Model 2793 decade 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).
Decade capacitance boxes are test instruments that simulate prototypical electrical values.
The 279301 is used for medium resistance from 0.1 to 1,111.210 Ω in 1 mΩ steps (best suited for calibration of resistance thermometers or bridges). The 279303 is used for high resistance from 0 to 111.1110 MΩ in 100 Ω steps (suitable for calibration of insulation resistance testers or bridges).
Decade inductance boxes are another type of test instrument used for calibration.
Dielectric Strength | 1,000 V AC for one minute between Panel and Circuit |
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Insulation Resistance | More than 500MΩ at 500V 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. 4.8kg 10.6 lbs |
Resistance Range | 0.1mΩ to 1,111.2100Ω (minimum resistance is 0.1Ω) |
Dial Composition | 0.001Ω x 10 + 0.01Ω x 10 + 0.1Ω x 11 + 1Ω x 10 + 10Ω x 10 + 100Ω x 10 |
Resolution | 1mΩ |
Accuracy | ±(0.01Ω + 2mΩ) at temperature of 23 ±2°C, humidity of 45 to 85%, and 0.1W Power Application |
Max. Allowable Input Power | 0.2SW/slep. Within 1W for overall instrument. |
Max. Allowable Input Current | 50mA (100Ω steps), 150mA (10Ω steps), 500mA (10 Ω steps) and 1.5A (0.1Ω steps) |