Technical Information KPP PPU
11029257 • Rev BB • July 20136
Improvements Continuous improvements to reduce environmental eects of moisture and corrosive liquids
found in some mobile environments include:
D Revision (June 1996)
y Use of a potting compound around the lead wires exiting the housing was eliminated.
– The sealing now works like an O-ring:
y The internal cavity of the housing was lled with a silicone oil.
y The wires now pass through a molded rubber piece compressed between two plates.
E Revision (September 1996)
y Silicone oil was replaced with a rm compound.
y External housing was changed to a zinc chromate nish.
F Revision (June 1999)
y The internal wire to the circuit board joint was modied.
y A new seal received and the circuit board assembly was improved.
G Revision (February 2002)
y The housing is now machined from a solid block of aluminum-silicone-bronze.
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