Siemens SITRANS L Pointek ULS200 - Low Level Alarm Switch Example

Pointek ULS200
Operating Instructions, 01/2019, A5E32268616-AB 29
6.4 Low level alarm switch
This application uses the device to provide one or two low level alarms.
If the material can fall below the unit's range, the device loses the echo, and if prolonged,
defaults to fail-safe operation. The fail-safe default should be set to suit the application.
Fail-safe = 1, 2, or 3
Fail-safe = 2 or 3
① Low-low (e.g. 4.5 m)
② Low (e.g. 3.5 m)
③ Blanking (e.g. 0.5 m)
④ Range limit (e.g. 5.5 m)
① Low-low (e.g. 4.5 m)
② Low (e.g. 3.5 m)
③ Blanking (e.g. 0.5 m)
④ Range limit (e.g. 5.5 m)
Application adjustments
Alarm function
• 3 - low/low-low alarm
• 5 - low/LOE alarm
Alarm setpoint
Set the low and/or low-low alarms to the desired
values.
Fail-safe alarm
• 1 - high
• 2 - low
• 3 - hold