Simpson 444-2 Micro-Ohmmeter

Simpson 444-2 Micro-Ohmmeter

Simpson’s high precision Model 444-2 has been redesigned for added ESD immunity and longer battery life. The model 444-2 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. 

Features:

• 20,000 Count 4 1/2-Digit LCD
• 2 Measurement Methods: AC Pulse and DC Polarity Switching
• Punch-Through Prevention by 100 V 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

Specifications: