Pre-Abatement (Inlet) H2S Monitoring

These systems have been designed for the continuous monitoring of Hydrogen Sulphide (H2S) levels within the Inlet duct before odour control equipment on Waste Water Treatment Works. Ranges can be calibrated anywhere in between 0—1000 ppm, but no lower than 0—5 ppm (H2S).

Features available

  • Sampling and conditioning equipment
  • Suitable for Zone 1 or Zone 2 classified inlet duct gas streams
  • Analogue 4–20 mA signal
  • Volt free contact for sample pump flow failure
  • Volt free contact for sensor pump flow failure
  • Text messaging fault conditions
  • Viewing window
  • Security key lockable cabinet versions
  • Frameworks for floor or wall mounting

Facilities available

  • Design
  • Manufacture
  • Installation
  • Delivery
  • Commissioning
  • Demonstration
  • Training
  • Servicing
  • Hire

System Specifications

  • System can be configured to operate from either 110V or 240V mains supply. Internal power supply used to drive 24V sensor cell.
  • Standard cabinet is supplied IP66 rated in GRP; cabinets with viewing window are also supplied in GRP and rated to IP56.
  • Single analogue 4–20 mA signal proportional to range.
  • Sequential sampling numerous points around the plant to a single system, subject to maximum sample line length of 100 metres.
  • Optional flow failure facility on sample pump (VFC).
  • Optional flow failure facility on sensor pump (VFC).
  • Optional text messaging of alarm and fault conditions – subject to suitable network coverage.
  • Optional security key lockable cabinet.
  • Hot dip galvanised frameworks for floor or wall mounting.
  • Dilution system option for high levels of gas.
  • Pumped system to counter the issues related with differential pressure systems caused by changes in flow and pressure.
  • Calibrated to H2S but is cross sensitive to other odours such as Mercaptans. Measurement should be used for trending information rather than to control process due to cross sensitivity to other gases.
  • Standard system to be serviced every 6 months. This may increase if our dilution system has been included.
  • Standard instrumentation cabinet 800 x 600 x 300mm.
  • Standard Hotbox dimensions 560 x 380 x 180mm.
  • Safety systems installed to meet HSE judgement on ATEX Directive for Zone 1 and Zone 2 gas stream applications.
  • Standard systems can be easily modified for multi gas applications or to meet specific site requirements as necessary.
  • Numerous ppm ranges available, bespoke calibration range to suit your application.

Tailor made quotations available upon request. Email your contact details to office@pollutionmonitors.co.uk and we will call you by return.

Download printed information document (pdf).