Wireless Sensor Device Manager
Data Collection Scheduling
SKF Wireless Machine Condition Sensor
45
Service Manual
Note that in the preceding sensor setup table we recommend a setup that polls the
sensors every 24 hours for waveform data, and that polls the gateway’s cache every
hour for vibration overalls and temperature data (using burst mode). Collecting overalls
and temperature data hourly on noncritical machinery may seem excessive to those
familiar with traditional vibration monitoring technologies. However, it is important to
realize that HART process information systems working with OPC co
mpliant host
servers typically update their data in minutes, and that vibration / temperature data
stored in the gateway’s cache may be used by these existing process information
systems. Bursting the overalls to the gateway cache hourly makes sense in these
scenarios.
If you wish to extend your trend intervals, you may choose to extend the
Sensor
>
Data
Collection
tab’s
Period
for the Envelope Pk-
Pk and Velocity RMS / Temperature
measurements to 12 hours, 24 hours, weekly, etc. (an example is provided below).
WARNING!
The
Use Cache
check box must be selected in order for burst mode to
work. Device Manager will not retrieve the sensors’ measurement results from the
gateway’s cache if this function is disabled. You must turn off
Use Cache
temporarily
when you are making any revisions to the data collection schedule or collecting data
manually. Remember to enable it again for normal operation when you are done.
To find the Use Cache check box:
Select the
gateway
in the Device Manager
plant hierarchy list.
Select the
Admin
tab.
The
Use Cache
check box is at the bottom
of the Admin tab.
WARNING!
You must also disable the Batch Service temporarily when you are
making any revisions to the data collection schedule or collecting data manually.
Remember to enable it again for normal operation when you are done.
To stop the Batch Service:
Select the
Plant
in the Device Manager
hierarchy list.
The Plant will display the
Batch Service
Management
tab. Click
Stop
if the Batch
Service is running.