Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-10-17
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-10-17: Discussion question: 268. What are the common faults that can occur in thermal resistors during use?
1. Indications of high and low values (oxygenation or corrosion at the terminals, possible breaks in the water supply lines or circuits)； 2. Display the highest or lowest value (either damaged by water, disconnected, or with a short circuit in the cable)
It’s also possible that the precision at the time of manufacture is poor, resulting in large deviations, especially when the products are shipped without meeting national standards
1. Short circuit or grounding between the resistive wires of the thermistor. 2. Break in the resistive wires of the thermistor. 3. Water accumulation inside the protective sleeve. 4. Open circuit in the wiring connecting the resistance element to the junction box
(1) Short circuit or grounding between the resistance wire strands of the thermistor. (2) Break in the resistance wire strands of the thermistor. (3) Water accumulation inside the protective sleeve. (4) Open circuit in the wiring connecting the resistance element to the junction box
Short circuit or grounding between the resistance wire strands of the thermoresistor； The resistance wire of the thermistor is broken ； There is water accumulation inside the protective sleeve ； Common faults include open circuits in the wires leading from the resistive element to the junction box.
1. Short circuit or grounding between the resistive wires of the thermistor. 2. Break in the resistive wires of the thermistor. 3. Water accumulation inside the protective sleeve. 4. Open circuit in the wiring connecting the resistance element to the junction box
(1) Short circuit or grounding between the resistive wires of the thermistor. (2) Break in the resistive wires of the thermistor. (3) Water accumulation inside the protective sleeve. (4) Open circuit or oxidation in the wiring connecting the resistance element to the junction box. (5) Increased measurement error
1. Short circuit or grounding between the resistive wires of the thermistor. 2. Break in the resistive wires of the thermistor. 3. Water accumulation inside the protective sleeve. 4. Open circuit in the wiring connecting the resistance element to the junction box.
This post was last edited by h20090630 on 2020-10-17 at 22:11: 1. Oxidation of the thermal resistor, resulting in deviations in its resistance value; 2. Breakage of the wire in the thermal resistor; 3. Accumulation of liquid inside the protective sleeve. 4. The wire connecting the resistance element to the junction box is broken. 5. There is a short circuit or ground connection between the resistive wires of the thermistor.