eNewsTronix - Low Temperature Cryogenics Dear Valued Scientist, We invite you to join our SciTech blog which is embedded into our main web site. It can also be accessed directly via this link. Though less to do with cryoscience, it may interest some to review our dedicated web for Gas Flow Management. Si-430 Silicon Diodes The Model Si-430 Silicon Diode temperature sensor offer the industry's highest accuracy in an interchangeable diode temperature sensor. Specifications Range: 1.5K - 400K Excitation: 10,uA - +/-0.1% Repeatability:  10mK @ 4.2K, 16mK @ 77K, 75mK @ 273K Magnetic Field Use: Not recommended for fields above 0.1 Tesla below 40K Use in Radiation:  Not recommended for use in high radiation environments. Leads:  37 AWG Copper, Polyimide insulation, 3 inches standard length Mounting Options:  SMD, CAP, Canister, 22 Bobbin, 25 Bobbin >>> more details >>> more silicon models Other low temperature sensors: Platinum Resistance Thermometers (R.T.D.'s) provide stable output over the range of 60K to 400K. Thermocouples can be used over an extremely wide range in harsh environmental conditions and follow a standard response curve. For reliable and accurate temperature readings over the extended cryogenic range of 1 degree K to 100 degrees K, Scientific Instruments, Inc. offers the Model CG07 family of thermomcouples. These models consist of Teflon coated CHROMEL and Teflon coated Gold (0.07 atomic %) Iron wires which are bonded to form the thermocouple junction. The output of the thermomcouple can be readily connected to an instrument such as the Scientific Instruments Mod. 9700 Temperature Controller. >>> download PDF from footer RO-105 Ruthenium Oxide The Series RO-105 Ruthenium Oxide Sensors offer excellent performance characteristics in magnetic field environments and do not exhibit magneto resistance in fields up to 2 T over their range. The Series RO-105 Ruthenium Oxide sensors are thick-film resistors which adhere to a single resistance-vs-temperature curve. A small positive (but negligible) magneto resistance may be present at larger fields. No orientation dependence of sensor mounting to field direction has been observed. Ruthenium Oxide sensors are available as uncalibrated, grouped or calibrated units which feature good reproducibility, fast thermal response time and a miniature size all at a reasonable cost. Lead Material: Phosphor Bronze  Either two leaded or four leaded bonded cable, polyimide-coated 32 AWG or 36 AWG. Conductors are color coded. Phosphor Bronze exhibits good electrical conductivity, but poor thermal conductivity. Resistivity is 2.7 Ohms per foot. Stranded Copper Teflon-coated wire either two leaded 30 AWG or two and four leaded 36 AWG. Conductors are color coded. Copper exhibits good electrical and thermal conductivity. Resistivity is 0.6 milli-Ohms per foot. Manganin Either two lead or four lead polyurethane-coated 36 AWG. Conductors are not color coded. Exhibits good electrical conductivity, but poor thermal conductivity. Resistivity is 11.8 Ohms per foot. Manganin is not easy to work with. >>> more details What's New @ SwissTronix Secure Cyber Service? New!  This will interest scientists managing their department's sub-web or their group's homepage. It's no secret that most Web site traffic comes from search engines like Google, Yahoo! and MSN. But how do you get listed in search results? 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Online File Folder now has a Mac version of its invaluable File Backup tool. Now you can easily backup your data to your Online File Folder account, synchronize your folders across multiple computers and rest easy that your data is available anytime and anywhere. Just schedule your backup to run automatically or have it run on demand and the Online File Folder Backup tool will do the rest. Plan Features: - 1 GB storage space for under CHF 11.00 / year - Backups, downloads and synchronization with File - Backup Now supports Mac! - Share and backup your files online - Your domain is just CHF4.30 with this purchase! >>> more details....(under Email Accounts tab)  © 2009 X-TRONIX LTD