Programming The Cal Memories - PerkinElmer Photovac 2020 Manual

2020 Software Manual
NOTE: Readings may fluctuate slightly as the gas bag empties. Do not
allow 2020 to evacuate the bag completely.
If 2020 is powered off in the middle of zeroing or spanning, it will
power on displaying a Cal status. This indicates that you need to
calibrate 2020. While the Cal status is active, all alarms are inactive.

Programming the Cal Memories

2020 has 15 Cal Memories and can be calibrated with 15 different
span gases or response factors if desired.
To program the Cal Memories:
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10. Select "Set", "Cal" and "Zero". The 2020 sets its zero
point.
11. Select "Set", "Cal" and "Span". The 2020 asks for the
span gas concentration. Enter the known span gas
concentration, without pressing the ENTER key to
confirm it.
12. Open the bag and then connect the gas bag adapter to
the inlet. Press ENTER. 2020 sets its response factor.
13. When the display reverts to the default display, 2020 is
calibrated and ready for use. Remove the span gas bag
from the inlet.
1. If you will be calibrating directly from the portable
cylinder, connect a flow-match regulator (Part No.
MX350006) to each tank. You must use a separate
regulator for each compound to prevent cross
contamination.
If you are using gas bags, prepare the bags of
calibration gas as outlined in Calibration Using a Gas
Bag on page 73. Use a different gas bag and gas bag
adapter for each concentration and for each type of
calibration gas. You can use the same gas bag to zero