Reliable thermometry at very low temperatures

Automatic AC Recistance Bridge AVS-47

Resistance thermometry has become a popular method much because of its simplicity and reasonable cost.

• pre amplifier is located in a separate box  
  
• a new 3 µV excitation range
  
• 8-channel multiplexer is standard  
  
• a primary PICOBUS computer interface is standard  
  
• IEEE-488 secondary interface available as an option  
• self calibration  
  
• can be powered from battery  
  
• 7 ranges 0 .. 2 to 0 .. 2MOhm