Product Overview
The SX-GCOTMA 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
- High Accuracy, Long Service Life
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Fast Response, Fast Return to Zero
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Small Size, 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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Industrial Safety CO Alarms
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Fire Alarms from Incomplete Combustion of Gas Water
Heaters
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CO Monitoring in 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 | |
| Example Model | SX-GCOTMA-230 |
| Detection Principle | Electrochemical, three-electrode |
| Detection Gas | Carbon monoxide (CO) |
| Detection Range | 0–1000 ppm |
| Maximum Load Concentration | 1500 ppm |
| Resolution | 1 ppm |
| Linearity | Linear |
| Sensitivity & Output | |
| Sensitivity | 45 ± 15 nA/ppm |
| Zero Drift | ±3 ppm |
| Repeatability | < ±2% |
| Long-Term Stability | < 2% signal/month |
| Output Type | Current output proportional to CO concentration |
| Response | |
| Response Time | < 30 s |
| Electrical Specifications | |
| Bias Voltage | 0 V |
| Load Resistance | 5–30 Ω |
| 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 | |
| Overall Dimensions | Ø14 mm |
| Sensing Opening Diameter | Ø9 mm |
| Body Height | 9.5 mm |
| Pin Length | 3.5 mm |
| Pin Diameter | Ø0.8 mm |
| Dimensional Tolerance | ±0.2 mm |
| Cross Sensitivity | |
| Hydrogen Sulfide H₂S |
0.75 ppm CO reading at 15 ppm |
| Sulfur Dioxide SO₂ | 1 ppm CO reading at 20 ppm |
| Hydrogen H₂ | 25 ppm CO reading at 100 ppm |
| Ammonia NH₃ | 0 ppm CO reading at 50 ppm |
| Nitrogen Dioxide NO₂ | 1 ppm CO reading at 10 ppm |
| Nitric Oxide NO | 15 ppm CO reading at 50 ppm |
Certifications & Compliance
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