Fluke 810 User Manual page 134

810
Users Manual
7. How do I orient the sensor?
The Tester uses the driveshaft (depicted as a
thick red line in the display) as the primary frame
of reference. Orient the sensor to the driveshaft
using the sensor cable where it exits from the
sensor, telling the Tester whether the cable is
parallel or perpendicular to the shaft.
Quick Tip:
The first time you take a measurement, draw or
paint a line on the machine indicating sensor
measurement location, with an arrow indicating
sensor orientation. This will aid in ensuring the
consistency of future measurements.
8. Will the diagnosis be impacted if I cannot
reach all the measurement locations?
You need to take at least one measurement
from each component in the drive train for
proper diagnosis. If a component is not tested
(except belts and couplings), the Tester cannot
diagnose the untested component.
A-6
9. When should I use the tachometer?
Using a tachometer is highly recommended for
Variable Frequency Drives (VFDs) DC Motors
and when RPM data is unavailable for regular
drives. Reflective tape placed on the rotating
equipment is required in order to capture
readings with the tachometer.
10. What should I do when the Tester gives an
accelerometer overload error?
Accelerometer overload is a common diagnostic
system error. Usually a temperature transient or
a loose sensor mounting can cause this error.
To isolate the problem, first eliminate bad cables
and improper sensor mountings. If the problem
is still not resolved after eliminating these issues,
please contact your Fluke service center.