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FLIR CM85-2 + CM57-2 vs Fluke 376 FC + iFlex
Posted by Andrew Swan on Sep 5th 2025
FLIR CM85-2 + CM57-2 vs Fluke 376 FC + iFlex: Clamp Meter Comparison
Summary
The FLIR CM85-2 with CM57-2 flexible clamp and the Fluke 376 FC with iFlex probe are premium clamp meter solutions designed for high-current electrical testing, catering to diverse industrial needs in Houston’s electrical and manufacturing sectors.
- •FLIR CM85-2 + CM57-2: This powerful duo offers versatile high-current measurement, with the CM85-2 clamp handling up to 1000 A AC/DC and the standalone CM57-2 flexible coil extending to 3000 A AC. Featuring True-RMS, VFD filtering, inrush capture, and phase rotation, it provides ±3% + 5 digits accuracy. Its Bluetooth METERLiNK® connectivity enables data streaming and logging, while IP54 durability and a rugged design make it ideal for demanding applications like high-amperage motor testing and field diagnostics in Houston’s industrial environments.
- •Fluke 376 FC + iFlex: A comprehensive all-in-one kit, this clamp meter measures up to 1000 A AC/DC with its clamp and extends to 2500 A AC via the integrated iFlex probe, all with ±3% + 5 digits accuracy. Equipped with True-RMS, VFD low-pass filter, inrush capture, and Fluke Connect® for remote logging and trending, it’s a trusted choice for electrical professionals. Its rugged build and CAT IV 600 V / CAT III 1000 V safety ratings ensure reliability for routine testing and maintenance tasks across Houston’s job sites.
M-Testco offers NIST-traceable certification for both systems at our Houston facility, guaranteeing precision and compliance for your electrical testing equipment.
Specification Comparison
Key Questions Answered
Which system is more convenient?
The Fluke 376 FC with iFlex is the more streamlined choice. It’s sold as a single kit with both clamp and flexible measurement up to 2500 A, eliminating the need for multiple meters.
Which offers higher maximum current capacity?
The FLIR CM57-2 flexible clamp reaches 3000 A AC, compared to the Fluke iFlex’s 2500 A. However, FLIR requires carrying two separate meters.
How do they compare on accuracy?
Both systems are rated at ±3% + 5 digits for flexible coil measurements. Neither has a clear edge in precision—performance is essentially equivalent.
Which is more widely used?
The Fluke 376 FC is a proven workhorse across electrical industries. The FLIR CM85-2 + CM57-2 combo is newer, offering higher total capacity but with less widespread adoption.
Best Choice by Application
- •Convenience & Industry Standard: Choose the Fluke 376 FC + iFlex (Certified in Houston by M-Testco) for its all-in-one design and widespread reliability, perfect for routine electrical testing in Houston’s job sites.
- •Higher Amperage Capacity: Select the FLIR CM85-2 + CM57-2 (Certified in Houston by M-Testco) for its 3000 A AC capability, ideal for high-current applications like motor testing in Houston’s industrial sector.
M-Testco Advantage
- •FLIR CM85-2 + CM57-2: Certified in Houston with NIST traceability at M-Testco.
- •Fluke 376 FC + iFlex: Certified in Houston with NIST traceability at M-Testco.
- •Fast, professional turnaround for critical electrical testing tools.
Certify your FLIR CM85-2 + CM57-2 or Fluke 376 FC + iFlex with M-Testco in Houston today to ensure reliable, NIST-traceable accuracy.
Written by Andrew Swan, M-Testco. Information sourced from manufacturer websites. For corrections, please email aswan@m-testco.com with the source, and we’ll update promptly.