Fluke® 773 Milliamp Process Clamp Meter. Save time and money by measuring output signals without shutting down the system. The Fluke® 773 milliamp clamp meter is accurate, versatile and highly portable. It saves time and money by measuring 4 to 20 mA signals 5X faster than with traditional multimeters and without breaking the loop. That means you can troubleshoot a live device without having to power down and possibly miss something going on in the process. The 773 is ideal for troubleshooting transmitters, valves and programmable logic controllers (PLCs) found in process plants. The 773 allows you to connect to a milliamp loop in a traditional series workflow to measure, source or simulate a control system. And it measures up to 99 mA non-contact, including 10 to 50 mA signals in older control systems. The 773 also sources and measures DC voltage, so it can be used to troubleshoot voltage input and output devices that accept a 1 to 5 V or 0 to 10 V signal. You can detach the clamp section of the meter and use it as a remote jaw, connected to the main body by an extension cable to make it easier to take measurements in tight spaces.