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This menu entry performs a dual-function:
CHANNEL OFF - A number may be entered which represents a
gas concentration value in ppm. Once the number
is entered, the analog output current will be forced
to the output current representing the entered ppm
value.
Sensor Type - off position
Output function check
Select - 100% = 20 mA
Select - 50% = 12 mA
Select - 0% = 4 mA
This feature may be used to perform some basic
system troubleshooting (refer to section 7.0).
CHANNEL ON- Pressing the enter button during the output menu
selection takes an instantaneous “snapshot” of the
gas concentration value on the display and displays
it in the output display as a concentration value in
ppm. For example, if the unit is presently reading
a concentration of 25 ppm, when the enter key is
pressed, this value would be read and displayed in
the output parameter.
4.4.2.2.4.2 Span
Allows numerical entry of the desired gas
concentration value that causes the analog output
current to go to its maximum value (20 mA). It is
recommended that the span be set to the maximum
sensor range selected in the sensor type menu
(section 4.4.2.2.2).
CH1.ANAOUT.SPAN
SSS
Where “SSS” is a gas concentration value entered in
units of ppm.
CAUTION
The value of the gas concentration entered must be
within the range selected from the SENSOR TYPE menu (refer
to section 4.4.2.2.2), otherwise erroneous operation will result.
4.4.2.2.4.3 Zero
Allows numerical entry of the desired gas
concentration value that causes the ANALOG
OUTPUT current to go to its minimum value (0 or 4
mA, depending on the MODE selection in section
4.4.2.2.4.4).
CH1.ANAOUT.ZERO
ZZZ
Where “ZZZ” is a gas concentration value entered in
units of PPM.
CAUTION
The value of the gas concentration entered must be
within the range selected from the SENSOR TYPE menu (refer
to section 4.4.2.2.2), otherwise erroneous operation will result.
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