NDIR Multi-Gas Sensor for CEMS CO2 20 Vol.-% // CO 5 Vol.-%

Product catalog summary

Product Overview: The SILAREX NDIR Multi-Gas Sensor by smartGAS Mikrosensorik GmbH is designed for Continuous Emission Monitoring Systems (CEMS), capable of measuring CO2 up to 20 Vol.-% and CO up to 5 Vol.-%. It features dual active measurement channels, onboard cross and pressure compensation, and supports Modbus ASCII/RTU communication.

Applications: The sensor is suitable for emission monitoring, biogas analysis, and process measurement.

Accessories: Available accessories include insulation housing, gas cooler, particle filter, gas pump, and mounting equipment. The sensor is available in 2-channel and 3-channel designs.

Specifications: The sensor operates on the Non-Dispersive Infra-Red (NDIR) principle with a dual wavelength. It requires a gas flow rate of 0.1 to 1.0 l/min and has mounting dimensions of 336 mm x 40 mm x 55 mm. The warm-up time is less than 2 minutes for startup and less than 30 minutes for full specification.

Measuring Response: The response time varies from less than 4 seconds (fast) to less than 60 seconds (slow) at a flow rate of 0.7 l/min. The digital resolution is 0.01 Vol.-% for CO2 and 1 ppm for CO, with a detection limit of 0.04 Vol.-% for CO2 and 0.006 Vol.-% for CO in fast mode.

Performance: The sensor exhibits repeatability of ≤ ± 0.07 Vol.-% for CO2 and ≤ ± 0.51 Vol.-% for CO. Linearity error is ≤ ± 0.2 Vol.-% for CO2 and ≤ ± 0.05 Vol.-% for CO. Long-term stability after 1000 hours is ≤ ± 0.05 Vol.-% for zero and ≤ ± 0.20 Vol.-% for span for CO2.

Environmental Conditions: The sensor operates at ambient temperatures between +10 °C and +40 °C, with storage temperatures ranging from -20 °C to +60 °C. It can handle air pressures from 800 to 1150 hPa and humidity levels from 0 to 95% relative humidity (non-condensing).

Electrical Specifications: The sensor requires a 24 V DC supply voltage with an average power consumption of less than 6 W when the heater is on. It supports digital output via Modbus ASCII/RTU.

Additional Information: The document emphasizes the need for recalibration at first initiation and recommends recurring recalibration cycles. It also notes that specifications are subject to change and advises consulting smartGAS sales for specific requirements.

Catalog excerpts

NDIR Multi-Gas Sensor for CEMS CO2 20 Vol.-% // CO 5 Vol.-%-1

CEMS Dual Gas NDIR sensor 2 active measurement channels Ready to use calibrated On board cross compensation On board pressure compensation Modbus ASCII/RTU, autobaud, autoframe Status indicated by LED NDIR Multi-Gas Sensor for CEMS CO2 20 Vol.-% // CO 5 Vol.-% smartGAS item number: SX-200012-00000 Application Examples Emission monitoring CEMS Biogas Process measurement Accessories Insulation housing Gas cooler Particle filter Gas pump Mounting equipment smartGAS Mikrosensorik GmbH I Huenderstr. 1 I 74080 Heilbronn I Germany T +49 7131 797553-0 I F +49 7131 797553-10 I [email protected] I www.smartgas.eu Available design in support Mechanical Installation Data communication Gas pre-treatment

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NDIR Multi-Gas Sensor for CEMS CO2 20 Vol.-% // CO 5 Vol.-%-2

SILAREX I CO2 // CO I SX-200012-00000 General features Measurement principle: Non Dispersive Infra-Red (NDIR), dual wavelength Target gas: Measurement range: by flow (nearly atmospheric pressure) Flow rate: Mounting dimensions: Warm-up time: < 2 minutes (start up time) < 30 minutes (full specification) Measuring response* Response time (t90) @ 0.7 l / min: < 4 s (fast), < 8 s (medium), < 60 s (slow) Digital resolution: Detection limit (3 σ) max.: in fast / medium / slow mode: Repeatability: Linearity error (straight line deviation): Long term stability (zero): after 1000 h operating time Long...

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NDIR Multi-Gas Sensor for CEMS CO2 20 Vol.-% // CO 5 Vol.-%-3

Climatic conditions Sensor heating temperature Operating ambient temperature: appr. + 10 … + 40 °C (thermal isolation required) Storage temperature: Ambient humidity: Typical values related to 1013 hPa, Ta = 22 °C, flow = 0.7 l / min for dry (not condensing) and clean sample gas. Stated values exclude calibration gas tolerance. All rights reserved. Any logos and/or product names are trademarks of smartGAS. The reproduction, transfer, distribution or storage of information contained in this brochure in any form without the prior written consent of smartGAS is strictly prohibited. All specifications...

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