Click image to enlarge  IET Labs HRRS Series User Manual Data Sheet

Features: High accuracy - up to .01% High stability - up to 10 ppm/yr Excellent TC - as low as 5 ppm/°C High voltage versions available One to ten decades up to >1 TΩ Low voltage coefficient - as low as 0.2 ppm/V

  Specifications:

 

Resistance Per Step	Decade Resistance	Accuracy Option			Max Voltage (Per Step)	Maximum Voltage (V)	Temp. Coefficient ±ppm/°C	Voltage Coefficient ±ppm/V	Stability ±ppm/year
		Q	B	F
10 Ω	100 Ω	±0.01%	±0.03%	±0.1%	2.5 V	25	15	0	10
100 Ω	1 kΩ	±0.01%	±0.03%	±0.1%	8 V	80	5	0	10
1 kΩ	10 kΩ	±0.01%	±0.03%	±0.1%	23 V	230	5	0	10
10 kΩ	100 kΩ	±0.01%	±0.03%	±0.1%	70 V	700	5	0	10
100 kΩ	1 MΩ	±0.01%	±0.03%	±0.1%	230 V*	2000	5	0	10
1 MΩ	10 MΩ	±0.03%	±0.1%	±1%	1000 V*	2000	5	0.2	10
10 MΩ	100 MΩ	±0.03%	±0.1%	±1%	1000 V*	2000	15	0.2	50
100 MΩ	1 GΩ	±0.1%	±0.2%	±1%	1000 V*	2000	25	0.2	100
1 GΩ	10 GΩ	±0.2%	±0.5%	±1%	1000 V*	2000	50	1	500
10 GΩ	100 GΩ	±0.5%	±1%	±1%	1000 V*	2000	50	1	500
100 GΩ	1 TΩ	±0.5%**	±1-3%	±1-3%	1000 V*	2000	200	5	500
* Subject to maximum of 2000 V (dc + ac peak) See HRRS-5kV Series for higher voltage. ** 1% for 200 GΩ; 2% for 300-800 GΩ; 3% for 900-1000 GΩ.

Model	Dimensions	Weight
3 decades	31.2 cm W x 8.9 cm H x 10.2 cm D (12.3" x 3.5" x 4.0")	1.4 kg (3.0 lb)
4 decades	37.5 cm W x 8.9 cm H x 10.2 cm D (14.8" x 3.5" x 4.0")	1.6 kg (3.5 lb)
5 decades		1.9 kg (4.0 lb)
6 and 7 decades	43.9 cm W x 8.9 cm H x 10.2 cm D (17.3" x 3.5" x 4.0")	2.0 kg (4.5 lb)