4.
Activate
Select
to apply the offset, and wait for a few seconds while the calibration
process is performed.
If the calibration succeeded, the calculated density offset is displayed.
If the calibration failed,
Density Offset
is reset to the original value.
•
Verify your laboratory reference value.
•
Ensure that your process was stable during the entire procedure.
•
Repeat the calibration.
5.
Activate
Scroll
to view the referred density value.
•
For concentration measurement,
Referred Density (Concentration)
is displayed.
•
For API referral,
Referred Density (API)
is displayed.
6.
To exit the calibration, activate
Scroll
, then activate
Select
.
9.3.2
Perform density offset calibration using ProLink III
Density offset calibration is used to verify or adjust the value of
Density Offset
.
Density Offset
is
always added to the measured density value after the density meter factor is applied, and
before other processing is performed.
The default value of
Density Offset
is 0.
Restriction
Density offset calibration is available only when API referral or concentration measurement is
enabled on your meter. If neither of these is enabled,
Density Offset
must be entered manually.
Tip
Density offset calibration is the preferred method for calculating a density offset, because the
procedure automatically corrects the data to reference temperature and reference pressure. If this
procedure is available on your device, use it and do not set
Density Offset
manually.
Prerequisites
Ensure that your process is stable during the calibration procedure. Minimize variation in
density, temperature, flow rate, and fluid composition. Minimize aeration.
If concentration measurement is enabled on your meter, ensure that
Active Matrix
is set to
the matrix that you want to calibrate.
Following the procedures defined in ASTM 1298 or API 555, obtain a laboratory reference
value for the density of your process fluid at reference temperature and reference
pressure.
Procedure
1.
Navigate to the Density Offset Calibration wizard:
Device Tools
>
Calibration
>
Density
Offset
>
Density Offset Calibration
.
Measurement support
Configuration and Use Manual
125
Содержание CDM100M
Страница 8: ...Getting Started 2 Micro Motion Compact Density Meters CDM ...
Страница 12: ...Before you begin 6 Micro Motion Compact Density Meters CDM ...
Страница 20: ...Configuration and commissioning 14 Micro Motion Compact Density Meters CDM ...
Страница 26: ...Introduction to configuration and commissioning 20 Micro Motion Compact Density Meters CDM ...
Страница 110: ...Integrate the meter with the control system 104 Micro Motion Compact Density Meters CDM ...
Страница 116: ...Operations maintenance and troubleshooting 110 Micro Motion Compact Density Meters CDM ...
Страница 124: ...Transmitter operation 118 Micro Motion Compact Density Meters CDM ...
Страница 194: ...Using the transmitter display 188 Micro Motion Compact Density Meters CDM ...
Страница 208: ...Using ProLink III with the transmitter 202 Micro Motion Compact Density Meters CDM ...
Страница 218: ...Concentration measurement matrices derived variables and process variables 212 Micro Motion Compact Density Meters CDM ...
Страница 219: ...Concentration measurement matrices derived variables and process variables Configuration and Use Manual 213 ...