Thermal resistance input fault how to solve?

Thermal resistance input fault how to solve?

1。 Instrument based on the wiring diagram for the correct wiring after electrify, instrument display thermal resistance index number first, and then display instrument range domain, digital tube display set temperature measuring instrument discharge again, digital tube display on the meter measuring temperature. The odds on the instrument of the digital tube display is not heating element temperature, but is 'OVER', '0000' or '000', etc. , explain the instrument output parts fault occurs, inspection should be done as follows:

2. The foregoing instrument to go up and down the heat resistance of the trouble, change next to the functioning of the same index number of instrument access heat resistance, good in electricity, the original problem on the instrument digital tube display temperature, explain the original external connection open circuit, thermal resistor should be a change in heat resistance. If still mentioned above, explain the instrument in the transport process, the output of the meter is damaged, to swap the instrument.

3。 The above problem instrument thermal resistance demolition, the multimeter in measuring ohms ( R) * 1 file, use multimeter two table stick to thermal resistance of different colors of two wires. If the PT100 resistance value of about 100 ohms. If CU50 about 50 ohm resistance of thermal resistance. If the resistance is very big, explain thermal resistance external connection open form, a change in the same type heat resistance. On the other hand, explain the Issue (instrument output parts, The problem) To swap the instrument.

4。 Instrument operation process, the temperature of the instrument on the digital tube display and the measured temperature is a little error, under the condition of test method.

5。 On the market to purchase thermal resistance of the material is not pure, have impurities, ohmic value and temperature of linear error happens.

6。 If you want to correct a certain temperature point ohm value and temperature error, available measurement correction 'rt' parameters of the instrument to adjust.

7。 Wiring correct instrument during operation, if the instrument on the measuring temperature and practice of digital tube display the status of the measuring temperature difference is too big, explain instrument index number and the heat resistance at http://www. wuxiyibiao。 Com/index number to make a mistake.