IET 1862C

General Radio 1862C Megohmmeter
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The General Radio 1862C is a reconditioned Megohmeter that consists of a regulated power supply, a complement of resistance standards and a balanced, dc, vacuum-tube voltmeter with very high input resistance. Test voltages available are 100 VDC and 500 VDC. Resistance range 0.5 Mohm to 2 Tohm at 500 V; 0.5 Mohm to 0.2 Tohm at 100 V; 6 decade ranges. Accuracy is ±3% of indication at low resistance of each decade to ±12% (accuracy to which scale can be read) at high resistance end up to 50,000 Mohm; possible additional ±2% error at top decade. Voltage can be removed from terminals by setting of either switch to discharge position.

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