Sensors Quiz: Types and Functions

A device that converts changes in a physical or chemical process into a usable signal, typically electrical. It acts as an information extractor, converting a physical quantity into a different electrical quantity that can be used for measurement.

The input to a sensor, which is the physical quantity being measured. Examples include position, pressure, temperature, level, or displacement.

The output signal produced by a sensor, which is typically an electrical signal that can be processed by other instruments. It can be analog, digital, or TOR (on/off).

A sensor that requires an external power source to operate. It works by changing its electrical impedance (resistance or capacitance) in response to the measured variable, which can then be detected by a circuit.

A sensor that generates its own electrical signal as a result of the measured variable. It typically works by harnessing a physical effect that converts the measured quantity into electrical energy.

A type of sensor that converts a physical input into a simple digital output, usually a '0' or '1' representing 'on' or 'off'.

A device that processes the electrical signal from a sensor, modifying it to be compatible with a measurement system or a control unit. It can amplify, filter, or convert the signal.

A device that combines a sensor and a conditioner to produce a standardized output signal that can be transmitted over long distances for use in industrial control systems. It essentially translates the sensor's output into a usable signal for the control system.

The electrical output of a sensor, which is typically at a low voltage or current level (e.g., a few millivolts).

The electrical output of a transmitter, which is standardized and can be transmitted over long distances (e.g., 4-20 mA).

A type of transmitter that uses only two wires for both power and signal transmission, commonly used in industrial settings due to its simplicity and cost-effectiveness.

A type of transmitter that has a dedicated power supply and a second wire for the signal output as a separate circuit, offering better isolation and accuracy.

A type of transmitter that uses a separate power supply and two wires for the input and output signals, offering even greater isolation and accuracy.

The difference between the highest and lowest values that a sensor can measure.

The difference between the actual zero point of a sensor and the value that corresponds to zero output signal.

The ratio of the change in output signal to the corresponding change in the measured variable.

The maximum error that a sensor can have in its measurement.

A type of sensor that measures temperature based on the change in resistance of a platinum wire, with a resistance of 100 ohms at 0°C.

The process of adjusting a sensor's output signal to match a specific measurement range or calibration.

A measure of how consistently a sensor produces the same output for the same input over time.

The ability of a sensor to detect small changes in the measured variable.

A system or component that provides information about a process or system, enabling monitoring and control.

The ability of a sensor to accurately measure a wide range of values.

The maximum amount of time a sensor takes to respond to a change in the measured variable.

The ability of a sensor to maintain its accuracy and performance over a long period.

The ability of a sensor to withstand environmental conditions without being significantly affected.

The process of analyzing the relationship between the input and output of a sensor to determine its performance.

The ability of a sensor to be used for a specific purpose or application.