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Operating Principle of H2O2 Measurement (page 14)
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2.2 Basic Features and Options
• Vaisala PEROXCAP
â
H
2
O
2
measurement technology with excellent long-term stability.
• Vaporized H
2
O
2
measurement range 0 ... 2000 ppm.
• Relative saturation (RS) measurement range 0 ... 100 %RS.
• Relative humidity (RH) measurement range 0 … 100 %RH.
• Temperature (T) measurement range +5 ... +70 °C.
• Robust design allowing the probe to be installed directly in the process environment.
When powered on, the probe withstands H
2
O
2
and H
2
O condensation. The probe also
withstands nitrogen gas.
• Protective filter over the sensors designed to withstand high air flow rates and turbulence.
• Sensor heating to avoid condensation on the sensors.
• Chemical purge for optimized performance and lifetime.
• Pressure compensation for H
2
O
2
concentration (ppm), H
2
O concentration (ppm), and
relative saturation (%RS) measurement.
• Digital output: RS-485 interface for Modbus communication.
• Analog output: 2 x 4 ... 20 mA (default).
• Easy plug-in, plug-out.
• Can be used as a stand-alone probe or with Vaisala Indigo 200 series transmitters.
• Can be connected to Vaisala Insight software for configuration, diagnostics, and
temporary online monitoring.
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2.3 Safety
Ground the product and verify installation grounding periodically
to minimize shock hazard.
WARNING!
When returning a product for calibration or repair, make sure it
has not been exposed to dangerous contamination, and is safe to handle
without special precautions.
WARNING!
HPP272 User Guide
M211972EN-B
8