Bacharach FYRITE Gas Analyzer CO2 and O2 Indicators - 2.2 FYRITE FLUID HANDLING PRECAUTIONS

Instruction 0011-9026Page 2
(b) FYRITE Fluid Strength
To check fl uid strength.
NOTE: When repeating procedures as outlined in Section 3.0
Steps 7 through 9 (absorbing and reading percent O
2
and ab-
sorbing and reading percent CO
2
) and before venting FYRITE
to atmosphere for next sample, if the reading increases by more
than 1/2 percent for either CO
2
or O
2
, replace the fl uid.
It is often desirable to check fl uid strength before taking the FYRITE to a location
where it will be used. It can be tested on sample atmospheric air (which contains
20.9% O
2
). Be certain to wet Filter Saturator when checking atmospheric air for maxi-
mum accuracy. (See Section 6.9)
O
2
(Oxygen) Fluid - Fresh FYRITE fl uid will absorb all O
2
from approxi mately 100
samples containing 10% O
2
.
CO
2
(Carbon Dioxide) Fluid - Fresh FYRITE Fluid will absorb all CO
2
from ap-
proximately 350 samples containing 10% CO
2
.
(c) FYRITE Sampling Assembly - Always check sampling assembly for proper (leak-
free) operation as outlined in Section 6.7 before pro ceeding with test.
(d) Make certain wool in Filter Saturator Tube is moistened with water if using
either O
2
or CO
2
FYRITE in a noncombustible application where the gas sample
is not fully saturated with water vapor. Examples where fi lter-saturator must
be wetted include measuring CO
2
or O
2
in ambient air or from compressed gas
samples. Refer to Section 6.9 when replacing or moistening saturator (wool) fi lter
is required.
FYRITE OPERATION PRECAUTION: To prevent fl uid
spill, never depress Plunger Valve to vent FYRITE when unit
is in the inverted or any other non-upright position. When de-
pressing Plunger Valve in the upright position to vent FYRITE,
hold at a slight angle away from the operator’s face.
2.2 FYRITE FLUID HANDLING PRECAUTIONS
CAUTION
FYRITE fl uids used in the CO
2
and O
2
analyzers are corrosive
and contain poisonous elements which must not be taken in-
ternally. In the event of a spill or accidental body contact with
FYRITE fl uid, read the following carefully.