LumaSense Technologies 3434i SF6 Leak Detector - Manual (Page 47)

Chapter 4
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BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S
Page 47 of 191
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.
m = linear average, or mean value, of all the gas A
concentrations measured during the period of time the
monitoring task has been performed
s = 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:
14.5E+00 = 14.5 x 10 +0 = 14.5
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
: Sulphur Hexafluoride
972.06 mBar
2014-01-16 09:50:32 ___________ 7.42 mg/m3
A
: Sulphur Hexafluoride
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 ).
After scrolling through the list of individual measurement results for
gas A, the following text is displayed:
SAMPLING IS CONTINUOUS
MONITORING PERIOD IS NOT PRE-SET