Long Island, NY 11590

IET LABS, INC. in the GenRad Tradition

www.ietlabs.com

TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988

High Power Decade

Resistance Substituter

HPRS Series

Page 1 of 2

HPRS Catalog Pages Sept. 2018

Accuracy:

after subtraction of zero resistance, at 23°C; traceable to SI

Option F: ±(1% + 20 mΩ)

Option C: ±(0.5% + 20 mΩ)

Zero Resistance:

<5 mΩ per decade

Terminals:

Two five-way binding posts and one ground post electrically

connected to case.

Dimensions:

43.9 cm W x 8.9 cm H x 10.2 cm D (17.3" W x 3.5" H x 4" D)

Weight:

2.4 kg (5.3 lbs), nominal

Economical, high-performance, high-

power resistance for all laboratory,

test, and calibra•on needs.

SPECIFICATIONS

7 Decade HPRS High Power Decade Resistance Substituter

Resistance

per step

Total

decade

resistance

Max

current*

Max power

per step*

(W)

Temperature

coefficient

(ppm/°C)

Resistor

Type

1 mW

0.009 W

8 A

0.036

±50

Resistance

Wire

10 mW

0.09 W

6 A

0.36

±50

100 mW

0.9 W

6 A

3.6

±20

1 W

9 W

5 A

25

-20 to +80

Power

Film

10 W

90 W

1.5 A

25

-20 to +80

100 W

900 W

0.5 A

25

-20 to +80

1 kW

9 kW

150 mA†

25†

-20 to +80

10 kW

90 kW

50 mA†

25†

-20 to +80

100 kW

900 kW

V limit†

V limit†

-20 to +80

Wirewound/

metal film

1 MW

9 MW

V limit†

V limit†

±50

Wirewound/film

*Subject to maximum of 250 W max. per unit

†Subject to 1000 V (dc+ac) peak max

Features:

• Resistance from 1 mΩ to 10 MΩ

• Wide choice: 3 to 9 decade units

• Accuracy: 0.5% or 1%

• Power Ra•ng : 225 W/decade,

250 W max. or higher

• Rack moun•ng available

• Special and custom configura•ons

available

See also:

• More economical: RS Series

• Higher accuracy: HARS-X or HARS-LX Series

• Higher resistance: HRRS Series

• Higher voltage: HRRS-5kV and HRRS-10kV Series

• RTD simulators: RTD Series -- without zero subtrac•on

• Programmable models: PRS Series

HPRS - 30 ampere unit

HPRS custom in a non-metallic housing