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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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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 |
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Digital Panel Meters Digital Panel Meters Temp, Inc. has the most extensive line of Digital Panel Meters available on the market today. See Temp, Inc. Information |
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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 |
| 19780 | Future Electronics | DESCO INDUSTRIES | Not Provided | Temperature Humidity Meter Resistance Digital Kit |
| ST-1 | Newark | IDEAL TEK | All Supplier Direct Ship | LCR METER, DIGITAL, SMART TWEEZERS; Battery size code:LR 44; Capacitance measuring ranges:1 pF - 4999 uF; Depth, external:25mm; Inductance measuring ranges:1 uH - 499 mH; Length / Height, external:140mm; Resistance measuring RoHS Compliant: NA |
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