SECTION 3. INSTRUMENTATION INSTALLATION
3-13
MD9
SC12
CSI
DATALOGGER
METDATA1
COMPUTER
SC532
MD9
SC12
MD9CT
COAX
CABLE
FIGURE 3.3-9. MD9 Multidrop Interface at the Computer and at the MetData1
3.4 SEALING AND DESICCATING THE
ENCLOSURE
The MetData1 enclosure is supplied with desiccant
packs. The desiccant maintains a low humidity in
the enclosure to minimize the chance of
condensation on the instrumentation. The
desiccant must be changed periodically. Place
one or two desiccant packs into desiccant holder
just before leaving the installation site. Be sure to
close the lid. A desiccant change is indicated
when the internal MetData1 humidity sensor
measures 30% or higher. Keep unused desiccant
tightly sealed in an airtight container.
2
1
4
3
6
5
8
7
AC/SOLAR
SERIAL #:
SERIAL I/O
FIGURE 3.4-1. Inside MetData1 Lid
Desiccant
Holder