Omega CL309A Milliamp Loop Calibrator

Omega CL309A Precision Milliamp Loop Calibrator

The Omega CL309A is a robust and highly reliable handheld calibrator designed for process technicians who demand accuracy in the field. Engineered to streamline the maintenance of 4 to 20 mA control loops, this device serves as an all-in-one solution for troubleshooting and calibration.

Whether you need to source current to test a valve positioner, simulate a transmitter to verify a PLC input, or simply measure an existing loop, the CL309A delivers exceptional performance. It features a compact, rugged housing that withstands industrial environments and a user-friendly interface that displays readings in both potential milliamps (mA) and percentage (%) of span. With its ability to measure DC voltage, it is also an essential tool for diagnosing power supply issues in process instrumentation.

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Omega CL309A Key Features & Benefits

• Superior Accuracy: Delivers high-precision results with an accuracy rating better than 0.025%, making it suitable for critical calibration tasks.

• Comprehensive Loop Functions: Capable of Sourcing, Reading, and Simulating current, as well as providing 24V loop power to drive and measure 2-wire transmitters simultaneously.

• Voltage Measurement: Includes a DC Voltage measurement mode to troubleshoot power supplies and check loop voltage compliance.

• Intuitive Operation: Features a 3-position slide switch for quick adjustments and an “EZ-Check” style interface to speed up calibration routines.

• Dual Readout: The high-contrast graphic display allows users to view readings in both milliamperes and % of span instantly.

• Extended Battery Life: Energy-efficient design provides up to 70 hours of continuous operation on standard batteries.

• Field-Ready Design: Lightweight yet durable construction ensures the device survives drops and rough handling in plant environments.

Applications of the Omega CL309A

• Commissioning: Setup and verification of 4-20mA process transmitters (Pressure, Temperature, Flow).

• Valve Testing: Stroking I/P (Current-to-Pressure) converters and control valves.

• System Diagnostics: Troubleshooting PLC analog input cards and DCS loops.

• Power Checks: verifying 24V power supplies in control panels.