Vaisala HydroMet Service Manual download pdf (Page 22)

Technical Description ________________________________________________________________

20 _______________________________________________________________________________

QBR101B Battery Regulator

The QBR101B Battery Regulator maintains the charging of the

integral 12 V battery. The charge/recharge control includes a

temperature compensation function as well as deep discharge

protection of the battery. QBR101B also allows simultaneous inputs

from both a solar panel and mains (AC) power.

QBR101B Battery Regulator

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 the ON button.

QBR101B is a rail-mountable unit allowing easy maintenance.

Transient Protection Devices

Each sensor input in the QML201 has varistor (VDR) protection

against induced transients. The maintenance terminal I/O port has

transzorb diodes in their inputs. A coaxial surge arrestor is used for

the RF signal input when radio or satellite equipment is being used.

In case of long signal cables, additional transient protectors can be

installed on the DIN-rail. These surge arrestors consist of a

combination of VDR, gas discharge, transzorb diodes and coils, thus

providing excellent protection.

These are easy to change in the field without tools. In addition, these

devices are industry standard and readily available locally, too.

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Vaisala HydroMet Service Manual Page 22