Decade Resistance Boxes 2786
Models 278610 and 278620 six-dial decade resistance boxes allow quick and easy setting of a wide range of resistance. These resistance boxes are used in combination with voltage or current standards to adjust voltage or current, as dummy load resistances or as an arm of AC bridges.
Specifications - Model 278610
| Resistance Range | 0.1 to 111,111Ω (Six decade dials) |
|---|---|
| Residual Residence | Less than 23mΩ |
| Power Rating | 0.3W/Step, Within 3W for overall instrument |
| Maximum Allowed Input | 0.5W/Step, 5W for Overall Instrument |
| Maximum Circuit Voltage | 250V |
| Operating Temperature Range | 0 to 40°C ( 32 to 104°F) |
| Storage Temperature Range | -10 to 50°C (14 to 122°F) |
| Humidity Range | 25 to 85% relative humidity |
| Insulation Resistance | More than 500MΩ at 500V DC between panel and circuit |
| Dielectric Strength | 1,500 V AC for one minute |
| Dimensions | 497（W）×116（H）×140（D）mm, excluding protrusions 19.57 x 4.57 x 5.51 in |
| Weight | Approx. 3.5kg 7.7 lbs |
Specifications - Model 278620
| Resistance Range | 1 to 1,111,110Ω (Six decade dials) |
|---|---|
| Residual Residence | Less than 23mΩ |
| Power Rating | 0.3W/Step, Within 3W for overall instrument |
| Maximum Allowed Input | 0.5W/Step, 5W for Overall Instrument |
| Maximum Circuit Voltage | 250V |
| Operating Temperature Range | 0 to 40°C ( 32 to 104°F) |
| Storage Temperature Range | -10 to 50°C (14 to 122°F) |
| Humidity Range | 25 to 85% relative humidity |
| Insulation Resistance | More than 500MΩ at 500V DC between panel and circuit |
| Dielectric Strength | 1,500 V AC for one minute |
| Dimensions | 497（W）×116（H）×140（D）mm, excluding protrusions 19.57 x 4.57 x 5.51 in |
| Weight | Approx. 3.5kg 7.7 lbs |
| Model | Description |
|---|---|
| 278610 | Resistance Range 0.1 to 111,111Ω (Six decade dials); Residual Residence Less than 23mΩ; Weight 7.76 lbs 3.5 kg |
| 278620 | Resistance Range 1 to 1,111,110Ω (Six decade dials); Residual Residence Less than 23mΩ; Weight 7.76 lbs 3.5 kg |
Brochures
- PRECISION MEASURING INSTRUMENTS (810 KB)
Instruction Manuals
- Decade Resistance Box (1.1 MB)
Drawings
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