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KM72 AC Bridge Temperature Controller

By optimizing the bridge circuit design and temperature control algorithm, the AC Bridge Temperature Controller overcomes the challenges of high signal noise and slow control response in traditional cryogenic measurements. It provides excellent temperature measurement and control capabilities for dilution refrigerators (DRs) operating below 100 mK. It is particularly suitable for quantum device characterization scenarios that require long-term, stable maintenance of low temperatures in the mK range.

Key Features:

  • Supports dilution refrigerator (DR) operation below 100 mK
  • Up to 16 measurement channels using an optional scanner
  • Powerful impedance measurement capabilities
  • Multiple PID-controlled outputs, heater power up to 10W
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Technical Specifications
Parameters Specifications
Feature Supports dilution refrigerator (DR) operation below 100 mK
Up to 16 measurement channels using an optional scanner
Powerful impedance measurement capabilities
Multiple PID-controlled outputs, heater power up to 10 W
Input type AC, 4-line difference, resistance
Channel 1,Maximum16 Channel (a 16-channel scanner is required,Optional)
Resistance range 22 Range, from 2mΩ to 63.2 MΩ (depending on the incentive)
Temperature coefficient ± 0.0015% / (Relative Read)
Excitation power supply Sinusoidal AC current source
Excitation current 22 Range, ranging from 1 pA to 31.6 mA (valid value)
Excitation accuracy ±2%
Minimum excitation power 10E-18W at 100 kΩ
Voltage input range 12 Range, from 2 μV to 632 mV (valid value)
Range selection mode Manual, voltage excitation, current excitation, automatic range
Scanner mode Manual or automatic scanning(Optional)
Filter Stabilization time : 1s~200s filter window : 1%~80%
Supported sensors NTC/PTC resistance sensor
Connection 6 Needle DIN (current output), 6-pin DIN (voltage input), DA-15 (Scanner control)

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