One off-gas analyzer for various applications


The maintenance free variable off-gas sensor adapting to your needs

Technical Short Facts

  • 3 cartridge plug-in positions
    • 1 for pressure/humidity
    • 2 for two various gas cartridges
  • variable connections and data output options
  • light but robust plastic housing
  • Cartridges for CO2, O2, CH4 and H2 available now

BlueVary consists of a basis station with three plug-in positions for gas sensor cartridges. Two different gases can be measured at once. The third plug-in position holds a pressure or pressure/humidity sensor cartridge. Gas sensor cartridges are selectable according to your application and can be changed easily as required.
BlueVary increases your efficiency

  • one device to cover different measurement tasks  ➔ choose a suitable gas sensor cartridge for your application
  • maintenance free ➔ no need for offsite annual maintenance - minimizes your downtime
  • auto compensated pressure and/or humidity  ➔ no gas cooler, pumps, valves or other gas pretreatment needed
  • connectable to any hose/tube or pipe  ➔ use it on your fermenter of choice
  • integrated status display  ➔ see all sensor information and measurement data at a glance 

Simplify process optimization

  • continuous online fermentation monitoring for cell culture, microbial, algae, fungi or biogas processes
  • identify metabolic phenomena and obtain vital process parameters
  • applicable from lab to industrial scale


Comparison BlueInOne vs. BlueVary

 BlueInOne BlueVary
housingstainless steelPolycarbonate
annual maintenance neededyesno
gases to be measuredcombination O2, CO2various combinations
O2, CO2, H2, EtOH,CH4
different combinations possible
for flexible usage
integrated display to see
measurement and sensor data at a glance
various connections to
connect to every fermenter
application in projects with
different measurement ranges
calibration has to be changed
(if possible)
choose another cartridge
one-point calibration to
ensure higher accuracy
possible to combine with
BlueVis software for higher automation grade
suitable for biogas applicationsnoyes

It doesn´t have to be either or but can also be complementary. Read here why and how to benefit from continuous off gas measurement made by BlueSens although you already might have a mass spec.

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