Measurement Procedure; Crossing Specifications - Bosch TTM 2104 Original Instructions Manual

en | 38 | TTM 2104 / TTM 2204 | Measurement procedure
6.

Measurement procedure

6.1 Switching on the TTM 2104 / TTM 2204
Switch on the power supply for the TTM 2104 / TTM 2204 at the
main switch of the electrical cabinet.
 After 30 seconds, the lighting of both measuring
units must flash 3 times, and then stay lit.
"
This means that the device is ready for operation.
i
As soon as an object enters the detection zone
some centimeters above the glass plate, the lighting
switches to measurement mode (the light is brighter
now).
i
Run a test drive to check the quantity measurement
system.
6.2 Calling up the TTM 2104 / TTM 2204 software
1. Start the web browser (tablet, PC, Smart TV).
2. Enter the IP address of the "Master" measuring unit
configured during installation in the address input
box.
3. Make the displayed page the home page (see
browser online help).
i
Once the TTM 2104 / TTM 2204 software has been declared
the home page, it is displayed automatically when
starting the web browser or selecting the home
button.
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6.3

Crossing specifications

¶
Heed the following vehicle data:
Function
Number of axles
Axle load
Wheel load
Track width
Rim width
Tread depth
Ground clearance
Height deviation vehicle wheels left
to right
Crossing speed
i
With a center distance of 2.5 m, crossing at
0.5 km/h takes 21 s, crossing at 8 km/h takes 1.6 s.
i
For heavily lowered vehicles: Cross the TTM 2104 / TTM 2204 at
low speed to prevent the undercarriage from hitting
the ground.
¶
Clean soiled vehicle tires (mud, snow, stones in the
tread grooves) prior to the crossing.
¶
Check cleanness of the TTM 2104 / TTM 2204 glass plates.
Clean glass plates, if needed.
i
Dirty glass plates will falsify the measurement.
¶
Crossing in direction of travel, as centered as
possible.
¶
Crossing at steady speed. Stopping is not required.
¶
The time lag between the crossing of the first and
the crossing of the second axle must be below 10
seconds.
¶
After the crossing, keep driving or switch off the
motor.
i
If the vehicles is stopped with a running motor and
the exhaust tailpipe above the diagnostic opening,
this may cause the glass plates to fog.
i
The tread depth varies across the tire diameter.
That is why observational measurement value errors
occur for repeated crossings.
Specification
2
up to 4 t
up to 2 t
1080 mm - 1820 mm
110 mm - 300 mm
0.5 mm - 8.0 mm
min. 110 mm
max. 30 mm
0.5 km/h - 8 km/h
Robert Bosch GmbH