M-20 Operation And Maintenance Manual
83550-003-001 Revision C
2008-01-03
11
Item
Name
Item Range
Default
Description/Function
“CO2 From”
0ppm
to
“CO2 To” - 500ppm.
0ppm
Adjust the lower ppm point for the analog
signal output in steps of 50ppm.
NOTE:
This setting is limited to “CO2 To” minus
500ppm. If you want to set it to a certain
value and scrolling up “gets stuck”, go to
the “CO2 To” setting and set it higher
first.
“CO2 To”
“C500ppm
to
5000ppm
2500ppm Adjust the upper ppm point for the analog
signal output in steps of 50ppm.
NOTE:
This setting has a lower limit of “CO2
From” plus 500ppm. If you want to set it
to a certain value and scrolling down “gets
stuck”, go back to the “CO2 From” setting
and set it lower first.
“Sig From”
0.00V to 10.00V
or
0.00mA to 20.0mA
NOTE:
“Sig From”
may be set
higher or
lower than
“Sig To”.
4.0mA
Adjust the signal output level at “CO2
From” ppm in steps of 0.05V or 0.10mA.
NOTE:
The units depend on the setting of
“JumperJ3” above.
NOTE:
Please maintain at least 4.00V or 8.00mA
between “Sig To” and “Sig From” for
proper operation of the output signal.
“Sig To”
0.00V to 10.00V
or
0.00mA to 20.0mA
NOTE:
“Sig To” may
be set higher
or lower than
“Sig From”.
20.0mA
Adjust the signal output level at “CO2 To”
ppm in steps of 0.05V or 0.10mA.
NOTE:
The units depend on the setting of
“JumperJ3” above.
NOTE:
Please maintain at least 4.00V or 8.00mA
between “Sig From” and “Sig To” for
proper operation of the output signal.
“Clipping”
“Enable” or “Disable” “Disable”
With clipping set to “Enabled”, the analog
output signal will be limited to “Sig From”
to “Sig To”. If the concentration drops
below “CO2 From”, the output signal will
be clipped to “Sig From”. If the
concentration rises above “Sig To” the
signal output will not rise above “Sig To”.
With clipping set to “Disabled”, the signal
output will range from 0.00V to just over
10.00V (or 0.0mA to just over 20.0mA).
The output will therefore have a range
beyond “Sig From” and “Sig To”.
