Published July 2, 2026 at 08:55
Electrical troubleshooting starts with one universal question: where in the system is the fault? On a factory’s 415 V panel, the problem could be a short-circuited motor winding, a poor contact in a fuse holder, an overloaded conductor, or a worn-out contactor. Each produces a distinct thermal signature, all across different parts of the panel. Opening the panel and measuring systematically takes time, requires disconnecting the power, and exposes technicians to hazards. A clamp meter with a built-in thermal imaging camera reverses this process — first, you visualize the heat through a closed panel or from a safe distance, identify the hotspot, and only then open the panel to confirm with direct measurement.
What IGM (Infrared Guided Measurement) Means
IGM is FLIR’s term for technology where a thermal camera guides the user directly to the fault location without needing to touch the equipment first. The FLIR CM275 clamp meter with thermal imaging applies this principle to electrical troubleshooting. The camera displays a thermal pattern of the panel front — and a cold solder joint, melting PVC insulation, a fuse drawing excessive current, or a motor with an unbalanced winding all stand out as hot spots against their surroundings.
Only then — once the fault is visually pinpointed — does the technician step in with safety equipment to perform physical measurements using the ammeter, voltmeter, or resistance meter. Total diagnostic time is reduced from an hour to often under ten minutes, and the risk of direct contact with unknown potentials decreases dramatically.
What the Clamp Meter Can Measure Beyond Thermal Imaging
The CM275 is fully equipped as a TRMS multimeter and clamp meter. AC/DC clamp measurement is its core function — measuring current without breaking the circuit, which is essential for verifying motor loads, transformer currents, and feeder circuits. TRMS (True Root Mean Square) means the instrument provides accurate RMS readings even on distorted waveforms — critical in modern facilities equipped with variable frequency drives and switch-mode power supplies where pure sine waves are broken down.
Beyond clamp measurements: voltage measurement (AC/DC), resistance measurement, continuity testing, diode testing, capacitance measurement, and frequency measurement. The instrument is, in practice, a comprehensive industrial DMM with a thermal imaging camera as an added bonus.
The Benefits of the Documentation Feature
The display simultaneously shows thermal images and live measurement readings. This makes it possible to document a physical measurement alongside its thermal context — the thermal image with the hotspot plus the measured current flowing through the overheated conductor. For service reporting, this provides combined documentation that no single instrument type alone can deliver.
Images and measurement values can be transferred to a PC for compilation into reports. The instrument’s internal storage is built for a full day of field work — holding several hundred images along with associated measurement data.
Where a Combined Clamp + Camera Makes a Real Difference
Industrial Electrical Service: Facilities with hundreds of motors, transformer stations, and control cabinets. Regular thermal inspections reveal developing problems months before they result in downtime. Being able to verify hotspots with immediate amperage measurements provides fully documented diagnostics.
Commercial Properties: Electrical switchboards in office buildings, shopping malls, and hospitals. Thermal imaging surveys are a standard component of systematic maintenance — especially ahead of insurance audit cycles.
Solar PV Installations: Monitoring inverters, DC disconnects, and combiner boxes. Solar panels with hotspots (from shading or defective bypass diodes) are clearly highlighted with thermal imaging.
Switchgear Maintenance: Circuit breakers, disconnectors, power transformers, and current transformers at substations, intermediate stations, and industrial intake facilities. Preventative maintenance relies on routine thermal surveys.
Data Centers: UPS systems, power distribution units, and cable trays. A hotspot in a distribution panel can compromise thousands of servers if left undetected and unaddressed.
Motor and Pump Service: Motor bearings (an overheating bearing shows up clearly on thermal imaging), motor windings (phase imbalance causes uneven heat distribution), drive belts, and couplings.
HVAC Service: Frequency converters and control electronics for heat pumps and ventilation systems. Electronic control boards with failing components exhibit characteristic thermal signatures.
EV Charging and Transport Electric Motors: Charging stations, battery packs (individual cell hotspots), and motor controllers. An incipient fault in a battery cell is uncovered by thermal imaging long before it turns into a fire hazard.
Industrial Automation: PLC cabinets and I/O distribution enclosures. Overheating relays, burnt terminals, and loose cable terminations — all clearly visible.
What You Get for Your Investment
A combined AC/DC clamp meter with TRMS precision, a built-in thermal camera tailored for electrical inspections, a large backlit display, versatile measurement mode switching for voltage/current/resistance/continuity/capacitance/frequency, image capture and data transfer, and a rugged industrial housing.
At 8 649 SEK, it is an investment that drastically cuts troubleshooting time while enhancing workplace safety. For industrial electrical contractors, this tool is standard equipment that easily justifies itself. For workshops performing periodic electrical servicing, it pays for itself after just a few jobs — particularly when contracts require compliance and documentation for insurance or regulatory authorities.
Learn more: FLIR CM275 clamp meter with thermal imaging in our shop →
