Loop Calibrator

A loop calibrator is a specific type of calibration instrument commonly used in process control and instrumentation. It is designed to calibrate, troubleshoot, and maintain current loops in various industrial applications. Current loops are commonly used in process control systems to transmit signals between sensors, transmitters, and controllers.

1. Current Measurement and Simulation: Loop calibrators can measure and simulate current signals. They are particularly useful for calibrating and testing instruments such as pressure transmitters, temperature transmitters, and flow meters that operate within a 4-20 mA current loop.
2. Voltage Measurement and Generation: In addition to current, loop calibrators may also measure and generate voltage signals. This is beneficial for calibrating devices that use voltage signals within a control loop.
3. Resistance Measurement: Some loop calibrators include the capability to measure and simulate resistance. This feature is useful for calibrating devices that incorporate resistance in their control loops.
4. Multifunctional Capabilities: Many loop calibrators are multifunctional, allowing users to perform various calibration tasks, such as sourcing and measuring current and voltage, as well as measuring and simulating resistance.
5. Portable and Handheld: Loop calibrators are often designed to be portable and handheld, allowing technicians to easily carry them to different locations within an industrial facility for on-site calibration and troubleshooting.
6. HART Communication: Some loop calibrators support Highway Addressable Remote Transducer (HART) communication, a protocol widely used in process industries for digital communication with smart field devices.