Gujarat State Petronet Instrumentation Technician Interview Questions and Answers

Instrumentation equipment refers to devices used to measure, control, and monitor various parameters in industrial processes.

• Instruments like pressure gauges, flow meters, and temperature sensors are commonly used in instrumentation.

• Control valves and actuators are used to regulate the flow of fluids or gases.

• Programmable Logic Controllers (PLCs) are used for automation and control of processes.

• Analytical instruments l...read more

A PLC panel wiring diagram is a visual representation of the electrical connections and components in a programmable logic controller panel.

• A PLC panel wiring diagram shows the layout and connections of various components such as power supplies, input/output modules, relays, and sensors.

• It helps technicians understand how the electrical signals flow within the panel and how different devices are interconnected.

• The diag...read more

A control valve is a device used to regulate the flow of fluid or gas in a process system.

• Control valves are commonly used in industries such as oil and gas, chemical, and power plants.

• They can be operated manually or automatically through an electrical or pneumatic signal.

• Control valves consist of a valve body, actuator, and positioner.

• They can control variables such as flow rate, pressure, temperature, and level.

• Exam...read more

A transmitter is a device used in instrumentation to convert a physical measurement into an electrical signal.

• Transmitters are commonly used in industries such as oil and gas, chemical, and power plants.

• They are used to measure variables such as pressure, temperature, flow rate, level, and pH.

• Transmitters typically consist of a sensing element, signal conditioning circuitry, and an output signal.

• The sensing element det...read more

Flow meters are devices used to measure the flow rate of a fluid or gas.

• Flow meters are commonly used in industries such as oil and gas, water treatment, and manufacturing.

• They can measure flow rates in various units such as liters per minute, cubic meters per hour, or gallons per minute.

• Different types of flow meters include electromagnetic, ultrasonic, turbine, and differential pressure flow meters.

• Flow meters can be...read more

To install a temperature transmitter, you need to properly mount the transmitter, connect the wiring, configure the settings, and test the transmitter.

• Mount the temperature transmitter in a suitable location near the temperature source.

• Connect the wiring according to the manufacturer's instructions, ensuring proper grounding.

• Configure the settings such as range, output signal, and calibration using the transmitter's di...read more

Various types of valves are used in chemical industries for different purposes.

• Gate valves are commonly used in chemical industries for on/off control of flow.

• Globe valves are used for regulating flow and controlling pressure.

• Ball valves are suitable for high-pressure applications and provide tight shut-off.

• Butterfly valves are used for throttling and controlling flow.

• Diaphragm valves are used for handling corrosive an...read more