7. F400: Manage the alarms
Three alarm modes are available:
• Rising edge (1 threshold): the alarm goes off when the measurement exceeds the threshold and stops when it is
below the threshold
• Falling edge (1 threshold): the alarm goes off when the measurement is below the threshold and stops when it
exceeds the threshold.
• Monitoring (2 thresholds): the alarm goes off when the measurement is outside the defined low and high
thresholds.
When an alarm goes off, it is possible to acknowledge it pressing OK key on the transmitter: the audible alarm, if it is
activated, turns off and the displayed value blinks during the acknowledgement duration (from 0 to 60 minutes). At the end
of the acknowledgement duration, if the transmitter is still in alarm state, the audible alarm is reactivated.
It is possible to set 3 different alarms:
• F400 folder corresponds to the alarm 1 setting
• F410 folder corresponds to the alarm 2 setting
• F420 folder corresponds to the alarm 3 setting
The alarm setting procedure explained below corresponds to the alarm 1 setting. For the alarms 2 and 3 settings, go to the
corresponding folder and perform the same procedure as for the alarm 1.
The transmitter is powered on.
➢ Press OK.
➢ Enter the activation code (see page 9).
➢ Press OK.
➢ Press Up key to go to F 400 folder then press twice OK.
This folder is about the alarm mode.
➢ Press Up or Down key to select the required alarm mode:
F400: Manage the alarms 17
Rising edge
Falling edge
Measurement (m) > Threshold (S) during the time-delay T1 → Alarm
activation
Measurement (m) < Threshold (S) - Hysteresis (H) during the time-delay
T2 → Alarm deactivation
Measurement (m) < Threshold (S) during time-delay T1 →
Alarm activation.
Measurement (m) > Threshold (S) + Hysteresis (H) during
time-delay T2 → Alarm deactivation
Monitoring
The alarm goes off when the measurement is outside the low and
high thresholds.
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