METROTEC
10
6
Measured Value Output
The measuring module can output the measured value in linear or logarithmic mode. The
standard setting is "linear". This setting can be changed on location. See section "Definition of
analog outputs".
6.1
LIN Measured Value Output
The linear output of measured values implicates the assignment of the measured values to
either the 0 to 20 mA or the 4 to 20 mA output in linear mode. This assignment is permanent
and can only be changed on location by means of the "METROTEC U15 App" for Android
Smartphone
.
6.2
LOG Measured Value Output
The logarithmic output of measured values implicates the assignment of the measured values
to either the 0 to 20 mA or the 4 to 20 mA output in logarithmic mode. This assignment is
permanent and can only be changed on location by means of the "METROTEC U15 App" for
Android Smartphone
.
The output can take on values between 10
0
and 10
–30
. The values represent the logarithm of
the oxygen partial pressure. This presentation helps to output values stretching over many
powers of ten.
Conversion table
%
bar
ppm
log (x)
10
x
100
1
1000000
0,00
10
0
10
0,1
100000
-1,00
10
-1
1
0,01
10000
-2,00
10
-2
0,1
0,001
1000
-3,00
10
-3
0,01
0,0001
100
-4,00
10
-4
0,001
0,00001
10
-5,00
10
-5
0,0001
0,000001
1
-6,00
10
-6
0,00001
0,0000001
0,1
-7,00
10
-7
0,000001
0,00000001
0,01
-8,00
10
-8
The measurement module can process values between 10
0
and 10
–30
.
