Infrared CO2 sensor MicroSENS 180-HS-PFAS-free

NDIRdigitalRS-232

Description
The MicroSENS 180-HS-PFAS-FREE 0–20% CO₂ gas sensor is an NDIR diffusion sensor designed for CO₂ monitoring and control in cell incubators. The sensor head is placed inside the incubation chamber to measure CO₂ concentration directly in the cell culture environment using infrared absorption for reliable and precise determination of CO₂ concentration.

Key features

• NDIR CO₂ sensor (IR dual-beam technology)
• PFAS-free design (no intentionally added PFAS in wetted/gas-exposed sensor head materials, including filter concept)
• Temperature and pressure compensation
• Humidity compensation
• Heat sterilizable at typ. 180 °C (short-term up to max. 190 °C)
• Long service life; designed for high sterilization cycle counts
• Digital (RS232) and analogue (4–20 mA) interfaces

Performance and integration
The sensor uses a dual-beam NDIR method with low drift and low susceptibility to interference, delivering high reliability and long lifetime. Heat sterilization of the sensor head (typ. 180 °C, short-term up to 190 °C) reduces cross-contamination risk and simplifies decontamination. Temperature, pressure and humidity compensation ensure stable readings in humid incubator atmospheres. A 15-point calibration matrix (five concentrations at three temperatures) improves linearity over the full 0–20% range. Digital and analogue outputs and a feed-through mounting concept facilitate OEM integration with incubator control electronics.

Technical specifications

• Minimum measuring range: 0 Vol.-%
• Maximum measuring range: 20 Vol.-%
• Gas supply: Diffusion
• Warm-up time at startup: < 10 s
• Heating time for full specifications: < 5 min
• IP protection class (default): IP 44
• Repeatability: < 0.005 % FS
• Accuracy: ± (2 % of reading + 0.2 Vol.-%)
• Response time with filter: < 100 s
• Digital resolution: 0.001 Vol.-%
• Temperature influence: 0.155 % FS / 10 K
• Pressure influence: 0.004 % FS / 10 hPa
• Long-term stability: ≤ ± 0.2 Vol.-% at 5 Vol.-% / year
• Operating voltage (analog): 15 - 24 V DC
• Operating voltage (digital): 12 - 24 V DC
• Nominal power consumption: < 2 W
• Digital output signal: RS232
• Analogue output signal: Current 4 - 20 mA
• Minimum operating temperature: 0 °C
• Maximum operating temperature: 60 °C
• Minimum storage temperature: -20 °C
• Maximum storage temperature: 85 °C
• Maximum sterilization temperature: 190 °C
• Environmental humidity: 0 ... 95 % relative humidity (non condensing)
• Minimum air pressure: 500 hPa
• Maximum air pressure: 1,200 hPa
• Measuring gas: carbon dioxide