Model 4802A
31
The last
A1
alarm option to appear on the display will be the alarm set point (trip level).
If this level is reached or exceeded the
A1
alarm outputs will activate. The display will
indicate the current
A1
alarm set point (Figure 55). Press the
Mode/Select
switch
repeatedly, until the desired
A1
alarm set point appears on the display (
10
to the
A2
set
point in increments of
5
). The
A1
set point cannot be set higher than the
A2
set point.
30
is the factory default for this selection.
Figure 55 – A1 Set Point Option
5.4.5 Calibration Level Option
After the
A1
alarm options have been selected, the user will choose the calibration level
(Figure 56). The CAL LED will flash and display will indicate current calibration level.
The acceptable range, in % LEL (lower explosive limit), is between
25
and
90
, inclusive.
50%
is the factory default for this selection.
Figure 56 – Calibration Level
