Sealing pressure 70KPa,72 hours : internal temperature, pressure does not drop

Room temperature : 20 ° C temperature cycling, high and low temperature (-40 ° C ~ +60 ° C) retention time is not less than four hours. 12 a small circle of internal pressure 5KPa 60KPa ± 10 times, 5KPa pressure drop less than amplitude. Immersed in the water container at room temperature stability observed 15 seconds without bubbles escape.

70KPa : internal pressure high temperature sealing, maintained at 60 ° C for 168 hours, not pressure drop

Seal : connecting cable insulation resistance, and metal pieces between pieces of metal and insulation resistance between the earth and larger than 10M Ω