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Chapter 4
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BE6030-13 1314i Photoacoustic Gas Monitor LumaSense Technologies A/S
Page 47 of 199
The displays which follow indicate the type of text which appears
each time q is pressed:
GAS A: MAX 84.5E+00 µ 8.03+00
ALARM 1_____ MIN 7.42E+00
s
2.36E+00
While a monitoring task is being performed a running statistical
analysis of the monitored gases/vapours is made and the results are
displayed as shown above, where:
MAX = maximum concentration of gas A measured during the
period of time the monitoring task has been performed.
MIN = minimum concentration of gas A measured during the
period of time the monitoring task has been performed.
ALARM 1= the user-defined concentration of gas A which, if
measured by the Monitor, will trigger a switch in the
Monitor and activate an external alarm relay connected to
it.
= linear average, or mean value, of all the gas A
concentrations measured during the period of time the
monitoring task has been performed
= standard deviation of gas A’s concentrations from the
mean value (m) described above (see section 8.1 for
further details).
All numbers are written in the exponential form, for example:
84.5E+00 = 84.5 x 10
+0
= 84.5
The concentration unit in this case is mg/m3 as this was chosen in
the active set-up (see section 4.3.2).
3. Press q.
A:
(the name of the gas being measure by Filter A will appear here) 972.06 mBar
2014-01-16 09:50:32 ___________ 7.42 mg/m3
A:
(the name of the gas being measure by Filter A will appear here) 972.06 mBar
2014-01-16 09:51:33 ___________ 7.42 mg/m3
As you can see, the display provides the date and time at which the
measurement was made, and the concentration of gas A is given in
the units mg/m
3
because this was the unit chosen for gas
concentration in the active set-up. The dashed lines, which appear
after the time will be replaced by a number as soon as the
monitoring task has been stopped (see section 4.3.8).