You might wonder why your FNIRSI multimeter won’t let you use both iron sizes at once. This matters because forcing both connections can damage your tool or give wrong readings. The design uses one common input jack for current measurements, so plugging in two irons creates a short circuit path. This bypasses the internal protection … Read more
Fluke 365 Detachable Jaw Clamp Meter Review I’ve been in plenty of tight electrical panels where a standard clamp meter just won’t fit. That’s why I was eager to test the Fluke 365 Detachable Jaw True-RMS AC/DC Clamp Meter 4.6, which separates the jaw from the body for those cramped spots. This meter is built … Read more
Fluke 381 Remote Display Clamp Meter Review I’ve been in enough cramped electrical panels to know that trying to read a clamp meter display while your arm is twisted sideways is no fun. That’s why I grabbed the Fluke 381 Remote Display True-RMS AC/DC Clamp Meter with iFlex 4.6 — the detachable screen lets me … Read more
Fluke 287 True-RMS Logging Multimeter Review I needed a multimeter that could log data over time while I worked on tricky electronics, and the Fluke 287 True-RMS Electronics Logging Multimeter promised exactly that. With its ability to measure voltage, current, resistance, frequency, capacitance, and even temperature, it looked like the all-in-one tool I was after. … Read more
Fluke 393 FC Solar Clamp Meter Review I’ve been working on solar installations for years, and trying to get a clamp meter into a crowded combiner box has always been a pain. That’s why I was excited to test the Fluke 393 FC Solar Clamp Meter, CAT III 1500 V, IP54-Rated — it’s built specifically … Read more
Fluke 1587/I400 FC Insulation Multimeter Review I was troubleshooting a motor winding issue and needed more than just a basic multimeter. That’s when I grabbed the Fluke 4692725 1587/I400 FC 2-in-1 Insulation Multimeter with Clamp to check both insulation resistance and AC current in one go. This tool is really for electricians and maintenance pros … Read more
Fluke 289 Industrial Logging Multimeter Review I’ve been burned by ghost voltages more times than I can count, so when I got my hands on the Fluke 289 True-RMS Stand Alone Logging Multimeter, the LoZ function that eliminates those phantom readings was the first thing I tested. This thing packs a 50,000 count display and … Read more
Fluke 77-4 Automotive Multimeter Review I’ve been burned by cheap multimeters that give flaky readings, especially when I’m troubleshooting a car’s electrical gremlins. That’s why I grabbed the Fluke 77-4 Automotive Digital Multimeter 4.8 to see if it lives up to the hype, especially with its large display and auto/manual ranging features. Honestly, this meter … Read more
Fluke 177 True-RMS Multimeter Review I was tired of my old meter giving wonky readings on variable frequency drives, so I picked up the Fluke 177 True-RMS Digital Multimeter. With 6000 counts and a 33-segment analog bar graph updating 40 times per second, it catches those quick voltage spikes I used to miss. This meter … Read more
Changing the scrolling speed on your FNIRSI multimeter graph lets you control how fast the waveform moves across the screen. This matters because a speed that is too fast can make it hard to spot small voltage changes. If you set the scrolling speed too slow, the graph can feel sluggish and miss quick signal … Read more