Thermocouple connected to the digital display instrument error processing method

Thermocouple is a commonly used thermometer table, widely used in the field of measuring temperature. Users in the use of thermocouple often lead to a lot of problems because of input error, so should be how to deal with these problems?

1. According to the digital display instrument wiring diagram wiring is correct, if the instrument after electrify, digital tube display meter race such as negative phenomenon, that access to the instrument of thermocouple & other; +” With & other; — ” Just need to change our caused by wrong. Thermocouple connected to the digital display instrument error processing method of

2. The above fault instrument of thermocouple down, switch to run next to normal the same degree, access to the instrument of thermocouple, after electrify, the original fault instrument digital tube display on the heating element temperature, thermocouple internal connection open circuit, replace the same type thermocouple. If still the status of the said above that instrument in the process of transportation, the input end of the instrument is damaged, to replace the instrument.

3. The defective thermocouple removed from the instrument, measured with a multimeter in ohms ( r) * 1 file, use multimeter thermocouple at both ends, two table stick to test if the multimeter display on resistance value is very big, thermocouple internal connection open circuit, replace the same type thermocouple. Or have a certain value, the instrument input has a problem, should replace the instrument.

4. The thermocouple compensating lead wires from the digital display instrument input to be removed, then the instrument with any wire thermocouple input terminal short circuit. On the electricity, instrument digital tube display value approximately at room temperature, thermocouple internal connection open circuit, the same type thermocouple should be changed. If still the status of the said above that instrument in the process of transportation, the input end of the instrument is damaged, to change the instrument.