Automation and Control Engineer Interview Questions and Answers

The minimum conductivity required for the operation of a magnetic flow meter is typically around 5 µS/cm.

• Minimum conductivity needed is around 5 µS/cm

• Higher conductivity levels can cause measurement errors

• Lower conductivity levels may require special calibration or electrodes

• Conductivity can be affected by factors like temperature, pressure, and fluid composition

Level instruments commonly used to measure bulk solids include radar level transmitters, ultrasonic level transmitters, and capacitance level sensors.

• Radar level transmitters are often used for measuring bulk solids due to their ability to penetrate dust, vapor, and foam. They are non-contact and provide accurate measurements.

• Ultrasonic level transmitters are also commonly used for measuring bulk solids. They work by sending ultrasonic pulses and measuring the time it takes f...read more