SKF PHL FM 10/400, Руководство пользователя

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6.0 Meter range
The SKF Belt Frequency Meter is capable of
measuring belt vibration frequencies between
10 Hz and 400 Hz.
If the measured frequency is below 10 Hz,
the meter will display “10.00” briefly and
then change to “000.0”.
If the measured frequency is above 400 Hz,
the meter will display “400” briefly and
then change to “000”.
On multi-shaft (three or more shafts) it may be possible to get valid measurements by selecting a
different belt span for measurement. If the measured frequency is below 10 Hz choose an avail-
able shorter span. If the measured frequency is above 400 Hz choose a longer span if available.
Based upon the measured belt frequency, the meter is capable of calculating belt tensions up
to 9 990 N (2 200 lb.). When these limits are exceeded the meter will react as previously
described.
Belt tensions greater than these values are unusual. It is therefore advisable to check that the
span and mass parameters have been entered correctly. If they are found to be correct then
check the calculation of your target values. If everything looks correct then this drive is simply
beyond the capacity of the SKF Belt Frequency Meter. The drive will have to be tensioned by
traditional force and deflection techniques.
Special Note:
Tensioning a drive generally involves moving one component shaft with respect to another.
On some drives, especially larger installations, tensioning the drive will involve sufficient move-
ment that the span length is appreciably altered. Frequency (Hz) values will remain accurate but if
a precise tension value is to be calculated it may become necessary to update the span input to
reflect the new shaft spacing.
N
Hz
lbs
N
Hz
lbs
A '0000' newton reading
accompanied by four
'beeps' indicates the
result is out of range
A '0000' pound reading
accompanied by four
'beeps' indicates the
result is out of range
BEEP
BEEP
BEEP
BEEP
BEEP
BEEP
BEEP
BEEP