13 Measurement support
Topics covered in this chapter:
•
Perform the Known Density Verification procedure
•
Configure temperature compensation
•
Adjust temperature measurement with Temperature Offset or Temperature
Slope
•
Perform temperature calibration
•
Adjust concentration measurement with Trim Offset
•
Adjust concentration measurement with Trim Slope and Trim Offset
•
Set up user-defined calculations
13.1 Perform the Known Density Verification
procedure
The Known Density Verification procedure is used to verify that the meter's current
operation matches the factory baseline. If the meter passes the test, the meter does not
have any physical problems such as denting, bending, twisting, erosion, or corrosion.
Restriction
Known Density Verification is not available on the Fixed Outputs version (Transmitter Output
Options, code E).
Prerequisites
Check calibration integrity inline first by running a known gas through the system using
the factory measurements. Verify that the reported density is correct. If it is not correct,
continue with a KDV check and the following prerequisites.
1. Minimize variation in ambient temperature.
2. Eliminate or minimize vibration.
3. Power down the meter.
4. Use a vacuum pump to empty the meter. Pull a vacuum inside the meter to a
maximum pressure of 0.2 Torr.
5. Power up the meter.
13.1.1
Perform the Known Density Verification procedure using
ProLink III
1. Read the Prerequisites in Section 13.1 if you have not done so already.
2. Choose Device Tools > Diagnostics > Known Density Verification.
Measurement support
Configuration and Use Manual 127
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