Configure
In this menu item you can set the details of the alarm like it alarm value(s), how
the alarm is reset, Alarms delays, hysteresis and more. For more details see next
page.
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Flow high
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Flow low
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Flow window
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Totalizer
4.11.2.2. Function Alarm Menu
Under the function alarm item you define the functionality of the alarm.
Flow high (Default)
With this function the alarm gets activated if the flow goes over a predefined
value set in the threshold by the customer.
Flow low
With this function the alarm gets activated if the flow is under a predefined
value set in the threshold by the customer
Flow window
With this function the alarm gets activated if the flow is outside a “Window” that
is predefined by the customer. For example if upper threshold is set to 5 and
lower threshold to 4 the alarm will get active if flow is lower than 4 or higher
than 5.
Totalizer
The compact has 2 build in totalizer. One is permanent and is non-resettable.
The second one is a resettable totalizer. You can bring it back to zero (see
4.11.3
Totalizer
). The totalizer alarm works with the resettable totalizer. You enter a
value in the threshold and once that value is reached the alarm is activated.
4.11.2.3. Configure Alarm Menu
Once you defined the function of an alarm you can define the details of the operation
in this menu
Numerical entry screen
If you have to enter numeric values (Like an alarm value (Threshold)) you will
see a little keyboard on the screen where you can enter a numerical value. The
decimal point is located behind the number display field. Once you entered a
decimal point followed by another number, the dot changes into an “E”. If you
press this you can enter the scientific notation, for instance 1.0E-3 = 0.001 or
2.2E2=220.
Threshold
Threshold is the activation value. If you for instance selected a high alarm, the
alarm will be active when the flow value comes over the Threshold value. The
value is entered in flow engineering values that the unit is set for at that
moment (for instance in mln/min). If you change the engineering units of the
unit in a later stage, the Threshold value will automatically adjust itself to the
new flow unit.
Please note that there is no limit to the value you can enter as a
threshold. Please double check your entered value.
Hysteresis (Default: 0=OFF)