The Ultimate Calibration Services Calibration and Service Engineer Interview Questions and Answers

RTD stands for Resistance Temperature Detector. It operates on the principle that the electrical resistance of a metal changes with temperature.

• RTD is a temperature sensor made of a pure metal or a metal alloy with a known resistance-temperature relationship.

• As the temperature changes, the resistance of the RTD element also changes.

• The relationship between resistance and temperature is typically linear, making RTDs hig...read more

A proximity sensor is a sensor that detects the presence or absence of an object within a certain range without physical contact.

• Proximity sensors use various technologies such as infrared, ultrasonic, capacitive, or inductive to detect objects.

• They are commonly used in smartphones for touchless control, automatic faucets, and industrial automation.

• Proximity sensors can be used to detect the presence of objects, measur...read more