Accession Number : ADB024228

Title :   Temperature Controlled Quartz Crystal Microbalance System

Descriptive Note : Final rept. 2 Jun 1975-3 May 1977

Corporate Author : FARADAY LABS INC LA JOLLA CA

Personal Author(s) : McKeown, D ; Claysmith, C R ; Breckenridge, Jr , W T ; Dummer, R S

PDF Url : ADB024228

Report Date : 03 May 1977

Pagination or Media Count : 94

Abstract : The TQCM system is designed to measure surface contamination as a function of temperature on the SCATHA satellite. The TQCM system consists of two radiatively-cooled Heads and a Controller. Each Head contains a removable high- sensitivity 1.56 to the 9th power sq cm mass sensor, temperature probe and heater. By ground command, the Controller can set both sensors to operate simultaneously at +100, +30, 0, -30, -60C + or - 1 C or free run. Computer thermal modeling shows that a free running Head pointed into deep space will reach an equilibrium temperature of -163 C.

Descriptors :   *QUARTZ, CONTAMINATION, COOLING, CRYOGENICS, CRYSTALS, HEATERS, LOGIC DEVICES, MIRRORS, POLISHES, RADIATORS(HEATING AND COOLING), SPACE SHUTTLES, TEMPERATURE CONTROL, TEMPERATURE SENSITIVE ELEMENTS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE