Fluke 771 – Milliamp Process Clamp Meter Overview The Fluke 771 is a clamp meter designed specifically for process control environments. It lets you measure milliamp current loops (4-20 mA and up to 100 mA) without breaking the loop, so you avoid interrupting critical systems. It has a remote detachable clamp for tight or awkward locations, a dual backlit display that shows mA and the percent of span of a 4-20 mA loop, and a built-in spotlight for working in low-light enclosures. It helps save time and improve safety for automation, PLC and instrumentation work. Key Features Measure 4-20 mA signals without breaking the loop High accuracy of 0.20 % + 2 counts in lower range (0-20.99 mA) Resolution of 0.01 mA in the lower range Extended range up to 100.0 mA (99.9 mA) with reduced accuracy (1 % + 5 counts) Detachable remote clamp head with extension cable for tight areas Dual backlit display showing measured mA and percent of 4-20 mA span Hold function to freeze readings Integrated LED spotlight to illuminate wires in dark locations Soft carrying case included Trusted 3-year warranty for electronics; 1-year on clamp/cable assembly Technical Specifications Model: 771 Current Ranges (via clamp): - 0.00 to 20.99 mA, resolution 0.01 mA, accuracy 0.20 % + 2 counts - 21.0 to 100.0 mA, resolution 0.10 mA, accuracy 1 % + 5 counts Diameter of measurable conductor: up to 4.5 mm (0.177 in) Operating Temperature: -10 °C to +50 °C Storage Temperature: -25 °C to +70 °C Operating Humidity: < 90 % at < 30 °C; < 75 % at 30-55 °C Operating Altitude: 0 to 2000 m Ingress Protection Rating: IP 40 Size (H × W × Depth): 59 × 38 × 212 mm Weight: ~260 g Vibration: Random 2 g, 5-500 Hz Shock: 1 m drop (except the clamp jaw) Electromagnetic Compatibility: Meets EN 61326-1 Temperature Coefficient: 0.01 % per °C outside 18-28 °C range Power Supply: 2 × AA 1.5 V alkaline batteries Battery Life: ~40 hours typical use Warranty: 3 years on electronics; 1 year on cable/clamp assembly Applications Troubleshooting 4-20 mA loops in process plants without interrupting control circuits Checking analog I/O status in PLCs and instrumentation without breaking loops Verifying old systems with 10-50 mA ranges using the 99.9 mA mode Field work in tight or recessed areas using the detachable clamp and spotlight Why Choose the Fluke 771 Saves downtime by allowing live loop measurements without circuit interruption High resolution and accuracy for precise process control diagnostics Remote clamp and clamp cable make it safer and more flexible in challenging spaces Robust design, safety protections and excellent warranty support Order Now The Fluke 771 is part of Fluke’s process clamp meter family. Available for purchase. Ships worldwide.
