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GA-40Tplus
Portable gas analyzer using electrochemical and IR gas sensors.
Description GA-40Tplus
The madur GA-40Tplus is a highly accurate industrial grade portable combustion analyzer for pre-compliance and compliance level testing on industrial boilers, engines and compressors. Utilizing the preferred EPA Method 7E sample conditioning system for N0x comprising a heated sample line, heated filter, and peltier cooler, the 40Tplus is one of the most advanced portable compliance analyzers on the market today. The conditioning system is designed primarily for use in long term testing (six or more hours) and to maximize accuracy of N02 and S02 so no losses are incurred during the extraction process, and for stacks which have excessive moisture that could be present in the sample, increasing accuracy and lifetime of all measuring equipment. This portable combustion analyzer offers all the features of a fixed system in a lightweight package, including optional infrared sensors for carbon dioxide and methane.

The measurement of nitrogen dioxide and sulfur dioxide is no longer a problem and does not need more complicated equipment. The GA-40Tplus portable combustion analyzer can also be used for a short time in place of a fixed system in case of a sudden breakdown.
GA-40Tplus portable combustion analyzer showing the display and connection for the heated hose.
GA-40Tplus portable combustion analyzer showing carrying case for the heated hose and the optional remote control unit manus.
The GA-40Tplus portable combustion analyzer offers the base combustion parameters of all madur instruments providing O2, CO, NO and CO2 calculation, stack and ambient temperature, draft measurements and your choice of up to 5 toxic sensors including NO2, SO2, IR CO2, H2, and infrared methane CH4. All parameters are displayed on the large graphic display or printed on the integral impact printer. The menu and keypad are the same as the GA-21plus so users familiar with madur instruments will find the GA-40Tplus a very simple instrument to utilize in their program. A 10 ft. heated sample line, heated filter and optional probe lengths round off this portable combustion analyzer. The analyzer can also operate from an internal rechargeable battery for several hours, but without gas cooler or heated hose. These items require mains power to operate. Provides hard copy of all parameters at the push of a button.
Filter is included and the probe length should be chosen at purchase. The portable combustion analyzer is also housed in a heavy duty padded cadura nylon case around a steel frame with shoulder harness and snap off lid. A separate case is provided to carry the heated line and probe, and altogether the instrument is under 30 lbs complete. An RS232C interface is provided to operate with madur software and to operate the manus remote display module now available. Full graphics are also provided for all measured parameters for visual verification of combustion and emission values that can be read on the display or printed on the integral fast action dot matrix printer. The GA -40Tplus portable combustion analyzer is truly the best value today for an analyzer used in compliance and pre-compliance applications. The sample conditioning system will ensure that no moisture can interfere with the working of the sensors or dissolve the soluble gas components such as sulfur dioxide or nitrogen dioxide, as required for EPA compliance testing. Practically all possible requirements are covered with this portable combustion analyzer in one compact unit.
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Features GA-40Tplus
  • Complete compliance level portable combustion analyzer
  • Meets EPA CTM 034 standards, SCAQMD, Method 6, 7E EPA sample conditioning
  • Field serviceable and easy to calibrate and maintain
  • Includes heated sample line, chiller, and heated filter
  • CO bypass for purging sensor with fresh air in high gas conditions
  • Extremely accurate and compact design for on site testing
  • Optional heated hose and probe lengths available
  • Smoketest according to Bacharach now possible
  • Includes basic software for reading stored results and data processing
  • Operates without gas cooler and heated hose from internal rechargeable battery

Physical Dimensions:

  • Unit - 19’’ W x 11’’ H x 7’’ D - Padded cadura nylon or leather case with steel frame and rack mount design.
  • Heated hose and Probe case - 17’’ W x 11’’ H x 5’’ D - Protective padded case for heated hose, filter, probe, and other accessories. Instrument must run on mains power for heated hose and dryer to work.
  • Probe - 12’’ ss 1/4’’ OD threaded probe pipe with thermocouple. Additional probe lengths available, up to 5' from stock.
  • Heated Hose - 10 foot controlled heated hose with 425 °F max. temperature, heated probe head with filter. Max temperature 425 °F.
  • Other lengths of heated hose are available on request. Soot test also possible with heated hose using special adapter.

Electrical Power:

  • 110/230 VAC for use with heated hose and cooler/ Lead acid rechargeable battery for use without heating hose or activating cooler. User selectable power options standard. Non volatile memory to save results even in the case of total power failure.

Display:

  • 3" x 2.5" LCD backlit display with zoom and graphics. Full 24 character scrolling display to show all menus and functions. Adjustable contrast. Display can be duplicated on the remote control unit or on the PC using the online capability of the software (optional). Display of gas concentration as ppm, mg/m3. Results also available relative to oxygen concentration in all cases

Printer:

  • 2.25" 24-character dot matrix printer. Uses standard calculator paper and replaceable color ribbon.

Data Storage:

  • 1024 sets of measurement results. Additional storage in data banks-up to 30 banks total. On line data output via RS232C output to madur software. Microsoft software pending. All graphics can be stored and printed for each parameter measured including gases and temperatures. Stored results can be read from the portable combustion analyzer to a PC.

Communications:

  • RS-232C port, 9600 baud, half-duplex, 1 start bit, 8 data bits, 1 stop bit, no parity. Standard computer program for data treatment included.

Fuel Selections:

  • 22 preset fuel selections with 10 optional user settable selections for users to enter calorific values of fuels and co-fuels. Fuel selection only affects calculations for efficiency, and CO2. Carbon dioxide measured by infrared sensor independent of fuel selection.
Applications GA-40Tplus
  • 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.
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Measurements data GA-40Tplus
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 - carbon monoxide, volumetric concentration
electrochemical gas sensor
0..20000 ppm
1 ppm
± 5 ppm or
5 % rel.
1 ppm
45 s
COmg - carbon monoxide, mass concentration
calculated from volumetric concentration of CO
0...
1 mg/Nm3
± 10 mg/Nm3
or 5 % rel.
1 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.
1 mg/Nm3
45 s
Gases measured with optional IR sensors
CO2 - carbon dioxides volumetric concentration
IR sensor
0..25 %
0...100 %
0.01 %
0.20 %
0.01 %
45 s
CH4 - Methane, volumetric concentration
IR sensor
0...5 %
0...100 %
0.01 %
0.1 %
0.20 %
0.01 %
45 s
Gases measured with optional electrochemical sensors
NO / NOx - volumetric concentration of nitrogen oxides.
electrochemical gas sensor
0...5000 ppm
1 ppm
± 5 ppm or
5 % rel.
1 ppm
45 s
NOmg/NOxmg - mass concentration of nitrogen oxides
calculated from volumetric concentration of NO
0...
1 mg/Nm3
± 5 mg/Nm3
or 5 % rel.
1 mg/Nm3
45 s
NOrel / NOxrel - mass concentration of nitrogen oxides relative to O2
calculated from volumetric concentration of NO and O2
0...
1 mg/Nm3
± 5 mg/Nm3
or 5 % rel.
1 mg/Nm3
45 s
NO2 - volumetric concentration of nitrogen dioxide.
electrochemical gas sensor
0...1000 ppm
1 ppm
± 5 ppm or
5 % rel.
1 ppm
45 s
NO2mg - mass concentration of nitrogen dioxide
calculated from volumetric concentration of NO2
0...
1 mg/Nm3
± 10 mg/Nm3
or 5 % rel.
2 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
± 10 mg/Nm3
or 5 % rel.
2 mg/Nm3
45 s
SO2 - volumetric concentration of sulfur dioxide.
electrochemical gas sensor
0..5000 ppm
1 ppm
± 5 ppm or
5 % rel.
1 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.
3 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.
3 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, T3 - 2 external inputs Thermocouple
0...1600°C
1°C
± 2 °C or
1. 5 % rel.
1 °C
10 s
T2, T4 - 2 external inputs Thermistor
-20...100°C
1°C
± 2 °C or
1. 5 % rel.
1 °C
10 s
Other measured values
U/I1, U/I2 - 2 external voltage/current inputs A/D converter
-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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