Model 2792A resistors are low- to high-value resistance standards which can be used for accurate DC measurements in combination with a potentiometer or bridge. The different models are available, ranging from 0.001Ω to 1MΩ. The resistor elements of the 0.001Ω to 1kΩ models (4 terminal construction) are of selected manganin wire, and those of the 100kΩ and 1MΩ models (3-terminal construction), nickel and chromium wire. AH resistors are fully processed to assure the permanence of resistance.
Low- to high-value resistance standards - 0.001Ω to 1MΩ in 10 steps
Calibrated limit of error - ±10 ppm to ± 100 ppm
Suitable for precision DC measurements using a potentiometer or bridge
Thông số kỹ thuật
| Nominal Value |
0.001 Ω |
| Terminal Construction |
4-terminal |
| Accuracy |
±0.02% @ 20 ± 0.1 °C |
| Calibrated Limit of Error |
±0.01% @ 20 ± 0.2 °C |
| Temperature Coefficient α20(x 10-6 /°C) |
-5 to + 15 |
| Temperature Coefficient β 20(x 10-6 /°C) |
Less than-0.7 |
| Insulation Resistance (at 0 to 40°C) |
Less than-0.7 |
| Dielectric Strength (Between Resistor and The Case) |
1.500V AC for one minute |
| Temperature Coefficient |
Change of resistance with temperature is expressed by the following equation
Rt = R20 [1 + α 20 (t - 20) + β (t - 20)²] where
Rt: resistance at t ºC
R2o:Resistance at 20ºC |
| Power rating |
3W |
| Dimensions |
104 dia. x 125 mm, excluding protrusions(279209, 279210)
4.09 dia. x 4.92 in.
(current terminal width: approx.174 mm(6.85 in.)) |
| Weight |
Approx. 1.2kg
2.6 lbs |
| Attached Document |
Test Certificate - 1 copy |
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