Aalborg Vortex Insertion - Manual (Page 59)

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Vortex Flow Meters are equipped with a self-diagnostic alarm Event Register
which is available via digital interface and on screen LCD indication.
The following diagnostic events are supported: Table 5.1
Event
Number
Diagnostic Alarm Event Description
LCD bit
Code
1 CPU Temperature too High 0
2 Vortex Frequency above High Frequency Cut Off 1
3 High Flow Alarm 2
4 Low Flow Alarm 3
5 High Fluid Temperature Alarm* 4
6 Low Fluid Temperature Alarm* 5
7 High Fluid Pressure Alarm* 6
8 Low Fluid Pressure Alarm* 7
9 Totalizer#1 exceed set event volume limit 8
10 Totalizer#2 exceed set event volume limit 9
11 Optical Pulse Output Queue overflow A
12 Flow Turbulence B
13 Flow rate below Low Flow Cut Off setting C
14 Event Log File overflow D
15 Data Log overflow E
16 One or more of the 8 System Log Events was registered F
NOTE: Any Alarm events that may have occurred (Event 0 to Event F)
are stored in the internal register. All detected events remain stored
until the register is manually reset (by pressing ENTER key or by
means of the digital communication interface). The Alarm Event
Register is mapped to the SRAM (volatile memory). In case of power
interruption the Event Register will be automatically reset.
,
a) Event Register Status
Each alarm event has fixed designated position on the LCD screen. Most signifi-
cant event code (F) is set on the right side of the LCD and least significant event
code (0) is set on the left side of the LCD. If event is not present (not active) it is
represented on the LCD as dot (.) character. If event is present (or was detected
in the past) it is represented on the LCD with corresponding character. A typical
display with Alarm Events Register Status without any detected events is shown
below.