The Barfield 2471F megohmmeter tests the insulation breakdown in a variety of applications that require high voltage and low current. It is a simple, rugged, portable, analog unit with selectable test voltages of 45, 100, 200, and 500 VDC. The range of test voltages allows the user to quickly test and pinpoint insulation breakdown over a range of 0.5 to 1000 Megohm. Designed for safety, this device uses current limiting circuitry and ensures user safety even in the 500 volt range since the maximum allowable test currents are well below human sensitivities. Additionally, this device is protected from damage caused by inadvertent connection of the probes across an energized circuit - AC or DC voltages up to 300 volts can be safely applied.
Selectable test voltages 45V, 100V, 200V and 500V
Battery operated with no warm-up time needed - uses "C" and "AA" batteries with auto-off feature to conserve batteries
Equipped with a meter scale with increments from 0.5 to 1,000 megohms
Solid-state circuitry
Hand-held and portable
Push-button activation on the test probe
Absolutely no shock hazards
Sensitive operational amplifier
