Shuttle program managers made the decision at 7:24 a.m. EST after a failure occurred in a fuel sensor system while Atlantis' external fuel tank was being filled.
The liquid-position sensor working principle of brake-used oil tank, structural design of floater products, mold design, foam material as well as foam forming process are introduced.
Humidifying of gas adopts constant temperature tank and fibred humidifier to humidify the air and hydrogen. Testing of humidity adopts HS1101 humidity sensor.