Rockman Industries Maintenance Fitter Interview Questions and Answers

There are several types of valves in instrumentation.

• Gate valve

• Ball valve

• Butterfly valve

• Globe valve

• Check valve

• Diaphragm valve

• Needle valve

• Plug valve

• Pressure relief valve

• Safety valve

PT, LT and LVDT are types of sensors used in engineering for measuring pressure, temperature and displacement respectively.

• PT stands for Pressure Transducer and is used to measure pressure in various applications such as hydraulic systems, engines, and pipelines.

• LT stands for Linear Transducer and is used to measure temperature in various applications such as engines, HVAC systems, and industrial processes.

• LVDT stands ...read more

Calibration of I/P converter involves adjusting the output pressure to match the input signal.

• Connect the I/P converter to a pressure source and a signal generator

• Adjust the input signal to the desired value

• Measure the output pressure and adjust it to match the input signal

• Repeat the process at different input signal levels to ensure accuracy

• Document the calibration results for future reference

A load cell is a transducer that converts force into an electrical signal. Calibration involves applying known loads and adjusting the output signal.

• Load cell measures force or weight

• It converts the force into an electrical signal

• Calibration involves applying known loads and adjusting the output signal

• Calibration can be done using a calibration machine or weights

• Calibration should be done regularly to ensure accurate r

Maintenance is the process of ensuring that equipment, machinery, and facilities are in good working condition.

• Regular inspection and repair of equipment

• Preventive maintenance to avoid breakdowns

• Replacing worn-out parts

• Cleaning and lubricating machinery

• Ensuring safety standards are met

• Maintaining records of maintenance activities

• Responding to emergency repairs

• Continuous improvement of maintenance processes

PM stands for Preventive Maintenance, MTTR is Mean Time To Repair, and MTBF is Mean Time Between Failures.

• PM is a proactive maintenance strategy that involves regularly scheduled maintenance to prevent equipment failure.

• MTTR is the average time it takes to repair a piece of equipment after a failure.

• MTBF is the average time between equipment failures.

• These metrics are important for measuring the effectiveness of mainte...read more