Cernox Sensors
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Cernox™ RTDs Sensors 43 Cernox™ RTDs * Features Cernox™ thin film resistance temperature sensors offer significant advantages over comparable bulk or thick film resistance sensors. The smaller package size of these thin film sensors makes them useful in a broader range of experimental mounting schemes, and they are also available in a chip form. They are easily mounted in packages designed for excellent heat transfer, yielding a characteristic thermal response time much faster than possible with bulk devices requiring strain-free mounting. Additionally, they have been proven very stable over repeated thermal cycling and under extended exposure to ionizing radiation. Low magnetic fieldinduced errors Temperature range of 100 mK to 420 K (model dependent) High sensitivity at low temperatures and good sensitivity over a broad range Excellent resistance to ionizing radiation Bare die sensor with fast characteristic thermal response times: 1.5 ms at 4.2 K, 50 ms at 77 K Broad selection of models to meet your thermometry needs CX-SD CX-AA CX-BR The Lake Shore SD Package – The Most Rugged, Versatile Package in the Industry AA, BC, BG, BO, BR, CD, CO, CU, ET, LR, MT, SD The SD package, with direct sensor-tosapphire base mounting, hermetic seal, and soldered copper leads, provides the industry’s most rugged, versatile sensors with the best sample to chip connection. Designed so heat coming down the leads bypasses the chip, it can survive several thousand hours at 420 K (depending on model) and is compatible with most ultra high vacuum applications. It can be indium soldered to samples without sensor calibration shift. Excellent stability CX-1010 – the Ideal Replacement for Germanium RTDs Variety of packaging options The CX-1010 is the first Cernox™ designed to operate down to 100 mK, making it an ideal replacement for Germanium RTDs. Unlike Germanium, all Cernox models have the added advantage of being able to be used to room temperature. In addition, Cernox is offered in the incredibly robust Lake Shore SD package, giving researchers more flexibility in sensor mounting. CAUTION: These sensors are sensitive to electrostatic discharge (ESD). Use ESD precautionary procedures when handling, or making mechanical or electrical connections to these devices in order to avoid performance degradation or loss of functionality. Typical Cernox™ Sensitivity Typical Cernox™ Resistance 105 CX-1010 CX-1030 CX-1050 CX-1070 * atent #5,363,084, Nov. 1994, “Film Resistors Having P Trimmable Electrodes” and #5,367,285, Nov. 1994, “Cernox™”, “Metal Oxy-nitride Resistance Films and Methods of Making the Same,” Lake Shore Cryotronics, Inc. 107 CX-1080 Typical Cernox™ Dimensionless Sensitivity 10 CX-1010 CX-1030 106 103 104 Dimensionless Sensitivity ()/K) Sensitivity ()/K) Resistance ()) CX-1050 CX-1070 105 104 CX-1080 103 102 101 102 100 CX-1010 CX-1030 CX-1050 CX-1070 CX-1080 1 10t1 101 0.1 1 10 Temperature (K) www.lakeshore.com 100 500 10t2 0.1 1 10 100 500 0.1 0.1 Temperature (K) Lake Shore Cryotronics, Inc. (614) 891-2244 fax: (614) 818-1600 1 10 100 Temperature (K) e-mail: info@lakeshore.com 500

44 Cernox™ RTDs Sensors Specifications Range of Use Minimum Limit Maximum Limit Cernox™ 0.10 K3 325 K Cernox™ HT 0.10 K 420 K Standard curve Not applicable Recommended excitation1 20 µV (0.1 K to 0.5 K); 63 µV (0.5 K to 1 K); 10 mV or less for T > 1.2 K Dissipation at recommended excitation Typical 10–5 W at 300 K, 10–7 W at 4.2 K, 10–13 W at 0.3 K (model and temperature dependent) 3 3 Cernox™ 1050 Model dependent T(K) Calibrated Accuracy4 Thermal response time BC, BR, BG: 1.5 ms at 4.2 K, 50 ms at 77 K, 135 ms at 273 K; SD: 15 ms at 4.2 K, 0.25 s at 77 K, 0.8 s at 273 K; AA: 0.4 s at 4.2...

Cernox™ RTDs Magnetic Field Dependence Data Neutrons and Gamma Rays Typical Calibration Shifts magnetic field (tesla) Typical temperature reading errors for operation of CX-1050 sensors in magnetic fields at temperatures from 2.03 K to 286 K. "Low temperature thermometry in high magnetic fields VII. Cernox1" sensors to 32 T," B. L. Brandt, D. W. Liu Typical calibration shift after 200 thermal shocks from 305 K to 77 Kfor a Model CX-1030 temperature Physical Specifications same color code epoxy seal with leads toward user) General tcLerarice of ±0.005 in [±0.127 mm] unless otherwise noted....

Cernox™ RTDs OPTIONS packages and mounting adapters available for Cernox™ CO adapter - SD package adapter is a spring loaded clamp allowing easy sensor interchangeability To add Length to sensor Leads Uncalibrated sensors Calibrated sensors Sensor packages Ordering Information Uncalibrated sensor—Specify the model number in the left column only, for example CX-1050-BO. Calibrated sensor—Add the calibration range suffix code to the end of the model number, for example CX-1050-BO-1.4L Cernox™ RTD Calibration Range Suffix Codes Numeric figure is the low end of the calibration Letters represent...