Rugged and Portable Analog Megohmmeter
Up to 3% Accuracy
Up to 200 Test Voltages from 10 V to 1090 VDC
50 kΩ to 200 TΩ Measurement Range
Maximum of 5 mA Charge Current
Analog Output
Suggested Equipment in Boeing Service Bulletins for DC-10, 747 and others
Self Contained, Portable Carrying Case
Large, Direct Reading Front Panel Meter

IET Labs offers a choice of megohmmeters to fit many high-resistance measurement needs. Although these two megohmmeters, the GenRad 1863 and the GenRad 1864, are similar in appearance and accuracy, their operating ranges differ to match differing needs in the laboratory and production area.

Choice for production and inspection: The GenRad 1863 Megohmmeter is the choice for production and inspection tests. The GenRad 1863 will measure resistance at any of five common test voltages up to 500VDC, has fewer controls, and is the lower priced model. It is the best selection for those applications requiring a lesser voltage and resistance range.

Choice for laboratory investigations: The GenRad 1864 Megohmmeter is the choice for more demanding applications. It is the more flexible of the two instruments. The test voltage can be set to any value from 10VDC to 109VDC in 1-volt steps and to 1090VDC in 10 volt steps. Thus the GenRad 1864 can be set to any common, or uncommon test voltage for ceramic, mica or paper capacitors, or other devices. The reverse resistance of rectifiers can be readily measured; the low test voltages are especially useful in measuring solid state diodes. An additional range on the 1864 Megohmmeter permits measurements up to 200 TΩ (2 x 10¹⁴Ω)

Both megohmmeters are easy to use with direct-reading meter indication and lighted range switch that shows the multiplier for each range and voltage. The maximum current possible at the terminals is limited to a 5mA and a panel light near the terminals warns when voltage is present.