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Ambisense Launches MultifluX™

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AmbiSense Launches MultifluX™

AmbiSense launched the world’s first online, continuous gas and flow monitoring device GasfluX™ in 2016. Now the instrument of choice for ground gas monitoring applications, AmbiSense is very proud to announce the release of the multi-level MultifluX™ module.

What is MultifluX™?

MultifluX™ is a multiplexor extension accessory for GasfluX™ designed to enable multiple discreet depths, zones & locations to be measured with a single device with all data available online, in real-time.


  1. Rationalise/remove gas protection measures by identifying whether surface migration is from a gas source at depth or at what depth lateral migration is occurring.
  2. Reduces cost by monitoring multiple discreet depths, zones or adjacent locations through one central analyser.
  3. Improve quality & regulatory compliance by maximising the data density from high-risk boreholes

Monitoring Applications

MultifluX™ has been carefully designed to have many different applications including:

  • Multi-Level Wells (such as CMT);
  • Nested Wells;
  • Clustered Wells;
  • Under-Floor Voids

What can I measure?

The MultifluX™ module connects directly to GasfluX™ and can measure the same parameters (including emission flow-rate from multiple locations). MultifluX™ is also equipped with a 4-20mA and a Modbus connector to enable the integration of numerous other types of environmental instrumentation such as water level and water quality instrumentation.

With MultifluX™ you can monitor multiple depths & locations with a single device & access all of your data online in real-time.

Real-time, multi-level data from the MultifluX™ device

Is it compatible with my Existing GasfluX™ Devices?

The MultifluX™ connects to the GasfluX™ device via the supplied I2C connector. These are now shipped as standard on the GasfluX™ device. If you are one of the earlier GasfluX customers, your device may not have an I2C connector fitted. If so we are happy to offer you a FREE upgrade upon ordering a MultifluX™ device. Please contact us to find out if your device is compatible and to arrange the upgrade.


Technical Specification

GasCH4, CO2, O2,  tVOCs, H2S, CO, NH3
PhysicalFlow-rate, pressure, temperature, humiditySynchronised weather data
Other Inputs4 – 20 mAModBus
Contextual sourcesSynchronised, localised weather dataBGS data reference
PowerInternal battery w/ solar charging
Communications2G, 3G, 4G (with back-up internal memory)
AccessoriesSecure mounting pedestalBattery boost pack


How can I order one?

Please contact us or your preferred distribution partner to obtain pricing & detailed technical information.

WOW! This article was amazing - I want to read the next one as soon as it's written

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Steve Wilson

Steve specialises in the investigation, assessment and mitigation of ground gas and hydrocarbon vapours and is an Accredited Risk Assessor (ASoBRA) for permanent gases and vapour intrusion (he also acts as a scrutineer for the scheme) . He has written several key technical papers on this subject and has contributed to recent CIRIA, British Standards and Chartered Institute of Environmental Health guidance on ground gas assessment and mitigation. He was a member of the drafting committee for BS8567, Guidance on sampling of ground gas and the 2015 update of BS8485 on gas protection design (with 2019 amendment). He advises local authorities in the UK on planning, Part IIA and other issues relating to ground and landfill gas. He has completed several Part IIa risk assessments in relation to the risk of gas migration from landfill sites towards existing buildings, including options appraisals and mitigation design. He has designed numerous vent trench and barrier systems to prevent ground gas migration. He has recently completed work into the effects of flooding on landfill gas risk and looking at landfill permit surrender guidance in the UK. Steve has acted as an expert witness in court cases involving landfill or ground gas migration in the UK and Australia and for a site in Bangladesh where a gas exploration well had blown out. He has been involved in the design of gas and VOC mitigation measures for sites around the world affected by gas from various sources including mine workings. This has included retrofit schemes for existing buildings affected by gas ingress. He also provides expert support on ground gas to several Licensed or Accredited Contaminated Sites Auditors in Australia.