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Precision Resistance Standards

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SRL Series Precision Resistance Standards

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  • Very stable - up to 2 ppm/yr
  • Wide range of values - 1 mΩ to 10 TΩ, In addition to the standard values, any custom value is available.  Please contact the IET sales department, for more information
  • Used by National Measurment Institutes across the world
  • 3 Year Warranty Included
  • Excellent TC - as low as 0.4 ppm/°C - No need for stabilization in a temperature-controlled bath
  • Calibration report at 3 temperatures- Temperature chart with alpha and beta provided
  • Combination of multiple resistors in a single housing and direct plug-in unit for most DMM's Fluke , Wavetek, Agilent, is available


For most resistance values, the SRL series are highest performance resistance standards available from IET Labs. With a very low temperature coefficient these highest stability sealed resistance make an ideal standard for precision applications inside or outside of laboratory environment. Because of the low temperature coefficient, they require no oil-or-temperature bath.

It is possible to maintain SRL 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.

SRL RESISTANCE STANDARDS BASIC SPECIFICATIONS

Nominal Value Model Number Adjustment to Nominal Calibration Uncertainty Typical Stability per year Max Resistance Change 18-28°C from 23 °C
1 mΩ SRL-0.001 ±50 ppm ±8 ppm ±50 ppm 20 ppm/°C
1.9 mΩ SRL-0.0019 ±50 ppm ±8 ppm ±50 ppm 20 ppm/°C
2 mΩ SRL-0.002 ±50 ppm ±8 ppm ±50 ppm 20 ppm/°C
10 mΩ SRL-0.01 ±5 ppm ±6 ppm ±4 ppm 5 ppm/°C
19 mΩ SRL-0.019 ±5 ppm ±6 ppm ±4 ppm 5 ppm/°C
20 mΩ SRL-0.02 ±5 ppm ±6 ppm ±4 ppm 5 ppm/°C
100 mΩ SRL-0.1 ±5 ppm ±2 ppm ±4 ppm 2 ppm/°C
190 mΩ SRL-0.19 ±5 ppm ±2 ppm ±4 ppm 2 ppm/°C
200 mΩ SRL-0.19 ±5 ppm ±2 ppm ±4 ppm 2 ppm/°C
1 Ω SRL-1 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
1.9 Ω SRL-1.9 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
2 Ω SRL-1.9 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
10 Ω SRL-10 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
19 Ω SRL-19 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
20 Ω SRL-19 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
25 Ω SRL-25 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
30 Ω SRL-30 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
50 Ω SRL-50 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
100 Ω SRL-100 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
190 Ω SRL-190 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
200 Ω SRL-190 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
350 Ω SRL-350 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
400 Ω SRL-400 ±2 ppm ±1 ppm ±2 ppm 3 ppm tot
1 kΩ SRL-1K ±2 ppm ±1 ppm ±1 ppm 3 ppm tot
1.9 kΩ SRL-1.9K ±2 ppm ±1 ppm ±1 ppm 2 ppm tot
2 kΩ SRL-2K ±2 ppm ±1 ppm ±1 ppm 2 ppm tot
4 kΩ SRL-4K ±2 ppm ±1 ppm ±1 ppm 2 ppm tot
10 kΩ SRL-10K ±2 ppm ±1 ppm ±1 ppm 1.5 ppm tot
19 kΩ SRL-19K ±2 ppm ±1 ppm ±1 ppm 2 ppm tot
20 kΩ SRL-100K ±2 ppm ±1 ppm ±2 ppm 2 ppm tot
100 kΩ SRL-100K ±2 ppm ±1 ppm ±2 ppm 2 ppm tot
190 kΩ SRL-190K ±2 ppm ±1 ppm ±2 ppm 2 ppm tot
200 kΩ SRL-190K ±2 ppm ±1 ppm ±2 ppm 2 ppm tot
1 MΩ SRL-1M ±2 ppm ±2 ppm ±2 ppm 2 ppm tot
1.9 MΩ SRL-1.9M ±2 ppm ±2 ppm ±2 ppm 3 ppm tot
2 MΩ SRL-1.9M ±2 ppm ±2 ppm ±2 ppm 3 ppm tot
10 MΩ SRL-10M ±2 ppm ±2 ppm ±2 ppm 3 ppm tot
19 MΩ SRL-19M ±2 ppm ±9 ppm ±2 ppm 4 ppm tot
20 MΩ SRL-19M ±2 ppm ±9 ppm ±2 ppm 4 ppm tot
100 MΩ SRL-100M ±10 ppm ±9 ppm ±20 ppm 5 ppm/°C
190 MΩ SRL-100M ±10 ppm ±9 ppm ±20 ppm 5 ppm/°C
200 MΩ SRL-100M ±10 ppm ±9 ppm ±20 ppm 5 ppm/°C
1 GΩ SRL-1G ±0.1% ±100 ppm ±100 ppm 20 ppm/°C
1.9 GΩ SRL-1G ±0.1% ±100 ppm ±100 ppm 20 ppm/°C
2 GΩ SRL-1G ±0.1% ±100 ppm ±100 ppm 20 ppm/°C
10 GΩ SRL-10G ±0.1% ±200 ppm ±300 ppm 25 ppm/°C
19 GΩ SRL-10G ±0.1% ±200 ppm ±300 ppm 25 ppm/°C
20 GΩ SRL-10G ±0.1% ±200 ppm ±300 ppm 25 ppm/°C
100 GΩ SRL-100G ±0.2% ±1000 ppm ±300 ppm 25 ppm/°C
190 GΩ SRL-100G ±0.2% ±1000 ppm ±300 ppm 25 ppm/°C
200 GΩ SRL-100G ±0.2% ±1000 ppm ±300 ppm 25 ppm/°C
1 TΩ SRL-1T ±0.5% ±0.25% ±300 ppm 50 ppm/°C
1.9 TΩ SRL-1.9T ±0.7% ±0.7% ±500 ppm 100 ppm/°C
2 TΩ SRL-2T ±0.7% ±0.7% ±500 ppm 100 ppm/°C
10 TΩ SRL-10T ±0.7% ±0.7% ±1000 ppm 100 ppm/°C
19 TΩ SRL-19T ±0.7% ±0.7% ±1000 ppm 100 ppm/°C
20 TΩ SRL-20T ±0.7% ±0.7% ±1000 ppm 100 ppm/°C


Retrace:1 Ω to 19 MΩ: Permanent shift in resistance value is <2 ppm for 23°C to 0°C to 23°C cycle, and 23°C to 40°C to 23°C cycle
Calibration Report: Initial SI traceable calibration data provided in 0.5°C increments for temperature range of 18°C to 28°C.
Calibration Conditions: At 23°C, low power, traceable to SI <1 MΩ: Five-wire 1 MΩ - 20 MΩ: Three-wire ≥100 MΩ: Four-wire
Physical 0.001 Ω - 19 MΩ 8.6 cm H x 10.5 cm W x 12.7 cm D (3.4" x 4.15" x 5")  
100 MΩ - 10 TΩ 17.75 x 10 x 10 cm (7 x 4 x 4 inches),

$1979.00 - $4895.00

Estimated Delivery: 3 to 16 weeks

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