The High Resistance Resistance Substituter (HRRS Series) is an economical, high-performance, high-resistance decade box for all laboratory, test, and calibration needs. The High-resistance design is implemented with special resistors, switches, binding posts, and construction-design to allow high resistance performance without sacrificing other electrical properties. These instruments are useful wherever small currents and high resistances are required.
The HRRS Series employs state-of-the-art precision resistors of various types for high accuracy, high stability, and low temperature and voltage coefficients. The standard models offer a choice of one to seven decades.
See the HRRS-5kV & 10kV Series that feature higher voltage >10 kV and higher resistance up to 10 TΩ.
The binding posts, for the HRRS high resistance decade boxes, are insulated with PCTFE (polychlorotrifluoroethylene) a high-resistance, non-moisture-absorbing material to ensure low leakage current.
With a resolution as low as 10 Ω and a maximum available resistance of over 100 GΩ, the HRRS Series may be used for exacting precision high-value resistance applications.
The HRRS series decade box complements the HARS series which provides resistance steps as low as 1 mΩ. The units may be rack-mounted to serve as components in measurement and control systems.
HRRS High Resistance Decade Box Applications
HRRS Basic Specifications
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Resistance per step
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Total decade resistance
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Accuracy
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Max voltage per step (V)
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Maximum Voltage (V)
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Temperature coefficient (ppm/C)
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Voltage coefficient (ppm/V)
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Stability (ppm/yr)
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Resistor Type
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Q
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B
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F
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| 10 Ω | 100 Ω | ±(0.01%+2 mΩ) | ±(0.03%+2 mΩ) | ±(0.10%+2 mΩ) | 2.5 | 25 | 15 | 0 | 10 | Wirewound, non-inductive |
| 100 Ω | 1 kΩ | ±(0.01%+2 mΩ) | ±(0.03%+2 mΩ) | ±(0.10%+2 mΩ) | 8 | 80 | 5 | 0 | 10 | Wirewound, non-inductive |
| 1 kΩ | 10 kΩ | ±0.01% | ±0.03% | ±0.10% | 23 | 230 | 5 | 0 | 10 | Wirewound, non-inductive |
| 10 kΩ | 100 kΩ | ±0.01% | ±0.03% | ±0.10% | 70 | 700 | 5 | 0 | 10 | Wirewound, non-inductive |
| 100 kΩ | 1 MΩ | ±0.01% | ±0.03% | ±0.10% | 230 | 2000 | 5 | 0 | 10 | Wirewound, non-inductive |
| 1 MΩ | 10 MΩ | ±0.01% | ±0.03% | ±0.10% | 1000* | 2000 | 15 | 0.2 | 25 | Metal-oxide film |
| 10 MΩ | 100 MΩ | ±0.03% | ±0.10% | ±1% | 1000* | 2000 | 15 | <1 | 50 | Metal-oxide film |
| 100 MΩ | 1 GΩ | ±0.10% | ±0.20% | ±1% | 1000* | 2000 | 15 | 1 | 100 | Metal-oxide film |
| 1 GΩ | 10 GΩ | ±0.20% | ±0.50% | ±1% | 1000* | 2000 | 50 | 1 | 500 | High-voltage film |
| 10 GΩ | 100 GΩ | ±0.50% | ±1% | ±1% | 1000* | 2000 | 50 | 1 | 500 | High-voltage film |
| 100 GΩ | 1 TΩ | See HRRS-5kV Series for this model. | ||||||||
| 1 TΩ | 10 TΩ | See HRRS-5kV Series for this model. | ||||||||
