Product Overview
The SX-GCOTSA Series is a potentiostatic electrochemical carbon monoxide sensor. Carbon monoxide and oxygen undergo oxidation-reduction reactions at the working electrode and counter electrode, respectively, generating an electrical current. The output current is proportional to the carbon monoxide concentration, allowing CO concentration to be determined from the measured current.
Main Features
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High Accuracy, Long Service Life
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Fast Response, Fast Return to Zero
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Low Power Consumption, High Sensitivity
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Wide Linear Range, Strong Interference Resistance
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High Repeatability and Stability
Product Application
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Carbon Monoxide (CO) Alarms
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Fire Alarms from Incomplete Combustion of Gas Water
Heaters
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Range Hoods
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Air Quality Detection Instruments
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Vehicle Exhaust Monitoring in Underground Parking
Garages
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In-Cabin Air Quality Detection
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Residential & Commercial Air Purification Equipment
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Cabin Air Purification Equipment & Fresh-Air Systems
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Technical Data
| Measurement | |
| Model | SX-GCOTSA Series |
| Detection Principle | Three-electrode electrochemical |
| Detection Gas | Carbon monoxide (CO) |
| Detection Range | 0–1000 ppm |
| Maximum Load Concentration | 2000 ppm |
| Resolution | 1 ppm |
| Linearity | Linear, regression coefficient R² = 0.999 |
| Sensitivity & Stability | |
| Sensitivity | 80 ±20 nA/ppm |
| Zero Drift | ±2 ppm |
| Repeatability | 1% of output signal |
| Long-Term Stability | < 2% of signal/month |
| Response | |
| Response Time | < 25 s |
| Electrical Data | |
| Bias Voltage | 0 V |
| Load Resistance | 5–30 Ω |
| Output | Current proportional to CO concentration |
| Environmental Conditions | |
| Operating Temperature | −30°C to +50°C |
| Operating Humidity | 15–90% RH, non-condensing |
| Operating Pressure | 90–110 kPa |
| Shelf Life | 12 months from delivery |
| Service Life | 2 years |
| Mechanical Data | |
| Maximum Diameter | Ø20 mm, excluding label |
| Body Height | 16.95 mm |
| Pin Length | 4.40 mm |
| Pin Diameter | Ø1.5 mm |
| Bottom Diameter | Ø17.9 mm |
| Electrode Center Diameter | Ø13.5 mm |
| Dimensional Tolerance | ±0.20 mm |
| Cross Sensitivity | |
| Hydrogen Sulfide H₂S |
1.5 ppm CO reading at 80 ppm |
| Sulfur Dioxide SO₂ | 1.0 ppm CO reading at 20 ppm |
| Nitrogen Dioxide NO₂ | 2 ppm CO reading at 20 ppm |
| Ammonia NH₃ | 1.0 ppm CO reading at 20 ppm |
| Chlorine Cl₂ | 1.0 ppm CO reading at 20 ppm |
| Nitric Oxide NO | 15 ppm CO reading at 50 ppm |
| Hydrogen H₂ | 330 ppm CO reading at 1000 ppm |
Certifications & Compliance
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