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12681 (444-2)

Ohmmeter, Micro, 4-Wire, 0.02ohm, 0.2ohm, 2ohm, 20ohm, 0.001 ohm, 5 mA, 0.05%, 68 mm

SIMPSON 12681 (444-2)

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Manufacturer Part No:
12681 (444-2)
Newark Part No.:
Technical Datasheet:
12681 (444-2)   Datasheet
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Product Information

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0.02ohm, 0.2ohm, 2ohm, 20ohm









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Technical Documents (5)

Product Overview

Micro-Ohmmeter measures resistance from 50 micro-ohm to 20 ohms. It measures using an extremely small test voltage (100 microvolt maximum) and a four wire measurement technique. The resistance reading is indicated on a 4- 1/2 digit LCD display using one of two measuring modes: An automatic AC measurement mode or a manual DC measurement mode. By limiting the test voltage of the Model 444-2 to only 100 micro volts the instrument will not "punch through" contamination or corrosion. An audible tone can be used to indicate resistance values below any selected reading. The Model 444-2 has a universal power input range of 85Vac to 250Vac and incorporates a self-contained rechargeable Ni-Cad battery for field use
  • 20,000 Count 4 1/2-Digit LCD
  • 2 Measurement Methods: AC Pulse and DC Polarity Switching
  • Punch-Through Prevention by 100 MicroV Max. Test Voltage
  • User-Adjustable, Low-Resistance Alarm
  • AC Test Mode Cancels Offset Voltages and Thermocouple Effects
  • Includes Ni-Cad Battery for Field Use and Test Leads
  • Extended Battery Life, 10 Hours Typical


Test & Measurement, Maintenance & Repair

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