Super Systems PGA3500 - Manual (Page 23)

SSi Manual 4559 Page 23 of 26 3-Gas Analyzer PGA3500
Revision Level - D
changed after determining that additional adjustments are required based on the specific
conditions and equipment at your facility. Please contact Super Systems for help with
adjusting these pre-set values.
Span Calibration – Menu Page 24
This page is used to span calibrate the IR
cells. It is very important to be sure that a
Certified Primary Standard sample gas within
the noted specifications is used. The nominal
composition of this gas should be:
20% CO (Carbon Monoxide)
1% CO2 (Carbon Dioxide)
6% CH4 (Methane or Natural Gas)
40% H2 (Hydrogen)
Balance N2 (Nitrogen)
When viewing this screen, the current measured values are shown at the left under the
heading
Actual , while the desired values will be in the center column, Span Gas . The final
column is Status , and this shows the percentage difference between the actual and desired
values, followed by a comment. This comment can either be OK, ?OK, or BAD, depending
on how far apart the values are. If the difference is between 0 and 10% of the span value,
then it will be OK and the calibration will proceed without interruption. If the difference is
between 10% and 20%, it will be ?OK, and a warning message will be displayed. Pressing
Enter will allow the calibration to continue. If the value is more than 20% out, it will be
BAD and the calibration will not be allowed to proceed. If this occurs, check to make sure
that you are using the correct gas and that there is adequate flow. If it is still not operating
properly contact SSi for additional support.
To proceed with the calibration of one or more sensors, use the up and down arrows and the
numeric keypad to enter the specific values of each gas. These will be listed on the
calibration cylinder. It is possible to calibrate one, two, or all three sensors. The default
setting is to calibrate all three, however if you do not want to calibrate one of the sensors you
can use the up and down arrows to access the sensor that you do not want to calibrate, and
press Enter over the existing Yes. This will change it to No, and that sensor will not be
calibrated.
When this data has been entered, use the arrow key to move to the Start button and press
Enter. Timers will count down approximately two minutes and at the conclusion the sensors
will be calibrated.
WARNING: Do not pressurize PGA3500 with compressed gas. Always start the
flow of Nitrogen and regulate prior to connecting to PGA3500 inlet.
Set Pass Codes - Menu Page 25
This page is used to change the pass code for menu screens 16 and higher. For screens 1
through 15, no pass code is required to access the screen. Menu screens 16 through 21 are
considered Supervisor Level, and they require the Level 1 pass code. Menu screens 22
through 29 are considered Configuration Level, and they require the Level 2 pass code. The