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.
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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

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>>> 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

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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.

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>>> more details....(under Web Hosting tab) 
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Online File Folder Adds File Backup for Mac Users
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>>> more details....(under Email Accounts tab) 
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