Additel 762, User Manual

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zeroing interface.

Ensure that the present measured value adequately approaches zero; otherwise, it may cause zeroing to fail.
(3) Current regulation

Adjust the proportion of current output of the transmitter, to make its AO value consistent with the actually output
loop current.

Provide regulation of the D/A zero (4mA) and D/A gain (20mA). You can press the screen to acquire the present
value, and press the key to perform regulation.
(4) Sensor trim
Sensor trim is to adjust the PV process variable of the transmitter, generally including one or two trim points (lower
point and upper point). Some transmitters do not support the sensor trim operation (as for whether the transmitter
supports sensor trim, please refer to the user manual of transmitter).
1)Lower trim
Support setting the PV unit and trim point value. You can select two pressurization methods, internal and external
pressurization. Press the key to enter the execution interface.
Note: External pressurization requires an external pressure module.
 Internal pressure control: Select high-pressure and low-pressure modules, to automatically output the pressure
of the trim points. Wait for the pressure to stabilize and press the "Get" key to directly acquire the value, or
manually enter the trim values.
 External pressure control: Manually control the pressure of transmitter through an external source. Wait for the
pressure to stabilize and press the "Get" key to directly acquire the value, or manually enter the trim values.
Note: Some transmitters may not allow selectable trim values, and automatically use the upper and lower range