7.4 Alarms / alarm acknowledgement
It is possible to set lot and high threshold limits for alarm and hysteresis values for these
limits. Typically the underpressure limit is set to -5.0 Pa (asbestos demolition
underpressure limit) and in case this threshold limit is exceeded the instrument will
trigger an alarm. The sensitivity of alarm trigger can be adjusted with following
parameters
Measurement result averaging: More averaging filters out fast underpressure limit
violations
Alarm delay: The alarm will be triggered only after the given delay after
underpressure limit violation. In case the measured underpressure returns to right
side of the threshold limit during the alarm delay then there will be no alarm.
MIRAN DL-P1 supports following alarm outputs
Red LED panel in the instrument (always active)
Beeper (can be disabled)
SMS alarm (only with active GSM subscription, can be disabled)
Email alarm (only with active GSM subscription, can be disabled)
MIRAN ALARM-2 external alarm supports following alarm outputs
Red LED panel (always active)
Beeper (can be disabled)
Alarm acknowledgement can be set to either manual or automatic. Automatic
acknowledgement means that the alarm goes off when the differential pressure achieves
target range (including hysteresis). Manual alarm acknowledgement means that the
alarm continues until it is acknowledged by hitting ENTER -key from the touch keypad.
11/2017 Pietiko Oy p. 02 251 4402
14
