Instruction 0011-9026
Page 8
3.2.1 Draining Fluid Droplets
For maximum accuracy, it is important to form the habit of follow ing a standard
procedure in this operation and to use the same procedure both before adjusting scale
zero and before reading percent CO
2
or O
2
.
3.3 FYRITE Temperature
The FYRITE temperature should be at or close to the temperature of the working
environment where the analysis is being made and should not be subject to sudden
temperature changes. If FYRITE is carried from cooler to warmer location or vice
versa, expose FYRITE to new temperature condition to permit uniform temperature
stabilization. Usually 15 or 20 minutes will suf
fi
ce, except when extreme temperature
variations are involved. Temperature stabilization can also be accelerated by invert-
ing FYRITE frequently.
3.3.1 Temperature of Gas Sample
The gas sample as it enters FYRITE should be cooled (or warmed if sampling cool
gases) to same (ambient) temperature as the FYRITE.
Capacity of Standard Aspirator Bulb and Sampling Assembly (Part # 11-7029) to cool
the gas sample is suf
fi
cient if the temperature of gas being sampled does not exceed
850°F (454°C), even where a large number of consecutive samples are required if there
is an interval of not less than 5 minutes between samples.
FYRITE indicators operate over a wide temperature range. They may be exposed to
ambient temperatures from –30° to 150°F (–34° to 66° C). Gases up to 850° F (454° C)
may be tested with Standard Aspirator Sampling Assembly (11-7029).
®
20
16
12
8
4
%CO2
0
Top of
Fluid
Column
Figure 11. Locating Top of Fluid Column.
