Assistant Instrument Engineer Interview Questions and Answers

Yes, there are other analog signals.

• Analog signals are continuous and can have infinite values within a range.

• Examples of analog signals include voltage, current, temperature, pressure, and sound.

• Analog signals are typically represented by a continuous waveform.

• Analog signals can be converted to digital signals through analog-to-digital converters (ADCs).

4-20 mA signal is a current loop signal commonly used in industrial instrumentation to transmit analog signals.

• 4-20 mA signal is a type of analog signal used for transmitting process variables such as temperature, pressure, level, etc.

• The signal represents the measured value as a current ranging from 4 mA to 20 mA.

• The 4 mA represents the lowest value or zero scale, while 20 mA represents the highest value or full scale.

• The signal is typically used because it is less susceptib...read more

A transmitter converts physical signals into a standardized output for monitoring and control in various applications.

• Transmitter types include pressure, temperature, and flow transmitters.

• They convert analog signals (like voltage) into digital signals for processing.

• Commonly used in industrial automation for process control.

• Examples: RTD temperature transmitters, pressure transmitters using piezoelectric sensors.