GE XDP-H2, User Manual

Page: 52 / 96

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
<Back Next> Cancel