The SRX and SRC Series are cost effective, stable, laboratory or portable resistance standards. Their ruggedness and small size plus their low temperature coefficient makes the SRX and Series Resistance Standard ideal for any applications outside of laboratory environment within the temperature range of 18°C to 28°C. Because of the low temperature coefficient, they require no oil-or-temperature bath. The binding posts are constructed of low-thermal emf material.
For lower resistances, the SRX series resistance standards are available in values ranging from 1 mΩ to 100 MΩ, with custom values available.
For higher resistances, the SRC series resistance standards are available in values ranging from 190 MΩ to 10 TΩ, with custom values available.
It is possible to maintain the SRX & SRC resistance standards indefinitely. They are reliable due to their closed, rugged design and sealed resistors. The units are resistant to electromagnetic interference (EMI) because of their metal enclosure.
Watch a video about the
SRX/SRC Series Economical Resistance Standard
SRC High Resistance Standard Basic Specifications
Model
Nominal Value (Ω)
Adjustment to Nominal (ppm)
Calibration Uncertainty (ppm)
Stability 1 year (ppm)
Tempco (ppm/°C)
Power Coef.(ppm/mW)
SRX-0.001
0.001 Ω
200
200
50
20
0.1
SRX-0.0019
0.0019 Ω
200
200
50
20
0.1
SRX-0.002
0.002 Ω
200
200
50
20
0.1
SRX-0.01
0.01 Ω
200
100
50
20
0.1
SRX-0.019
0.019 Ω
200
100
50
20
0.1
SRX-0.1
0.1 Ω
200
20
50
20
0.1
SRX-0.19
0.19 Ω
200
20
50
20
0.1
SRX-1
1 Ω
20
10
20
10
0.5
SRX-1.9
1.9 Ω
20
10
20
10
0.5
SRX-10
10 Ω
10
5
10
3
0.15
SRX-19
19 Ω
10
5
10
3
0.15
SRX-50
50 Ω
10
5
10
1
0.05
SRX-100
100 Ω
10
5
10
1
0.05
SRX-190
190 Ω
10
5
10
1
0.05
SRX-1K
1 kΩΩ
10
2
10
1
0.05
SRX-1.9K
1.9 kΩ
10
2
10
1
0.05
SRX-10K
10 kΩ
10
2
10
1
0.05
SRX-19K
19 kΩ
10
2
10
1
0.05
SRX-100K
100 kΩ
10
2
10
1
0.05
SRX-190K
190 kΩ
10
2
10
1
0.05
SRX-1M
1 MΩ
20
5
15
3
0.15
SRX-1.9M
1.9 MΩ
20
5
15
3
0.15
SRX-10M
10 MΩ
20
10
20
5
0.25
SRX-19M
19 MΩ
20
10
20
5
0.7
SRX-100M
100 MΩ
50
15
20
5
1.2
SRC-190M
190 MΩ
0.10%
30
500
25
SRC-1G
1 GΩ
0.50%
100
500
50
SRC-1.9G
1.9 GΩ
0.50%
100
500
50
SRC-10G
10 GΩ
0.50%
200
500
50
SRC-19G
19 GΩ
0.50%
500
500
50
SRC-100G
100 GΩ
0.50%
900
500
50
SRC-190G
190 GΩ
1%
900
500
50
SRC-1T
1 T
2%
2500
500
100
SRC-1.9T
1.9 T
2%
2500
1000
200
SRC Series Maximum Voltage: 5000 V. Test Conditions: Four-terminal Kelvin measurements, low power, at 23°C; two-terminal for 1 MΩ and over. Initial calibration data traceable to NIST is provided. Terminals: SRX: Four 5-way binding posts for 4-terminal measurement for 190 kΩ and under; two binding posts for 1 MΩ and over. The binding posts are constructed of tellurium copper for low thermal emf and low resistance. A case ground terminal is also provided. Triax and bnc terminals are also available. SRC: Additional GUARD terminal is provided. Dimensions: 8.6 cm H x 10.5 cm W x 12.7 cm D (3.4" x 4.15" x 5"). Transit Case: Optional Model SRC-100 light weight transit case with handle, suitable for transporting and storing two units. The case provides mechanical protection and insulation from temperature changes during transportation or shipping. Operating Temperature Range: 15 to 30°C.
