SRL

SRL IET | Alldatasheet

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Technical content

IET LABS, INC. in the Gen Rad Tradition www.ietlabs.com TEL: (516) 334-5959 • EMAIL: info@ietlabs.com High-Accuracy, High-Stability Resistance Standards SRL Series Page 1 of 3 SRL Catalog Dec. 2022 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 in cre ments for temperature range of 18°C to 28°C. Operating Temperature: 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: Two-wire plus Guard Terminals: Gold-plated, tellurium-copper, low-thermal-emf binding posts on standard 3/4 inch spacing. A GROUND terminal is provided on all units. Dimensions: for 1 mΩ: 16 cm H x 9 cm Dia (6.3" x 3.55") 10 mΩ to 20 MΩ:

100 MΩ and higher:

SRL-DMM: Weight: for 1 mΩ: 0.9 kg (2 lbs) all others: 0.73 kg (1.6 lb) Other available terminals:

• DMM direct input compatibles
• BNC, Triax, and custom connectors Transit Case: (see page 3) SRL-10GW High-Accuracy Resistance Standard SRL-Series High-Accuracy Resistance Standard Combination Unit 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 AVAILABLE UNITS Extremely high accuracy & stability, sealed, on-site resistance standards requiring no oil or temperature bath. The SRL Series is available in a wide range of off -the-shelf and custom values and combinations.
• Very high stability
• Very low temperature coeffi cient
• No need for stabilization in a temperature-controlled bath SRL-10 kW High-Accuracy Resistance Standard
• Wide choice of values and custom values - 1 m W to 10 TW
• Combination units available
• Calibration report at 3 temperatures - Temperature chart and a and b provided
• Very low hysteresis
• Direct plug-in unit for most DMM's - Fluke, Keysight, and others

IET LABS, INC. in the Gen Rad Tradition www.ietlabs.com TEL: (516) 334-5959 • EMAIL: info@ietlabs.com High-Accuracy, High-Stability Resistance Standards SRL Series Page 2 of 3 SRL Catalog Dec. 2022 Nominal Value Model Number Adjustment to Nominal Stability per year (max change) Max Resistance Change 18-28°C from 23 °C Max Applied Power Typical change at 1 kHz Terminals 0 ppm change* 1 ppm change 3 ppm change 1 mΩ SRL-0.001 ±100 ppm ±50 ppm 25 ppm/°C <100 ppm 4 bp's + gnd 10 mΩ SRL-0.01 ±5 ppm ±15 ppm 5 ppm/°C 25 mW 50 mW 200 mW 4 bp's + gnd 19 mΩ SRL-0.019 ±5 ppm ±15 ppm 5 ppm/°C 25 mW 50 mW 200 mW 4 bp's + gnd 20 mΩ SRL-0.02 ±5 ppm ±15 ppm 5 ppm/°C 25 mW 50 mW 200 mW 4 bp's + gnd 100 mΩ SRL-0.1 ±5 ppm ±12 ppm 2 ppm/°C 50 mW 100 mW 250 mW 4 bp's + gnd 190 mΩ SRL-0.19 ±5 ppm ±12 ppm 2 ppm/°C 50 mW 100 mW 250 mW 4 bp's + gnd 200 mΩ SRL-0.2 ±5 ppm ±12 ppm 2 ppm/°C 50 mW 100 mW 250 mW 4 bp's + gnd 1 Ω SRL-1 ±2 ppm ±8 ppm 3 ppm tot 175 mW 350 mW 850 mW 4 bp's + gnd 1.9 Ω SRL-1.9 ±2 ppm ±8 ppm 3 ppm tot 175 mW 350 mW 850 mW 4 bp's + gnd 2 Ω SRL-2 ±2 ppm ±8 ppm 3 ppm tot 175 mW 350 mW 850 mW 4 bp's + gnd 10 Ω SRL-10 ±2 ppm ±8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 19 Ω SRL-19 ±2 ppm ±8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 20 Ω SRL-20 ±2 ppm ±8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 25 Ω SRL-25 ±2 ppm ±8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 30 Ω SRL-30 ±2 ppm ±8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 50 Ω SRL-50 ±2 ppm ±8 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 100 Ω SRL-100 ±2 ppm ±6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 190 Ω SRL-190 ±2 ppm ±6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 200 Ω SRL-200 ±2 ppm ±6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 350 Ω SRL-350 ±2 ppm ±6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 400 Ω SRL-400 ±2 ppm ±6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 1 kΩ SRL-1K ±2 ppm ±6 ppm 3 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 1 kΩ SRL-1K -TC ±2 ppm ±6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 1.9 kΩ SRL-1.9K ±2 ppm ±6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 2 kΩ SRL-2K ±2 ppm ±6 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 4 kΩ SRL-4K ±2 ppm ±4 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 10 kΩ SRL-10K ±2 ppm ±4 ppm 1.5 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 19 kΩ SRL-19K ±2 ppm ±4 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 20 kΩ SRL-20K ±2 ppm ±4 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 100 kΩ SRL-100K ±2 ppm ±6 ppm 2 ppm tot 100 mW 200 mW 500 mW <200 ppm 4 bp's + gnd 190 kΩ SRL-190K ±2 ppm ±8 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd 200 kΩ SRL-200K ±2 ppm ±8 ppm 2 ppm tot 100 mW 200 mW 500 mW 4 bp's + gnd

1 MΩ SRL-1M ±2 ppm ±8 ppm 2 ppm tot 100 mW 200 mW 500 mW

<1000 ppm 2 bp's + gnd 1.9 MΩ SRL-1.9M ±2 ppm ±9 ppm 3 ppm tot 100 mW 200 mW 500 mW 2 bp's + gnd

2 MΩ SRL-2M ±2 ppm ±9 ppm 3 ppm tot 100 mW 200 mW 500 mW 2 bp's + gnd

10 MΩ SRL-10M ±2 ppm ±9 ppm 3 ppm tot 500 V 1000 V 2500 V <2 % 2 bp's + gnd

19 MΩ SRL-19M ±2 ppm ±10 ppm 4 ppm tot 1000 V 2000 V 5000 V

2 bp's + gnd

20 MΩ SRL-20M ±2 ppm ±10 ppm 4 ppm tot 1000 V 2000 V 5000 V 2 bp's + gnd

100 MΩ SRL-100M ±10 ppm ±20 ppm 5 ppm/°C 2000 V 4000 V 5000 V 2 bp's + gnd + guard

190 MΩ SRL-190M ±10 ppm ±20 ppm 5 ppm/°C 2000 V 5000 V 2 bp's + gnd + guard

200 MΩ SRL-200M ±10 ppm ±20 ppm 5 ppm/°C 5000 V 2 bp's + gnd + guard

1 GΩ SRL-1G ±0.1% ±200 ppm 23 ppm/°C 5000 V 2 bp's + gnd + guard 1.9 GΩ SRL-1.9G ±0.1% ±200 ppm 23 ppm/°C 5000 V 2 bp's + gnd + guard 2 GΩ SRL-2G ±0.1% ±200 ppm 23 ppm/°C 5000 V 2 bp's + gnd + guard 10 GΩ SRL-10G ±0.1% ±500 ppm 25 ppm/°C 5000 V 2 bp's + gnd + guard 19 GΩ SRL-19G ±0.1% ±500 ppm 25 ppm/°C 5000 V 2 bp's + gnd + guard 20 GΩ SRL-20G ±0.1% ±500 ppm 25 ppm/°C 5000 V 2 bp's + gnd + guard 100 GΩ SRL-100G ±0.3% ±500 ppm 25 ppm/°C 5000 V 2 bp's + gnd + guard 190 GΩ SRL-190G ±0.3% ±500 ppm 25 ppm/°C 5000 V 2 bp's + gnd + guard 200 GΩ SRL-200G ±0.3% ±500 ppm 25 ppm/°C 5000 V 2 bp's + gnd + guard 1 TΩ SRL-1T ±0.5% ±500 ppm 50 ppm/°C 5000 V 2 bp's + gnd + guard 1.9 TΩ SRL-1.9T ±0.7% ±1000 ppm 100 ppm/°C 5000 V 2 bp's + gnd + guard 2 TΩ SRL-2T ±0.7% ±1000 ppm 100 ppm/°C 5000 V 2 bp's + gnd + guard XXX Ω SRL-XXX customer-selected value and power specifi cations * negligible effect of self-heating; do not exceed voltage limits where given. ** non-permanent self-heating change; exceeding power given for 3 ppm change may cause a permanent change in the resistance. Please contact IET for high power ratings or for use of the SRL above the power listed in the 3 ppm change column. Standard model Select from table above Custom value SRL- XXX DMM direct plug-in Add -DMM at the end of part number Transit case for SRL units SRC-100, for 2 units SRC-10-n, for n units -N Option Dual N-type terminal connections with ground terminal to fully shielded metal case. Inner enclosure can be separately driven with guard voltage. SPECIFICATIONS

ORDERING INFORMATION

IET LABS, INC. in the Gen Rad Tradition www.ietlabs.com TEL: (516) 334-5959 • EMAIL: info@ietlabs.com High-Accuracy, High-Stability Resistance Standards SRL Series Page 3 of 3 SRL Catalog Dec. 2022 TRANSIT CASES SRC-100 Transit Case for 2 units SRC-10-n Transit Case for n units (5 units shown) Optional Model SRC-100 or SRC-10-n lightweight transit cases provides mechanical protection and insulation from temperature chang es dur ing trans por ta tion or shipping. It is suitable for transporting and storing two or more units.