Technical Information
KPP PPU
11029257
• Rev BB • July 2013
6
Improvements
Continuous improvements to reduce environmental effects 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 filled 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 firm compound.
y
External housing was changed to a zinc chromate finish.
F Revision (June 1999)
y
The internal wire to the circuit board joint was modified.
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.