Flow measurement of Biogas has faced huge problems due to high humidity, condensation, particles, varying compositions, aggressive and explosive media and marginally low air flow.

The Hoentzsch Vortex VA Flowmeter offers an accurate measurement solution for the Biogas environment:

• starting from very low gas flow velocity (0.4 m/s)
• measuring dynamics (turndown) 1:100
• largely insensitive to condensation and particle deposits
• almost no cleaning and servicing necessary
• accurate measurement with variable gas compositions
• low pressure drop, no moving parts
• SIL and  Ex-proof certifications available

Diaphragm pressure gauges with open measuring flange are especially well suited in rough conditions with viscous, crystallizing and mediums that carry solid particles. Diaphragm pressure gauges can be easily protected against overpressure.Schmierer Germany has introduced a specialized PTFE Xylan coated Diaphragm Seals for long-term protection against corrosion and chemicals in the Mineral Oil and Chemical Sector.

• Gas and liquid flow - VA float principle
  
• stainless steel VA w. PTFE lining or fully PP/PVC
  
• Low Pressure Loss
  
• Indication via Magnetic Coupling
  
• Individually calibrated - medium specific scale
  
• Accuracy: ±1.6%

The Ensim ELF Rotary Paddle level switch series for level control in solid particulate material silos and tanks.With different types of probes and paddle forms,a full and empty signal can be received in a secure level control. The probe can be connected horizontally or vertically. Ex proof models available.

Intra Automation introduces a Pitot Tube flow measurement system for easy outdoor installation with a protective cover of liquids, gas, fluegas and steam:

• easy outdoor installation (one installation point) 
  
• ambient temperature range -50 to +80 °C 
  
• easy electrical connection 
  
• optional as a mass flow meter 
  
• cost reducing 
  
• high operational reliability 
  
• reduce of emissions