NMS044 Reference Manual
EPS/NMS044 Features
1-2
1.2 EPS/NMS044 Features
Acoustic Measurement
The area sound is measured with a prepolarized microphone and
preamplifier that are environmentally protected in a shroud on a
telescoping pole, which is mounted to the case.
Portable
The NMS044 can be deployed, before, during, or after you setup the
831C to make your measurements.
Low Power Consumption
LEARN MORE
To learn more
about power consumption,
see “NMS044 Power Draw” on
page A-2.
A 12 V battery powers the system, which is charged by a solar panel
through a charge controller. The system can run, without recharging,
for about a week. Sunlight needed to reboot the system after a power
loss is minimal and full charge is reached in only a few hours.
Continuous Sound Measurements
If the batteries are ever completely depleted, the system will shut off
safely. When the battery is recharged sufficiently, it will power on and
the measurement will continue. This feature runs without any
prompting from the user.
Connectivity
Connect to a cellular network using the RV50 and access the 831C to
view/download data from a PC at anytime. Control the system from a
web browser from wherever you are.
1.3 Components
CCS051
•
Environmentally protected case with foam inserts, attachment
bracket, and cable gaskets
•
Metal Case Plate
•
Power distribution block
•
Rubber Stoppers - Depending on which preamplifier is used,
one is used for CBL222-08 or CBL222-20, and one is used for EXC
cables.
•
Silicon grease for cable glands
