Aspirated Systems for one or two measured gases
Sampling of measured gas and transmitter combined in one wall mounted housing.
Particularly suitable for biogas application

Features

• Transmitter:
  
      · Number: 1 (AS-1, AS-1 Biogas) or 2 (AS-2)
      · Types freely selectable (not included in scope of delivery)
• Control Unit:
      · Externally, e. g. by ExTox Control Unit
• Sampling of Gas:
  
      · Gas suction pump
      · Electrical flow monitoring by means of pressure difference measurement: in case of under-scale of the minimum flow,fault indication is issued by breaking the transmitter output signal (4…20 mA)
  

      · 2 screw-in connections (4/6 mm) for inlet and outlet of measured gas at the bottom of the housing

      · 1 screw-in connections (4/6 mm) for condensate outlet at the bottom of the housing (AS-1 Biogas only)
• Conditioning of Measured Gas:
  
      · Condensate trap with peristaltic pump 340 ml/h (AS-1 Biogas only)
  

      · Flame Arrestor Ex IIG IIB3 in the gas inlet (AS-1 Biogas only)
• Hosing::
  
      · PE/PP

Mechanical Features

Optionen

• ExTox-Transmitter:
      · Depending on type of measured component a suitable transmitter can be chosen out of the ExTox programme.
• ExTox-Control Unit:
      · The measuring signal supplied by the Aspirated System can be evaluated by every ExTox-Control Unit.
• Flame Arrestor:IIG IIB3 (Art.-No. 940250) or  IIG IIC, e. g. for hydrogen, (Art.-No. 940251):
  When sampling in hazardous areas the gas flow inside the Aspirated System is decoupled of the monitored process as far as the danger of explosion is concerned. The flame arrestor is connected to the measured gas inlet. When returning the measured gas into the process (not recommended due to due to technical measurement reasons) another flame arrestor at the measured gas outlet is necessary. Protection class of the flame arrestor shall be adapted to the measured gas.
• High performance gas suction pump:
      · Application in case of far distances to the suction point or high pressure difference relative to ambient.
• Condensate trap (great) incl. hose pump 800 ml/h (Art.-No. 940255):
      · Used for applications where a great amount of condensate will be formed in the measuring pipe.
• Suction Filter, plastic (Art.-No. 940618):
      · Device for gas sampling from the ambient air with a plastic sinter-element for filtering the sampled gas. Mounting at the wall or ceiling. Orientation of sinter-element and hose connector can be chosen variable.