The FR4-B- Precision resistor module is both highly accurate and stable, this system of four reference resistors have an extremely low temperature coefficient and excellent long term stability. This high accuracy and superior stability is achieved by the use of a high precision internal temperature controlled oven. This module is specifically designed to interface with all AC and DC resistance bridges and offers the convenience of rack mounting.

The FR4-B- system is further enhanced by your ability to choose the resistor values for the module. You choose the value of the resistors and the order that they are in.

Accuracy: 1 to 10 ohms +-0.005% (50ppm)
10 to 100 ohms +-0.0025% (25ppm)
100 to 1000 ohms +-0.001% (10ppm)
Stability: <2ppm per year
Temperature coefficient: <0.6ppm/ºC
Maximum ambient: 32ºC
Oven temperature: 35ºC +-0.1ºC
Power: 115Vac & 230Vac
Dimension / weight: 483mm wide x 88mm high x 80mm deep / 1.5Kg