Hindustan Urvarak & Rasayan Assistant Instrument and Control Engineer Interview Questions and Answers

Field instrumentation includes various devices used to measure and control process variables in industrial settings.

• Field instrumentation refers to devices such as pressure transmitters, temperature sensors, flow meters, and level gauges used to monitor and control process variables.

• Control valves are used to regulate the flow of fluids in a system based on signals from instrumentation devices.

• Accessories for control v...read more

Flow meters are devices used to measure the flow rate of fluids or gases in a system.

• Differential pressure flow meters (e.g. orifice plate, venturi tube)

• Positive displacement flow meters (e.g. piston, gear, nutating disc)

• Velocity flow meters (e.g. turbine, vortex, electromagnetic)

• Mass flow meters (e.g. Coriolis, thermal, ultrasonic)

Types of level transmitters include ultrasonic, radar, capacitance, and differential pressure.

• Ultrasonic level transmitters use sound waves to measure the distance between the sensor and the liquid surface.

• Radar level transmitters use electromagnetic waves to determine the level of the liquid.

• Capacitance level transmitters measure the change in capacitance between two electrodes as the liquid level changes.

• Differential...read more