Fluke 771 Milliamp Process Clamp Meter

Model#: Fluke 771 Part#: 2646347 UPC#: 0 95969 34969 7
Fluke 771 Milliamp Process Clamp Meter is rated 3.0 out of 5 by 8.
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  • Fluke 771 Milliamp Process Clamp Meter
  • Fluke 771 Milliamp Process Clamp Meter
  • Fluke 771 Milliamp Process Clamp Meter
  • Fluke 771 Milliamp Process Clamp Meter

Key features

  • Measures 4 to 20 mA signals without breaking the loop
  • Best in class 0.2% accuracy
  • Delivers 0.01 mA resolution and sensitivity
  • Measures mA signals for PLC and control system analog I/O
  • Detachable clamp for measurements in tight locations
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Product overview: Fluke 771 Milliamp Process Clamp Meter

Save time by measuring 4-20 mA signals without breaking the loop

The Fluke 771 delivers all the basic functionality you would expect in a milliamp clamp meter. It measures 4-20 mA signals without "breaking the loop," allowing you to measure low level DC current without having to take systems offline for troubleshooting, saving downtime and money. You can also use it to measure output signals from transmitters without breaking the loop when maintaining and troubleshooting process and automation equipment. This saves time and avoids disrupting critical processes so you can avoid expensive downtime. You can also measure 10 to 50 mA signals in older control systems using the 99.9 mA range.

Added convenience

Designed to make troubleshooting easier, the Fluke 771 includes a detachable clamp that can be attached to the wire you're testing while you move the meter—connected by the extension cable—to a better viewing position. This is especially helpful for taking readings in tight locations. With the dual backlit display showing both the mA measurement and the percent of a 4 to 20 mA span you can quickly understand what your system is doing, and a built-in LED spotlight lets you illuminate hard to see wire in dark enclosures. You can also capture and display changing measurements using the Hold function making it easier to verify and record measurements.

What's in the box:

  • Fluke 771 Milliamp Process Clamp Meter 
  • Soft Carrying Case 
  • Quick Reference Guide
  • 3-year warranty

Specifications: Fluke 771 Milliamp Process Clamp Meter

Diameter of measurable conductor0.177 in or 4.5 mm max
Operating temperature-10 to 50°C
Storage temperature-25 to 60°C
Operating humidity< 90% @ < 30°C, < 75% @ 30 to 55°C
Operating altitude0 to 2000 m
IP ratingIP 40
Size59 x 38 x 212 mm (2.32 x 1.5 x 8.35 in)
Weight260 G, (9.1 oz)
VibrationRandom 2 g, 5 to 500 Hz
Shock1 m drop test (except the jaw)
EMI/RFIMeets EN61326-1
For current measurement w/ JAW, add 1 mA to
specification for EMC field strengths of 1 V/m up to 3 V/m.
Temperature coefficient0.01% °C
(< 18°C or > 28°C)
Power, battery life(2) AA 1.5 V Alkaline, IEC LR6, 40 hours typical
WarrantyThree years for electronics
One year for cable and clamp assembly
Functional Specifications
mA measurement
(measured by clamp)
Resolution / range0 to 20.99 mA
Accuracy0.2% + 2 counts
Resolution / range21.0mA to 100.0 mA
Accuracy1% + 5 counts

Models: Fluke 771 Milliamp Process Clamp Meter

Fluke 771
Fluke 771 Milliamp Process Clamp Meter 
Part#: 2646347
UPC#: 0 95969 34969 7


  • Soft Carrying Case 
  • Users Manual 
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Rated 1 out of 5 by from Clamp broken We have bought 3 of these units. The clamp broke on all of them within a month of usage. Very poor design. Also, cannot buy a replacement clamp only. Fluke SA only offer the entire unit, not just the clamp. Fluke, we respect your other products, please improve quality of this meter. Thank you
Date published: 2023-10-05
Rated 3 out of 5 by from clamp broken clamp broken any replacement available, instrument is working fine except the clamp with the lead attached need replacement
Date published: 2023-01-21
Rated 1 out of 5 by from Clamp breaks easily. It's for the second time clamp breaks on my hand when I just wanted to use it. We recently bought a new clamp when the original one snaped half at the hinge. It could be low-quality material or a bad design.
Date published: 2021-08-26
Rated 5 out of 5 by from Time Saver This meter has saved me a lot of headaches. Makes troubleshooting so much simpler without having to interrupt a process by disconnecting wires to measure the current signals. Only Complaint is they are expensive. For the price you would think this meter would have a few more options.
Date published: 2016-12-09
Rated 4 out of 5 by from Quick and easy mA readings. I like how quick and easy it is to trouble shoot a loop without having to break the loop. Use it frequently.
Date published: 2013-09-25
Rated 2 out of 5 by from Basic ammeter...Easily broken Basic clamp-on ammeter for low voltage applications. Barely even used and a co-worker accidently dropped it from a very short distance causing the plastic hinge piece on the clamp to break...now it is useless until I buy a new clamp. Design is definitely not rugged so handle it with care!
Date published: 2012-12-04
Rated 3 out of 5 by from Price too high The product is good, may be not the best. The biggest problem is, it is priced too high. Not worth the price. Fluke should review the pricing.
Date published: 2012-07-27
Rated 5 out of 5 by from Ease of use Great product to quick milliamp checks on control loops without disrupting the process.
Date published: 2012-06-01
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