The GASERA ONE FORMALDEHYDE is designed for reliable, continuous measurement of formaldehyde (HCHO or CH₂O) — a colourless, pungent gas classified as a carcinogen. Exposure above 0.1 ppm can cause acute health effects including sore throat, skin irritation, nausea, and eye irritation. Prolonged moderate exposure has been linked to severe health impacts.
The instrument uses cantilever enhanced photoacoustic spectroscopy (CEPAS) combined with a quantum cascade laser (QCL) operating at the Mid-IR fundamental absorption band of HCHO.
This approach achieves ppt-level sensitivity with outstanding selectivity — the instrument has been validated as highly selective against other carbonyl compounds and VOCs, including in comparison to conventional formaldehyde monitors such as the Formaldemeter htV-M, where GASERA ONE FORMALDEHYDE demonstrated response times and detection limits lower by an order of magnitude.
The instrument has been used in published peer-reviewed research in hospital pathology laboratories and operating rooms to demonstrate the effectiveness of safety interventions in reducing formaldehyde exposure over time.
Typical applications include: fence-line monitoring, indoor air quality and occupational safety monitoring, biogas plants, new building emissions assessment, emissions from wood products and furniture, and traffic emissions monitoring.
Data sheets and specifications are subject to change, and Cura Terrae Air cannot be held responsible for inaccuracies in manufacturer-issued data sheets. To confirm specifications and obtain the latest issue of the data sheet, please contact us.
Datasheet
Technology
- Principle of operation: photoacoustic infrared spectroscopy
- Patented ultra-sensitive optical microphone based on MEMS cantilever sensor coupled with a laser interferometer to measure microscopic movement of the cantilever
- Light source configuration: Distributed Feedback Quantum Cascade Laser
General
- 19″ 3U (unit) housing for both table top and rack mount operation
- Dimensions: 48.4 cm W x 13.9 cm H x 44 cm D (19.1 in W x 5.5 in H x 17.3 in D)
- Weight: approx 13 kg
- Built-in computer with a 7″ WSVGA display
- Data storage capacity sufficient for at least 1 year of continuous monitoring with the shortest sampling interval
- Total internal gas volume: 30 ml
- Electrical connections: Input voltage 90–264 Vac, 47–63 Hz; Input power 75 W max.
- Interface: Ethernet, USB and optionally Serial over USB; current message or voltage message; supports MODBUS and AK-protocol
Standards
- Complies with the Low Voltage Directive 2014/35/EU, EMC Directive 2004/108/EC and ROHS 2 directive 2011/65/EU
Environment
- Operational temperature range: 0°C to +40°C
- Humidity: non-condensing
- Pressure range: 750 mbar to 1050 mbar
- Dust/water resistance: IP20 (IEC 529)
- Storage temperature range: -20°C to +60°C
- Sample gas temperature: 0 to +49°C
- Sample gas humidity: non-condensing, maximum relative humidity 80% for temperatures up to 35°C, decreasing linearly to 35% relative humidity at 49°C
- Sample gas pressure: 750 mbar to 1050 mbar
- Gas flow: approx 0.6 litres/minute during gas exchange
- Particulates: < 1 µm
Measurement Specifications
- Response time: 10 seconds to few minutes depending on user configurable channel integration time (C.I.T.) and gas exchange routine
- Detection limit: below 1 ppb
- Dynamic range: over 5 orders of magnitude (100,000× the detection limit)
- Repeatability: less than 1% of measured value in operational conditions at the calibration concentration
- Accuracy: better than 5% at the calibration concentration; limited by calibration gas accuracy
- Temperature stability: ambient temperature change within the operational range will not cause drift
- Pressure stability: sample gas pressure change within the pressure range will not cause drift
