Digital display deviceWhen used in conjunction with various sensors and transmitters, the digital display instrument can measure, display, alarm control, transmit output, data acquisition, and communication of industrial process parameters such as temperature, pressure, liquid level, flow rate, and weight.

.

Unstable display of numbers (jumping)

01) Poor grounding of instruments;

02) Unstable power supply;

03) Power transformer shielding open circuit;

04) There are faults in the reference voltage and negative power supply in the table;

05) Poor contact of potentiometer;

06) 7107 is damaged;

07) Poor power filtering and voltage regulation;

The room temperature compensation circuit and reference power supply have basic defects;

09) The automatic zeroing circuit is damaged;

10) There is virtual soldering or poor contact in the connections, connectors or components within the table;

11) The noise inside the integrated operational amplifier is too high.