Bacharach Fyrite Classic Operating Manual

Page 1
INSTRUCTION 11-9026
FYRITE® Gas Analyzer
CO2 and O2 Indicators
Operation/Maintenance
Rev. 8 – September 2005
20
16
%CO
2
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8
4
0
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Bacharach, Inc.
621 Hunt Valley Circle, New Kensington, PA 15068
Phone: 724-334-5000 • Fax: 724-334-5001
Web: www.bacharach-inc.com
Printed in U.S.A. ® Registered Trademarks
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WARRANTY
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications. Bacharach’s liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at Bacharach’s option, of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.’s reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given by Buyer to Bacharach Inc. within one (1) year after the date of delivery of this Product by Bacharach, Inc.
Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach’s liability and Buyer’s remedy under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach, to the replacement of this Product or parts thereof that are defective in title.
The warranty set forth in paragraph 1 does not apply to parts the Operating Instructions designate as having a limited shelf-life or as being expended in normal use.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTACT OR TORT, WHETHER OR NOT ARISING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be limited to those provided herein to the exclusion of any and all other remedies including, without limitation incidental or consequential dam­ages. No agreement varying or extending the foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in writing, signed by a duly authorized officer of Bacharach.
NOTE: Gaskets are considered consumable items and are excluded from the terms of this warranty.
Register Your W arranty by Visiting
www.bacharach-inc.com
CAUTION
Corrosive fluid is contained inside this unit. These instructions should be thoroughly read before operation is attempted.
Copyright © 1998-2005 Bacharach, Inc., all rights reserved.
A
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FYRITE SAFETY PRECAUTIONS
The operator (s) of this instrument should thoroughly familiarize themselves with the applicable safety precautions before handling or using the FYRITE for gas analysis.
Review Figures 1a,1b, 1c and 1d on this page. Make certain to follow the steps outlined below and read the fluid handling precautions for your personal safety.
1) Always use protective equipment such as safety goggles, gloves, and protective clothing as illustrated in Figure 1a.
2) Read the instruction manual thoroughly. When filling the FYRITE with the applicable fluid charge, use safety equipment and perform the operation in the vicinity of running tap water (Figure 1b).
3) The FYRITE fluid should always be in the bottom reservoir before and during sample introduction to the FYRITE. When venting the FYRITE to atmosphere, hold the instrument in the vertical position and at a location away from your face (Figure 1c).
4) NEVER vent FYRITE in the inverted position (with the plunger facing down­ward). This will cause fluid to spill, which is corrosive and contains harmful elements (Figure 1d).
NOTE: In the event of fluid spill - refer to Section 2.2 (FYRITE Handling Precautions). For Maintenance - refer to Section 6.0.
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Figure 1a. Protective equipment required before attempting gas analysis.
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Figure 1c. Venting FYRITE to atomsphere at 45° angle.
Figure 1b. Preparing to fill FYRITE using recommended protective safety equipment.
®
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%CO
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Figure 1d. NEVER vent FYRITE in the inverted position, which will cause fluid to spill.
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TABLE OF CONTENTS
1.0 DESCRIPTION ............................................................................................................................................. 1
2.0 FYRITE INSPECTION BEFORE AND DURING TEST............................................................................ 1
2.1 Pre-Operational Check .................................................................................................................... 1
2.2 FYRITE FLUID HANDLING PRECAUTIONS ............................................................................ 2
3.0 BASIC FYRITE OPERATION PERCENT CO2 AND 02............................................................................ 3
3.1 Determining CO2 and O2 FYRITE Fluid Strength ......................................................................... 7
3.2 Operating Precautions to Ensure Maximum Accuracy..................................................................7
3.2.1 Draining Fluid Droplets .................................................................................................. 8
3.3 FYRITE Temperature ...................................................................................................................... 8
3.3.1 Temperature of Gas Sample............................................................................................ 8
4.0 PRINCIPLE OF OPERATION ...................................................................................................................... 9
5.0 APPLICATION INFORMATION ............................................................................................................... 10
5.1 FYRITE Absorbing Fluid .............................................................................................................. 10
5.1.1 FYRITE Refill Fluid (Storage Life, etc.) ..................................................................... 10
5.2 FYRITE Operating Temperature Range ....................................................................................... 11
5.3 Typical FYRITE Applications....................................................................................................... 11
5.4 CO2 FYRITE Only Combustion Testing....................................................................................... 12
5.4.1 Percent CO2 Shows Volume of Excess Air................................................................... 12
5.4.2 Too Much Excess Air Means Inefficient Combustion .................................................13
5.4.3 What is Proper CO2 Value? ........................................................................................... 13
5.4.4 How To Calculate Combustion Efficiency .................................................................. 13
5.5 O2 FYRITE Only Combustion Testing ......................................................................................... 13
5.5.1 Percent O2 Shows Volume of Excess Combustion Air ................................................ 13
5.5.2 Too Much Excess Air Means Inefficient Combustion .................................................13
5.5.3 What is Proper O2 Value? .............................................................................................. 14
5.5.4 Measuring O2 in Addition to CO2................................................................................ 14
5.5.5 Where is Percent CO2 or O2 Measured? ....................................................................... 14
5.6 Background Gases Affecting FYRITE Readings ......................................................................... 16
5.7 General FYRITE Applications ...................................................................................................... 17
5.8 Altitude Correction Table .............................................................................................................. 18
6.0 FYRITE MAINTENANCE ........................................................................................................................ 18
6.1 Increasing FYRITE Fluid To Proper Level ...................................................................................18
6.1.1 Decreasing FYRITE Fluid to Proper Level ..................................................................19
6.2 Checking FYRITE Fluid Strength ................................................................................................ 19
6.2.1 CO2 FYRITE Fluid Only............................................................................................... 19
6.2.2 O2 FYRITE Fluid Only ................................................................................................. 21
6.3 Replacing FYRITE Fluid............................................................................................................... 21
6.4 Inspection of FYRITE for Fluid Leakage ..................................................................................... 22
6.5 Cleaning FYRITE .......................................................................................................................... 24
6.6 Replacing FYRITE Plastic and Rubber Parts............................................................................... 24
6.7 Aspirator Bulb - Sampling Assembly ........................................................................................... 26
6.8 Storing FYRITE and Refill Fluid.................................................................................................. 26
6.9 Replacing Saturator Filter Packing Part #11-0121 ...................................................................... 26
7.0 ILLUSTRATED PARTS LIST FYRITE CO2/O2........................................................................................ 29
7.1 FYRITE Illustrated Parts ............................................................................................................... 30
7.2 FYRITE Sampling Assemblies...................................................................................................... 31
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INSTRUCTIONS 11-9026
OPERATION/MAINTENANCE
BACHARACH FYRITE MODELS
CO2 and O2 INDICATORS
1.0 DESCRIPTION (Refer to Figure 1)
The FYRITE employs the well-known “Orsat” method of volumetric analysis involv­ing chemical absorption of a sample gas, such as carbon dioxide or oxygen. The reagent used to absorb carbon dioxide (CO2) is potassium hydroxide (dyed red), and chromous chloride (blue) is the absorbent for oxygen (O2). The unique feature of the FYRITE is that the absorbing fluid is also used as the indicating fluid so that one vessel takes the place of both measuring burette and absorption pipette.
The body of the FYRITE is molded of clear high-strength plastic, comprises top and bottom reservoirs and a center tube connecting the two reservoirs. The bottom of the lower reservoir is sealed off by a synthetic rubber diaphragm that rests on a perfo­rated metal plate. The upper reservoir is covered by a molded plastic cap that contains a double-seated plunger valve. A spring holds this valve against a carefully finished seat in the top cap providing a perfect seal which makes the instrument spill-proof in any position. When the valve is partially depressed, the entire instru­ment is open to the atmosphere and the instrument is, of course, is no longer spill­proof.
The bottom reservoir is filled with the absorbing fluid, which extends about 1/4 inch into the bore of the center tube when the instrument is held upright. The scale position, mounted to one side of the center tube, is adjustable.
2.0 FYRITE INSPECTION BEFORE AND DURING TEST
CAUTION
Corrosive fluid is contained inside unit, instructions should be thoroughly read before operation is attempted.
2.1 Pre-Operational Check
To ensure proper FYRITE operation and reliable results, check the following:
(a) With FYRITE vented and in a vertical position, it should be possible to adjust
scale zero to the top of the fluid column. Refer to FYRITE Operation for proper setup (Section 3.0 Steps 1 through 5). If this is not possible, add or remove a small amount of fluid per Section 6.1.
Instruction 11-9026 Page 1
Page 6
(b) FYRITE Fluid Strength
To check fluid strength.
NOTE: When repeating procedures as outlined in Section 3.0 Steps 7 through 9 (absorbing and reading percent O absorbing and reading percent CO2) and before venting
and
2
FYRITE to atmosphere for next sample, if the reading in­creases by more than 1/2 percent for either CO2 or O2, replace the fluid.
It is often desirable to check fluid 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
maximum accuracy. (See Section 6.9)
O
2
samples containing 10% O2.
CO
approximately 350 samples containing 10% CO
). Be certain to wet Filter Saturator when checking atmospheric air for
2
(Oxygen) Fluid - Fresh FYRITE fluid will absorb all O2 from approximately 100
(Carbon Dioxide) Fluid - Fresh FYRITE Fluid will absorb all CO2 from
2
.
2
(c) FYRITE Sampling Assembly - Always check sampling assembly for proper
(leak-free) operation as outlined in Section 6.7 before proceeding with test.
(d) Make certain wool in Filter Saturator Tube is moistened with water if using
either O2 or CO2 FYRITE in a noncombustible application where the gas sample is not fully saturated with water vapor. Examples where filter-saturator must be wetted include measuring CO samples. Refer to Section 6.9 when replacing or moistening saturator (wool)
or O2 in ambient air or from compressed gas
2
filter is required.
FYRITE OPERATION PRECAUTION: To prevent fluid spill, never depress Plunger Valve to vent FYRITE when unit is in the inverted or any other non-upright position. When depressing 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 fluids used in the CO and contain poisonous elements which must not be taken internally. In the event of a spill or accidental body contact with FYRITE fluid, read the following carefully.
Page 2 Instruction 11-9026
and O2 analyzers are corrosive
2
Page 7
HAZARDS
Corrosive liquid causes burns. May cause blindness if splashed in eyes. Vapors are irritating and may be harmful.
PRECAUTIONS
Prevent contact with eyes, skin and clothing. Wear eye protection and gloves. Do not vent instrument until fluid has drained from top well. Do not vent instrument (FYRITE) in inverted position.
FIRST AID
For contact with eyes: Immediately flush eyes with water 20 minutes. Get immedi­ate medical attention.
For contact with skin: Immediately flush skin with water 20 minutes. Get immedi­ate medical attention.
For inhalation overexposure: If irritation develops, move victim to fresh air.
For swallowing: Do not induce vomiting. Give two glasses of water or milk if con­scious and not convulsing. Get immediate medical attention.
Refer to the material safety data sheet for further information.
3.0 BASIC FYRITE OPERATION PERCENT CO2 AND 0
2
Four basic steps are required when making an analysis, many being common to both the CO2 and O2 FYRITE.
FYRITE MODEL CO (Red Fluid) (Blue Fluid)
2
FYRITE MODEL O
2
(a) Vent and adjust scale zero. (a) Vent and adjust scale zero.
(b) Pump sample into FYRITE. (b) Pump sample into FYRITE.
(c) Absorb CO2 from sample. (c) Absorb O2 from sample.
(d) Read % CO2 on scale. (d) Read % O2 on scale.
NOTE: To prevent warming of FYRITE fluid during analysis, hold FYRITE by the fins only.
Instruction 11-9026 Page 3
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CO2 FYRITE OPERATION O2 FYRITE OPERATION
(RED FLUID) (BLUE FLUID)
1. Hold upright (Fig. 1) and
away from face. Depress Plunger Valve (momen­tarily) to vent FYRITE, and release.
2. Invert FYRITE (Fig. 2).
Hold at slight angle to drain fluid into top reservoir.
3. Turn upright. Hold
FYRITE at 45° angle (Fig. 3) momentarily to allow fluid droplet drainage into bottom reservoir.
Figure 1
Figure 2
Figure 3
1. Hold upright (Fig. 1) and away from face. Depress Plunger Valve (momen­tarily) to vent FYRITE, and release.
2. Invert FYRITE (Fig. 2) to absorb O2 drawn into FYRITE whenever Plunger Valve is de­pressed). Hold at slight angle to drain fluid into top reservoir.
3. Turn upright. Hold FYRITE at 45° angle to drain fluid into bottom reservoir. Turn upright. Repeat sequence of Steps 1, 2, and 3 twice until fluid level does not drop more that 1/2% when Plunger Valve is de­pressed. Turn upright. Hold FYRITE at 45° angle (Fig. 3) momen­tarily until excess fluid droplets have been drained from inside surfaces.
4. Hold FYRITE in upright (Fig. 4) position and away from face. Depress Plunger Valve (momen­tarily) and release.
4. Hold FYRITE in upright (Fig. 4) position and away from face. Note fluid level in column. Depress Plunger Valve (momen­tarily), and release.
Figure 4
Page 4 Instruction 11-9026
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CO2 FYRITE OPERATION O2 FYRITE OPERATION
(RED FLUID) (BLUE FLUID)
5. Holding FYRITE upright (Fig. 5), loosen locknut at rear of scale. Slide scale (Fig. 5a) until top of fluid column lines up with zero line on scale (Fig. 5b). Tighten scale locknut.
NOTE: When setting scale zero, hold FYRITE vertically as shown and level with eyes while sighting across scale to top of fluid column.
6. To pump gas sample into FYRITE (Fig. 6), insert open end of metal sampling tube into area bearing gas for analysis. Hold FYRITE in upright position and place sampling assembly rubber connector tip over the Plunger Valve.
Depress Plunger Valve firmly with connector tip.
Figure 5
Figure 5a
Figure 5b
5. Holding FYRITE upright (Fig. 5), loosen locknut at rear of scale. Slide scale (Fig. 5a) until top of fluid column lines up with zero line on scale (Fig. 5b). Tighten scale locknut.
NOTE: When setting scale zero, hold FYRITE vertically as shown and level with eyes while sighting across scale to top of fluid column.
6. To pump gas sample into FYRITE (Fig. 6), insert open end of metal sampling tube into area bearing gas for analysis. Hold FYRITE in upright position and place sampling assembly rubber connector tip over the Plunger Valve.
Depress Plunger Valve firmly with connector tip.
Pump sample by squeez­ing and releasing aspirator bulb 18 times. During 18th bulb squeeze (with bulb held deflated) release connector tip and Plunger Valve.
Pump sample by squeez­ing and releasing aspirator bulb 18 times. During 18th bulb squeeze (with bulb held deflated) release connector tip and Plunger Valve.
Figure 6
Instruction 11-9026 Page 5
Page 10
CO
FYRITE OPERATION O2 FYRITE OPERATION
2
(RED FLUID) (BLUE FLUID)
7. Absorb sample gas into FYRITE by inverting until fluid drains into top reservoir (Fig. 7). Then turn upright (Fig. 8) to drain fluid into bottom reservoir. Repeat this step once.
8. Hold FYRITE at 45° angle (Fig. 9) momen­tarily to allow fluid droplets to drain into the bottom reservoir.
9. With FYRITE held upright (Fig. 10), permit fluid in column to stabilize a few seconds, then immediately read % carbon dioxide on scale at the point corresponding to top of the fluid column.
7. Absorb sample gas into FYRITE by inverting until fluid drains into top reservoir (Fig. 7). Then turn upright (Fig. 8) to drain fluid into bottom reservoir. Repeat this step three (3) more times (four complete inversions total).
Figure 7
8. Hold FYRITE at 45° angle (Fig. 9) momen­tarily to allow fluid droplets to drain into the bottom reservoir.
Figure 8
9. With FYRITE held upright (Fig. 10), permit fluid in column to stabilize a few seconds, then immediately read % oxygen on scale at the point corresponding to top of the fluid column.
Figure 9
Page 6 Instruction 11-9026
Figure 10
Page 11
10. This step completes CO2 or O2 FYRITE gas sample analysis. A few points to remember when reading the FYRITE:
(a) FYRITE accuracy is within ±1/2% CO
or O2 compared to actual value.
2
(b) Always handle FYRITE by fins to ensure body heat is not absorbed by fluid.
(c) A delay in reading of 5 or 10 seconds may decrease accuracy of reading
slightly but longer delays may cause substantial error.
(d) The FYRITE is calibrated to indicate on a “dry” basis for flue gas samples,
which are normally fully saturated with moisture. Failure to artificially moisten wool packing in Filter Saturator Tube when actual sample is not fully saturated will cause FYRITE to read slightly low.
Therefore, make certain wool packing in Filter Saturator Tube is suffi­ciently moistened with water for accurate results on non-flue gases. Avoid excessive moisture which can be drawn into the Aspirator Bulb and forced into the FYRITE during sampling.
CAUTION
Never depress plunger valve to vent FYRITE in the inverted position. This will cause fluid to spill, which is corrosive and contains poisonous elements. In the event of a spill, read Instruc­tions in Section 2.2 FYRITE fluid handling precautions.
3.1 Determining CO2 and O2 FYRITE Fluid Strength
FYRITE Fluid strength can be conveniently checked immediately after the first sample reading. Without venting, repeat the absorbing operations (Steps 7 through
9) by inverting FYRITE again and positioning upright until all fluid drains to the
bottom reservoir. Observe scale reading. An increase of more than 1/2% CO the second reading as compared to the first indicates a need for fluid replacement.
or O2 in
2
3.2 Operating Precautions to Ensure Maximum Accuracy
Locate top of fluid column (refer to Fig. 11). The surface at the top of the fluid column (meniscus) in the small, center bore will be dish-shaped as shown in Fig­ure 11. Either the high or low point of this dish-shaped surface may be used to locate top of fluid column providing the same point is always used both for setting scale zero and reading percent CO operation and low point for the other will cause an error.
Best practice is to use high point of this fluid surface just at the small center bore wall. In setting scale zero or reading percent CO level with eyes and sight across scale to top of fluid column.
Instruction 11-9026 Page 7
or O2. Obviously, using high point for one
2
or 02, hold FYRITE vertically and
2
Page 12
3.2.1 Draining Fluid Droplets
For maximum accuracy, it is important to form the habit of following a standard procedure in this operation and to use the same procedure both before adjusting scale zero and before reading percent CO2 or O2 .
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 suffice, except when extreme tempera­ture variations are involved. Temperature stabilization can also be accelerated by inverting 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 sufficient 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). Special sampling equipment for high temperatures and unsaturated gas samples are listed in Section 7.2. FYRITE Sampling Assemblies.
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Top of Fluid Column
Figure 11. Locating Top of Fluid Column.
Page 8 Instruction 11-9026
Page 13
4.0 PRINCIPLE OF OPERATION
(Refer to Figures 12, 13, and 14)
Figure 12. When plunger valve is depressed, a gas sample is pumped through top reservoir with center bore is sealed off.
Figure 14. Absorption of gas sample by fluid creates suction, which causes diaphragm to flex up and fluid to rise in center bore to replace gas absorbed.
Figure 13. When plunger valve is released, the gas sample is locked into FYRITE and the top reservoir is opened to center bore so that gas sample can pass through absorbing fluid.
Instruction 11-9026 Page 9
Page 14
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 firmly 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 rubber 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 finger is lifted from the Connector Plug, which automatically returns the Plunger Valve to upper position against its top seat.
Refer to Figure 13. With the Valve in this position, the final 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 fluid. The FYRITE is then inverted, forcing the gas sample to bubble through the absorbing solution which absorbs either CO or O2 depending on the type FYRITE in use.
2
Refer to Figure 14. The instrument is then turned and held upright. Absorption of the CO at the bottom to flex upward permitting the level of the absorbing fluid to rise in the
or O2 by the absorbing fluid creates a suction, which causes the Diaphragm
2
center tube an amount proportional to the gas absorbed. The scale indication corresponding to the top of the fluid column is then read as a percentage of gas absorbed by the FYRITE fluid.
5.0 APPLICATION INFORMATION
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 con­struction details, as well as in absorbing fluids.
5.1 FYRITE Absorbing Fluid
FYRITE absorbing fluid is selective in the chemical absorption of carbon dioxide or oxygen 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. Furthermore, the FYRITE readings are unaffected by the presence of most background gases in the sample.
The appearance of a dark red fluid floating on top of CO entirely normal. The darker fluid consists of a small amount of material added to prevent excessive foaming at the meniscus and improves readability.
5.1.1 FYRITE Refill Fluid (Storage Life, etc.)
FYRITE refill bottles should be stored at room temperature (70° F [21° C]) in the carton provided, and placed in use within one year.
NOTE: Before opening refill bottle, read the label and make certain to observe all precautions.
Page 10 Instruction 11-9026
FYRITE solution is
2
Page 15
FYRITE CO2 refill fluid may develop a white insoluble precipitate upon aging. The
precipitate does not affect fluid performance in any way, but if present, should be filtered out to prevent adherence to internal surfaces of the FYRITE.
To filter, place a clean piece of thin cloth or netting loosely over the open CO FYRITE and slowly pour refill contents into top reservoir. Before disposing of cloth,
2
rinse thoroughly with water. FYRITE fluid is corrosive!
FYRITE O
can be prevented by purging the FYRITE body with Nitrogen, natural gas or other
refill fluid reacts very rapidly with oxygen in air. Oxidation of absorbent
2
oxygen-free gas, just before filling, 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 refilling the O absorbent) is to invert the unit and place it over the 60 cc bottle of fluid. Then invert both so that the FYRITE is now upright and the O (see Figure 21a). Immediately install plastic Top Cap Ring without delay. This
FYRITE (and still limiting the oxidation of the
2
fluid is filling the instrument
2
method helps to minimize oxidation and improve the life of the fluid.
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).
Special sampling equipment to reduce high combustion gas temperatures (2000° F [1093° C]) to usable FYRITE temperature (ambient) and assemblies with extra large saturators for dry gas sampling are listed in Section 7.2, FYRITE Sampling Assemblies.
NOTE: Remember, for most accurate results, the FYRITE must be at temperature equilibrium with its surroundings (ambient temperature) and the incoming gas sample at the same temperature as the FYRITE.
5.3 Typical FYRITE Applications
Listed below are six models of FYRITE Indicators and two Aspirator Sampling Assemblies with part numbers identifying their application.
Bacharach Part Numbers
Aspirator Complete For Scale Sampling Kit with Testing Range FYRITE Assy. Fluid Case
Carbon 0 - 7.6% 11-7042 11-7029 10-5100 10-5053 Dioxide 0 - 20% 11-7032 11-7029 10-5057 10-5000
0 - 60% 11-7034 11-7029 10-5057 10-5032
0 - 7.6% 11-7044 11-7039 10-5103 10-5054
Oxygen 0 - 21% 11-7036 11-7029 10-5060 10-5011
0 - 60% 11-7038 11-7029 10-5060 10-5046
Instruction 11-9026 Page 11
Page 16
TYPICAL APPLICATIONS WITH FULL SIZE
SECTIONS OF FYRITE SCALES
0-7.6% CO2 or O
2
CO2 tests of controlled atmospheres in fruit, vegetable, and meat storage rooms. Oxygen determination in flammable gases. Oxygen tests to check atmospheres made inert with nitrogen (silos, fuel tanks, etc.)
0-20% CO
or 0-21% O
2
2
Flue gas combustion tests, oxygen deficiency tests, and CO Checking oxygen concentrations in hydrogen-cooled
tests of heat treating atmospheres.
2
generators and oil-sealed inert-gas transformers.
0-60% CO2 or O
2
Checking CO2 in inert gas blankets in tankers and barges carrying gasoline and other combustibles. CO
tests on lime kilns. Checking CO2 in sewage
2
plant digesters. Oxygen tests in connection with oxygen and gas anesthesiology.
5.4 CO2 FYRITE Only Combustion Testing
5.4.1 Percent CO2 Shows Volume of Excess Air (Refer to Figure 15)
For any given fuel, theoretical maximum percent CO produced when exactly enough air (but no excess air whatsoever) is supplied to burn all of the fuel. As increasing amounts of excess air are supplied, percentage CO naturally decreases from theoretical Ultimate CO2 due to the diluting effect of excess air.
Thus, measuring percent CO enough is supplied to permit clean combustion without adding so much that combus-
is also a method of indicating excess air to ensure that
2
tion efficiency is unnecessarily decreased.
Page 12 Instruction 11-9026
(Ultimate CO2 ) would be
2
2
Page 17
5.4.2 Too Much Excess Air Means Inefficient Combustion
Excess combustion air is heated and carries some of this heat to the flue where it is wasted. The FYRITE CO minimum (maximum CO
Analyzer is used to adjust combustion excess air to a
2
), which will permit clean efficient combustion.
2
Calculation of combustion efficiency is possible (assuming complete combustion) if percentage of CO
and net temperature of combustion products are known.
2
5.4.3 What is Proper CO2 Value?
Proper CO margin for variations in fuel, draft, atmospheric conditions, and mechanical wear.
is that which will ensure complete, clean combustion with some safety
2
Consult manufacturer of heating equipment for specific recommendations. Generally accepted values for good combustion practice in residential furnaces and boilers when firing the following fuels are:
Natural Gas ...... 8 to 9.5% CO
No.2 Oil ............ 10 to 12.5% CO
2
2
These are only guidelines, however, and in all cases recommendations of the equip­ment or fuel supplier would also include recommendations for allowable smoke (oil firing) or combustibles (gas firing), which are undesirable combustion by-products. Testing for smoke, CO, or combustibles is important since in extreme fuel rich firing, high CO
values also occur (see Figure 16).
2
5.4.4 How To Calculate Combustion Efficiency
Measure percent CO ture with a suitable thermometer (e.g., TEMPOINT) at the same sampling point.
in flue gases with FYRITE. Then measure flue gas tempera-
2
Deduct temperature of basement or combustion air supplied from measured flue gas temperature to obtain net flue gas temperature. Use a Bacharach FIRE EFFI­CIENCY FINDER to calculate combustion efficiency. Instructions for using the FIRE EFFICIENCY FINDER are printed on the face of this slide rule calculator.
5.5 O2 FYRITE Only Combustion Testing
5.5.1 Percent O2 Shows Volume of Excess Combustion Air (Refer to Fig. 15)
All fuels require some excess air (in addition to air theoretically required to burn the fuel) to ensure clean, complete combustion. As the amount of this excess air in­creases, the percentage of O2 in combustion products increase.
5.5.2 Too Much Excess Air Means Inefficient Combustion
Excess combustion air is heated and carries some of this heat to the flue where it is wasted. The FYRITE O2 analyzer is used when adjusting combustion air to mini­mum excess air (minimum O
Instruction 11-9026 Page 13
) which will permit clean, efficient combustion.
2
Page 18
5.5.3 What is Proper O2 Value?
Proper O clean combustion with adequate safety margin for variations in fuel, draft, atmo-
content for any fuel fired is the lowest O2 value that will ensure complete,
2
spheric conditions, and mechanical wear. Consult manufacturer of heating equip­ment or local authorities for specific recommendations. Figure 15 illustrates the relationship between CO
, excess air and oxygen for gas and oil.
2
For guidance, it should be added that modern boilers are capable of 80% or greater combustion efficiency. Rough guidelines for setting conventional power burners are 10-15% excess air for natural gas and 15-20% excess air for oil, with little or no smoke and carbon monoxide formation.
5.5.4 Measuring O
in Addition to CO
2
2
Figure 16 illustrates why it is good practice to measure oxygen, in addition to carbon dioxide, when firing gaseous fuels. Note that the same CO on both sides of the stoichiometric (or perfect) mixture. Carbon dioxide alone cannot
reading can be obtained
2
define proper excess air operation for gaseous fuels.
A check must also be made for the presence of oxygen, which confirms operation with excess air. Gaseous fuels should also be checked for presence of carbon monox­ide (CO) in the flue gases and adjusted for either “no CO” or to conform to applicable safety regulations.
5.5.5 Where is Percent CO
For residential and most commercial and industrial combustion units, percent CO or O2 is measured by analyzing gas sample obtained through a 1/4-inch diameter
or O2 Measured? (Refer to Figure 17)
2
2
hole located between the flue outlet (breeching) and any mechanical opening in the flue such as the barometric draft regulator or draft diverter. Best practice is to locate sampling hole at least six inches upstream from such flue openings. The metal FYRITE Sampling Tube should extend at least 2-1/2 inches into the flue gases.
For larger installations, consult manufacturer of combustion equipment for special instructions regarding sampling point, special sampling tube required, or advice on averaging readings.
Residential gas furnaces with built-in draft diverter (gas designed) will require the FYRITE metal Sampling Tube to be inserted as illustrated in Figure 17 to avoid dilution of flue gas sample.
Additional information on residential furnace combustion testing may be obtained from the following Bacharach publication:
Bulletin 4097 - Technical Combustion Brochure
Page 14 Instruction 11-9026
Page 19
PERCENT EXCESS AIR
Figure 15. Relation between Oxygen, CO2 and excess
air in flue gases for Natural Gas and Fuel Oil.
THEORETICAL EXCESS AIR CURVE
STOICHIOMETRIC MIX
Figure 16. CO
combustion air setting when firing gaseous fuels.
Instruction 11-9026 Page 15
measurements alone do not determine
2
Page 20
5.6 Background Gases Affecting FYRITE Readings
As a rule of thumb, background gases/vapors may be present in concentrations up to 1/2% by volume (5000 ppm) before they present a significant interference problem to the CO
An exception exists with the action of ammonia on Oxygen FYRITE Fluid. Ammonia neutralizes the acidic solution of chromous chloride, and therefore use of the O FYRITE with even trace amounts of ammonia in the backgrounds is not advised unless suitable filters are used.
Inert gases, even in concentrations approaching 100% by volume, do not interfere with either the CO (chemical reaction initiated) or a mechanical nature, with resultant error, but are also given up by the solution when the sample no longer contains the interfering substance. They can therefore be compensated for by saturating the FYRITE solution with samples containing the mechanical interferant as long as the back­ground stays reasonably constant. Usually 3 or 4 tests are sufficient to saturate FYRITE solution with the mechanical interferant in question.
or O2 FYRITE (20/21% ranges).
2
or O2 FYRITE. In general, interferences can be of a chemical
2
TYPICAL TYPE OF APPROXIMATE INTERFERENCE INTERFERENCE EFFECT (CO
FYRITE)
2
All Acid Gases Chemical 1:1 (SO
, H2S, Hydro-
2
cynanic Acid, Cyanogen, etc.).
2
TYPICAL TYPE OF APPROXIMATE INTERFERENCE INTERFERENCE EFFECT
FYRITE)
(O
2
Acetone Chemical 1:1 Acetylene Chemical 1:1 and other unsaturated hydrocarbons
CO
2
Mechanical, 20% CO background can be to approximately 30%
2
Can be zeroed out up
zeroed out in 3 to 4 CO2 background. tests if background remains constant.
Ammonia Chemical Ammonia neutralizes
FYRITE solution
O
2
and instrument use on this background is not advised unless suit­able filters are used.
Nitrous Oxide (N
Page 16 Instruction 11-9026
O) Mechanical - - -
2
Page 21
Figure 17. Checking CO2 of gas designed furnace (sampling tube inserted through draft diverter; flue gas temperature test can be made at same point).
5.7 General FYRITE Applications
It is only possible to specify a few general rules for such applications. Where pos­sible, sample should be obtained at a point where the gases are well mixed to a uniform composition. Where this is impossible; it will be necessary to average a number of measurements taken at different locations to obtain representative average. Where gases being sampled are not saturated with moisture (many non­combustion applications), it is very important to maintain the wool packing of Filter Saturator Tube in a moist condition.
NOTE: The FYRITE is calibrated to analyze gases which are normally saturated with moisture. Failure to moisten wool packing in filter saturator tube with water will cause FYRITE to indicate slightly lower than actual gas concentration.
Where special length sampling lines are required, add one more bulb squeeze to the 18 required with standard Sampling Assembly for each additional 3 cubic inches (50cc) volume of special sampling line.
EXAMPLE: For each 9 ft. of 3/1 6 inch (I.D.) additional length of sampling line, add one more bulb squeeze.
If it is necessary to trap a sample over water for later analysis, a minimum of 900 cc of sample will be required. If sample is trapped over water, it is good practice to use 10 to 15% NaCl (table salt) in the water to minimize absorption of CO water.
or O2 by
2
Trapping a sample over mercury will eliminate any possible error due to absorption of CO
or O2.
2
Instruction 11-9026 Page 17
Page 22
5.8 Altitude Correction Table
The gas concentration read on the FYRITE is directly dependent upon the mass of air in the sample. The aspirator bulb used in the FYRITE is a constant-volume pump, not a constant-mass pump. Altitude, therefore, affects the FYRITE reading due to the air’s density changing with altitude, thus requiring higher CO concentrations to reach the same mark on the scale.
Use the following table to find the altitude correction (e.g., add the correction to the reading to get the correct concentration).
TABLE 5-1. ALTITUDE CORRECTION TABLE
Altitude Correction %
Ft. (Meters) 20% CO
2
21% O
2
7% O2 or CO
1000 (305) 0.0 0.0 0.0
2000 (610) 0.0 0.0 0.0
3000 (914) 0.1 0.1 0.0
4000 (1575) 0.1 0.2 0.1
5000 (1219) 0.2 0.2 0.2
6000 (1829) 0.2 0.3 0.2
7000 (2134) 0.3 0.3 0.3
8000 (2438) 0.4 0.4 0.3
9000 (2743) 0.4 0.5 0.4
10,000 (3048) 0.5 0.6 0.5
11,000 (3353) 0.6 0.7 0.5
12,000 (3658) 0.7 0.8 0.6
13,000 (3962) 0.7 0.8 0.6
14,000 (4267) 0.8 0.9 0.7
or O
2
2
2
6.0 FYRITE MAINTENANCE
NOTE: With FYRITE vented and in a vertical position, it should be possible to adjust scale zero to the top of the fluid column. Refer to FYRITE Operation (Section 3.0) Steps 1 through 4 (for CO2) or Steps 1 through 5 (for O2) for proper setup. If this is not possible, add or remove a small amount of fluid as described below.
6.1 Increasing FYRITE Fluid To Proper Level
Refer to Figure 18. Hold FYRITE upright and cover hole in center of Plunger Valve with finger. Add clean water, a few drops at a time (dripping water faucet is con­venient) into space around Plunger Valve. Work Plunger Valve up and down several times. Repeat process until fluid is at proper level.
Page 18 Instruction 11-9026
Page 23
6.1.1 Decreasing FYRITE Fluid to Proper Level
Refer to Figure 19. To remove excess fluid, insert small diameter glass tube into FYRITE fluid through the small center FYRITE bore (with Top Cap Assembly removed). Seal open end of glass tube with finger and dip out fluid with glass tube until FYRITE fluid is at proper level. Avoid unnecessary exposure of O since it will rapidly absorb O2 and become exhausted.
fluid to air
2
6.2 Checking FYRITE Fluid Strength
6.2.1 CO2 FYRITE Fluid Only
Fresh FYRITE fluid will absorb all CO CO
. Where it is desirable to check fluid strength before taking FYRITE to the test
2
location to be used, or when a questionable (low) FYRITE reading is obtained the instrument may be tested on any sample of CO proximately 4% CO2) is often most convenient.
from more than 350 samples containing 10%
2
. Exhaled breath (containing ap-
2
Disconnect the rubber bushing and Sampling Hose Assembly from the Filter Saturator Tube. Place the rubber connector tip over the Plunger Valve and depress Plunger Valve down firmly with rubber connector tip. Take a deep breath, hold for 3 or 4 seconds and exhale at a steady rate into the rubber bushing end of the Sam­pling Hose Assembly. Simultaneously squeeze the Aspirator Bulb several times while exhaling breath. Release rubber connector tip from Plunger Valve while still exhaling breath. Perform steps outlined below to absorb exhaled breath into FYRITE fluid.
1. Absorb sample gas into FYRITE by inverting until fluid drains into top reser­voir, then turn upright to drain fluid into bottom reservoir. Repeat this step once more (two complete inversions total).
2 Hold FYRITE at 45° angle momentarily to allow fluid droplets to drain into
bottom reservoir.
3. With FYRITE held upright, permit fluid in column to stabilize a few seconds, then immediately read % carbon dioxide on scale at point corresponding to top of fluid column.
To check CO gas by inverting and turning upright. Repeat this step once more (two complete inversions total). If reading increases by more than 1/2 percent CO initial reading; replace fluid.
FYRITE fluid strength - DO NOT VENT FYRITE but reabsorb sample
2
as compared to
2
Formation of a frothy, persistent foam on FYRITE fluid also indicates need for fluid replacement. A few “beads” or small air bubbles floating near the small center bore wall is not considered foaming. FYRITE fluid may be colored for ease in readings. Color has no bearing on fluid strength or ability to absorb CO
Cloudy fluid or small flakes of solid material in fluid do not necessarily mean CO fluid is exhausted. Precipitate may form in CO2 Refill Bottles due to extended
.
2
2
storage, and can be filtered through cheese cloth or other screen like material when refilling FYRITE.
Instruction 11-9026 Page 19
Page 24
20
16
12
8
%CO
2
4
0
®
20
16
12
8
%CO
2
4
0
®
Figure 18. Increasing FYRITE fluid to proper level.
TOP GASKET
20
16
12
8
%CO
2
4
0
®
TOP CAP/ PLUNGER VALVE ASSEMBLY
OVAL HEAD SCREWS
TOP CAP RING WITH GASKET
Figure 19. Decreasing FYRITE fluid to proper level
20
16
12
8
%O
2
4
0
®
Figure 20. Removing top gasket. Figure 21. Flushing FYRITE with
a stream of O see Fig. 21a for alternate method).
Page 20 Instruction 11-9026
free, inert gas (Also
2
Page 25
NOTE: If compressed gas standards are used to check
FYRITE accuracy don’t forget to saturate filter saturator wool packing as such gas standards are usually supplied “bone dry”.
6.2.2 O
Fresh FYRITE fluid will absorb all O 10% O FYRITE Fluid strength can be checked by performing steps outlined below:
FYRITE Fluid Only
2
from approximately 100 samples containing
. After completing test (as outlined in Section 3.0 Steps 1 through 9) O
2
2
2
1. DO NOT VENT FYRITE, but reabsorb sample gas into FYRITE by inverting until fluid drains into top reservoir, then turn upright to drain fluid into bottom reservoir. Repeat this step three (3) more times (four complete inversions total).
2. Hold FYRITE at 45° angle momentarily to allow fluid droplets to drain into bottom reservoir.
3. With FYRITE held upright, permit fluid in column to stabilize a few seconds, then immediately read % oxygen on scale at the point corresponding to top of fluid column. If reading increases by more than 1/2 percent O2 as compared to the initial reading, replace fluid.
When it is desirable to check fluid strength before taking the FYRITE to a location where it will be used, it can be conveniently tested on a sample of atmospheric air which contains 20.9% O2.
NOTE: Make certain wool in filter saturator tube is moistened with water when using FYRITE in a non-combustible applica­tion where the gas sample is not fully saturated with water vapor.
Formation of a frothy, persistent foam on FYRITE fluid also indicates need for fluid replacement. A few “beads” or small air bubbles floating near the small center bore wall is not considered foaming. Color of FYRITE O ability to absorb oxygen although towards the end of fluid life, a greenish cast can be
(blue) fluid is not an index of
2
detected.
NOTE: If compressed gas standards are used to check FYRITE accuracy, don’t forget to saturate filter saturator wool packing as such gas standards are usually supplied “bone dry”.
6.3 Replacing FYRITE Fluid (Refer to Figs 20, 21, and 22)
CAUTION
Because of the corrosive effect of the FYRITE fluid, always change FYRITE fluid in immediate vicinity of a sink with running water available as shown in Figure 18.
Instruction 11-9026 Page 21
Page 26
Remove 4 screws, metal Top Cap Ring, plastic Top Cap Assembly and Top Gasket. Drain old fluid from FYRITE and rinse all parts in clean, lukewarm water.
NOTE: FYRITE fluid is corrosive to skin, clothing, some metals, and painted or lacquered surfaces. Dispose of these fluids in accordance with Local, State and Federal Laws. If draining into a porcelain sink is permitted, keep water faucet turned on while draining and flush for at least 1/2 minute afterwards.
NOTE: Examine top gasket for warpage, if distorted as shown in Figure 22, replace gasket with part # 11-0143 before proceeding.
Drain all parts of excess water. Stand FYRITE Body upright to center replacement Top Gasket in recess provided in top flange of body.
O2 FYRITE Only: Before adding fluid, flush FYRITE with a stream of O2 - free, inert gas (Figure 21) or be prompt in reassembling Top Cap to prevent excessive fluid contact with air.
Uncap FYRITE fluid bottle, invert FYRITE and place over the bottle. Invert both FYRITE and bottle (Figure 21a) so that FYRITE comes to an upright position and the fluid is filling the unit. Immediately install plastic Top Cap Assembly and metal Top Cap Ring without delay.
CO
FYRITE Only: Uncap CO2 Refill Bottle and pour entire contents into FYRITE.
2
Reinstall plastic Top Cap Assembly and metal Top Cap Ring.
CO
/ O2 FYRITEs: Make certain that Top Cap Ring Gasket (11-0109, Figure 33) is
2
in place between metal Top Cap Ring and plastic Top Cap. Draw the 4 machine screws down with light screwdriver force.
Then, going from one screw to the next, draw down 1/4 turn until all are firmly tightened. Avoid excessive force in tightening which may damage plastic parts.
6.4 Inspection of FYRITE for Fluid Leakage
Gradual loss of fluid, moisture or dried encrustation around Plunger Valve does not indicate fluid leakage. Gas enters and leaves unit during sampling with consider­able velocity and some fluid vapor is carried out during normal sampling. To check Top Assembly for fluid leakage in upright position, depress Plunger Valve and release.
Note the scale reading at top of fluid column, and then stand FYRITE upside down overnight in glass or porcelain test dish (See Figure 23). Then, return FYRITE to upright position and, after allowing 5 minutes for drainage, depress and release Plunger Valve. Leakage will be evidenced by lower scale reading. Extreme leakage will be apparent by presence of fluid in test dish.
Page 22 Instruction 11-9026
Page 27
®
0
4
2
%CO
8
12
16
20
20
16
12
8
2
%CO
4
0
Figure 21a. Alternate filling method. Invert FYRITE (with bottle in place) to upright position.
®
0
4
%CO
2
8
12
16
20
Figure 23. FYRITE inverted in test disk (overnight) for leakage test.
Figure 22. Examining top gasket for warpage.
TOP CAP
ASSEMBLY
GASKET
20
16
12
8
%CO
2
4
Top Gasket used in 7%,
0
®
20% & 21% Models only
BODY
Figure 24. Top gasket properly centered in top flange of body.
Instruction 11-9026 Page 23
Page 28
Follow the same procedure to check fluid leakage from Bottom Cap Assembly with FYRITE stood overnight in the upright position.
When leakage is proven, examine plastic and rubber parts for deterioration to determine replacement parts necessary for repair, or drain instrument and return if factory service or repair is desired.
6.5 Cleaning FYRITE
Use only soapy lukewarm water if cleaning is required (lukewarm water is usually sufficient).
NOTE: Use of gasoline, naptha, carbon tetrachloride or any other organic solvent or oil will destroy plastic and rubber parts.
6.6 Replacing FYRITE Plastic and Rubber Parts (Refer to Illustrated
Parts List FYRITE CO
Replace plastic parts when cracked or crazed in location exposed to fluid and rubber parts when badly swollen, warped or showing other evidence of deterioration.
In replacing Top Gasket, make certain it is properly centered in the recess provided in top flange of FYRITE Body (See Figure 24). When installing plastic Top Cap Assembly, be sure that assembly is centered on Top Gasket.
To remove Top Cap Assembly or replace Top Cap, Plunger Valve, or Plunger Tip Gasket, use the procedure as outlined in Section 6.3.
[Section 7.0 and Fig. 33])
2/O2
When replacing Plunger Tip Gasket, simply depress Plunger Valve against its spring limit and strip old Tip Gasket from the end of Plunger Valve.
Before assembling new Gasket, wet inside surface of Tip Gasket, then force it over the end of Plunger Valve (after depressing Plunger Valve against the spring limit).
Make certain that new Tip Gasket is seated uniformly against the mating surface in plastic Top Cap.
To replace Diaphragm, stand FYRITE upside down, remove 4 screws and metal Bottom Cap.
Refer to Figure 25a. Remove old Diaphragm and center new replacement with the lettering facing you, so that after the FYRITE Bottom Cap is installed the letters will face up into its recess. Center Bottom Cap Assembly in Body Recess and reinstall 4 screws, observing same precautions in tightening as outlined in Section 6.3.
To replace Body, remove the 4 hex head Bezel screws and 4 Bezels. Install Bezels on new Body.
NOTE: Make certain the rubber bezel gaskets are properly seated and clamped between bezel and body as shown in Figure 25.
Page 24 Instruction 11-9026
Page 29
LETTERING
®
0
4
%CO2
8
12
16
20
BOTTOM CAP
(RECESS)
Figure 25a. Replacement Diaphragm properly installed.
Figure 25. Locating Bezel Rubber Gaskets.
Figure 26. FYRITE Sampling Assembly; Locating Inlet/Outlet Check Valves.
Instruction 11-9026 Page 25
Page 30
6.7 Aspirator Bulb - Sampling Assembly (Refer to Figs. 26, 27, & 28)
Defective Check Valves or a leaking Sampling Assembly can result in sample loss, or sample dilution with resultant loss of accuracy.
To inspect Sampling Assembly, seal hole in the center of rubber Connector Tip firmly with finger and squeeze Aspirator Bulb (Figure 27). Bulb should remain firm. If Bulb collapses, check Bulb and Hose to Connector Tip for cracks or other source of leakage. Replace defective parts. If there are no apparent leaks in the Sampling Assembly, replace Inlet Check Valve. Small hole end of Inlet Check Valve fits in Hose and large hole end fits in the Aspirator Bulb (Figure 26).
Now seal end of metal Sampling Tube with finger, and collapse Aspirator Bulb. (Figure 28). If the Bulb returns to original shape in less than 15 seconds, inspect Hose, Filter, Saturator Tube and Metal Sampling Tube for leaks. If none are found, replace the Outlet Check Valve. Small hole end of Outlet Check Valve fits in Aspirator Bulb and large hole end fits in the Hose (Figure 26).
Discard Filter Packing when it becomes dirty or clogged. Push old packing out of, and new packing into, Filter Saturator Tube with a pencil or small rod (See Sec­tion 6.9).
6.8 Storing FYRITE and Refill Fluid
When FYRITE is not used over periods between tests, store it and its Sampling Assembly in a cool, dry place. Prolonged storage, for example, at high temperatures reached in an automobile trunk over the Summer is not recommended. When stored unused over the Summer, it is good practice to drain old fluid and replace with fresh charge (fluid) when needed in the Fall.
FYRITE Refill Fluid should also be stored in a cool, dry location in the carton provided. A recommended practice is to accumulate stock only sufficient for one year requirement and to use oldest stock first. Fluid can be tested for performance according to Section 6.2.
Use only Bacharach CO below contain three Refill Bottles each.
or O2 Fluid Refills for the range FYRITE selected. The Kits
2
7% CO2 range ............................. Refill Kit 10-5100
20% and 60% CO2 range ........... Refill Kit 10-5057
7% O2 range ............................... Refill Kit 10-5103
21% and 60% O2 range .............. Refill Kit 10-5060
6.9 Replacing Saturator Filter Packing Part #11-0121
(Refer to Figs 29 thru 32)
Remove the filter tube nipple and bushing (See Figure 29) from each end of the tube. Use a pencil or similar object to remove packing when it becomes dirty or clogged.
Wrap replacement packing around the hand (See Figure 30). If testing unsaturated gases (most non-combustion applications), saturate packing in water as shown in Figure 3, and squeeze out excess moisture.
Insert saturated packing using a pencil or small rod into filter tube (See Figure 32); then reassemble nipple and bushing.
Page 26 Instruction 11-9026
Page 31
RUBBER CONNECTOR TIP (HOLD FINGER HERE)
ASPIRATOR BULB SHOULD REMAIN FIRM WHEN SQUEEZED
Figure 27. Testing Sampling Assembly (outlet side) for leaks.
CHECK FOR BULB INFLATION AFTER SQUEEZING
SAMPLING TUBE END (HOLD FINGER HERE)
Figure 28. Testing Sampling Assembly (inlet side) for leaks.
Figure 29. Removing End Plugs from Saturator Filter Tube.
Instruction 11-9026 Page 27
Page 32
Figure 30. Wrapping Replacement Filter Material.
Figure 31. Wet Filter Material then squeeze out excess water.
Figure 32. Installing wetted Filter Material into Saturator Tube.
Page 28 Instruction 11-9026
Page 33
7.0 ILLUSTRATED PARTS LIST FYRITE CO2/O
2
(Refer to Figure 33 FYRITE Parts Breakout)
Part # Description Qty-Rq’d
11-0102 Bezel 4
01-0661 Oval Head Screw 8
11-0110 Bezel Screw 4
11-0109 Top Cap Ring Gasket (Optional, Part of 11-0136) 1
11-0105 Scale Screw 1
02-3690 Scale Screw Nut 1
11-0021 Diaphragm 1
11-0126 Bottom Cap 1
11-0132 Top Cap 1
11-0019 Valve Plunger 1
11-0026 Valve Plunger Spring 1
11-0020 Valve Plunger Gasket 1
11-0136 Top Cap Ring with Gasket 1
11-0143 Top Gasket (7%, 20% & 21% Models only) 1
11-0140 FYRITE Body (All Models except 7.0% CO2 / O2)1
11-0154 FYRITE Body (7% Models only) 1
11-0062 Filler 60% FYRITE (Adapter Plug) 1
05-5134 Bezel Gasket “O” Ring 2
05-5169 O-Ring Filler (Outer 60%) 1
05-5155 O-Ring Filler (Inner 60%) 1
11-0144 CO2 Scale 20% 1
11-0145 O
11-0147 CO
11-0150 O
11-0155 CO
11-0157 O
10-5057 Carton of FYRITE CO
10-5060 Carton of FYRITE O
10-5100 Carton of FYRITE CO
10-5103 Carton of FYRITE O
Scale 21% 1
2
Scale 60% 1
2
Scale 60% 1
2
Scale 7% 1
2
Scale 7% 1
2
Fluid (3 Bottles) 20/60% range Models 1
2
Fluid (3 Bottles) 21/60% range Models 1
2
Fluid (3 Bottles) 7% range Models 1
2
Fluid (3 Bottles 7% range Models 1
2
Instruction 11-9026 Page 29
Page 34
7.1 FYRITE ILLUSTRATED PARTS
Figure 33. FYRITE parts breakout.
Page 30 Instruction 11-9026
Page 35
7.2 PARTS LIST FOR FYRITE SAMPLING ASSEMBLIES
STANDARD SAMPLING ASSEMBLY Part No. 11-7029 Gases saturated with water vapor (combustion products). Dry gases when filter material is wetted.
OPTIONAL INDUSTRIAL SAMPLING ASSEMBLY Part No. 11-7046 High temperature combustion applications where heat radiation and high localized ambients are factors. Optional ceramic High Temperature Sampling Tube for sample gases over 1400° F.
OPTIONAL SAMPLING ASSEMBLY Part No. 11-7045 Combined FYRITE O2, CO2, and Monoxor CO tests on combustion products.
OPTIONAL SAMPLING ASSEMBLY Part No. 11-7039 Large Filter-Saturator Assembly provides artificial sample saturation for non­combustion FYRITE applications. Bacharach Indicator Tubes may be used with this Assembly.
Instruction 11-9026 Page 31
Page 36
Current Former Part # List # Description # Req'd
11-0152 10-0019 Connector Tip with Tube 1
11-0156 10-0029 Rubber Tubing, 10' Length 1
11-0118 10-0020 Rubber Tubing, 6" Length 2
11-0165 10-0030 Filter Tube, Aluminum 1
19-5004 19-9004 Gas Collecting Bladder with Orifice 1
11-0120 10-0022 Aspirator Bulb 1
11-0138 10-0023 Inlet/Outlet Valve (Red) 2
11-0119 10-0024 Rubber Tubing, 3' length 1
11-0180 10-0025 Filter Nipple with Bushing 2
11-0130 10-0026 Filter Tube, Plastic 1
11-0106 10-0027 Sampling Tube 1
11-0161 10-0040 Condenser Coil 1
11-0151 10-0041 Moisture Trap Assembly 1
11-0179 10-0042 Rubber Tubing, 15' length 1
11-0121 10-0033 Envelope of Filtering Material (10 per pack)
11-0164 10-0047 Ceramic High Temperature Gas
Sampling Probe, 18" length (optional)
11-0181 10-0032 Filter Saturator (Aluminum) Assembly
Comprising 11-0180, 11-0122, and 11-0165
Page 32 Instruction 11-9026
Page 37
Instruction 11-9026 Page 33
Page 38
Page 34 Instruction 11-9026
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