LumaSense Technologies INNOVA 1412i User Manual
Page 40
Chapter 4
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BE6025-15
1412i Photoacoustic Gas Monitor
LumaSense Technologies A/S
Page 40 of 202
The Auto option regulates the flushing time depending on the
sampling tube length and the cleanliness of the air-filter (as the filter
become dirtier, the flushing time will increase). The Fixed Time
option is divided in to two parts; chamber flushing time and sample
tube flushing time. Once defined, these times are constant regardless
of the sampling tube length and cleanliness of the filters.
Auto Option
a. Press S1, and the following display appears.
b. Press
¿
.
c. Use the direction keys to define the tube length: ▲ and ▼ to
increase and decrease the numbers respectively; t and u to
move the cursor across the fields.
Change the length of the sampling tube shown on the screen to
the length of the tube you attached to the Monitor in
Note: the range of acceptable values for the sampling tube
ranges from 00.00m to 99.00m.
d. Press
¿
to select displayed length.
The following display appears:
The Monitor measures gas concentrations in the absolute unit of
mg/m
3
– a unit which is dependent on temperature. Alternatively,
the Monitor can calculate gas concentrations in parts per million
(ppm) by volume – this unit is independent of the temperature of
the gas. If mg/m
3
is chosen as the gas concentration unit it is
therefore necessary to define the temperature at which you wish the
Monitor to calculate gas concentrations. This pre-defined
temperature is termed the NORMALIZATION TEMPERATURE.
e. Press
¿
to change value.
LENGTH OF SAMPLING TUBE 0.00 m
PRESS ENTER TO CHANGE VALUE
NORMALIZATION TEMPERATURE 20.0 º C
PRESS ENTER TO CHANGE VALUE