DeltaOHM HD2011NMT, Operating Manual

Page: 17 / 26

HD2011NMT
- 17 -
V1.2
6 ALARMS
The data logger can report:
• the exceeding of the measurement thresholds defined by the user;
• the decrease of the battery charge level below certain thresholds (75%, 50%
and 25%);
• the excessive memory usage on the server (greater than 50% or 75% of available
space).
With regard to the measurement alarms, the following are available:
• an alarm for an acoustic measurement downloaded on the server (the generation
of this alarm depends on when the measurements are donwloaded);
• an alarm for a real time acoustic measurement;
• an alarm that can be associated with one of the available environmental parame-
ters (only with METEO option).
It is possible to configure how long the measurement must remain above the set thre-
shold before generating the alarm and how long the measurement must remain within
the deactivation threshold before turning off the alarm.
The alarm can be reported by activating the alarm output (only for the exceeding of
the measurement thresholds) and/or sending e-mails, up to 4 recipients, with user
configurable text.
The alarm contact can be configured as normally open or normally closed.
The choice of the measurements to be associated with the alarms and the configura-
tion of the alarms is carried out with the help of Noise Studio software (see the in-
structions of the software for details).