S800 S800ds
User Manual: S800
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S800 Silicon Diode Temperature Sensor Cryogenic Control Systems, Inc. General Description Features Cryo-Con Silicon Diode Sensors offer high sensitivity over a wide temperature range. Close conformance to a standard response curve ensures reliable and repeatable measurements with a high degree of interchangeability. Accuracy: Available in four tolerance bands. Interchangeability: Conforms to a standard calibration curve with high accuracy. Wide temperature range: 1.4K to 380K. The S800 diode sensors use the industry standard 0.310” copper bobbin package. Extremely stable: Minimum long-term drift. High Repeatability. Specifications Useful Temperature Range: 1.4K to 380K. Use in Radiation: Not recommended for high radiation environments. Standard Curve: Cryo-con S800. Excitation Current: 10µA ±0.1% Maximum Storage Temperature: 400K. Repeatability: 10mK @4.2K, 16mK @77K, 75mK @273K. Recommended Connection: Four-wire for accuracy. Maximum Reverse Voltage: 60V. Magnetic Field Use: Not recommended for fields above 0.1 Tesla or below 40K. Maximum Excitation Current: 2mA. S800 S800 Bobbin Package: The industry standard bobbin package features excellent thermal contact to the diode junction. This ensures a rapid thermal response and minimizes thermal gradients between the sensing element and the sensor package. Mechanical integrity of the sensor assures reliable performance even in severe applications. Thermal integrity plus a single value excitation current (10µA) insure against self-heating and current switching errors. With the bobbin package, the lead wires are thermally anchored to the sensor mounting. This is essential for accurate sensor readings. Installation: Connection is made using a four-wire, 36 AWG cryogenic ribbon cable. Wires may be separated by dipping in Isopropyl Alcohol and then wiped clean. Lead insulation is difficult to strip. A mechanical stripper or scrapping is recommended. Mounting is done with a 4-40 machine screw. A thin layer of Apiezon® N grease is recommended. Bobbin Package Specifications Bobbin Material Gold plated Oxygen free hard Copper. Cable Color Code Marking Individual serial number. V+ Clear Sensor Bonding Stycast epoxy. V- Green Mass 1.1g excluding leads. I+ Black I- Red Leads 36 inches, 36AWG Phosphor-Bronze. Fourlead color coded cryogenic ribbon cable. Insulation is heavy Formvar® . Mounting 4-40 machine screw. Typical Performance Characteristics Temperature Response Temperature Response Below 70K 2 40.00 1.8 35.00 1.6 30.00 Sensitivity (mV/K) 1.4 Volts 1.2 1 0.8 0.6 25.00 20.00 15.00 10.00 0.4 5.00 0.2 0.00 0 0 50 100 150 200 250 300 350 400 0 50 100 150 Tolerance Bands 1.5K to 30K 30K to 100K 200 250 300 350 Temperature (K) Temperature (K) Typical Temperature Response 100K to 400K T(K) V S(V/K) 1.5 1.866 -19.5 Band AA* ±0.1K ±0.1K ±0.1K Band A ±0.25K ±0.5K ±0.5K 4.20 1.809 -21.90 50.00 1.071 -1.64 Band B ±0.5K ±0.5K ±0.33% of temp 77.35 1.023 -1.94 100 0.979 -1.82 Uncalibrated ±1.5K ±1.5K ±1.5K 273 0.623 -2.29 380 0.380 -2.37 *Each sensor provided with an individual calibration curve. Ordering Information Silicon Diode Sensor, Bobbin Package. S800-AA Tolerance Band AA S800-A Tolerance Band A. S800-B Tolerance Band B. S800 Uncalibrated. Cryogenic Control Systems, Inc. PO Box 7012 Rancho Santa Fe, CA 92067 Cryogenic Control Systems, Inc. Tel: (858) 756-3900 Fax: (858) 759-3515 e-mail: sales@cryocon.com Web: www.cryocon.com Specifications subject to change without notice. © Cryogenic Control Systems, Inc. 2007,S800a 400
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