Setup and Calibration 4-23
January 2008
Performing a Span
Calibration
Stop the flow of the zero calibration gas, and begin the flow of the
span gas to the inlet port of the transmitter, at about 250 cc/min
(0.5 SCFH) and atmospheric pressure.
At the following prompt, enter the percentage of target gas (H2 in this
example) in the span gas mixture (usually 100.00%).
A
[YES] response at the next prompt sends the last live value to the
analog output, while a
[NO] response sends the calibration gas value to
the analog output.
Note: The value (x.x) shown at the above prompt is the current
measured value for the active gas curve.
The meter now recalibrates its span point.
Gas-Curve: Manual.. Use the [
S] and [T] keys to
select
[Span] and press the
[ENTER] key.
Zero
Span
Gas-Curve: Ma..Span Use [W] and [X] to position the
cursor under the desired char-
acter. Then, use [
S] and [T] to
increment the value. Press
[ENTER] when done.
Enter Span Gas Pcnt
xxx.xx
s
Gas-Curve: Man..Cal Use [W] and [X] highlight the
desired answer (YES or NO)
to the question shown. Then,
press the
[ENTER] key.
Hold 4-20 mA Output
During Calibration?
YES
NO
Gas-Curve: Man..Cal Make sure the span gas is
flowing, and use [
W] and [X]
to highlight
[Next]. Then, press
the
[ENTER] key.
Introduce Cal Gas
x.x H2/CO2
<Back
Next>
Cancel
Gas-Curve: Man..Cal When the displayed reading
has stabilized, use [
W] and [X]
to highlight
[Next]. Then, press
the
[ENTER] key.
Hit Next When Stable
x.x H2/CO2
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Next>
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