Very high accuracy resistance decade boxes with versatile wide ohm range
- High accuracy 0.01% and high performance
- Suitable for Pt100 and tranducer simulation
- 5, 6 8 and 10 Decades
- Long term stability ± 20ppm/year
A versatile range of Series decade resistance boxes available in 5, 6 8 & 10 decades.
High Accuracy and wide ranging from 0.001 ohm to 11 Mega ohm, in a compact lightweight metal case.
The switches have gold plated contacts to ensure a low contact resistance and negligible thermal E.M.F.
Some models employ the Waidner Wolf technique to eliminate the errors switch contact resistance and are particularly suited to Pt100 simulation with resolution as low as 0.001 ohm (» 0.0025°C).
Cropico 00x Series Decade Resistance Boxes
005/6/8 SPECIFICATIONS | |||||||||
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008-B | 008-A | 006-C | 006-B | 006-A | 005-B | Decade | Accuracy | Current Max | |
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10 x 0.001Ω | ± 2% | 1.4A | |||||
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10 x 0.01Ω | ± 1% | 1.4A | ||
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10 x 0.1Ω | ± 0.5% | 1.4A | |
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10 x 1Ω | ± 0.2% | 300mA | |
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10 x 10Ω | ± 0.01% | 100mA | |
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10 x 100Ω | ± 0.01% | 30mA | |
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10 x 1kΩ | ± 0.01% | 18mA | |||
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10 x 10kΩ | ± 0.01% | 5mA | ||||
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10 x 100kΩ | ± 0.01% | 1.8mA | ||||||
10 x 1MΩ | ± 0.05% | 0.3mA |
Model | No. Decades | Total Resistance | Resolution | Suitable for Pt100 Simulation | Resolution °C when Simulating Pt100 | Residual Resistance Ω |
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005-B | 5 | 1,112.10Ω | 0.01 | ![]() |
0.025 | 1Ω |
006-A | 6 | 1,112.11Ω | 0.001 | ![]() |
0.0025 | 1Ω |
006-B | 6 | 11,112.10Ω | 0.01 | ![]() |
0.025 | 1Ω |
006-C | 6 | 111,111Ω | 0.1 | ![]() |
--- | 70mΩ |
008-A | 8 | 111,112.11Ω | 0.001 | ![]() |
0.0025 | 1Ω |
008-B | 8 | 1,111.112.1Ω | 0.01 | ![]() |
0.025 | 1Ω |
Calibration | Weight | |
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Calibration certificates including UKAS traceable are available on request |
005 - 0.5kg 006 - 0.6kg 008 - 0.8kg |
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Switches | Size | |
Contact material gold plated brass Contact resistance = 5 milli ohm Insulation Resistance (all paths = 10 giga ohm) Proof voltage 1kV |
350mm x 100mm x 80mm (W H D) approx (all models) | |
Resistors | ||
Temperature Co-efficient: Full Load Stability: No Load Stability: Over full temperature range: Power Rating: Maximum Continuous Working Voltage: Noise: Thermal E.M.F: Encapsulation: Windings: |