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5.0 Operating tips
Here are some procedures and “best” practices that may ease use or help increase the reliability
of your belt tensioning efforts.
Take your tension reading as close to the centre of the selected span as practical.
Use the longest belt span that can be readily accessed. Minimum useable span length is equal
to 20 times the belt tooth pitch for synchronous belts and 30 times the belt top width for “v”
configuration belts. Using too short a span yields indicated tensions that may be much higher
than actual belt tension due to effects of belt stiffness.
When possible, orientate the sensor head with the long edge of the sensor parallel to the centre-
line of the belt. This tends to eliminate any non-reading conditions due to aiming error.
On new installations, rotate the system by hand at least one full revolution of the belt to seat
and normalize the components.
If the top surface of the belt is not accessible, try to beam the sensor against the edge of the belt.
The inside surface of the belt is equally acceptable.
The meter will not give a measurement for a belt under extremely low tension. Simply increase
the drive tensioning until the meter responds. The meter will beep to indicate that a reading has
been taken.
It is good practice to take three successive readings. This will show the consistency of your
methods. If the readings vary by more than 10% reassess your measurement technique.
Taking multiple readings at different belt orientations may help you identify problems with other
drive components. Tension excursions are indicative of component problems such as a belt shaft,
poorly mounted sprocket or pulley or an irregular pulley groove.
When tensioning an array of multiple V-belts, use a single belt toward the centre of the array.
Содержание PHL FM 10/400
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