Symposii 
Rainlo; 
D.de Hoo 
Internationa, 
1. INTRODUC' 
The rainlog 
gers were i 
for Aerosp 
Enschede, e 
by Siemens 
The instr 
over long 
intervals f 
ing mainten 
test statio: 
er with th> 
new scienti 
The press' 
processor t 
memory blo< 
Eprom is 11 
personal co 
reader". De 
suits can b 
Two types 
same electi 
type of sen; 
sensor; prei 
standard rai 
range for p 
is equivelei 
The precii 
0.2 percent 
The resolut 
the 4 bar-t 
be set betwi 
is standard 
operational 
The logge 
durability, 
to the inte: 
able memory 
ment of the 
cylinder to 
cording int 
not availab! 
transportim 
where the n 
there is les 
1.1 Preslog 
River level 
To record i 
in the rive 
a maximum p 
tions witho 
sand and g 
logger must 
block is re 
An addition, 
trie correc 
area and t 
loggers.