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DECADE RESISTANCE BOX CRD and R1000 |
Resistance boxes with switches for laboratory.
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Accuracy: 1% both on ac and dc
Resistances of metallic layer with low temperature coefficent and high stability.
Switches with resistance of contact < 0,005W
Two input safety sockets plus earth connector
Power: 0,5kW per resistance; For short period: 1W
Insulation voltage: 2000V
Realised on metallic box, oven-backed, internal connections made according to EEC rules.
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CRD-4 - 4 Decade resistance boxes
- Available models:
| Model |
Decade steps in ohm |
Total ohm |
| CRD 142 R |
10 x (100+10+1+0,1) |
1.111 |
| CRD 143 R |
10 x (1k+100+10+1) |
11.110 |
| CRD 144 R |
10 x (10k+1k+100+10) |
111.100 |
| CRD 145 R |
10 x (100k+10k+1k+100) |
1.111.000 |
| CRD 146 R |
10 x (1M+100k+10k+1k) |
11.110.000 |
CRD-5 - 5 Decade resistance boxes
- Available models:
| Model |
Decade steps in ohm |
Total ohm |
| CRD 153 |
10x(1K+100+10+1+0,1) |
11.111 |
| CRD 154 |
10x(10K+1K+100+10+1) |
111.110 |
| CRD 155 |
10x(100K+10K+1K+100+10) |
1.111.100 |
| CRD 156 |
10x(1M+100K+10K+1K+100) |
11.111.000 |
CRD-6 - 6 Decade resistance boxes
Available models:
| Model |
Decade steps in ohm |
Total ohm |
| CRD 163 |
10x(10K+1K+100+10+1+0,1) |
111.111 |
| CRD 164 |
10x(100K+10K+1K+100+10+1) |
1.111.110 |
| CRD 165 |
10x(1M+100K+10K+1K+100+10) |
11.111.100 |
| CRD 166 |
10x(10M+1M+100K+10K+1K+100) |
111.111.000 |
Description
The R1000 consists of 7 resistor network which can be set by selector switches to the required value from 1 ohm to 9.999.999 ohm in steps of 1 ohm.
Resistors accuracy is +/- 1%.
Sockets provide access to every basic resistor network.
Switches enable series connection of basic resistor networks into one single value.
Series connection is interrupted in position "open" to enable one or a few networks to be used.
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Technical data
Resistance range
--subranges
- 9X1
- 9X10
- 9X100
- 9X1k
- 9X10k
- 9X100k
- 9X1M
Frequency range
-- to 9 k ohm
--toa 9 M ohm
Accuracy
-- X 1ohm and X 10 ohm
-- X 100 ohm and for 1M ohm
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0...99.99.999 ohm
0...9 ohm
0...90 ohm
0...900 ohm
0...9 k ohm
0...90 k ohm
0...900 k ohm
0...9 M ohm
to 10 M ohm
to 10 k ohm
+ 0 - 2% and + 0 - 0.08 ohm
+ 0 - 1%
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Admitted load
Switch over-current
Admitted voltage
Admitted voltage between decades and housing
Dimensions
Weight
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1W max
0.1 A max
100 V max
500 V max.
270 X 80 X 172mm
1.2 Kg
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