Product Overview
The SX-GNOTMA Series is a potentiostatic electrochemical nitric oxide sensor. Nitric oxide 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 nitric oxide concentration, allowing NO concentration to be determined from the measured current.
Main Features
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High Accuracy, Long Life —— Precise detection with extended operating life
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Fast Response, Fast return to zero —— Quick response with rapid baseline recovery
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Compact Size, Low Power, High Sensitivity —— Compact package with low power consumption
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Wide Linear Range, Strong Anti-Interference —— Robust performance across the measurement range
- High Repeatability and Stability —— Consistent long-term performance
Product Application
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Nitric oxide detection instruments
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Industrial on-site nitric oxide gas detection
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Atmospheric / ambient nitric oxide detection
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Smart municipal nitric oxide detection
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Environmental nitric oxide detection
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Technical Data
| Measurement | |
| Example Model | SX-GNOTMA-320 |
| Detection Principle | Three-electrode electrochemical |
| Detection Gas | Nitric oxide (NO) |
| Detection Range | 0–100 ppm |
| Maximum Overload Concentration | 200 ppm |
| Sensitivity & Output | |
| Sensitivity | 350 ± 100 nA/ppm |
| Zero Drift | ±2 ppm |
| Resolution | 0.5 ppm |
| Linearity | Linear |
| Output | Current proportional to NO concentration |
| Response | |
| Response Time | < 30 s |
| Repeatability | <±2% |
| Stability & Service Life | |
| Long-Term Stability | < 5% signal/year |
| Shelf Life | 12 months after delivery |
| Service Life | 2 years |
| Electrical Data | |
| Bias Voltage | +300 mV |
| 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 |
| Mechanical Data | |
| Overall Dimensions | Approx. Ø14 × 9.5 mm |
| Pin Length | 3.5 mm |
| Pin Diameter | Ø0.8 mm |
| Dimensional Tolerance | ±0.2 mm |
| Cross-Interference | |
| Ammonia (NH₃) | 0 ppm NO reading at 50 ppm |
| Carbon Monoxide CO |
−0.6 ppm NO reading at 100 ppm |
| Sulfur Dioxide SO₂ | 0.5 ppm NO reading at 20 ppm |
| Hydrogen Sulfide H₂S | 8 ppm NO reading at 25 ppm |
| Hydrogen (H₂) | -5 ppm NO reading at 1000 ppm |
| Nitrogen Dioxide NO₂ | 1 ppm NO reading at 10 ppm |
Certifications & Compliance
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