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Technical data are subject to change without notice.
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SPM Instrument AB • Box 4 • S-645 21 Strängnäs • Sweden
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If the NORM No. is not acceptable, or if the measured
shock pulse pattern is not within the range of possible
signals from the bearing, the A2011 will display one
of the error codes listed in figure 16.
E2 is displayed when HR = LR (delta = 0). The cause
can be a disturbance pattern which is typical for pump
cavitation, high pressure steam, air or liquid flow, or
rubbing between machine parts.
E2 can also be displayed when the measurement is
interrupted before a measuring cycle is completed.
Possible cause is a sudden drop in signal strength
during the reading (intermittent disturbance).
Locate and try to eliminate the source. Use the probe
transducer and the earphone and measure outside of
the bearing housing. The signal is strongest close to
the source.
E3 indicates that the incoming signal is too low. Check
that the transducer is connected and the bearing is
rotating normally. Very lightly loaded bearings may
be sliding instead of rolling and produce a very low
signal.
Check the basic bearing data, your NORM No. could
be too high. A poor measuring point can also cause
this code (signal loss due to interfaces, long or bent
signal path). The measuring point may need individual
calibration with LUBMASTER.
Some types of disturbances can emit strong signals
that do not contain a HR element, and therefore cause
code E3.
Error Codes
Fig. 16
List of Error Codes
E2 Disturbance
E3 Signal too low or disturbance
E5 NORM number too low
E5 means that the pre-set NORM No. is too low. It is
either below the minimum for the probe transducer
(min. 18), or below 10.
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