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Combustion 911
Supplying and Serving the Combustion Industry
an Olsträd Engineering Company

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FLO2 Flue O2 Analyzer

FLO2 Flue O2 Analyzer -- DISCONTINUED

This item has been discontinued and is not available for order online
  • Fast response time
  • Digital display for easy readings
  • Rugged, Battery-powered and handheld for portability in any environment
  • Easy calibration procedures
  • Particulate and moisture filters for inexpensive and easy maintenance.

Description

Does your furnace take too long to reach operating temperature? Are you losing product yield due to oxidation and scale build-up? Are you wasting fuel?

These are symptoms of excess air and/or tramp air in your furnace. Excess air is that which enters the furnace through the burners, in excess of what is needed for combustion. Tramp air is that which enters the furnace through leaking seals and miscellaneous openings in the furnace. Extra air can cause longer heat-up times, product loss due to increased oxidation, and fuel waste.

As an example, let's say your furnace is designed to run at 2.2% O2 (10% excess air), and 2000°F, but is now running at 6.6% O2 (40% excess air). Because you must heat this additional air, you now require 10% more fuel to run at the same temperature.

% Fuel Lost to Heat Excess & Tramp Air to Flue Temp
O2 %/vol (Dry Basis) %Excess Air Furnace Flue Temperature(°F)
1,400 1,500 1,600 1,700 1,800 1,900 2,000 2,100 2,200
2.2% 10.0% 2.4% 2.6% 2.8% 3.0% 3.1% 3.3% 3.5% 3.7% 3.8%
3.1% 15.0% 3.7% 3.9% 4.2% 4.4% 4.7% 5.0% 5.2% 5.5% 5.8%
4.0% 20.0% 4.9% 5.2% 5.6% 5.9% 6.3% 6.6% 7.0% 7.3% 7.7%
4.7% 25.0% 6.1% 6.5% 7.0% 7.4% 7.8% 8.3% 8.7% 9.2% 9.6%
5.4% 30.0% 7.3% 7.8% 8.4% 8.9% 9.4% 9.9% 10.5% 11.0% 11.5%
6.1% 35.0% 8.5% 9.2% 9.8% 10.4% 11.0% 11.6% 12.2% 12.8% 13.4%
6.7% 40.0% 9.8% 10.5% 11.2% 11.9% 12.6% 13.3% 14.0% 14.7% 15.3%
7.2% 45.0% 11.0% 11.8% 12.6% 13.3% 14.1% 14.9% 15.7% 16.5% 17.3%
7.7% 50.0% 12.2% 13.1% 14.0% 14.8% 15.7% 16.6% 17.4% 18.3% 19.2%
8.2% 55.0% 13.4% 14.4% 15.3% 16.3% 17.3% 18.2% 19.2% 20.1% 21.1%
8.6% 60.0% 14.7% 15.7% 16.7% 17.8% 18.8% 19.9% 20.9% 22.0% 23.0%

These problems are often correctable through proper burner adjustment, furnace pressure control, or by repairing door or hearth seals.

How do you know you're addressing the relevant problem? The answer is the easy to use and cost effective Combustion 911 FLO2 Flue Gas Analyzer. This device reads the oxygen in your furnace, which is directly related to the excess air, as air contains 20.9% oxygen. Armed with the FLO2, you can pinpoint the problem, take steps to correct it, and verify the results.

If you maintain industrial furnaces, the FLO2 belongs in your toolkit!

Documentation

View the O2 Analyzer Brochure O2 Analyzer Brochure

Accessories

Model and Description Price Cart
FLO2 Cell
Replacement electromechanical fuel cell sensor (one already ships with FLO2).
Contact Us Not available for online purchase.
FLO2 Extension
Spare sample tube extension. 1/4″ stainless extension tube. 33 inch length (one already ships with FLO2).
Contact Us Not available for online purchase.

Specifications

General Specifications
Sensor: Electrochemical Fuel Cell
Life: 6-9 Months
Cell Warranty: 6 Months
Analyzer Warranty: 12 Months
Calibration Gas: Ambient Air
Calibration Period: Weekly
Measurement Range: 0-25% Oxygen by Volume
Resolution: 0-5%, X.XX (2 decimals)
5-25%, X.X (1 decimals)
Display: 0.4″ LED
Response Time: T90 < 10 seconds
Accuracy: 0-5% Range: 2% of measurement range at 25°C
5.1-25% Range: 0.5% of measurement range at 25°C
Warm-up: Instantaneous
Sampling: Built in stainless steel sample probe. Integral particulate and condensate filter.
Enclosure: Material: Molded High-Impact Plastic
Size: 5.5″ × 3.5″ × 1.5″
Weight: 1 lb. with sensor and batteries.
Power: Four AA Batteries
Battery life: up to 8 hours in continuous mode

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O2 Analyzers
Replacement Parts
FLO2 Oxygen Analyzer
Price:
Description: Includes 4 AA batteries, O2 Cell, and 33″ sample extension tube.
Price:
Description: Replacement O2 cell.
Price:
Description: Spare sample extension tube.

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