#热像仪

五金/工具

Thermal camera and multimeter in one tool: when the combo wins and when two separate tools still make sense

This instrument merges a thermal imager with a multimeter: scan a board or panel with the camera, then probe the suspect component without switching tools. The combo wins in maintenance rounds, where one device means less to carry and fewer pockets to search; two separate tools still win on the bench, where a full-size multimeter offers better accuracy ranges and the camera keeps its own larger screen. Before ordering, compare the meter's measurement categories against the panels you work on and confirm the thermal resolution suits your typical distance.

五金/工具

Pointing a phone thermal camera at a fault: what the HIKMICRO P20maxV2 shows, and what to check before buying

A thermal camera answers a question a multimeter cannot: where the heat is. Pointed at a distribution board it shows the breaker running warmer than its neighbours; along a wall it shows the cold strip where insulation is missing, or a warm patch that follows a water leak; over a circuit board it shows which component is doing the heating. A phone thermal camera works by using the phone as the screen and the processor, which is why the phone end of the chain matters as much as the camera end. This listing names two models, P20maxV2 and P09, and describes the camera as high definition with industrial temperature measurement, but it does not state the thermal resolution, the temperature range or the connector. Those three numbers decide whether it is any use for your job. Thermal resolution sets how small a hot spot you can see at a given distance, so reading a cable lug from across a room needs far more pixels than checking a board up close. The range has to cover what you measure, and the connector has to match your phone, because the app only runs on supported models. Confirm all three with the seller before paying. Listed at 1,269 yuan, with annual sales around 1,000 units.