Bapco Energies Instrumentation Technician Interview Questions and Answers

Thermocouples are color-coded for easy identification based on the type of metal used in the wires.

• Different types of thermocouples are identified by different color combinations on the wires

• For example, Type K thermocouples have a yellow(+) and red(-) wire combination

• Type J thermocouples have a white(+) and red(-) wire combination

• Color coding helps technicians quickly identify the type of thermocouple being used

The gap while fixing the vibration probes refers to the distance between the probe tip and the target surface.

• The gap should be carefully adjusted to ensure accurate readings.

• Common gap sizes range from 0.5mm to 2mm depending on the application.

• Using shims or spacers can help maintain a consistent gap.

• Regularly checking and adjusting the gap is important for proper functioning of the probes.

Control valve gland packing is a sealing material used to prevent leakage around the valve stem. There are mainly two types of gland packing - compression packing and mechanical packing.

• Control valve gland packing is a sealing material placed around the valve stem to prevent leakage.

• Compression packing is made of materials like graphite, PTFE, or synthetic fibers and is compressed around the stem using a gland follower...read more