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191 Keithley Multimeter


The 191 is a 5.5 digit bench multimeter from Keithley. A multimeter is an instrument used to test and measure alternating current (AC) or direct current (DC) voltage, resistance, and electric current. Multimeters combine voltmeters, ammeters, and ohmmeters. Electricians use multimeters to run diagnostics on batteries, switches, components, power sources, and motors.

Additional Features:

  • Measures DC volts from 1 µV to 1200 V
  • Measures resistance from 1 megohms to 20 M-ohms
  • Push button Null - eliminates potentiometer zeroing
The Keithley 191 is a 5 1/2 digit, 200,000 count, manual ranging bench digital multimeter with dc volts and ohms ranges standard. It provides accurate, stable, low noise and fast responding readings from 1 micro volt to 1200 volts dc on 5 voltage ranges, and 2/4 terminal measurements from 1 milliohm to 20 megohms on 6 resistance ranges. The 191 is capable of 0.0005% resolution on 1 micro volt per megohm of sensitivity.
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