Page 70 - Condition Monitor User Manual

Configuring a Monitor

• Stay away from the top and bottom edges of the shaft trigger waveform. When close
to the edges, a slight variation can cause the system to miss shaft trigger pulses.
• Set the threshold at a part of the signal that is more vertical (changing rapidly) rather
than a part of the signal that is more horizontal (changing slowly). When triggering
on a slowly changing signal, this may introduce jitter and susceptibility to signal
noise.
• Stay away from any area where there is noise on the signal. If noise passes through
the trigger threshold, it could cause extra trigger pulses to occur.
If the rotation speed is reported as stable and at the proper speed, then configuration is
complete. Otherwise, continue adjusting the trigger threshold and re-acquiring data until the
results are good.
There are some additional controls that may help find the appropriate trigger level:
• The zoom controls can be used to zoom in on the waveforms to get a better idea of
what the shaft trigger signal looks like.
• The ‘Automatically scale voltage’ checkbox will automatically adjust the vertical scale
of the shaft trigger signal so that it is easier to set a good trigger threshold, and easier
to see any voltage fluctuations in the signal.
• The ‘Find Trigger Level’ button will run a series of measurements to set the trigger
level automatically, although realistically it will be faster to do it manually.

7.5. Flux Technology Settings
Flux technology configuration is different depending whether the monitor being
configured is an original GuardII or a GuardII+.

7.5.1. Original GuardII General Flux Configuration
Press the ‘Flux’ button on the ribbon and then select ‘General’ to begin Flux
configuration.
• During first-time configuration of a new monitor, the Flux channel will be disabled;
press ‘Enable channel’ to activate it.

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