Vaisala HPP270 Series Vaporized Hydrogen Peroxide Probes

Vaisala HPP270 Series Vaporized Hydrogen Peroxide Probes

The Vaisala HPP270 Series provides stable, repeatable measurement for demanding vaporized hydrogen peroxide bio-decontamination processes.

  • HPP271 measures vaporized H₂O₂ concentration
  • HPP272 adds relative saturation, relative humidity and temperature
  • H₂O₂ measurement range from 0 to 2000 ppm
  • Accuracy of ±10 ppm or 5% of reading, whichever is greater
  • Two 4–20 mA outputs or RS-485 with Modbus RTU
  • IP65 stainless-steel construction with Vaisala PEROXCAP® technology
  • Compatible with Vaisala Indigo transmitters and Indigo80

Measurement for Vaporized Hydrogen Peroxide Bio-Decontamination

The Vaisala HPP270 Series is designed for vaporized hydrogen peroxide processes where stable measurements are needed to develop, control and document a bio-decontamination cycle. Typical applications include isolators, material-transfer hatches and room bio-decontamination.

Both models measure H₂O₂ vapour concentration using Vaisala PEROXCAP® technology. Select HPP271 when H₂O₂ concentration is the required measurement. Select HPP272 when the process also needs relative saturation, relative humidity, temperature and calculated moisture parameters.

Important: relative humidity alone does not describe condensation risk in a vaporized H₂O₂ process. HPP272 also calculates relative saturation, accounting for the combined water-vapour and hydrogen-peroxide-vapour mixture.

HPP271 or HPP272?

Selection pointHPP271HPP272
Main purpose Vaporized H₂O₂ concentration measurement Multi-parameter vaporized H₂O₂ process measurement
H₂O₂ concentration Yes Yes
Relative saturation No Yes
Relative humidity No Yes
Temperature No separate RTD probe Yes, with separate Pt1000 RTD temperature probe
Other parameters H₂O ppm by volume and dew-point temperature Absolute H₂O₂ and H₂O, dew point, vapour pressures and saturation-pressure calculations
Best starting point Equipment requiring a direct H₂O₂ ppm signal Cycle development, control and condensation-risk assessment

H₂O₂ Measurement Performance

SpecificationHPP271 and HPP272
Sensor Vaisala PEROXCAP®
H₂O₂ measurement range 0 to 2000 ppm
H₂O₂ measurement temperature +5 to +50 °C
Accuracy from +10 to +25 °C, 10 to 2000 ppm ±10 ppm or 5% of reading, whichever is greater
Repeatability up to 500 ppm at +25 °C ±10 ppm
Repeatability up to 1000 ppm at +25 °C ±15 ppm
Factory-calibration uncertainty at 500 ppm and +25 °C ±10 ppm
Response time 70 seconds, T63

Additional HPP272 Measurements

ParameterRange or performanceProcess value
Relative saturation 0 to 100 %RS; accuracy ±4 %RS at +25 °C Indicates saturation of the combined H₂O and H₂O₂ vapour mixture
Relative humidity 0 to 100 %RH; accuracy ±1 %RH at +25 °C, 0 ppm H₂O₂ and 0 to 90 %RH Quantifies water-vapour humidity
RH over full temperature and H₂O₂ range Accuracy ±2 %RH Supports measurement across the operating process envelope
Temperature Pt1000 RTD Class F0.1; accuracy ±0.2 °C Provides the temperature used with humidity and saturation calculations
Calculated parameters Absolute H₂O₂, absolute H₂O, dew point and vapour pressure Supports process development, control and reporting

Outputs and Mechanical Specifications

SpecificationHPP270 Series
Digital interface Non-isolated RS-485
Digital protocol Modbus RTU
Analogue outputs Two 4–20 mA, three-wire current outputs
Maximum analogue load 500 Ω
Digital-mode supply 15 to 30 V DC
Analogue-mode supply 15 to 25 V DC
Operating temperature 0 to +70 °C
Storage temperature −20 to +70 °C
Ambient pressure Normal atmospheric pressure
Protection IP65
Probe-body material AISI 316L stainless steel
Filter material Porous PTFE
Connector M12, 5-pin male

Choose the Connection Method

RequirementRecommended arrangementWhy it fits
Direct connection to a PLC Standalone HPP271 or HPP272 Use the two 4–20 mA outputs or Modbus RTU
Compact local display and relays HPP270 with Indigo200 Adds a local interface, configurable outputs and relay options according to transmitter model
Industrial transmitter platform HPP270 with Indigo300 Provides local display, power and system-integration functions for one smart probe
Flagship multi-probe installation HPP270 with Indigo500 Supports advanced display, outputs, relays and transmitter-level integration
Portable diagnostics and field work HPP270 with Indigo80 Displays and logs measurements from up to two compatible probes or transmitters
Product information Explore Vaisala Indigo200   Explore Vaisala Indigo300   Explore Vaisala Indigo500   Explore Vaisala Indigo80

Typical Bio-Decontamination Applications

ApplicationMeasurement objectiveSelection focus
Isolators Measure H₂O₂ concentration and process conditions within the enclosure Probe location, cable routing, exposure profile and cleanability
Material-transfer hatches Monitor repeatable exposure and aeration cycles Representative location, response time and system integration
Room bio-decontamination Measure H₂O₂ and moisture conditions across a larger space Number of points, room mixing, generator position and aeration verification
Cycle development Understand concentration, temperature and saturation throughout the cycle HPP272 multi-parameter measurement and data logging
Equipment integration Provide real-time measurement to control or automation equipment Analogue scaling, Modbus registers, alarm handling and validation records

Vaisala HPP270 Supplier and Technical Support in Malaysia

Seacom Process Instruments supplies and supports the Vaisala HPP271 and HPP272 vaporized hydrogen peroxide probes in Malaysia for isolators, material-transfer hatches, room bio-decontamination and other demanding pharmaceutical or life-science applications.

Our team can assist with model selection, monitoring-point review, transmitter pairing, analogue or Modbus integration, Indigo80 portable diagnostics, commissioning and calibration planning.

Planning an H₂O₂ measurement system? Send Seacom the chamber or room layout, H₂O₂ concentration profile, temperature range, required parameters, number of points, output signals and validation requirements. We will help check the suitable HPP270 and Indigo configuration.

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Specific References

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