SPM leonova emerald, Руководство пользователя

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D
D:22
Shock pulse measurement
Measuring SPM dBm/dBc
From the measurement window, the instrument can
be set up to perform a transducer quality line test
(TLQ) before measurement. Press the ENTER key to
enable or disable the TLQ test (1). TLQ (Transducer
Line Quality) is described on page D:17.
When the MEASURE/SAVE (M/S) key is pressed,
Leonova samples the transducer signal for two
seconds. A preliminary result is displayed in the
measurement window. The dBm shown is the ampli-
tude value of the strongest shock pulse registered
during the measuring time.
Meanwhile, Leonova keeps measuring. If it registers
stronger pulses, the peak indicator (1) will blink.
Watching the peak indicator is very important,
especially when the preliminary result indicates poor
or bad bearing condition. The lower the rpm, the
longer it can take for damaged parts to move into
the load zone and reveal their presence by strong
shock pulses.
When the peak indicator blinks, press the UP key
on the Leonova keypad. This increases the dBm in
steps of one dB. The original value is displayed in
brackets (2). Stop adjusting the dBm value when
the peak indicator stops blinking. The
DOWN key
decreases the value.
When earphones are connected in order to listen to
machine sounds, use the LEFT/RIGHT keys to adjust
earphone volume (3).
To accept the displayed result, press the ENTER or
the MEASURE/SAVE (M/S) key. The measurement
window shows the two shock values (4), the status
dot (5) and, if transducer line quality test is enabled,
the TLQ value (6). If a default measurement file was
used, the dBi value is also shown. For measuring
assignments downloaded from Condmaster in a
measuring round, the dBi is not displayed.
Save the result by pressing the M/S key, or measure
again with SHIFT + M/S.
When ‘Variable speed’ is active, the rpm must be
measured before measuring the shock values.
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