Loop & Signal Calibrators

7 products

Loop signal calibrators (also known as loop calibrators or milliamp calibrators) are essential tools for testing and maintaining 4–20 mA current loops used in process control. These portable instruments can source and measure current, simulate transmitter signals, and troubleshoot control loops to ensure accurate measurement and smooth automation. By verifying end-to-end loop integrity—including wiring and instrumentation—these calibrators help maintain calibration accuracy, minimize downtime, and support system reliability. In control systems where sensor readings impact safety and productivity, loop signal calibrators are indispensable.
Ensure your control loops run flawlessly—explore our high-quality loop signal calibrators and elevate your system reliability today!

Frequently Asked Questions

A loop calibrator is used to source, simulate, and measure DC current (4-20mA) and voltage signals; HK Calibrations provides these tools to help technicians troubleshoot PLC inputs, verify valve positioners, and calibrate transmitters within a control loop.

In "source" mode, the calibrator provides the power for the loop, whereas in "simulate" mode, the tool acts as a transmitter and relies on an external power supply; HK Calibrations stocks versatile units that handle both functions to suit various field wiring configurations.

Yes, several of our advanced models feature built-in HART compatibility, allowing HK Calibrations customers to communicate with and configure smart transmitters directly through the signal wires without needing a separate handheld communicator.

These functions allow a single technician to verify the linearity of a system from the field; HK Calibrations supplies calibrators that can automatically cycle through 0%, 25%, 50%, 75%, and 100% signal outputs to check for stiction in valves or scaling errors in a SCADA system.

We offer specific models rated for use in hazardous areas; HK Calibrations recommends these for technicians working in Australian oil and gas refineries or chemical plants where explosive atmospheres require certified, spark-free test equipment.

Absolutely, HK Calibrations offers professional, traceable calibration to ensure your loop calibrator remains accurate and compliant with Australian quality standards, preventing costly measurement errors in your automated processes.