High-Accuracy, High-Stability Resistance Standards SRL Series Page 1 of 3 Extremely high accuracy & stability, Wide choice of values and custom sealed, on-site resistance standards values - 1 m to 10 T requiring no oil or temperature bath. Combination units available Calibration report at 3 temperatures The SRL Series is available in a wide range of off-the-shelf and custom - Temperature chart and and values and combinations. provided Very low hysteresis Very high stability Direct plug-in unit for most DMM s Very low temperature coef cient - Fluke, Keysight, and others No need for stabilization in a SRL-10 k High-Accuracy Resistance Standard temperature-controlled bath AVAILABLE UNITS SRL-10G High-Accuracy SRL-Series High-Accuracy Resistance Standard Combination Unit Resistance Standard SRL-DMM Version: Available in any value as a direct plug-in for most DMM s this avoids external leads and noise pickup. (Part number SRL-XXX-DMM Model, e.g. SRL-10K-8508) SPECIFICATIONS Dimensions: Retrace: for 1 m: 16 cm H x 9 cm Dia (6.3 x 3.55 ) 1 to 19 M: Permanent shift in resistance value is <2 ppm for all others: 8.6 cm H x 10.5 cm W x 12.7 cm D (3.4 x 4.15 x 5 ) 23C to 0C to 23C cycle, and 23C to 40C to 23C cycle Weight: Calibration Report: for 1 m: 0.9 kg (2 lbs) Initial SI traceable calibration data provided in 0.5C in cre ments for all others: 0.73 kg (1.6 lb) temperature range of 18C to 28C. Other available terminals: Operating Temperature: DMM direct input compatibles Temperature range of 18C to 28C BNC, Triax, and custom connectors Calibration Conditions: Transit Case: At 23C, low power, traceable to SI (see page 3) <1 M: Five-wire 1 M - 20 M: Three-wire 100 M : Four-wire Terminals: Gold-plated, tellurium-copper, low-thermal-emf binding posts on standard 3/4 inch spacing. A GROUND terminal is provided on all units. IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 EMAIL: info ietlabs.com SRL Catalog Oct. 2019 High-Accuracy, High-Stability Resistance Standards SRL Series Page 2 of 3 SPECIFICATIONS Stability per Max Resistance Nominal Model Adjustment to Max Applied Input Typical change year (max Change 18-28C Terminals Value Number Nominal at 1 kHz change) from 23 C 0 ppm change* <1 ppm change** <3 ppm change** 1 m SRL-0.001 100 ppm 50 ppm 25 ppm/C 4 bp s + gnd 10 m SRL-0.01 5 ppm 15 ppm 5 ppm/C 25 mW 50 mW 200 mW 4 bp s + gnd 19 m SRL-0.019 5 ppm 15 ppm 5 ppm/C 25 mW 50 mW 200 mW 4 bp s + gnd 20 m SRL-0.02 5 ppm 15 ppm 5 ppm/C 25 mW 50 mW 200 mW 4 bp s + gnd 100 m SRL-0.1 5 ppm 12 ppm 2 ppm/C 50 mW 100 mW 250 mW 4 bp s + gnd 190 m SRL-0.19 5 ppm 12 ppm 2 ppm/C 50 mW 100 mW 250 mW 4 bp s + gnd 200 m SRL-0.2 5 ppm 12 ppm 2 ppm/C 50 mW 100 mW 250 mW 4 bp s + gnd 1 SRL-1 2 ppm 8 ppm 3 ppm tot 175 mW 350 mW 850 mW 4 bp s + gnd 1.9 SRL-1.9 2 ppm 8 ppm 3 ppm tot 175 mW 350 mW 850 mW 4 bp s + gnd 2 SRL-2 2 ppm 8 ppm 3 ppm tot 175 mW 350 mW 850 mW 4 bp s + gnd 10 SRL-10 2 ppm 8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 19 SRL-19 2 ppm 8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 20 SRL-20 2 ppm 8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 25 SRL-25 2 ppm 8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 30 SRL-30 2 ppm 8 ppm 3 ppm tot 100 mW 200 mW 500 mW <100 ppm 4 bp s + gnd 50 SRL-50 2 ppm 8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 100 SRL-100 2 ppm 6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 190 SRL-190 2 ppm 6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 200 SRL-200 2 ppm 6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 350 SRL-350 2 ppm 6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 400 SRL-400 2 ppm 6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 1 k SRL-1K 2 ppm 6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 1 k SRL-1K -TC 2 ppm 6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 1.9 k SRL-1.9K 2 ppm 6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 2 k SRL-2K 2 ppm 6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 4 k SRL-4K 2 ppm 4 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 10 k SRL-10K 2 ppm 4 ppm 1.5 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 19 k SRL-19K 2 ppm 4 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 20 k SRL-20K 2 ppm 4 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 100 k SRL-100K 2 ppm 6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 190 k SRL-190K 2 ppm 8 ppm 2 ppm tot 100 mW 200 mW 500 mW <200 ppm 4 bp s + gnd 200 k SRL-200K 2 ppm 8 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp s + gnd 1 M SRL-1M 2 ppm 8 ppm 2 ppm tot 100 mW 200 mW 500 mW 2 bp s + gnd 1.9 M SRL-1.9M 2 ppm 9 ppm 3 ppm tot 100 mW 200 mW 500 mW <1000 ppm 2 bp s + gnd 2 M SRL-2M 2 ppm 9 ppm 3 ppm tot 100 mW 200 mW 500 mW 2 bp s + gnd 10 M SRL-10M 2 ppm 9 ppm 3 ppm tot 500 V 1000 V 2500 V <2 % 2 bp s + gnd 19 M SRL-19M 2 ppm 10 ppm 4 ppm tot 1000 V 2000 V 5000 V 2 bp s + gnd 20 M SRL-20M 2 ppm 10 ppm 4 ppm tot 1000 V 2000 V 5000 V 2 bp s + gnd 100 M SRL-100M 10 ppm 20 ppm 5 ppm/C 2000 V 4000 V 5000 V 2 bp s + gnd + guard 190 M SRL-190M 10 ppm 20 ppm 5 ppm/C 2000 V 5000 V 2 bp s + gnd + guard 200 M SRL-200M 10 ppm 20 ppm 5 ppm/C 5000 V 2 bp s + gnd + guard 1 G SRL-1G 0.1% 200 ppm 23 ppm/C 5000 V 2 bp s + gnd + guard 1.9 G SRL-1.9G 0.1% 200 ppm 23 ppm/C 5000 V 2 bp s + gnd + guard 2 G SRL-2G 0.1% 200 ppm 23 ppm/C 5000 V 2 bp s + gnd + guard 10 G SRL-10G 0.1% 500 ppm 25 ppm/C 5000 V NA 2 bp s + gnd + guard 19 G SRL-19G 0.1% 500 ppm 25 ppm/C 5000 V 2 bp s + gnd + guard 20 G SRL-20G 0.1% 500 ppm 25 ppm/C 5000 V 2 bp s + gnd + guard 100 G SRL-100G 0.3% 500 ppm 25 ppm/C 5000 V 2 bp s + gnd + guard 190 G SRL-190G 0.3% 500 ppm 25 ppm/C 5000 V 2 bp s + gnd + guard 200 G SRL-200G 0.3% 500 ppm 25 ppm/C 5000 V 2 bp s + gnd + guard 1 T SRL-1T 0.5% 500 ppm 50 ppm/C 5000 V 2 bp s + gnd + guard 1.9 T SRL-1.9T 0.7% 1000 ppm 100 ppm/C 5000 V 2 bp s + gnd + guard 2 T SRL-2T 0.7% 1000 ppm 100 ppm/C 5000 V 2 bp s + gnd + guard XXX SRL-XXX customer-selected value and power speci cations * negligible effect of self-heating do not exceed voltage limits where given. ** non-permanent self-heating c hange exceeding this value may cause a permanent change in the resistance Maximum dissipation: in air - 1 W in oil - 4 W ORDERING INFORMATION -N Option Standard model Select from table above Custom value SRL-XXX Dual N-type terminal connections with ground terminal to fully shielded DMM direct plug-in Add -DMM at the end of part number metal case. Inner enclosure can be separately driven with guard voltage. Transit case for SRL units SRC-100, for 2 units SRC-10-n, for n units IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 EMAIL: info ietlabs.com SRL Catalog Oct. 2019