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GA-12plus
Handheld analyzer using electrochemical sensors.
4 gas analyzer in handheld format. Shown is graphic display.
A further development from the tried and tested GA-12 hand-held analyzer. This new analyzer is equipped with the following extra features:
  • Can be fitted with up to 4 electrochemical sensors.
  • Suitable for a soot test using electronically controlled gas volume.
  • Fitted with a powerful Li ion rechargeable battery.
  • Big memory capable of storing 32 measurement reports.

An attractive alternative to other, bigger analyzers.
Standard configuration
  • Measurement of gas concentrations
    • Standard version with two gas sensors: O2, CO
    • Two further optional sensors from: NO, NO2, SO2
    • CO ambient measurement with a resolution of 0.1 ppm
  • Measurement of other parameters
    • Measurement of gas and ambient temperatures
    • Pressure, draft and differential pressure measurements with 0.1 Pa resolution
    • Flow velocity measurement
    • Relative humidity measurement probe - optional
    • Soot/smoke test according to the Bacharach method - electronically regulated to 1.63 l
  • Calculation
    • CO2 concentration
    • Calcualtion of all relevant combustion parameters
  • Processing and presentation of measuring data
    • All results shown on display
    • Averaging of all measured values. Averaging time: 2, 10, 20, 30, 60, 120, 180 seconds
    • Graphical presentation of all measured values as diagram
    • Storage for 32 measurements - "measure now, print later"
    • Powerful PC program for analyzer settings and data communication
  • Software capabilities
    • Automatic zeroing when the analyzer is switched on
    • All settings for the analyzer carried out with PC programm
    • List of 6 common fuels (from DIN)
    • 4 further freely programmable fuels
    • Permanent automatic check of the instruemnt with acoustic warning and full information in the "control list"
  • Hardware capabilities
    • Integrated clock/calendar
    • IR interface for external printer
    • Flexible 24 hours operating time from one charge of batteries
    • Full graphic display LCD 66 x 36 mm
    • Gas probe with thermocouple and condensate trap
    • Power supply for heated probe holder (when powered from the mains)
    • RS-232C interface and multifunctional PC program
    • Updateable FLASH ROM program memory
    • Simple, intuitive operation, like a cell phone
Pictures
Product info
Brochure (52 kB)
Manual (435 kB)
Control software (18.7 MB)
Technical data
  • Size: 245 x 90/128 x 60 mm
  • Weight w/o probe: approx. 800 g
  • heated, with condensate trap and filter
  • Probe length 150 mm
  • Length of gas line 2 m
  • In line filter 20 µm
  • Display 38x66 mm
  • Power supply: mains adapter or internal rechargeable battery (24 hours)
  • External power supply 18 VDC
  • Membrane pump
  • Operating temperature 10 °C ÷ 50°C
  • Storage temperature -20 °C ÷ +55 °C
Optional accessories
  • leather-look case for storage and rubber boot for protection of the instrument
  • Magnetic plate to attach the instrument to steel surfaces
  • External thermal printer with wireless IR communication
  • Optional differential pressure measurement
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 ±0.5 ppm
or 5 % rel.		 0.1 ppm 45 s
CO - carbon monoxide, volumetric concentration
electrochemical gas sensor
 0..20000 ppm 0.1 or 1 ppm
set by user		 ±5 ppm
or 5 % rel.		 1 ppm 45 s
COmg - carbon monoxide, mass concentration
calculated from volumetric concentration of CO
 0... 1 mg/Nm3 ±5 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 ±5 mg/Nm3
or 5 % rel.		 1 mg/Nm3 45 s
Gases measured with optional electrochemical sensors
NO - volumetric concentration of nitrogen oxides
electrochemical gas sensor
 0..1000 ppm 0.1 or 1 ppm
set by user		 ±5 ppm
or 5 % rel.		 1 ppm 45 s
NOmg - mass concentration of nitrogen oxides
calculated from volumetric concentration of NO
 0... 1 mg/Nm3 ±10 mg/Nm3
or 5 % rel.		 2 mg/Nm3 45 s
NOrell - mass concentration of nitrogen oxides relative to O2
calculated from volumetric concentration of NO and O2
 0... 1 mg/Nm3 ±10 mg/Nm3
or 5 % rel.		 2 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 sulphur dioxide
electrochemical gas sensor
0..5000 ppm
1 ppm
±5 ppm
or 5 % rel.
1 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.
3 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.
3 mg/Nm3
45 s
Temperature measurements
Tgas - flue gas temperature
Thermocouple
 -10..1000°C 0.1 or 1°C
set by user		 ±2°C
or 1.5 % rel.		 1°C 30 s
Tamb - ambient temperature
Thermistor
-10..100°C 0.1 or 1°C
set by user		 ± 1°C 1°C 30 s
Calculated parameters
TI (CO/CO2-Toxic Index)
calculated
 0...0.01 0.0001 0.0001
Lambda - excess air number
calculated
 1..10 0.01 0.01
qA - combustion losses
calculated
 0..100 % 0.1 % 0.1 %
Eta - efficiency
calculated
 0..120 % 0.1 % 0.1 %
Other measured values
Pressure
DMS bridge
 -25 hPa ...
+25 hPa		 0.1 or 1 Pa
set by user		 ±2 Pa
or 5 % rel.		 0.1 Pa 10 s
Diff. Pressure
DMS bridge
 -25 hPa ...
+25 hPa		 0.1 or 1 Pa
set by user		 ±2 Pa
or 1 % rel.		 0.1 Pa 10 s
V - flow velocity
Pitot tube
 1..30 m/s 0.1 m/s 0.5 m/s or
2 % rel.		 1 m/s 10 s
rH -relative humidity
capacitive sensor
 5..95 % 0.01 % 2 % rH
or 2 % rel.		 5 % 10 s
A
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