Introduction Cryogenic Instruments Model 224 Temperature Monitor Model 224 Temperature Monitor DD Lake Shore’s most capable cryogenic temperature monitor DD Equipped with 12 sensor channels for maximum monitoring capabilities DD Precisely measures in both higher temperature and cryogenic applications—down to 300 mK DD Ideal for multi-sensor lab uses, particularly for monitoring Cernox™ sensors DD Ethernet, USB and IEEE-488 computer interfaces DD Proven, intuitive user interface DD Customizable display enables you to label individual input channels DD CE certification DD Full 3 year standard warranty Lake Shore Cryotronics, Inc. | t. 614.891.2244 | f. 614.818.1600 | e. [email protected] | www.lakeshore.

Model 224 Temperature Monitor Introduction Cryogenic Instruments Configure each input independently The Lake Shore Model 224 temperature monitor offers precision measurement in a wide range of cryogenic and highertemperature 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...

Introduction Cryogenic Instruments Model 224 Temperature Monitor Intuitive, configurable display The Model 224 front panel features a 23‑key keypad and intuitive user interface for easy navigation of the temperature monitor’s functions. For added convenience, you can also custom label each sensor input, eliminating the guesswork in remembering or determining the location to which a sensor input is associated. Custom display modes can show multiple configurations of channels. The display above shows the 4 main inputs with their custom labels, while the one below shows all 12 channels plus 4 additional...

Model 224 Temperature Monitor Introduction Cryogenic Instruments Ideal applications DD Labs with multiple temperature sensors DD Applications where both cryogenic and higher temperature readings are required DD Monitoring of simple Dewars and LN cryostats (>4.2 K) DD Closed-cycle refrigerators (CCRs) at 3 K to 4 K DD Pumped He-4 (1.4 K) and He-3 (300 mK) systems DD Temperature monitoring where superconducting magnets are used, such as in mass spectrometer and particle accelerator equipment See our high-performance, highly flexible Cernox™ sensors DD Low magnetic field-induced errors DD A temperature...

Introduction Cryogenic Instruments Model 224 Temperature Monitor Model 224 Specifications Input specifications Sensor temperature coefficient NTC RTD 10 mV Input Range Excitation current Display resolution Measurement resolution Measurement temperature coefficient (0.01 mΩ + 0.001% of rdg)/°C (0.03 mΩ + 0.0015% of rdg)/°C (0.1 mΩ + 0.001% of rdg)/°C (0.3 mΩ + 0.0015% of rdg)/°C (1 mΩ + 0.001% of rdg)/°C (3 mΩ + 0.0015% of rdg)/°C (10 mΩ + 0.001% of rdg)/°C (30 mΩ + 0.001% of rdg)/°C (100 mΩ + 0.002% of rdg)/°C (10 µV + 0.0005% of rdg)/°C (20 µV + 0.0005% of rdg)/°C (0.01 mΩ + 0.001% of rdg)/°C...

Model 224 Temperature Monitor Sensor input configuration Measurement type Excitation Supported sensors Standard curves Input connector Software support LabVIEW™ driver (see www.lakeshore.com) Ethernet Function TCP/IP, web interface with built-in utilities Connector RJ-45 Reading rate To 10 rdg/s on each input Software support LabVIEW™ driver (see www.lakeshore.com) Alarms Number 12, high and low for each input Data source Temperature or sensor units Settings Source, high setpoint, low setpoint, deadband, latching or non-latching, audible on/off, and visible on/off Actuators Display annunciator,...