Wireless Sensor Device Manager
Data Collection Scheduling
SKF Wireless Machine Condition Sensor
51
Service Manual
Figure 29
.
Command 9 Burst Mode –
Data Collection
Tab.
Figure 30
.
Overall Trending Measurement Schedule.
Estimating the Time to Capture Waveforms
How many waveforms can a single instance of Device Manager collect within 24 hours?
Sampling is fast; sending and receiving data is much slower.
It takes about three minutes to collect a waveform from a sensor with the fast pipe
designation that is a single hop from the gateway. That equals 20 waveforms per hour
or 480 waveforms per day. Therefore, if there are more than 480 sensors in the
network, a single instance of Device Manager may not be able to collect all the
waveforms within a day. This speed reflects a limitation of the system with a single
instance of Device Manager.
Each hop adds about three minutes (with the fast pipe), therefore two
hops =
about six
minutes; three
hops =
about nine minutes. The number of hops taken can be found in
the gateway’s Diagnostics Details web page or the Network Statistics Report.