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The causes of errors temperature temperature sensor

at higher or lower temperature measured medium temperature sensor output does not change, this kind of situation is mostly temperature problem of temperature sensor seal, may be due to temperature, temperature sensor is not sealed or accidentally when welding will be a small hole, welding temperature sensor that generally need to replace the temperature sensor shell to solve it. The output signal is not stable, the cause of the reason is that temperature source ability, temperature source skill is an unstable temperature, if the meter is not stable, that is the reason why the anti-interference ability of the instrument is not strong. Temperature sensor output error is big, because this kind of circumstance is more, may be to choose the temperature of the temperature sensor resistance wire wrong lead to range error, there are also can not to be temperature sensor calibration.

temperature sensor temperature adjustment problems

general temperature temperature sensors under the condition of normal use is not need to be adjusted, but we are considering various factors in the process of using, also is to adjust the temperature sensor to temperature, it is necessary. If you find your instrument can not work normally, instrument for more than 20 ma output current. Open circuit of sensor, due to the temperature sensor protection tube ( Isolation, to prevent the failure of the instrument) Temperature temperature sensors in most cases, the insulation resistance of degradation. If does not affect the instrument input short circuit work. Button to select the circuit, when the output current is less than 4 ma, instrument display is below zero.

the temperature and humidity temperature sensor instrument panel, and then click on 'the power of images. Initial resistance adjusting box, 100 Ω input circuit termination conditions, the rest of the input circuit loop.

W12157 resistance setting adjustments. 31 Ω, make 20 ma output ( 2) , adjust the potential 4 ma output W11, steps, until the good precision range, has been repeated.

standard square resistance, to 20 ma ma and 4 output, so as the second cycle, adjustment of step two, to adapt to the * * m W22 road second, and low potentiometer W21, short circuit to the rest of the input circuit.

standard resistance box, repeat steps 2 and won the third and fourth cycle. Respectively, all four W41 adjustment cycle is complete, W42, W31, W32 adjust potentiometer.

temperature temperature sensor applications

used in the petrochemical industry is more

petrochemical industry are need to use the temperature sensor, the temperature is because it is in use process need to effectively control the temperature of the site, once the temperature is not reasonable, or abnormal situation, need to be timely and effective solution. Recommended when using can also take a look at the overall measurement way, of course also with other instruments are needed to use, can play a better role.

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