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."
