Hindustan Zinc Instrument Engineer Interview Questions, Process, and Tips

RTD measures temperature using resistance while thermocouple uses voltage difference.

• RTD has higher accuracy and stability than thermocouple.

• RTD is more expensive than thermocouple.

• RTD is suitable for precise temperature measurement while thermocouple is better for high temperature measurement.

• RTD has a linear relationship between resistance and temperature while thermocouple has a non-linear relationship.

• Examples of R...read more

Correct temperature indication by RTD can be verified using multimeter.

• Check the resistance value of RTD using multimeter and compare it with the standard resistance-temperature chart.

• Ensure that the RTD is properly connected to the measuring instrument and there are no loose connections.

• Perform a calibration check periodically to ensure accurate temperature measurement.

• Use a reference thermometer to cross-check the te...read more

Yes, 0-10 V can be used in PLC as an analog input or output signal.

• PLCs typically have analog input and output modules that can handle 0-10 V signals.

• The signal can be used to measure or control variables such as temperature, pressure, or flow.

• The resolution and accuracy of the signal depend on the PLC and the analog module used.

• Some PLCs may require additional scaling or conversion of the signal to match the desired r...read more

Dry wiring refers to wiring without any external protection, while wet wiring involves the use of protective coatings or materials.

• Dry wiring is typically used in low-risk environments where there is no chance of moisture or other contaminants damaging the wiring.

• Wet wiring is used in high-risk environments where moisture or other contaminants are present, such as in chemical plants or outdoor installations.

• Examples of...read more