Fluke F773 Milliamp Process Clamp Meter Key Features Loop calibrator that measures 4 to 20 mA signals without breaking the loop Features best in class 0.2% accuracy Sources 4 to 20 mA signals for testing control system I/O or I/Ps Delivers 0.01 mA resolution and sensitivity Measures DC voltage to verify 24V power supplies or voltage I/O signals