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Diagnostics
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Each
DLC3000 Series digital level controller continuously runs an automatic diagnostic routine
to monitor its own performance. If a failure in the electronics is detected, the
output will drive to a preconfigured output extreme (either 3.75 mA or 21.0 mA).
This indicates that the device is in need of correction. Similarly, an alarm
is set if the DLC3000 detects an error that renders the process variable measurement
inaccurate. If the DLC3000 is giving you incorrect information, it will tell you.
Here is a list of the alerts and alarms that come
standard with every DLC3000 Series instrument:
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High
Alarm |
High-High
Alarm |
Low
Alarm |
Low-Low
Alarm |
|
Process
Variable: |
X |
X |
X |
X |
|
Process
Temperature: |
X |
|
X |
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Electronics
Temperature: |
X |
|
X |
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Furthermore, the digital level controller can trend and store process variable, process
temperature, or electronics temperature data. This data can be continuously
monitored on line via the HART® protocol. |
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