2 minute read
SILICON DIODES USED BY NASA
Temperature sensors part of cryochamber instrumentation
At the 23rd Space Simulation Conference, November 2004, Edward. A Packard presented details of the James Webb Space Telescope (JWST) Integrated Science Instrument Module (ISIM) Cryogenic Component Test Facility. The TIS5 Test Objective was:
• To determine the emittance of candidate thermal control coatings for the JWST/ISIM Instrument Assembly from 30 K to 293 K
• To minimise associated error bars in determining emittance values (goal <5%) at 30 K
The cryochamber instrumentation included Lake Shore DT-470-CU-13 standard curve silicon diodes used for panel and tube monitoring to LHe temperatures
±1K accuracy
Read the full presentation
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DT-670
Though discontinued, the diodes used on the JWST ISIM TIS5 test have been replaced with the DT-670 range.
DT-670 Series silicon diodes offer better accuracy over a wider temperature range than any previously marketed silicon diodes Conforming to the Curve DT-670 standard voltage versus temperature response curve, sensors within the DT-670 series are interchangeable, and for many applications do not require individual calibration
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Flight Qualified temperature sensors for space applications
The HR Series is a line of high reliability cryogenic temperature sensors for mission-critical applications. A family of off-the-shelf sensors that have already undergone extreme testing steps to assure you of extra reliability.
In situations where cryogenic temperature control or monitoring forms a critical component of a system and the cost of sensor failure far exceeds the cost of the sensor, subjecting sensors to a higher level of scrutiny becomes vital. Projects where outcomes are worth far more than the sum of their parts are prime examples of this and include:
Space telescopes
Supercolliders
Fusion reactors
Research satellites
Maglev locomotives
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Want to learn more about Temperature Sensors?
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Space Magazine
Quantum Design UK and Ireland brings you the latest in space and aerospace flight qualified testing and components. Our suppliers are responsible for supporting the development of iconic inventions such as the James Webb Space Telescope and the Mars Perseverance Rover. The QDUKI team are happy to introduce a taster of our full solution for space and space-qualified testing in this new magazine.
