7/17/02Reyco Henning -- TRD Box S Component Testing 1 TRD Box S Solenoid Valve Testing AMS TRD Meeting, CERN, July 2002 U. Becker, G. Carosi, R. Henning, M. Sekora, R. Xia.
7/17/02Reyco Henning -- TRD Box S Component Testing 2 MV100 Acceptance Testing 9 MV100’s used in Box S and 4 in Box C. Each MV100 Undergoes Tests in the Sequence: 1.Electrical Characteristics (coil resistance, inductance). 2.Leak Tightness at 50 o C and 0 o C with 3000psi pressure. 3.Endurance in Magnetic Field at Room Temperature (500 cycles with 1500 psi pressure and 5 cycles with 3000psi pressure in 600G field at two different orientations) 4.Repeat Tests 1 and 2. Test 2 is now done in a 600G Field and at 2 orientations
7/17/02Reyco Henning -- TRD Box S Component Testing 3 Magnetic Test Setup
7/17/02Reyco Henning -- TRD Box S Component Testing 4 Sample Test Form:
7/17/02Reyco Henning -- TRD Box S Component Testing 5 MV100 Acceptance Testing Status 25 out of 27 Completely Tested (94% of all tests done). 7 had leaks through valve seat at 0 o C. 1 had leak through valve seat at room temp. 1 leaked to outside at all temperatures. Recommend T > 0 o C At all Times. Electrical Characteristics + Endurance OK.
7/17/02Reyco Henning -- TRD Box S Component Testing 6 Future Test on MV100 Subset These Tests are NOT for Flight Units. Long Term Endurance (> cycles in Magnet) at High and Low T. Understand Effect of Temperature on Leak Rate across Valve Seat. Effects of Temperature Extremes on Valve (ie. Heat and Cool to Failure).
7/17/02Reyco Henning -- TRD Box S Component Testing 7 Marotta MV197 Solenoid Valves Hermitically Sealed Rated to 6000psi. 4 Used to Connect to Pressure Vessels In Hand End of July Will Undergo Similar Tests.