Technical data

Chapter 2 __________________________________________________________ Main Components
VAISALA________________________________________________________________________ 19
In hydrological application where the equipment is frequently
installed in small huts built e.g. over the stilling well, the radiation
shield is not necessary.
For future needs, the ENC542PLM enclosure has spare space reserved
for optional devices.
Bottom View of the ENC542PLM enclosure with extended
meteorological configuration, all connectors are labeled
All sensors, power supplies and communication devices are connected
to the equipment inside the enclosure via environmentally sealed
connectors.
The protection class of all connectors is IP66 as a minimum. Each
connector is identified individually with a label. The enclosure used in
hydrological systems is normally economized for these applications.
The atmospheric pressure sensor is located on the CPU board of the
QML201 Logger. There is a static pressure head for venting out the
pressure sensor, thus minimizing the wind effect on the pressure
measurement.
There is space for future expansion by installing new sensors and/or
communication devices both in the CPU’s sensor inputs and in the
enclosure.