Quantum Design Oxford - Lake Shore Model 346 Cryogenic Temperature Controller

Cryogenic Temperature Controller and AC Resistance Bridge

Lake Shore Model 346 and Model 372

The Lake Shore Model 346 temperature controller is used on systems and system elements with temperatures above 250 mK.

For millikelvin temperatures, and specifically for control of our Proteox® Cryofree® dilution refrigerator systems, the Lake Shore Model 372 AC resistance bridge is used.

Model 346 Cryogenic Temperature Controller

Model 346

The Model 346 cryogenic temperature controller delivers rapid, precise temperature control so you can reach stable conditions faster and keep experiments on schedule. With four 100 W heater outputs, it warms up more than twice as quickly as the Model 336, minimizing downtime and maximizing productivity.

Equipped with 10 temperature sensor inputs as standard, all but the most complex systems can be fully monitored and controlled with ease. Each input can read down to 300 mK with the right Cernox or Rox sensor without self-heating, or up to 600 °C with 100 Ω platinum sensors. For more advanced systems, option cards can be added to increase the number of inputs to a maximum of 26, or push to higher temperature with the use of thermocouples.

Enhanced system control is achieved through two digital inputs for external triggering and two relays. The touchscreen interface ensures simple setup and monitoring, while the included ColdSync™ software facilitates advanced setup, initial configuration, and comprehensive data monitoring.

Model 372 AC Resistance Bridge

Model 372

The Model 372 AC resistance bridge and temperature controller builds on the solid foundation provided by the original Lake Shore AC resistance bridge. The Model 372 provides the best possible temperature measurement and control capabilities for dilution refrigerators (DRs) that are intended to be operated below 100 mK. The Model 372 makes it easy to perform multiple tasks that were once very difficult to perform reliably at ultra-low temperatures:

Temperature measurement
Automatic or manual temperature control
Device or sample impedance measurements

Features

Model 346 Temperature Controller Featuers

Best choice for large cryogenic systems requiring increased heater power
Temperature control from 300 mK to 1,505 K
10 sensor inputs — expandable to 26 inputs with option cards
4 PID-controlled 100 W heater outputs (400 W total) for rapid warm-up
4 additional PID-controlled 1 W heater outputs

Model 372 AC Resistance Bridge Features

For dilution refrigerators (DRs) to be operated below 100 mK
Ability to increase the number of measurement channels to a maximum of 16 with an optional 3726 scanner
Powerful impedance measurement capabilities such as quadrature measurements
Multiple PID controllable outputs with up to 10 W of heater power available