Smart pressure transmitter line zero migration

Smart pressure transmitter sensor part includes: capacitive sensor, measuring diaphragm detection circuit, temperature sensor and temperature compensation circuit and other components; intelligent electronic board part includes: microcomputer controller and peripheral circuit, complete pressure signal to 4 ~ 20mAdc Conversion. Used to measure the pressure of a liquid, gas, or vapor, and then convert the pressure signal to a 4-20 mADC signal output.

The zero pressure migration steps of the smart pressure transmitter are as follows:

(1) Adjust the measuring range to the required value before the migration;

(2) According to the measurement of the lower limit of the zero migration, input the lower limit corresponding pressure, with zero adjustment potentiometer adjustment, so that the output is 4mA;

(3) Review the full scale and fine tune if necessary;

(4) If there is a large amount of migration, the transmitter's transfer switch (connector) must first be switched to the positive or negative transfer position (determined by the migration direction), then the lower limit of the measurement pressure is added, and the zero point is used to adjust the potentiometer. Adjust the output to 4MA;

(5) Repeat step 3.

Smart pressure transmitter

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