HARS Resistance Decade Box. Standard Resistor Decade.
HARS Series Resistance Resistor Decade is the best choice when you need a laboratory grade,
tight tolerance, high performance resistance decade box that is also cost effective.
Zero Resistance: <1 m per decade, at dc; slightly higher for 7-10 decades.
Maximum Voltage to Case: 2000 V peak.
Switch Type: 11 positions; "0"-"10"; multiple solid silver alloy contacts.
Switch Capacitance: <4 pF per switch, low loss.
Terminals: Low thermal emf beryllium copper binding posts with standard 3/4 inch spacing plus shield terminal; connections from the rear of the instrument are available with RO option.
Solderable terminals for single decade units.
HARS Resistance Decade Box.
| Model | Description |
|---|---|
| HARS | HARS Resistance Decade Box. |
Resistance from 1 mΩ to 111 MΩ
Excellent stability - 10 ppm/yr, 25 ppm/ 3 yrs
Wide choice - single through 11 decade units
High accuracy - 0.01% (100 ppm)
HARS-Z: ±(50 ppm + 1 mΩ)
HARS-X: ±(0.01% + 2 mΩ)
HARS-A: ±(0.05% + 2 mΩ)
HARS-Q: ±(0.02% + 2 mΩ)
HARS-B: ±(0.1% + 4 mΩ)
Very low zero resistance: <1 mΩ per decade
High performance solid silver alloy switches
Low temperature coefficient - 5 ppm/°C
Noninductive or low inductance resistors
Rack mounting available
Special and custom configurations available
Single decade units are available with resistance as low as 1 milliOhm per step to as high as 10 MOhm
per step. These units satisfy many system applications requiring only a single decade while
maintaining all the quality features of the HARS series.
Each decade is enclosed in an aluminum case which can serve as a shield. It may be panel mounted
and integrated with additional units to form potentiometer circuits or other configurations.
Each unit consists of low inductance resistors in series, with a high performance solid silver alloy
contact switch.
| Model*
(0.01% Accuracy) |
Total Res. (Ohm ) | No. of Decades | Resolution (Ohm ) |
HARS-X-1-0.001 HARS-X-1-0.01 HARS-X-1-0.1 HARS-X-1-1 HARS-X-1-10 HARS-X-1-100 HARS-X-1-1K HARS-X-1-10K HARS-X-1-100K HARS-X-1-1M HARS-X-1-10M |
0.01 0.1 1 10 100 1 k 10 k 100 k 1 M 10 M 100 M |
1 1 1 1 1 1 1 1 1 1 1 |
0.001 0.01 0.1 1 10 100 1 k 10 k 100 k 1 M 10 M |
| HARS-X-2-0.001
HARS-X-2-0.01 HARS-X-2-0.1 HARS-X-2-1 HARS-X-2-10 HARS-X-2-100 HARS-X-2-1K HARS-X-2-10K HARS-X-2-100K HARS-X-2-1M |
0.11
1.1 11 110 1.1 k 11 k 110 k 1.1 M 11 M 110 M |
2
2 2 2 2 2 2 2 2 2 |
0.001
0.01 0.1 1 10 100 1 k 10 k 100 k 1 M |
| HARS-X-3-0.001
HARS-X-3-0.01 HARS-X-3-0.1 HARS-X-3-1 HARS-X-3-10 HARS-X-3-100 HARS-X-3-1K HARS-X-3-10K HARS-X-3-100K |
1.11
11.1 111 1.11 k 11.1 k 111 k 1.11 M 11.1 M 111 M |
3
3 3 3 3 3 3 3 3 |
0.001
0.01 0.1 1 10 100 1 k 10 k 100 k |
| HARS-X-4-0.001
HARS-X-4-0.01 HARS-X-4-0.1 HARS-X-4-1 HARS-X-4-10 HARS-X-4-100 HARS-X-4-1K HARS-X-4-10K |
11.11
111.1 1.111 k 11.11 k 111.1 k 1.111 M 11.11 M 111.1 M |
4
4 4 4 4 4 4 4 |
0.001
0.01 0.1 1 10 100 1 k 10 k |
| HARS-X-5-0.001
HARS-X-5-0.01 HARS-X-5-0.1 HARS-X-5-1 HARS-X-5-10 HARS-X-5-100 HARS-X-5-1K |
111.11
1.1111 k 11.111 k 111.11 k 1.1111 M 11.111 M 111.11 M |
5
5 5 5 5 5 5 |
0.001
0.01 0.1 1 10 100 1 k |
| HARS-X-6-0.001
HARS-X-6-0.01 HARS-X-6-0.1 HARS-X-6-1 HARS-X-6-10 HARS-X-6-100 |
1.111 11 k
11.1111 k 111.111 k 1.111 11 M 11.1111 M 111.111 M |
6
6 6 6 6 6 |
0.001
0.01 0.1 1 10 100 |
| HARS-X-7-0.001
HARS-X-7-0.01 HARS-X-7-0.1 HARS-X-7-1 HARS-X-7-10 |
11.111 11 k
111.1111 k 1.111 111 M 11.111 11 M 111.1111 M |
7
7 7 7 7 |
0.001
0.01 0.1 1 10 |
| HARS-X-8-0.001
HARS-X-8-0.01 HARS-X-8-0.1 HARS-X-8-1 |
111.111 11 k
1.111 111 1 M 11.111 111 M 111.111 11 M |
8
8 8 8 |
0.001
0.01 0.1 1 |
| HARS-X-9-0.001
HARS-X-9-0.01 HARS-X-9-0.1 |
1.111 111 11 M
11.111 111 1 M 111.111 111 M |
9
9 9 |
0.001
0.01 0.1 |
| HARS-X-10-0.001
HARS-X-10-0.01 |
11.111 111 11 M
111.111 111 1 M |
10
10 |
0.001
0.01 |
| HARS-X-11-0.001 | 111.111 111 11 M | 11 | 0.001 |
* For less exacting applications, more economical tolerances are available:
- use "A" for "X" in part number for 0.05% basic accuracy, in lieu of .01%
- use "Q" for "X" in part number for 0.02% basic accuracy, in lieu of .01%
- use "B" for "X" in part number for 0.1% basic accuracy, in lieu of .01%
OPTIONS
- RM Rack mountable case for standard 19" rack
- K Kelvin type 4-terminal binding posts
- RO Rear output binding posts