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 · 38 Posts. #5 · (Edited) As others have said, overload. If your measuring resistance and don't have the leads touching anything, this is normal as your resistance is infinite (to the meter). If your measuring voltage or amperage, you might have accidentally hit the range button and taken it off autorange. Insulation testers, Learning. Testing insulation resistance is essential to keeping wires and motors working properly. Megohmmeters provide a quick and easy way to determine the condition of the insulation on wire, generators, and motor windings. A megohmmeter is an electric meter that measures very high resistance values by sending a high.  · The manual says that the nominal DC input impedance is gt;10 M. The also has a low-R setting of about 3K to avoid quot;phantomquot; readings. Since most multimeters have a resistive divider to provide ranges, the input resistance should be able to be measured with another multimeter.

I found an old Fluke 37 meter which appears dead. Some initial measuring tells me that there is some life inside it, power seems to get where it should etc. but the display is empty at all times. The Fluke IR contact thermometer combines the temperature measurement functions that industrial, electrical, and HVAC/R professionals need in one tool. It is an IR thermometer for non-contact measurements, with K-type thermocouple capability for contact temperature measurement. It's fast, efficient, and easy to use, saving you valuable time. With the Fluke Digital Multimeter you get True-RMS voltage and current measurements, count resolution, manual and automatic ranging, and frequency, capacitance, resistance, continuity, and diode measurements. In addition, the Fluke provides % basic accuracy, a digital display with analog bar graph and backlight.

4 Jun I've always used my basic fluke 77 but always keep my eye out for a deal on www.doorway.ru? Enter a product name or number to find an up-to-date Fluke product manual. Please contact us prior to sending in your equipment to avoid delays. North America service centers. United States | Fluke.