
I17 I
MH-Series DT Connector System
Installation Manual
G
6.2.2 Electrostatic painting
Various dry and wet methods of applying paint to the component
surface use electrostatic charge to paint cylinders. These methods
employ very high voltages up to 100 kV, which can damage the
electronics of position measuring systems. To prevent this damage,
it is mandatory to take the following measures during electrostatic
painting.
Attach the cylinder to the painting frame by the barrel side of the
cylinder rather than by the piston rod. The reason is that the integrated
sealing and slide rings can cause electric isolation between the piston
rod and the cylinder/sensor housing, i.e. low-impedance connection
between the painting equipment ground and the sensor housing is not
ensured.
Clean the suspension points at the painting system and all connections
used for short-circuiting conductors and connection to the painting
system ground regularly and remove paint as well as other residues, in
order to ensure low-impedance connection.
Fig. 16: Electrostatic painting
Fig. 17: Electrostatic painting of cylinders with integrated sensors
6.2.3 Painting and electrostatic charging
When using dry or powder painting methods for cylinders, powder is
applied to the component surface by means of static charge. These
methods employ very high voltages that can damage the electronics of
Temposonics position measuring systems integrated in the cylinders.
This can be prevented using the following metal protective caps.
The metal protective cap safeguards the contact pins and thus the
electronics of the sensor against electrostatic effects (high voltage).
It is important to note that:
• The material of the protective cap must be permanently electrically
conductive.
• The cap must not be of aluminum (aluminum is subject to oxidation
and can cause electric isolation).
• The metal protective cap must have an DT Deutsch connector.
• The cap must be xed up to the connector ange plate.
• Make sure that no paint particles contaminate the thread or the
contact pins.
• The thread of the protective cap must be clean and free from paint
particles and other substances at all times.
• The metal protective cap must be tightened only so that it is hand-
tight (max. 5 Nm).
• Paint particles on the cap outside are of no concern.
• Drawing examples for the protective cap are given in the
attachment.
6.2.4 Protection cap
When using electrostatic painting methods for cylinders, power is
applied to the component surface by means of static charge. These
methods employ very high voltages that can damage the electronics of
Temposonics®position measuring systems integrated in the cylinders.
This can be prevented using the following metal protective caps.
The metal protective cap safeguards the contact pins and thus the
electronics of the sensor against electrostatic effects (high voltage).
It is important to note that:
• The material of the protective cap must be permanently electrically
conducting
• The cap must NOT be of aluminum (aluminum is subject to
oxidation and can cause electric isolation)
• The cap must get pressed properly up to the connector locking ring
respectively to its straps
• Make sure that no paint particles contaminate the contacting area of
the cap nor the contact pins
• The contacting surface of the protective cap must be clean and free
from paint particles and other substances
• Paint particles on the cap outside are uncritical
A detailed drawing of the protection cap is attached at the end of this
document. A CAD model of it can be provided by Temposonics.