Vaisala AWS330 - Manual (Page 98)

User's Guide ______________________________________________________________________
96 __________________________________________________________________ M211296EN-B
Transient Protection Devices
Each sensor input in the QML logger has varistor (VDR) protection
against induced transients. The local data and Ethernet ports have
Transzorb diodes in their inputs. For maintenance information, see
section Replacing Components on page 195.
Battery Regulator
Battery Regulator QBR101C maintains charging of the integral 12 V
battery. The charge/recharge control includes temperature compensation
function as well as a deep discharge protection of the battery. QBR101C
also allows simultaneous input from both AC (mains) power and solar
panel, if one is used.
Also included are LED lamps for indicating Battery OK/Low and
Charge/Recharge conditions. In order to maximize autonomy time, the
lamps are activated only while pressing an ON push button. QBR101C is
a rail-mountable unit, allowing easy maintenance.
0105-007
Figure 52 Battery Regulator