User`s guide

Chapter 2 __________________________________________________________ Product Overview
VAISALA_______________________________________________________________________ 23
All sensors, power supply and communication devices are connected
via environmentally sealed connectors to the equipment inside the
enclosure. Each connector is identified individually with a label.
The atmospheric pressure sensor is located on the CPU board of the
AWS Logger. On the enclosure there is a static pressure head for
venting out the pressure sensor, thus minimizing the wind effect on the
pressure measurement.
Accessories
Sensor Multiplexer
0402-005
Figure 7 Sensor Multiplexer QMU101
The QML201 logger provides the possibility to extend the measuring
capacity of MAWS with the optional Sensor Multiplexer QMU101. It
is designed to increase the number of the analog measurement channels
with eight 16-bit analog channels and two 12-bit analog channels. The
module increases the measuring capacity with ten differential
measurements or alternatively with 20 single-ended measurements.
The module interfaces to the logger via the RS-485 line. It is located
inside the enclosure under the logger. The module conforms to the same
environmental immunity and emission standards than the logger.