RKI Instruments Beacon 410 User Manual
Page 55
Beacon 410 Gas Monitor Operator’s Manual
Performing a Calibration • 51
6.
Use the UP/YES and DOWN;/NO buttons to make the displayed concentration match
the calibration gas concentration, then press and release the ENTER button to accept
it. The display will show the expected calibration gas concentration for the next
selected direct connect type channel.
7.
Repeat step 6 for each selected direct connect channel. When the last selected direct
connect channel’s calibration gas concentration has been accepted, the top two
screens shown below will alternate.
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
8.
For a 4 - 20 mA type detector head, adjust the detector head’s gas response at the
detector head. See the detector head operator’s manual for instructions on how to
adjust the gas response reading. This is sometimes referred to as adjusting the span
(or zero for an oxygen channel).
9.
If you are only gas 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 12.
If you are air adjusting both 4 - 20 mA type detector heads and direct connect detector
heads, proceed to step 10.
10. For direct connect type detector heads, apply calibration gas to each selected
detector. See each detector head’s operator’s manual for instructions on how to apply
gas to each detector.
When calibration gas is applied to a detector, the Beacon 410 will freeze the display
gas reading at the highest level reached while the gas was applied (lowest for an
oxygen detector head). After applying calibration gas for the required amount of time,
usually two minutes, remove the gas from the detector. The Beacon 410 will continue
to display the maximum gas response (lowest for an oxygen detector head) on the
display and retain the response level in its memory.
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