The Model 331 Cryogenic Temperature Controller combines the easy operation and unsurpassed reliability of the Model 330 with improved sensor input and interface flexibility, including compatibility with negative temperature coefficient (NTC) resistance temperature detectors (RTDs). Backed by the Lake Shore tradition of excellence in cryogenic sensors and instrumentation, the Model 331 Temperature Controller sets the standard for mid-price range temperature control instruments.
Operates down to 1.2 K with appropriate sensors
Two sensor inputs
Supports diode, RTD, and thermocouple sensors
Sensor excitation current reversal eliminates thermal EMF errors for resistance sensors
Two autotuning control loops: 50 W and 1 W
IEEE-488 and RS-232C interfaces, analog outputs, and alarm relays
The Model 331 is being replaced by the new Model 335—available May 2011
Limited quantities of the Model 331 are still available
