Monitoring Station SV 279 PRO
18
2.2.
Optional accessories for SV 279 PRO system
2.2.1. SV 33A
– Class 1 Acoustic Calibrator
For result verification purposes, most norms and
standards impose the requirement to calibrate the
measurement channel before and after each
measurement or measurement session.
An acoustic calibrator is a device which produces an
acoustic pressure of defined level and frequency.
SV 33A
Acoustic Calibrator produces an acoustic
pressure of defined level 114 dB at a frequency of 1
kHz.
2.2.2. SB 272 - External rechargeable battery
SB 272
is an external source of DC power for the
monitoring station. SB 272 includes a Lead-Acid
rechargeable battery (33 Ah, 12 V) and is dedicated
for outdoor use because of its waterproof case. The
battery capacity enables up to three times longer
operating time of the monitoring station in
comparison to the station
’s internal 17 Ah battery.
The SB 272 set includes the SB 273 indoor charger
and a cable for connection between SB 272 and the
monitoring station case.
SB 272 has one connector for charging and for power supply and therefore cannot be
used as a power supply for the monitoring station and at the same time be charged
itself (as the internal station battery with solar panel or external power supply).
Note: SB 272 cannot be charged by the monitoring station SB 270
power
supply!
Note: Battery is not restricted for air, surface and water transport. Classified as
non-hazardous material (IATA/ICAO Special Provision A67, DOT-CFR Title 49
parts 171-189, IMDG amendment 27).
Note: It is necessary to charge the battery pack after discharge, otherwise the
battery may lose its capacity
.
Note: It is recommended to charge the battery at least every 6 months in the
case of the station not being used.
