HRRS Series High Resistance Decade Box

HRRS Decade Resistor 4 Dial

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Photo represents example of series. See datasheet for more details on any specific model.

  • Resistance from 100 Ω to 100 GΩ
  • High-accuracy: up to .01%, 3 Accuracy Classes Available
  • Voltage up to 2000 V
  • Excellent TC: as low as 5 ppm/°C
  • Low voltage coefficient: as low as 0.2 ppm/V
  • High-performance solid silver-alloy switches
  • Rack mounting available
Prices range from $1158 to $5443

Estimated Delivery is 3 to 7 weeks

Repair/Calibration Quote Technical Support Request



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 >10 kV and up to 10 TΩ for higher voltage or higher resistance applications.

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

  • *Calibration of meggers and megohmmeters,
  • *Checking of electrochemical and biomedical sensors and instruments.
  • *Testing high-impedance amplifiers and the insulation of low-power circuits.

HRRS Basic Specifications

Resistance per step
Total decade resistance
Accuracy
Max voltage per step (V)
Maximum Voltage (V)
Temperature coefficient (ppm/C)
Voltage coefficient (ppm/V)
Stability (ppm/yr)
Resistor Type
Q
B
F
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.
*To apply up to 2000 V for the first step, use the preceding decade at its "10" position. e.g. to obtain 1 MΩ with 2000 V max, set 100 kΩ switch to position "10."

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