Megohmmeter GenRad 1863 & 1864 High-Resistance Megohmmeter IET Labs offers a choice of GenRad Megohmmeters to fit most high-resistance measurement needs. Although these two instruments are similar in appearance and accuracy, their opera ng ranges differ to match differing needs in the laboratory and produc on area. The IET Labs 1863 and 1864 Megohmmeters are manufactured using the same design and construc on as the original GenRad megohmmeters. See also: • Posi ve Polarity Megohmmeter: 1864-1644 • Digital Megohmmeter/IR Tester: 1865 Plus • Easy to use • Rugged portable carrying case • Charge current up to 5 mA • High-accuracy: 0.01% (100 ppm) • 200 test voltages: 10 Vdc to 1090 Vdc • 50 kΩ to 200 TΩ (2 x 1014) • Analog output • 3 % basic accuracy • Simple opera on • Direct reading, safe and reliable • Insula on resistance measurements for wire and cable • Insula on resistance for capacitors • A wide variety of insula on resistance measurements for components and devices • Indicated for use in various service bulle ns for aircra fuel pump inspec on The 1863 Megohmmeter is the choice for production and inspection tests. The 1863 will measure resistance at any of 5 switch selectable test voltages of: 50, 100, 200, 250 and 500 Vdc. This allows for a simple front panel and is a more economical megohmmeter. It is best suited for applications requiring insulation resistance measurements from 50 kΩ to 20 TΩ. The 1864 Megohmmeter is the choice for more demanding applications. It is the more flexible of the two megohmmeters. The test voltage can be set to any value from 10 Vdc to 109 Vdc in 1 V steps and 10 Vdc steps from 100 Vdc to 1090 Vdc. The 1864 can be set to common test voltages for various capacitors. The 1864 can measure resistances from 50 kΩ to 200 TΩ (2 x 1014 Ω). Stable power supplies and feedback voltmeter circuit minimizes drift and time wasting adjustments. Guard and ground terminals permit measurements of grounded or ungrounded two or three terminal devices. Both instruments are easy to use with directreading 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 5 mA. A danger light near the terminals warns when voltage is present. The instruments are supplied in a convenient, portable, flip-tilt case that is a stand for the meter when in use and protects the megohmmeter during transit and storage. IET LABS, INC. in the GenRad Tradition

SPECIFICATIONS Resistance Accuracy: 1863: (minimum reading is 0.5): Range 1-5: ±2(meter reading+1)% (For example, if meter reading is 1, accuracy is ±2(1.0+1)% = ±4% Range 6: ±(2(meter reading+1)%+2%) 1864: (minimum reading is 0.5): Range 1-5: ±2(meter reading+1)% (For example, if meter reading is 0.5, accuracy is ±2(0.5+1)% = ±3% Range 6: ±(2(meter reading+1)%+2%) Meter Display: Analog Meter Caution High Voltage Indicator Voltage Accuracy (across unknown): ± 2% Short-Circuit Current: Approximately 5 mA Input Terminals: Front Panel Mounted: (+) Unknown (Red) (-) Unknown (Red) Guard...