Temperature Instruments

Temperature Controllers

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Model 372 AC Resistance Bridge

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:

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Model 350

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Model 336

The first of a new generation of innovative temperature measurement and control solutions by Lake Shore, the Model 336 temperature controller comes standard equipped with many advanced features promised to deliver the functionality and reliable service you’ve come to expect from the world leader in cryogenic thermometry. The Model 336 is the only temperature controller available with four sensor inputs, four control outputs and 150 W of low noise heater power.

Operates down to 300 mK with appropriate NTC RTD sensors
Four sensor inputs and four independent control outputs
Automatically switch sensor inputs using zones to allow continuous measurement and control from 300 mK to 1505 K
Autotuning automatically collects PID parameters

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Model 336

Designed with the user and ease of use in mind, the Model 335 temperature controller offers many user-configurable features and advanced functions that until now have been reserved for more expensive, high-end temperature controllers.

Operates down to 300 mK with appropriate NTC RTD sensors
Automatically switch sensor inputs using zones to allow continuous measurement and control from 300 mK to 1505 K
Two configurable PID control loops providing 50 W and 25 W or 75 W and 1 W
Autotuning automatically collects PID parameters

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Model 336

The Model 325 dual-channel cryogenic temperature controller is capable of supporting nearly any diode, RTD, or thermocouple temperature sensor.

Model	372	350	336	335	325
AC Resistance Bridge	+	-	-	-	-
Number Of Sensor Input (Optional)	2 (17)	4 (8)	4	2	2
Lowest Temperature	<20mK	100mK	300mK	300mK	1.2K
Highest Temperature	420K	1500K	1500K	1500K	1500K
Number Of Heater Outputs	3	4	4	2	2
Total Heat Power	10W+1W+1W	75W+1W+1W+1W	100W+50W	75W+1W (50W+25W)	25W+2W

Temperature Monıtors

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Model 240

Two or eight cryogenic temperature sensor inputs
Supports industry-leading Lake Shore Cernox®, platinum, and other RTDs, plus DT-670 diodes
Precision measurement circuitry with on-board conversion to calibrated temperature units
Monitor temperatures down to 1 K and up to 800 K
Current reversal to minimize thermoelectric offsets
Front-mounted OLED screen for temperature and status reporting
Fully configurable through direct USB connection
PROFIBUS-DP communication integrates with distributed PLC-based control architectures
Easy DIN rail mounting with integrated rear connections for shared power and network

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Model 224

The Lake Shore Model 224 temperature monitor offers precision measurement in a wide range of cryogenic and higher-temperature applications with the ability to easily monitor up to 12 sensor channels. It provides better measurement performance in applications where researchers need to ensure accuracy and precision in their low cryogenic temperature monitoring. Used with Lake Shore’s Cernox® sensors, the Model 224 enables reliable and repeatable temperature measurement over a broad range and as low as 300 mK. Cernox thin-film RTD sensors offer high sensitivity and low magnetic field-induced errors at cryogenic temperatures. The Model 224 has been optimized for use with these well-respected temperature sensors, and features many of the same advanced capabilities of Lake Shore Model 336 temperature controller, including its proven high-precision input circuitry.

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Model 218

The Model 218 is our most versatile temperature monitor. With eight sensor inputs, it can be used with nearly any diode or resistive temperature sensor. It displays all eight channels continuously in K, °C, V or Ω. The measurement input was designed for the demands of cryogenic temperature measurement, however, the monitor’s low noise, high resolution, and wide operating range make it ideal for non-cryogenic applications as well. Two high-resolution A/D converters increase the update rate of the Model 218. It can read sensor inputs more quickly than other scanning monitors because it does not have to wait for current source switching. The result is 16 new readings per second, allowing all inputs to be read twice each second.

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Model 211

The Lake Shore single-channel Model 211 temperature monitor provides the accuracy, resolution, and interface features of a benchtop temperature monitor in an easy to use, easily integrated, compact instrument. With appropriate sensors, the Model 211 measures temperature from 1.4 K to 800 K including temperatures in high vacuum and magnetic fields. Alarms, relays, user-configurable analog voltage or current output, and a serial interface are standard features on the Model 211. It is a good choice for liquefied gas storage and monitoring, cryopump control, cryo-cooler, and materials science applications, and for applications that require greater accuracy than thermocouples allow.