93
Reference Manual
00809-0100-4803, Rev GA
Operation and Maintenance
September 2017
Operation and Maintenance
To correct for mounting position effects on transmitters equipped with an absolute static pressure
sensor, perform a lower sensor trim. This is accomplished by selecting the
Lower Sensor Trim
button
and following the on-screen prompts. The lower sensor trim function provides an offset correction
similar to the zero trim function, but it does not require a zero-based input.
Upper and lower sensor trim
To perform a Static Pressure Full Sensor Trim, perform the following procedure:
1. Select the
Lower Sensor Trim
button and follow the on-screen prompts.
2. Select the
Upper Sensor Trim
button and follow the on-screen prompts.
Note
It is possible to degrade the performance of the transmitter if the full sensor trim is done improperly or
with inaccurate calibration equipment. Use a pressure input source that is at least three times more
accurate than the transmitter and allow the pressure input to stabilize for ten seconds before entering
any values.
Recall factory trim
The
Recall Factory Trim
button will restore the transmitter to the original factory characterization
curve. The
Recall Factory Trim
button can be useful for recovering from an inadvertent zero trim or
inaccurate pressure source.
When the recall factory trim function is used, the transmitter’s upper and lower trim values are set to the
values configured at the factory. If custom trim values were specified when the transmitter was ordered,
the device will recall those values. If custom trim values were not specified, the device will recall the
upper and lower sensor limits.
Last static pressure sensor trim
The current upper and lower trim points can be seen under the
Last Static Pressure Sensor Trim Points
heading.
Calibration type
The calibration type drop-down menu allows the user to note the type of device last used to calibrate the
sensor (either Differential, Gage, or Absolute). This field does not affect the calibration of the device.
4.3.5
Process temperature sensor calibration
The
Temperature Calibration
tab allows the user to perform a sensor trim and configure the sensor
matching of a process temperature sensor, see
Mass and energy flow Fast Keys
1, 2, 5, 5
Direct process variable output Fast Keys
1, 2, 4, 5
Содержание 3051S Series
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