HARS-LX Series Decade Resistance Substituter Lab Standard.
The HARS LX Series Resistance Decade Box represents the highest accuracy version of the resistance
substituters for use in the most exacting calibration and test applications.
A continuous rheostat control is available as an option.
The HARS-LX substituter is a precision resistance source with excellent characteristics of accuracy, stability,
temperature coefficient, and power coefficient.
HARS-LX Series Decade Resistance Substituter Lab Standard.
| Model | Description |
|---|---|
| HARS-LX | HARS-LX Series Decade Resistance Substituter |
High accuracy - 20 ppm.
High stability - 5 ppm/yr .
Low temperature coefficient - as low as 3 ppm/° C .
High performance solid silver contact switches.
Resistance from 10 mΩ to over 12.1 MΩ.
1 µΩ or optional 20 µΩ resolution.
Hermetically sealed, low inductance resistors.
Precise fixed minimum resistance.
For high resolution applications, a 10 mΩ rheostat may be added for the lowest step.
It is a 20 µΩ resolution "decade". In order to eliminate contact resistance and thermal emf,
the HARS-LX integrates the rheostat as shown.
In this way, the wiper is in the low potential circuit, which is the high impedance lead.
As a result, voltage and contact resistance effects are removed by being effectively added to the input
impedance of the measuring instrument.
| Model
(Select L or LX accuracy grade) |
Total Resistance (Ohm) | No. of Decades | Resolution (Ohm) |
HARS-L(LX)-1-0.001 HARS-L(LX)-1-0.01 HARS-L(LX)-1-0.1 HARS-L(LX)-1-1 HARS-L(LX)-1-10 HARS-L(LX)-1-100 HARS-L(LX)-1-1K HARS-L(LX)-1-10K HARS-L(LX)-1-100K HARS-L(LX)-1-1M |
0.01 0.1 1 10 100 1 k 10 k 100 k 1 M 10 M |
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 |
| HARS-L(LX)-2-0.001
HARS-L(LX)-2-0.01 HARS-L(LX)-2-0.1 HARS-L(LX)-2-1 HARS-L(LX)-2-10 HARS-L(LX)-2-100 HARS-L(LX)-2-1K HARS-L(LX)-2-10K HARS-L(LX)-2-100K |
0.11
1.1 11 110 1.1 k 11 k 110 k 1.1 M 11 M |
2 2 2 2 2 2 2 2 2 |
0.001
0.01 0.1 1 10 100 1 k 10 k 100 k |
| HARS-L(LX)-3-0.001
HARS-L(LX)-3-0.01 HARS-L(LX)-3-0.1 HARS-L(LX)-3-1 HARS-L(LX)-3-10 HARS-L(LX)-3-100 HARS-L(LX)-3-1K HARS-L(LX)-3-10K |
1.11
11.1 111 1.11 k 11.1 k 111 k 1.11 M 11.1 M |
3
3 3 3 3 3 3 3 |
0.001
0.01 0.1 1 10 100 1 k 10 k |
| HARS-L(LX)-4-0.001
HARS-L(LX)-4-0.01 HARS-L(LX)-4-0.1 HARS-L(LX)-4-1 HARS-L(LX)-4-10 HARS-L(LX)-4-100 HARS-L(LX)-4-1K |
11.11
111.1 1.111 k 11.11 k 111.1 k 1.111 M 11.11 M |
4
4 4 4 4 4 4 |
0.001
0.01 0.1 1 10 100 1 k |
| HARS-L(LX)-5-0.001
HARS-L(LX)-5-0.01 HARS-L(LX)-5-0.1 HARS-L(LX)-5-1 HARS-L(LX)-5-10 HARS-L(LX)-5-100 |
111.11
1.111 1 k 11.111 k 111.11 k 1.111 1 M 11.111 M |
5
5 5 5 5 5 |
0.001
0.01 0.1 1 10 100 |
| HARS-L(LX)-6-0.001
HARS-L(LX)-6-0.01 HARS-L(LX)-6-0.1 HARS-L(LX)-6-1 HARS-L(LX)-6-10 |
1.111 11 k
11.1111 k 11.111 k 1.111 11 M 11.111 1 M |
6
6 6 6 6 |
0.001
0.01 0.1 1 10 |
| HARS-L(LX)-7-0.001
HARS-L(LX)-7-0.01 HARS-L(LX)-7-0.1 HARS-L(LX)-7-1 |
11.111 11 k
111.111 1 k 1.111 111 M 11.111 11 M |
7
7 7 7 |
0.001
0.01 0.1 1 |
| HARS-L(LX)-8-0.001
HARS-L(LX)-8-0.01 HARS-L(LX)-8-0.1 |
111.111 11 k
1.211 111 1 M 1.211 111 M |
8
8 8 |
0.001
0.01 0.1 |
| HARS-L(LX)-9-0.001
HARS-L(LX)-9-K-RM HARS-L(LX)-9-0.01 |
1.211 111 11 M
1.211 111 11 M 12.111 111 1 M |
9
9 9 |
0.001
0.001 0.01 |
| HARS-L(LX)-10-0.001 | 12.111 111 11 M | 10 | 0.001 |
| HARS-L(LX)-11-0.001 | 121.111 111 11 M | 11 | 0.001 |
OPTIONS
- RH 10 m rheostat for lowest decades, 20 µΩ resolution.
- RO Rear output binding posts