In-Situ Tube 300R Telemetry System - Manual (Page 42)

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-2 10 -3 ALARM
-2 10 -2 OK
-8 -3 -2 ALARM
-8 -3 -5 OK
-8 -3 -9 ALARM
-8 -3 -8 OK
Incremental Mode
In Incremental Mode, alarms and warnings occur when the difference between two
consecutive measurement values is less than the minimum threshold value or greater
than the maximum threshold value. This difference means the alarm threshold is a
slope instead of a fixed value.
Minimum
Threshold
Value
Maximum
Threshold
Value
Current
Measurement
Value
Previous
Measurement
Value
Measurement
Delta
Result
10 60 200 150 50 OK
10 60 199 200 -1 ALARM
-50 50 300 260 40 OK
-50 50 300 200 100 ALARM
-50 50 200 240 -40 OK
-50 50 400 500 -100 ALARM
-6000 200 0 1000 -1000 OK
-6000 10 130 110 20 ALARM
-6000 10 130 125 5 OK
-10 8000 150 165 -15 ALARM
-10 8000 1200 0 1200 OK
Tips:
l
Minimum Threshold values should be negative, otherwise a decreasing
parameter will always generate an alarm.