Troubleshooting guide

175
Reference Manual
00809-0100-4308, Rev BA
Appendix D: Configuration Parameters
December 2014
Configuration Parameters
User Defined Alert
Lost Measurement
Enable User Defined Alert If the alert will be enabled or not.
Variable The variable selected for the alert.
Alert Direction Whether the alert will be triggered above or below the
variable's value.
Limit The variable value that will trigger the alert.
Note
Alert Limit values must be outside the Upper Null Zone, the
Blind zones, and areas close to the Blind Zones with reduced
accuracy.
Deadband An area of a variable's range where no action occurs to
prevent alert from activating/deactivating too quickly.
Lost Measurement Behavior Configure level value to report if measurement is lost
unexpectedly. Choose one of the following actions:
Number of Measurements to
Hold Level
The number of measurements the device will hold the current
level if level measurement has been lost. Then it will output
level according to Lost Measurement Behavior, if still lost.
For an application where problems with lost measurement
due to noise or weak surface echoes are experienced, this
parameter value could typically be increased.
The Hold Time value presents for how long the device will
hold the current level. The time the current level will be held is
calculated out of a combination of both Number of
Measurements to Hold Level and the Update Rate.
Note
Make sure you have enough safety margin in your system to
manage a delayed condition.
Lost Measurement
Behavior
Description
Alarm (NaN Value/
Bad Status)
If the measurement is lost, the level
value will report:
“Not a Number / Bad Status”.
Output Full Tank If the measurement is lost, the level
value will correspond to full tank.
Output Empty Tank If the measurement is lost, the level
value will correspond to empty
tank.