GA-21plus portable flue gas analyzer

oWorldwide competence


	USA

GA-21plus


Portable gas analyzer using electrochemical gas sensors.
Description GA-21plus

	The madur 21plus portable flue gas analyzer utilizes the latest available technology for measuring and controlling combustion gas parameters in boilers, burners, industrial engines, and other fuel-burning combustion systems. Two different models are available that provide standard measurement features, as well as advanced sample conditioning capabilities when EPA precompliance or compliance methods are required. Each is compact, easy to operate, and complete with all the necessary functions for maintaining a proper combustion management program. This portable flue gas analyzer is small enough to qualify as hand baggage on the airlines and fit under the seat! Both models of this flue gas analyzer can be found around the world wherever fuel is burned, working to keep our environment clean and fuel costs down.
	GA-21plus in soft case
The GA-21plus is a unique, extremely lightweight, but robust, instrument designed to assist burner and engine operators in field maintenance of industrial combustion systems. The instrument is a four or five gas analyzer providing semicontinuous measurements of O₂, CO, stack temperature, draft, NO, NO₂, SO₂, or CxHy. Calculations include CO₂, combustion efficiency, NOx, excess air and stack losses. A high-quality pump pulls a sample through the supplied 10 foot sample line and probe into the analyzer through an inline water trap and filter. A reservoir collects the gases where they are then “pushed” to the temperature compensated sensors at a controlled flow rate allowing for extremely accurate gas analysis for each channel. A large full-line display shows all measured and calculated parameters simultaneously for easy viewing, while an integral dot matrix impact printer provides hard copy of all parameters at the push of a button. This is the portable flue gas analyzer of choice in many industries, used for general maintenance as well as EPA compliance testing. This is a workhorse, no laboratory instrument, despite its accuracy. Precompliance testing and general tuning of burners, all in one package!
		GA-21plus in hard case
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Features GA-21plus

Highly accurate electrochemical analysis Backlit digital display with zoom Easily transportable lightweight design Graphics for 5 minute hysteresis can be displayed and printed RS232C interface to computer CO fresh air bypass avoids sensor saturation Temperature compensated cells Optional probe and cable lengths available Optional gas preparation system Infrared sensors for methane (CH₄) and carbon dioxide (CO₂) available
Applications GA-21plus

Boiler flue gas analysis Engine emission testing Burner management Precompliance and compliance level testing Title V permitting Meets SCAQMD requirements – includes automatic O₂ correction Landfill measurements with the optional infrared sensors for methane and carbon dioxide. Environmental reporting capabilities Peltier cooler, heated sample line, heated probe and filter. Other portable flue gas analyzers also available upon request. Please contact us for more information.
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Measurements data GA-21plus

Parameter	Measuring method	Range	Resolution	Accuracy	Detection Limit	Time (T90)

Gases measured in standard configuration
O₂ - oxygen, volumetric concentration	electrochemical gas sensor	0..25 %	0.01 %	±0.2 % or 2 % rel.	0.01 %	45 s
CO₂ - carbon dioxide, volumetric concentration	calculated from volumetric concentration of O₂	0..25 %	0.01 %	±0.2 % or 2 % rel.	0.01%	45 s
CO - ambient carbon monoxide, volumetric concentration	electrochemical gas sensor	0..100 ppm	0.1 ppm	±5 ppm or 5 % rel.	1 ppm	45 s
CO - carbon monoxide, volumetric concentration	electrochemical gas sensor	0..20000 ppm	1 ppm	±5 ppm or 5 % rel.	5 ppm	45 s
COmg - carbon monoxide, mass concentration	calculated from volumetric concentration of CO	0...	1 mg/Nm³	±10 mg/Nm³ or 5 % rel.	10 mg/Nm³	45 s
COrel - carbon monoxide, mass concentration relative to O₂	calculated from volumetric concentration of CO and O₂	0...	1 mg/Nm³	±10 mg/Nm³ or 5 % rel.	10 mg/Nm³	45 s
Gases measured with optional IR sensors
CO₂ - carbon dioxides, volumetric concentration	IR sensor	0..5 % 0...1000 %	0.01 % 0.1 %	0.20 %	0.20 %	45 s
CH₄ - Methane, volumetric concentration	IR sensor	0...5 % 0...100 %	0.01 % 0.1 %	0.20 %	0.20 %	45 s
Gases measured with optional electrochemical sensors
NO - volumetric concentration of nitric oxide.	electrochemical gas sensor	0..1000 ppm	1 ppm	±5 ppm or 5 % rel.	5 ppm	45 s
NOmg - mass concentration of nitric oxide.	calculated from volumetric concentration of NO	0...	1 mg/Nm3	±15 mg/Nm³ or 5 % rel.	15 mg/Nm³	45 s
NOrel - mass concentration of nitrogen oxides relative to O₂	calculated from volumetric concentration of NO and O₂	0...	1 mg/Nm3	±15 mg/Nm³ or 5 % rel.	15 mg/Nm³	45 s
NO₂ - volumetric concentration of nitrogen dioxide.	electrochemical gas sensor	0..1000 ppm	1 ppm	±5 ppm or 5 % rel.	5 ppm	45 s
NO₂mg - mass concentration of nitrogen dioxide.	calculated from volumetric concentration of NO₂	0...	1 mg/Nm3	±15 mg/Nm³ or 5 % rel.	15 mg/Nm³	45 s
NO₂rel - mass concentration of nitrogen dioxide relative to O₂	calculated from volumetric concentration of NO₂ and O₂	0...	1 mg/Nm3	±15 mg/Nm³ or 5 % rel.	15 mg/Nm³	45 s
SO₂ - volumetric concentration of sulfur dioxide.	electrochemical gas sensor	0..5000 ppm	1 ppm	±5 ppm or 5 % rel.	5 ppm	45 s
SO₂mg - mass concentration of sulfur dioxide.	calculated from volumetric concentration of SO₂	0...	1 mg/Nm³	±15 mg/Nm³ or 5 % rel.	15 mg/Nm³	45 s
SO₂rel - mass concentration of sulfur dioxide relative to O₂	calculated from volumetric concentration of SO₂ and O₂	0...	1 mg/Nm³	±15 mg/Nm³ or 5 % rel.	15 mg/Nm³	45 s
Temperature measurements
Tgas - flue gas temperature	Thermocouple	-10..1000°C	1°C	±2 °C or 1.5 % rel.	1 °C	30 s
Tamb - ambient temperature	Thermistor	-10..100°C	1°C	±1 °C	1 °C	30 s
T1 - external input	Thermocouple	0...1600°C	1°C	±2 °C or 1. 5 % rel.	1 °C	10 s
T2 - external input	Thermistor	-20...1000°C	1°C	±2 °C or 1. 5 % rel.	1 °C	10 s
Other measured values
U/I - external input	ADC	-20...+20 V -20...+20 mA	0.01 V 0.01 mA	±0.02 V ±0.02 mA	0.01 V 0.01 mA	10 s
Pressure	DMS bridge	-25 hPa ... +25 hPa	0.1 Pa	± 2 Pa or 5 % rel.	1 Pa	10 s
Flow velocity (Option)	Pitot tube	1...50 m/s	0.1 m/s	0.3 m/s or 5 % rel.	0.1 m/s	10 s
Soot/smoke test	Bacharach method	0..9	0.5	0.5	0.5
Calculated parameters
TI (CO/CO₂-Toxic Index)	calculated	0...0.01	0.0001	5 % rel.	0	10 s
Lambda - excess air number	calculated	1..10	0.01	2 % rel.	0	10 s
qA - combustion losses	calculated	0..100 %	0.1 %	2 % rel.	0 %	10 s
Eta - efficiency	calculated	0..120 %	0.1 %	2 % rel.	0 %	10 s


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