WABCO GmbH OPTITIRE Benutzerhandbuch
4
Components
OPTITIRE
21
Counter weight
To prevent the wheel module causing an imbalance on the wheel, a counterweight
is mounted on the opposite side, see figure 4-2 "Module with counterweight",
page 21.
Axles with twin tires do not need counterweight. In this case, the wheel module of
one wheel serves as counterweight for the wheel module of the other wheel. They
are mounted opposite to one another, see figure 4-3 "Module for twin wheels",
page 21.
is mounted on the opposite side, see figure 4-2 "Module with counterweight",
page 21.
Axles with twin tires do not need counterweight. In this case, the wheel module of
one wheel serves as counterweight for the wheel module of the other wheel. They
are mounted opposite to one another, see figure 4-3 "Module for twin wheels",
page 21.
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fig. 4-2:
Module with counterweight
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fig. 4-3:
Module for twin wheels
ID code
Special identification code of each wheel module allows unique assignment of
modules to particular wheels. The wheel module will "report" to ECU using this
code. This will exclude pressure signals from other vehicles to be assigned to own
system. Code is determined when module is manufactured and cannot be changed.
This number is imprinted on the wheel module when commissioning.
modules to particular wheels. The wheel module will "report" to ECU using this
code. This will exclude pressure signals from other vehicles to be assigned to own
system. Code is determined when module is manufactured and cannot be changed.
This number is imprinted on the wheel module when commissioning.
Assignment between wheel and wheel module must be absolutely maintained tire-
change procedure. If tires were confused, OPTITIRE could not set off required
alarm when a wheel with low pressure has been wrongly assigned to an axle on
which this pressure is still permissible.
alarm when a wheel with low pressure has been wrongly assigned to an axle on
which this pressure is still permissible.
Identification code assignment to a wheel is determined during initial start-up of the
diagnostic software on commissioning, see chapter 6.6 "Start-up", page 42.
diagnostic software on commissioning, see chapter 6.6 "Start-up", page 42.
4.2
Wheel Internal Sensor (WIS)
The wheel internal sensor WIS 960 732 000 0 consists of a compound-filled plastic
unit comprising a pressure sensor, an evaluation circuit, a radio transmitter and a
lithium battery.
Battery life under normal operating conditions is minimum 10 years. If the battery is
dead the module would not transmit any longer and needs to be replaced with a
new one.
The wheel module is mounted on the rim on the backside of a specific filling valve.
Therefore it will be assembled inside the tire and is able to measure pressure and
temperature. Data transfer
Wireless transmission is made by 433 MHz signal. If pressure is constant, meas-
ured values are transmitted every 1minute , if pressure is changing, additional
messages will be transmitted.
unit comprising a pressure sensor, an evaluation circuit, a radio transmitter and a
lithium battery.
Battery life under normal operating conditions is minimum 10 years. If the battery is
dead the module would not transmit any longer and needs to be replaced with a
new one.
The wheel module is mounted on the rim on the backside of a specific filling valve.
Therefore it will be assembled inside the tire and is able to measure pressure and
temperature. Data transfer
Wireless transmission is made by 433 MHz signal. If pressure is constant, meas-
ured values are transmitted every 1minute , if pressure is changing, additional
messages will be transmitted.