Optibelt TT 3 - Carrying out of Measurements; Measuring without belt parameters; Measuring with belt parameters; Measuring with belt parameters from the Optibelt data bank

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optibelt TT 3
3.1 Measuring without
belt parameters
After it is switched on, the device
is immediately ready to measure
(display “A” for “active”). The
tensioned belt is brought into
vibration by touching with a nger or
an object. Then, you hold the sensor
head over the belt drive to measure
the frequency. To achieve the
ma ximum possible accuracy, the TT 3
attempts to carry out 4 consecutive
measurements. The number of
successfully performed measurement
cycles is shown on the right next to
the “A”. If there are less than
3 measurement cycles, the process
should be repeated. The completion
of a measurement cycle is conrmed
both by acoustic and by visual
signals. The frequency measured is
shown in the upper line of the display
(see diagram 1).
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Carrying out of measurements
3.2 Measuring with belt
parameters
The Optibelt TT 3 FrequencyTension
Tester makes possible a comparison of
the actual and the targeted static belt
tension.
This static belt tension is calculated
according to the following formula:
T = 4 x k x L
2
x f
2
with:
• T = static tension [N]
• K = meter weight [kg/m]
• L = length of span [m]
• F = frequency of the belt [Hz]
In order to evaluate the measurement
result qualitatively, the TT 3 must also
know the nominal static belt tension.
3.2.1 Measuring with
belt parameters
from the Optibelt
data bank
The product group and the prole
from the Optibelt data bank are
selected using key 4.
The following are stored:
• Optibelt V-belts
– Optibelt SK Wedge belts
– Optibelt VB Classical V-belts
– Optibelt S-TX Raw edge,
moulded cogged V-belts
• Optibelt Timing belts