
• Model 2700 IS
• Model 2700 CIO
- Micro Motion 1
- Series 1000 and 1
- Series 2000 Transmitters 1
- Contents 5
- Chapter 1 11
- Before You Begin 11
- Before You Begin continued 13
- Topic Document 13
- Term Definition 13
- Item Configuration data 15
- Chapter 2 17
- Using the Transmitter Display 17
- –8.100E 5 19
- Chapter 3 21
- Poll button in the Connect 26
- 1 and 2, or to the 26
- Connect to Device 32
- Chapter 4 33
- 375 Field Communicator 33
- Chapter 5 39
- Flowmeter Startup 39
- Flowmeter Startup continued 40
- 5.5.3 Zeroing with ProLink II 50
- Chapter 6 53
- Sensor type 54
- T- S er ie s O t he r 54
- Newer tag Older tag 55
- Flow FCF X.XXXX FT X.XX 56
- Terminals 58
- Default Process 58
- Mass flow unit 60
- Volume flow unit 61
- ProLink II code 69
- Communicator 69
- Polarity 75
- Output power 75
- Description 75
- Assignment ProLink II code 77
- Using the Transmitter 79
- Chapter 7 79
- • Model 1700 AN 84
- • Model 1700 IS 84
- • Model 2700 AN 84
- • Model 2700 IS 84
- • Model 2700 CIO 84
- Scroll optical switch 85
- Select optical switch 85
- Function name Communicator 86
- ProLink II 86
- ProLink 87
- Totalizer Control 87
- With a Communicator 88
- Chapter 8 89
- Optional Configuration 89
- Table 8-1 Configuration map 90
- Special 92
- • Model 2500 CIO 93
- Variable Description 94
- Cutoff type Default Comments 96
- Example 1 100
- Example 2 100
- Example 3 101
- Informational panel of the 102
- Status window 102
- Scroll to view process 104
- Max Int. Totalizers stop 106
- Parameter 109
- Series 1000 Series 2000 110
- Process variable 110
- PV SV TV QV PV SV TV QV 110
- Parameter Description 111
- Chapter 9 113
- Compensation, and Polling 113
- Pressure unit 114
- Static pressure 116
- Polled Var 1 119
- Chapter 10 121
- Troubleshooting 121
- Troubleshooting continued 122
- Section Topic 122
- Symptom Cause Possible remedy 132
- Pickoff value 141
- Cause Possible remedy 141
- Test terminal pair 146
- Colors Numbers 146
- Possible cause Solution 147
- Appendix A 151
- Default Values and Ranges 151
- Appendix B 155
- Appendix C 167
- Calibrating the Transmitter 167
- Appendix D 175
- Name Description 176
- Available process variables 178
- Slope and offset 181
- Appendix E 183
- Other configuration options 185
- Preferences menu 187
- Figure E-4 Communicator menus 188
- Appendix F 193
- Figure F-4 Communicator menus 197
- Appendix G 203
- Transmitters 203
- Figure G-4 Communicator menus 207
- Enter password if required 212
- Appendix H 219
- Figure H-4 Communicator menus 223
- Appendix I 235
- Configuration 237
- Figure I-4 Communicator menus 239
- On-Line Menu 240
- 3 Basic Setup 240
- 4 Detailed Setup 240
- 5 Review 243
- Appendix J 251
- Select to disable 252
- Select to enable 252
- Index continued 256
- *20001715* 264
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