Download Data Sheet - Alpha ADR Series (60 KB)

The ADR Digital Type equipped with a CPU is easy to set a desired resistance value either by hand in local mode or by personal computer in remote mode. The ADR Digital Type originally holds data memory such as specific ohmic values corresponding to temperatures in Pt100 resistance thermometer so that data inputting jobs can be eliminated, resulting in time saving for measuring operation.

It is constructed with ultraprecision metal foil resistors which are manufactured by Alpha Electronics Corp. and which have been established as the best precision resistive component in the world market for the very low temperature coefficient and the excellent long-term stability of resistance. In order to keep itself from environmental noise, it is properly enclosed double electrical shielding.

Features

• Remote mode of operation using GP-IB or RS-232C connection
• Accuracy < 0.005% +2mΩ in six and half a digit readings
• Temperature coefficient of resistance < 5ppm/C
• Long-term stability in resistance < 50ppm/year
• Low thermal EMF terminal
• Double electrical shielding protection against noise
• Quick response capable of setting desired resistance in as fast as 100ms
• Interface specification open to users