LumaSense Technologies INNOVA 1412i - Manual (Page 78)

Chapter 7
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BE6025-15 1412i Photoacoustic Gas Monitor LumaSense Technologies A/S
Page 78 of 202
Table 7.3 The range of acceptable values and the default value for the
Fixed interval sampling
Acceptable Values
hours:minutes
Interval
hours:minutes
Defalut Value
hours:minutes
00:01 to 01:00 00:01 00:02
Flushing: the length of time the monitor flushes the measurement
chamber and the sample tubing between measurements. There are
two options here:
Auto: the monitoring system controls the flushing by
selecting the optimum flushing time. This time can
vary as this option takes into account the
cleanliness of the external air-filters and the
length of the sampling tube.
Therefore, the sample tube length must be defined.
Table 7.4 The acceptable values and the default values of the length of the
sampling tube
Monitor Display Text Acceptable Values Default
Value
LENGTH OF SAMPLING
TUBE
0 – 99 metres 0.00
LENGTH OF SAMPLING
TUBE
0 – 324.90 feet 0.00
Fixed Time: there are two selections here: Chamber, which is
always selected with this option and Tube. See
Table 7.5 for the acceptable values.
Table 7.5 The range of acceptable values and the default values for the
chamber and sample tube flushing times
Acceptable Values Interval Default
Value
Chamber: 2 to 60 s
Tube: 0 (=off), 3 to 120 s
1 s
1 s
8 s
3 s
Water Interference: the Monitor is capable of measuring water’s
contribution to the signal measured in its analysis cell. The user can
decide whether or not the signal should be compensated for water’s
contribution. It is suggested that water should be compensated for in
all measuring situations except where extremely dry gases are being
measure.