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LBT Q1 2007 Engineering Review. DAQ. Housekeeping System Requirements. Interface directly to the Agilent 34970A Absolute accuracy better than 0.5° C Resolution better than 0.05°C Measurement range at least -25°C to +35°C Locations (symmetrical left and right)
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Housekeeping System Requirements • Interface directly to the Agilent 34970A • Absolute accuracy better than 0.5° C • Resolution better than 0.05°C • Measurement range at least -25°C to +35°C • Locations (symmetrical left and right) • C-ring extension, M3 swing arm height, front and rear • C-ring extension, M2 swing arm height, front and rear • Telescope rear counterweights on the C-ring outside LBT Q1 2007 Engineering Review
Housekeeping System Basic Design • RTD (Resistance Temperature Detector) • 4-wire installation LBT Q1 2007 Engineering Review
Highlights (Q1/2007) • Basic design finished • Procured sensors for testing • Installed two test sensors • Surface temperature • Air temperature • Data collection and analysis begun LBT Q1 2007 Engineering Review
Open Issues • Technical • Signal noise • Shielding • Sensor placement • Fragile • Avoid blocking access for maintenance LBT Q1 2007 Engineering Review
Open Issues • Schedule • Installation requires telescope access • Financial • None • Resource • Personnel for fabrication and installation LBT Q1 2007 Engineering Review
Progress (Q1/2007) • Completed basic design • Testing • Installed surface temperature sensor • Collected two weeks of data • Installed air temperature sensor • Currently collecting data LBT Q1 2007 Engineering Review
Planning (Q2/2007) • Data Analysis • Procurement of additional sensors • Installation of additional sensors LBT Q1 2007 Engineering Review