Megohmmeter GenRad 1863 & 1864 High-Resistance Megohmmeter Page 1 of 2 IET Labs o ers a choice of GenRad Meg- ohmmeters to t most high-resistance measurement needs. Although these two instruments are similar in appearance and accuracy, their opera ng ranges di er to match di ering needs in the laboratory and produc on area. The IET Labs 1863 and 1864 Megohm- meters are manufactured using the same design and construc on as the original 1863 Megohmmeter 1864 Megohmmeter GenRad megohmmeters. See also: Posi ve Polarity Megohmmeter: 1864-1644 Digital Megohmmeter/IR Tester: 1865 Plus Features: Uses: E asy to use Insula on resistance measurements for wire Rug ged portable carrying case and cable Char ge current up to 5 mA Insula on resistance for capacitors High-accur acy: 0.01% (100 ppm) A wide variety of insula on resistance 200 t est voltages: 10 Vdc to 1090 Vdc measurements for components and devices 14 50 k to 200 T (2 x 10 ) Indicated for use in various service bulle ns Analog output for aircra fuel pump inspec on 3 % basic accur acy Simple opera on Direct reading, safe and reliable The 1863 Megohmmeter is the choice for in 1 V steps and 10 Vdc steps from 100 Vdc to Stable power supplies and feedback voltme- production and inspection tests. The 1863 will 1090 Vdc. The 1864 can be set to common ter circuit minimizes drift and time wasting measure resistance at any of 5 switch select- test voltages for various capacitors. The 1864 adjustments. Guard and ground terminals able test voltages of: 50, 100, 200, 250 and can measure resistances from 50 k to 200 permit measurements of grounded or un- 14 500 Vdc. This allows for a simple front panel T (2 x 10 ). grounded two or three terminal devices. and is a more economical megohmmeter. It is Both instruments are easy to use with direct- The instruments are supplied in a convenient, best suited for applications requiring insulation reading meter indication and lighted range portable, ip-tilt case that is a stand for the resistance measurements from 50 k to 20 T. switch that shows the multiplier for each range meter when in use and protects the megohm- The 1864 Megohmmeter is the choice for more and voltage. The maximum current possible meter during transit and storage. demanding applications. It is the more exible at the terminals is limited to 5 mA. A danger of the two megohmmeters. The test voltage light near the terminals warns when voltage can be set to any value from 10 Vdc to 109 Vdc is present. IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 1863-1864 Datasheet/August 2016Megohmmeter GenRad 1863 & 1864 High-Resistance Megohmmeter Page 2 of 2 SPECIFICATIONS Resistance Accuracy: Voltage Accuracy (across unknown): Fuse: 1863: (minimum reading is 0.5): 2% For 90 to 240 V operation: T 250mA, Range 1-5: 2(meter reading+1)% 250 Vac, 5 x 20 mm fuse Short-Circuit Current: (For example, if meter reading is 1, Approximately 5 mA Dimensions accuracy is 2(1.0+1)% = 4% 16.8 x 25.4 x 17.1 cm Input Terminals: Range 6: (2(meter reading+1)%+2%) (6.63 x 10 x 6.75 in.) Front Panel Mounted: Range 7: (2(meter reading+1)%+4%) (+) Unknown (Red) Weight (-) Unknown (Red) 4.4 kg (9.5 lbs) - Net 1864: (minimum reading is 0.5): Guard (Red) 7.0 kg (14 lbs) - Shipping Range 1-5: 2(meter reading+1)% Ground (Gold) (For example, if meter reading is 0.5, Environmental: accuracy is 2(0.5+1)% = 3% Power: Operating: 0 C to + 40 C, Range 6: (2(meter reading+1)%+2%) 100 - 125 or 200 - 250 V, Switch Se- Stated Accuracy, < 70% RH Range 7: (2(meter reading+1)%+3%) lectable Storage: Range 8: (2(meter reading+1)%+5%) 50 - 400 Hz -20 C to + 60 C, < 80% RH 13 W Meter Display: Analog Meter Caution High Voltage Indicator 1863 Speci cations Voltage Rmin Rmax (right end) Setting (Full Scale left end) (0.5 rdg.) (10% of scale) (2.5% of scale) (5 rdg.) (20 rdg.) 50, 100 Vdc 50 k 500 G 2 T 100, 250 & 500 Vdc 500 k 5 T 20 T 1864 Speci cations Voltage Rmin Rmax (right end) Useful Setting (Full Scale left end) Ranges (0.5 rdg.) (10% of scale) (2.5% of scale) (5 rdg.) (20 rdg.) 10 Vdc to 50 Vdc 50 k 500 G 2 T 7* 50 Vdc to 100 Vdc 200 k 5 T 20 T 8 100 Vdc to 500 Vdc 500 k 5 T 20 T 7* 500 Vdc to 1090 Vdc 5 M 50 T 200 T 8 *Recommended Limit ORDERING INFORMATION 1863-9700 1863 Megohmmeter Available Accessories: 1864-9700 1864 Megohmmeter 630018 Lead Set Includes: Instruction Manual 630018/S Shielded Lead Set Calibration Certi cate Traceable to SI 1863-11 Resistivity Test Fixture IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 1863-1864 Datasheet/August 2016