RKI Instruments Beacon 410 User Manual
Page 53
Beacon 410 Gas Monitor Operator’s Manual
Performing a Calibration • 49
4.
Use the UP/YES or DOWN/NO button to scroll through the channel combination
choices and select the channel or channels that you will air adjust.
5.
Press and release the ENTER button to accept the displayed choice and continue
with the air adjustment. The display will alternate between the top two screens shown
below. In the example below, channels 1, 2, 3, and 4 have been selected.for an air
adjust.
If any of the displayed channels is a 4 - 20 mA type detector head, the gas name and
concentration will alternate with CAL at AMP. In the example above, channel 2 is a
4 - 20 mA type channel.
6.
Verify that the detector heads are in a fresh air environment. If you cannot confirm a
fresh air environment, use a zero air cylinder to introduce fresh-air to each detector
when adjusting the fresh air reading below. If you are air adjusting both 4 - 20 mA and
direct connect types of detector heads, air adjust the 4 - 20 mA type detector heads at
the detector heads first, then apply zero air to and air adjust the direct connect type
detector heads to avoid exiting the air adjustment screens prematurely before you
have adjusted the 4 - 20 mA type detector heads.
7.
For a 4 - 20 mA type detector head, adjust the detector head’s fresh air reading
(sometimes referred to as the zero reading for non-oxygen detector heads) at the
detector head. See the detector head operator’s manual for instructions on how to
adjust the fresh air reading.
8.
If you are only air adjusting 4 - 20 mA type detector heads, press the ENTER button
when you are done to return to the Select Operation Screen. Proceed to step 10.
If you are air adjusting both 4 - 20 mA type detector heads and direct connect detector
heads, proceed to step 9.
9.
For direct connect type detector heads, if the detector heads are in a fresh air
environment, press and release the ENTER button. The Beacon 410 will perform a
fresh air adjustment and the display will indicate AIR ADJUST PASSED for each
direct connect type detector head if the air adjust is successful. If the air adjust was
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