Model 2793 resistance box is high-accuracy, stable DC variable resistor with 6 dials and is available in two styles: 279301 for medium resistance from 0.1 to 1,111.210 Ω in 1 mΩ steps (best suited for calibration of resistance thermometers or bridges); 279303 for high resistance from 0 to 111.1110 MΩ in 100 Ω steps (suitable for calibration of insulation resistance testers or bridges).
Dielectric Strength | 2,500 AC for one minute between Panel and Circuit | ||
---|---|---|---|
Insulation Resistance | More then 10^{11}Ω at 1,000V DC between panel and circuit | ||
Dimension | 497（W）×116（H）×140（D）mm, excluding protrusions 19.57 x 4.57 x 5.51 in. |
||
Weight | Approx. 5.3kg 11.7 lbs |
||
Resistance Range | 0 to 1,111.110Ω | ||
Dial Composition | 100Ω x 10 + 1kΩ x 10 + 10kΩ x 10 + 100kΩ x 10 + 1MΩ x 10 + 10MΩ x 10 | ||
Resolution | 100mΩ | ||
Accuracy | 100Ω, 1kΩ, 10kΩ, 100kΩ Steps - ±(0.05Ω + 0.05mΩ) 1 MΩ and 10MΩ Steps - ±0.2% (At temperature 23 ±2°C, humidity below 75%, including residual resistance of approx. 0.05Ω). |
||
Max. Allowable Input | 100 Ω | Step | 100mA |
1 Ω | Step | 30mA | |
10 Ω | Step | 10mA | |
100 Ω | Step | 3mA (100 to 600 kΩ) | |
2000 V (700 kΩ to 1 MΩ) | |||
1 Ω | Step | 2000 V | |
10 Ω | Step | 2000 V |