Carbon dioxide analyzer Gasboard-9021

COCH4H2

Overview
Gasboard-9021 is an online tri-gas analyzer for simultaneous, real-time measurement of CO, CO2 and CH4 in heat-treatment furnace atmospheres. Based on temperature-controlled NDIR sensors, it delivers stable, low-drift measurements suitable for continuous monitoring and furnace atmosphere diagnostics. The analyzer supports carbon potential calculation and provides data for cross-validation with oxygen probe readings. CQI-9 compliance makes it suitable for automotive supply-chain atmosphere verification. An optional TCD module is available for H2 measurement when hydrogen-bearing gases are used.

Features

• Stable NDIR tri-gas detection with temperature-controlled sensors to minimize drift during long-term operation.
• CQI-9 compliance for atmosphere verification in heat-treatment process audits.
• Integrated sampling and conditioning system with modular design for simplified installation and maintenance.
• Optional H2 measurement via TCD module with interference-correction for accurate hydrogen detection alongside CO, CO2 and CH4.

Applications

• Carbon potential and furnace atmosphere control in carburizing and other heat-treatment processes.
• Process parameter optimization by measuring in-furnace CO concentration to adjust COF/PF settings for accurate carbon potential calculation.
• Furnace fault detection: identification of carbon deposition, water ingress, gas leaks and radiant tube failures through CO/CO2 trend analysis.

Specifications / Technical specifications

• Measuring components: CO, CO2, CH4
• Measuring principle: NDIR (temperature-controlled)
• Measurement range: CO2: 0-5000 ppm; CO: 0-30%; CH4: 0-10% (range customizable)
• Accuracy: ≤±2% F.S.
• Repeatability: ≤±1%
• Response time: <30 s
• Drift: ≤±2% F.S. / 2 month
• Resolution: CO2: 0.1 ppm; CO: 0.01%; CH4: 0.01%
• Inlet flow rate: 0.7–1.2 L/min
• Inlet gas pressure: 2–50 kPa
• Sampling gas condition: no dust, no vapor, no tar
• Operating power: AC110/AC220V ±40V, 50/60Hz
• Communication interface: RS-485 / RS-232
• Output mode: 4–20 mA output