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Digital Resistance Meters

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About Digital Resistance Meters

Digital resistance meters are instruments that measure electrical resistance. They use solid-state components and display values digitally. Resistance, which is measured in ohms, is the opposition to the flow of electric current of a conductor. Typically, digital resistance meters are powered by an internal battery that applies a small voltage to the circuit being tested. The positive lead is connected to the circuits positive side and the negative lead is connected to the circuits ground. The current is then measured and the resistance calculated. Zero resistance indicates a short. Infinite resistance indicates an open. Often, resistance readings that exceed product specifications are caused by a faulty component or problems such as burnt contacts, corroded terminals, or loose connections. To maintain accuracy, digital resistance meters require regular calibration that consists of connecting the two leads together and zeroing the meter with the adjustment knob.

Digital resistance meters typically display between three and seven digits along with a leading number such as 0 or 1. Four-wire systems minimize voltage drops in the test leads and record highly accurate measurements. Some digital resistance meters are used to monitor devices such as resistance temperature detectors (RTDs) or thermocouples. Others are used to monitor electronic components such as transistors or diodes. Benchtop, rack mounted, and handheld devices are commonly available. Battery powered units do not require plug-in power. Digital resistance meters with audibility continuity beep when the probes touch. Devices with analog bar graph capabilities display status readings such as battery power, signal level, and continuity.

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Products & Services Related to Digital Resistance Meters

Digital Ammeters
Digital ammeters are instruments that measure current flow in amperes and display current levels on a digital display. These devices provide information about current draw and current continuity in order to help users troubleshoot erratic loads and trends
Digital Multimeters
Digital multimeters (or multi-meters) are used to measure electrical quantities such as voltage, current, resistance, frequency, temperature, capacitance, and time period measurements.
Digital Voltmeters
Digital voltmeters are instruments that measure voltage or voltage drop in a circuit. They use solid-state components and display values digitally.

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Engineering Web: Digital Resistance Meters

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Agilent | United States Home
Digital Multimeters, Voltmeters Power Meters & Power Sensors LCR & Resistance Meters Impedance Analyzers
See Agilent Technologies, Inc. / Electronic Measurement Group Information
Digital Multimeters and LCR Meters - National Instruments
Digital Multimeters and LCR Meters National Instruments PC-based digital multimeters (DMMs) and LCR meters are optimized for automated test.
See National Instruments Profile & Catalog
NI PXI-4071 PXI Digital Multimeter (DMM) - 7½-Digit PXI...
Digital Multimeters (DMMs) and LCR Meters
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Part Numbers for Digital Resistance Meters

Part # Distributor Manufacturer Product Category Description
FLUKE-1630 Newark FLUKE Resistivity Digital Earth Ground Resistance Clamp Meter; Kit Contents:Carrying Case w/Shoulder Strap; Resistance Test Loop; 9V Battery; Multi-Language User's Manual; No. of Batteries:1; Resistance Measuring Range:0.025 to 1500 Ohm RoHS Compliant: NA

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