Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
PC Vibration Measurement System VibroMetra

Limits

 
The measurand can be compared with warning and alarm limits. These limits can be displayed as lines in the diagram.
 
Limits
1

Channels

 
1. Channels
All settings can be entered independently for each channel. The number of tabs depends on the number of active channels.
2

Alarm limit

 
2. Alarm limit
The alarm limit is entered in measuring units according to the channel settings.
3

Warning limit

 
3. Warning limit
The warning limit is entered in percent of the alarm limit.
4

Draw lines

 
4. Draw lines
If the checkboxes are activated the alarm limits will be drawn as lines in the diagram.
5

Alert

 
5. Alert
When the measuring signal crosses a limit line VM-PLOT can perform the following actions:
  • Saving the measured data on disk
  • controlling external alarm devices
 
 
6

Logic combination of alarms

 
6. Logic combination of alarms
 
Each channel may have the following conditions:
  • below warning limit:      OK
  • above warning limit:      Warning
  • above alarm limit:         Alarm
 
These channel status conditions can be combined to an overall status (channel O) by means of logic operations.