Bacharach Fyrite Classic Manual De Propietario

 

Instruction 0011-9026

Page 10

To make a test with the FYRITE, the metal Sampling Tube at one end of Sampling 

Assembly Hose is inserted into the gas to be analyzed. The rubber Connector Plug at 

the other end of the Rubber Hose is then fi rmly pressed down on the spring-loaded 

Valve of the instrument (See Figure 12). This simultaneously opens a passage into the 

Top Reservoir and seals off the center bore.

Next, a sample of the gas is pumped into the Top Reservoir by squeezing the rub-

ber Aspirator Bulb. At least 18 bulb squeezes are required to assure that the rubber 

Sampling Hose and the Top Reservoir of the FYRITE are thoroughly purged of the 

previously analyzed sample. During the 18th Aspirator Bulb squeeze and immediately 

before releasing Bulb, the fi nger is lifted from the Connector Plug, which automati-

cally returns the Plunger Valve to upper position against its top seat.

Refer to Figure 13. With the Valve in this position, the fi nal 60 cc of the gas sample is 

locked into the FYRITE and the Top Reservoir is opened to the center bore so that the 

gas sample can pass to the absorbing fl uid. The FYRITE is then inverted, forcing the 

gas sample to bubble through the absorbing solution which absorbs either CO

2

 or O

2

 

depending on the type FYRITE in use.

Refer to Figure 14. The instrument is then turned and held upright. Absorption of the 

CO

2

 or O

2

 by the absorbing fl uid creates a suction, which causes the Diaphragm at the 

bottom to fl ex upward permitting the level of the absorbing fl uid to rise in the center 

tube an amount proportional to the gas absorbed. The scale indication correspond-

ing to the top of the fl uid column is then read as a percentage of gas absorbed by the 

FYRITE fl uid.

FYRITE Analyzers are available for either Carbon Dioxide or Oxygen analysis, and 

each of these models is made in the three scale ranges shown in Section 5.3. All six 

instruments are similar in appearance and size, but they differ in important construc-

tion details, as well as in absorbing fl uids.

FYRITE absorbing fl uid is selective in the chemical absorption of carbon dioxide or ox-

ygen respectively.  Therefore, the FYRITE’s accuracy is well within the range required 

for industrial and professional applications, and does not depend upon complicated 

sequential test procedures. Further more, the FYRITE readings are unaffected by the 

presence of most back ground gases in the sample.

The appearance of a dark red fl uid fl oating on top of CO

2

 FYRITE solu tion is entirely 

normal. The darker fl uid consists of a small amount of material added to prevent 

excessive foaming at the meniscus and improves readability.

FYRITE refi ll bottles should be stored at room temperature (70° F [21° C]) in the car-

ton provided, and placed in use within one year.

NOTE: Before opening refi ll bottle, read the label and make