IET Labs, Inc. - In the GenRad Tradition
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Expanded Scope Now Includes
ac Resistance
(View Certificate)

ISO 9001 Compliant
ANSI/NCSL Z540 Compliant

In the
GenRad
Tradition...
In the GenRad Tradition
The World Leader in Metrology since 1915


Proudly Made in
the USA

Cost Effective High Accuracy Decade Box


HARS Series Resistance Decade Box

Our HARS Series is the best choice when you need a laboratory grade, tight tolerance, high performance resistance decade box that is also cost effective.

  • 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-X: ±(0.01% + 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
Resistance
Total
Stability
Long Term
Temperature
Max.
Maximum
Maximum
 per
Decade
Stability
Coefficient
Power
current
voltage
 Step
Resistance
(±ppm/year)
 (±ppm/3 years)
(±ppm/°C)
(W/step)
(per decade)
(per step)
 1 mΩ
 10 mΩ
100
700
50
0.04
8:00 AM
5 mV
 10 mΩ
 100 mΩ
50
350
20
0.2
4:00 AM
40 mV
 100 mΩ
1 Ω
30
50
20
0.25
1.6 A
0.16 V
 1 Ω
 10 Ω
10
25
20
0.6
0.8 A
0.8 V
 10 Ω
 100 Ω
10
25
15
0.6
0.25 A
2.5 V
100 Ω
 1 kΩ
10
25
5
0.6
80 mA
8 V
 1 kΩ
 10 kΩ
10
25
5
0.5
23 mA
23 V
 10 kΩ
 100 kΩ
10
25
5
0.5
7 mA
70 V
 100 kΩ
 1 MΩ
10
25
5
0.5*
2.3* mA
230 V*
 1 MΩ
 10 MΩ
10
25
10
0.5*
0.7* mA
700 V*
10 MΩ
 100 MΩ
50
40
10
0.1*
0.1* mA
1000 V*

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