SRL Series Precision Resistance Standard

  • 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, are available
Prices range from $1,974.00 to $3,819.00
Prices range from $1,974.00 to $3,819.00
Estimated Delivery is 3 to 13 weeks

The SRL series are highest performance resistance standards available from IET Labs with the exception of the SR102, SR103 and SR104. 

The SRL Precision Resistance Standards utilize multiple resistor elements sealed in an exopy housing or custom oil-filled hermetically sealed Bulk Metal® foil resistors. 

With a very low temperature coefficient these high stability sealed resistance standards 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.  

Each resistor is delivered with an ISO-17025 accredited calibration certificate that includes alpha and beta temperature coefficients.

It is possible to maintain SRL resistance standards indefinitely.  The stability of these resistors improves over time.  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.

See cross reference guide versus Fluke 742A Standard Resistors

SRL RESISTANCE STANDARDS BASIC SPECIFICATIONS

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