![9.2.2Pressure correction factors](/images/new-backgrounds/15628/15628183x1.webp)
Pressure Compensation and Temperature Compensation
9.2.2Pressure 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). Enter 20 PSI unless the calibration document for your sensor indicates a different calibration pressure.
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/cm3/psi
Not all sensors or applications require pressure correction factors. 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
9.2.3Configuration
To enable and configure pressure compensation:
•With ProLink II, see Figure
•With a DeviceNet tool, see Figure
Figure
Enable |
View > |
Preferences |
Enable External Pressure |
Compensation |
Apply |
Set measurement unit(1) |
ProLink > |
Configuration > |
Pressure |
Enter Pressure units |
Apply |
Configure |
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| Configuration > |
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| Pressure |
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| Enter Flow factor |
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| Enter Density factor |
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| Enter Cal pressure |
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| Apply |
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| Use static |
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No | pressure value? | Yes |
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Set up output | Enter External |
(1)Pressure measurement unit must be configured to match pressure unit used by external device. See Section 6.3.
(2)See Section 9.4.
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| Done |
84 | Micro Motion® Model 2400S Transmitters for DeviceNet™ |