News Products About us Downloads Contact Language
Worldwide Competence
Products >> Gas Analysers >> Portable Analysers >> GA-21 Bio plus
portable landfill gas analyser GA-21Bio plus

Portable landfill analyser using electrochemical and IR gas sensors.
The gas analyser GA-21Bio plus  is designed for use in waste plants where it is necessary to measure the gases produced and the emissions from a connected power or heat generation station. This is now possible with a single instrument thanks to the use of the most modern technology. Like all our instruments, the GA-21Bio plus is manufactured to give a long working life.
Using the optional dryer it is possible to carry out longer term measurements. Three extra analogue inputs allow the simultaneous measurement of a voltage or current signal and a temperature. This makes it ideally suited for measurements on district heating plants. Manufactured with EN50379 in mind.
Pictures
Product info
Manual-1 (656 kB)
Manual-2 (656 kB)
Standard configuration
  • Measurement of gas concentrations
    • Gas concentrations measured with NDIR sensors: CO2, CH4
    • Gas concentrations measured with electrochemical sensors: O2, CO
    • Toxic gas concentrations measured with electrochemical sensors: CO, NO, NO2, SO2, H2S. Please ask for quote for other gases.
  • Measurement of other parameters
    • Measurement of gas and ambient temperatures
    • Pressure, draft and differential pressure measurements with 1 Pa resolution
    • Soot test according to Bacharach with a pump flow of 1.62 l/min
    • Three analogue inputs (1 current/voltage, 1 thermocouple, 1 thermistor)
  • Calculation
    • Calculation of absolute and relative mass concentrations & relative emissions
    • Calculation of all relevant combustion parameters
  • Processing and presentation of measured data
    • All results shown on display
    • Averaging of all measured values. Averaging time: 10 sec - 60min
    • Graphical presentation of all measured values as diagram (option)
    • Memory capacity for 1024 sets of data, organised into 10 data banks
    • Up to 9 separate items in a data set
    • User definition of the 9 items
    • Memory capacity for 30 reports
    • Data logger function for the analogue inputs
    • All measured values, stored values or displays can be printed on the internal printer.
    • Powerful PC program for analyser settings and data communication
  • Software-Eigenschaften
    • International compatibility (language, date format etc.)
    • Password protection for settings
    • Automatic zeroing when the analyser is switched on
    • Calibration of O2/CO2 during use
    • All parameters programmable
    • List of 22 common fuels
    • 10 further freely programmable fuels
    • Permanent automatic check of the instrument with acoustic warning and full information in the "control list"
    • Compensation of cross sensitivity and temperature drift of gas sensors
  • Hardware capabilities
    • Electronic regulation of the pump flow rate
    • Integrated clock/calendar
    • Internal 57 mm dot-matrix printer
    • Power from rechargeable battery or mains
    • Big (70 x 60 mm) LCD display with backlighting (Graphics or 11 x 21 characters)
    • Gas probe with thermocouple and condensate trap
    • Power for heated probe holder during mains operation
    • RS-232C interface and multifunctional PC program
Optional accessories
    • Mini Peltier gas dryer with peristaltic pump
    • External ambient temperature sensor
Technical data
    • Size of case W x H x D: 460 x 160 x 170 mm
    • Weight w/o probe: 6.2 kg
    • Display size: Graphical - LCD, with backlighting and variable contrast, 128 x 112 pixels, 75 x 64 mm
    • Printer: high-speed dot matrix printer with graphics capability for 57 mm normal paper
    • Data memory: Memory for 30 reports and 10 banks containg a total of 1024 sets of data 
    • CO - measurement channel: Separate from the other gas channels. If the freely programmable maximum is exceeded then the sensor is purged with air, without interrupting the other measurements
    • Interface: RS232C
    • Power supply: 110 or 230 VAC 50 ÷ 60 Hz
    • Charging time: Lead-acid battery 12 V/2.2 Ah, charging time 10 h, working time from battery approx. 6 h (w/o dryer))
    • Gas pump: Membrane pump, electronically regulated at 90l/h
    • Probe: Heated for soot test
    • Probe length: 300 mm (other options available)
    • Length of gas line: 3 m
    • Gas filter: In line filter 20 µm
    • Operating temperature: 10 °C ÷ 50°C
    • Storage temperature: -20 °C ÷ +55 °C

Parameter
Method
Indication range
Display resolution
Accuracy
Detection limit
Resp. time (t90)
Gases measured in standard configuration
O2 - oxygen, volumetric concentration electrochemical gas sensor
0..25 %
0.01 %
0.2 %
0.2 %
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
CO2 - carbon dioxide volumetric concentration IR sensor
0...100 %
0.1 %
 +/- 3 % rel., or 0.5 % abs.
0.2 %
45 s
CH4 - Methane, volumetric concentration IR sensor
0...100 %
0.1 %
 +/- 3 % rel., or 0.5 % abs.
0.2 %
45 s
Gases measured with optional electrochemical sensors
H2S - volumetric concentration of hydrogen sulphide electrochemical gas sensor
0..1000 ppm
1 ppm
±5 ppm or 5 % rel.
5 ppm
45 s
H2Smg - mass concentration of hydrogen sulphide calculated from volumetric concentration of H2S
0...
1 mg/Nm3
±10 mg/Nm3 or 5 % rel.
10 mg/Nm3
45 s
H2Srel - mass concentration of hydrogen sulphide relative to O2 calculated from volumetric concentration of H2S and O2
0...
1 mg/Nm3
±10 mg/Nm3 or 5 % rel.
10 mg/Nm3
45 s
NO / NOx - volumetric concentration of nitrogen oxides. electrochemical gas sensor
0..5000 ppm
1 ppm
±5 ppm or 5 % rel.
5 ppm
45 s
NOmg/NOxmg - mass concentration of nitrogen oxides calculated from volumetric concentration of NO
0...
1 mg/Nm3
±15 mg/Nm3 or 5 % rel.
15 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
±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 sulphur dioxide. electrochemical gas sensor
0..5000 ppm
1 ppm
±5 ppm or 5 % rel.
5 ppm
45 s
SO2mg - mass concentration of sulphur 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 sulphur 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
Other measured values
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
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
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
Pressure DMS bridge
-25 hPa ...
+25 hPa
0.1 Pa
± 2 Pa or
5 % rel.
1 Pa
10 s
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
a
Copyright © 2008  madur. All rights reserved.