APT3500 Smart Pressure Transmitter
Operation Manual M3500-EO1G
56 DUON System Co., Ltd.
Figure 5-3 shows the above Calibration Procedure.
Figure 5-3. Calibration Procedure
5.9.1 Sensor Trim
The Sensor Trim the transmitter sensor input signal convert A/D to lead and how it interprets the
values which it inputs with digital the contents of such interpretation and it is regarding to change
is connected actually in the sensor which in order to correspond.
There are three waysto trim the sensor: Sensor zero trim, full trim and zero adjustment.
Sensor zero trim is a one-point adjustment typically used to compensate for mounting position
effects or zero shifts caused by static pressure.
Two point trim is a full sensor tirm, in which two accurate end-point pressure are applied (equal
to or greater than the range values), and all output is linearized between them. You should
always adjust the low trim value first to establish the correct offset.