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Vaisala HPP270 Hydrogen Peroxide Sensors

Vaisala HPP270 probes are designed for demanding hydrogen peroxide bio-decontamination where repeatable, stable, and accurate measurement is essential. Vaisala HPP270 series probes are suitable for a variety of applications such as isolator, material transfer hatch, and room bio-decontamination.

The basic probe option, Vaisala HPP271 measures only H2O2 vapor concentration. The advanced option, Vaisala HPP272, provides all parameters required to measure during the bio-decontamination processes: hydrogen peroxide vapor, temperature, and humidity as relative saturation and relative humidity. Now also dew point and vapor pressure measurements are possible.  Dehumidification is an extremely important part of the H202 process – the graph below shows a typical example of the efficiency of a dehumidified vs non-dehumidified process.

Typical H202 process caused by humidity


Intelligent measurement technology including the chemical purge function helps to maintain accuracy between calibrations in challenging H2O2 environments. The purging process involves rapid heating of the sensor to remove possible contamination. The PEROXCAP sensor used in the Vaisala HPP270 series probes is warmed, which prevents condensation from forming on the sensor. This provides reliable measurement even in condensing conditions.

The probes can be used with the optional Vaisala Indigo transmitters or as standalone probes. For easy-to-use access to configuration, calibration, and adjustment the probe can be connected to Vaisala Insight PC software.


Vaisala HPP270 Series Features

  • Superior long-term stability and repeatability
  • Typical Measurement range 0…2000ppm H202 (plus RH etc via HPP272)
  • Temperature measurement range +5…+50degC
  • Analogue outputs with M12 supply and signal connector
  • Traceable calibration certificate included as standard
    • 2 points for H2O2, 3 points for humidity, 1 point for temperature
  • Corrosion-resistant stainless steel housing (IP65)
  • Compatible with Indigo Output Transmitters when preferred


Vaisala HPP270 Product Video


Fluidic are a recognised partner of Vaisala for Scotland and the North of England.  Our instrumentation engineers are product trained and able to help with instrument selection within the full range of Vaisala Relative Humidity, Temperature and barometric pressure products for a number of pharmaceutical applications.  Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).


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