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transmitter is consistent with the actual output loop current;
◆ Provides adjustment of D/A zero point (4mA) and D/A gain (20mA): you can press the screen to get the current
value for adjustment
(4) Sensor trim
Sensor trim is the adjustment of the PV process variable of the transmitter, which usually contains one or two
adjustment points (low point and high point). Some transmitters do not support sensor trim operations (whether
the transmitter supports sensor trim, please refer to the transmitter's manual).
◆ Lower limit adjustment
Support setting PV unit and adjustment point value
；
Note: pressure module needs to be connected
。
1) Manually control the pressure of the transmitter through an external source. After the pressure
measurement is stable, press the Acquire key to directly obtain the standard value or directly press the
number key to manually input the value to be adjusted;
Note: Some transmitters do not need to input the adjustment value, the transmitter automatically uses the
upper and lower limits of the range (the lower limit of the range corresponds to the low point adjustment
value, and the upper limit of the range corresponds to the high point adjustment value) as the adjustment
value. In this case, any value can be input
；
2) Execute the trim (Trim) command. After successful, the PV value will change according to the executed trim
point value.
◆ Upper limit adjustment
The operation process is the same as that of lower limit adjustment.
◆ Restore factory
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