The Vaisala HPP270 Series provides stable, repeatable measurement for demanding vaporized hydrogen peroxide bio-decontamination processes.
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.
| Selection point | HPP271 | HPP272 |
|---|---|---|
| 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 |
| Specification | HPP271 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 |
| Parameter | Range or performance | Process 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 |
| Specification | HPP270 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 |
| Requirement | Recommended arrangement | Why 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 | |
| Application | Measurement objective | Selection 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 |
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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