Specifications
Instruction 0011-9026 Page 11
FYRITE CO
2
refi ll fl uid may develop a white insoluble precipitate upon aging. The
precipitate does not affect fl uid performance in any way, but if present, should be
fi ltered out to prevent adherence to internal surfaces of the FYRITE.
To fi lter, place a clean piece of thin cloth or netting loosely over the open CO
2
FYRITE
and slowly pour refi ll contents into top reservoir. Before disposing of cloth, rinse thor-
oughly with water. FYRITE fl uid is corrosive!
FYRITE O
2
refi ll fl uid reacts very rapidly with oxygen in air. Oxidation of absorbent
can be prevented by purging the FYRITE body with Nitrogen, natural gas or other
oxygen-free gas, just before fi lling, and by maintaining a stream of this gas around
mouth of the bottle (see Figure 21) while its contents are emptied into the FYRITE.
Another method for refi lling the O
2
FYRITE (and still limiting the oxidation of the
absorbent) is to invert the unit and place it over the 60 cc bottle of fl uid. Then invert
both so that the FYRITE is now upright and the O
2
fl uid is fi lling the instrument (see
Figure 21a). Immediately install plastic Top Cap Ring without delay. This method
helps to minimize oxidation and improve the life of the fl uid.
5.2 FYRITE Operating Temperature Range
The FYRITE indicators operate over a wide temperature range, and 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 equipment (11-7029).
NOTE: Remember, for most accurate results, the FYRITE must
be at temperature equilibrium with its sur roundings (ambient
temperature) and the incoming gas sample at the same tem-
perature as the FYRITE.
5.3 Typical FYRITE Applications
Listed below are six models of FYRITE Indicators and two Aspirator Sampling Assem-
blies with part numbers identifying their application.
Bacharach Part Numbers
For Test-
ing
Scale
Range
FY-
RITE
Aspirator Sam-
pling Assy.
Fluid Complete Kit
with Case
Carbon
Dioxide
0 - 7.6% 11-7042 11-7029 10-5100 10-5053
0 - 20% 11-7032 11-7029 10-5057 10-5000
0 - 60% 11-7034 11-7029 10-5057 10-5032
Oxygen
0 - 21% 11-7036 11-7029 10-5060 10-5011
0 - 60% 11-7038 11-7029 10-5060 10-5046
TYPICAL APPLICATIONS WITH FULL SIZE
SECTIONS OF FYRITE SCALES