
Using ProLink
®
Software with Micro Motion
®
Transmitters
75
Configure Menu: Characterize
continued
Flow calibration factor
Configure Menu:
Transmitter Outputs
Configure Menu:
Transmitter Information
Configure Menu: EventsView Menu: Status
Configure Menu:
Characterize
Configure Menu:
Transmitter Variables
3. Perform this step only if the following conditions are true:
• The transmitter is an RFT9739 with software version 2.4 or higher
(all RFT9739 transmitters shipped after April 1995 have software
version 2.4 or higher); and
• The sensor is an older Model D or DL sensor, with a serial
number of 87263 or lower (shipped before November 1986)
a. Contact the factory to identify the sensor's RTD type.
b. If the sensor has a copper RTD, modify the temperature
coefficient from step 2, by replacing the decimal point with the
letter "c". For example, change "5.13" to "5c13".
Example:
Given:
A D100 sensor with 316L stainless steel flow tubes, originally
calibrated with an RE-01, has a sensitivity factor of 44.5.
Problem:
The RE-01 has been replaced by an RFT9739. A flow
calibration factor must be programmed into the new transmitter.
Solution:
The first five digits of the flow calibration factor are calculated
from the RE-01 flow sensitivity factor, as follows:
The appropriate value for a D100 sensor with 316L stainless steel flow
tubes is:
5.13
The complete flow calibration factor is
67.0625.13
CAUTION
Failure to properly characterize a Model D or DL
sensor with a copper RTD will cause
measurement error.
If the sensor has a copper RTD, the flow calibration
factor programmed into the transmitter must be
modified as described below, to ensure accurate flow
measurement.
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