Product Overview
The SX-GNOFSA Series is a potentiostatic four-electrode 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 NO concentration, allowing NO concentration to be determined from the measured current. An auxiliary electrode is used to compensate the baseline current, and a compensation algorithm improves measurement accuracy at low concentrations
Main Features
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Four Electrodes, Low Detection Limit, High Accuracy
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Fast Response, Fast return to zero
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Low Power Consumption, High Sensitivity
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Strong Interference Resistance
- High Repeatability and Stability
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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Environmental nitric oxide detection
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Smart municipal nitric oxide detection
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Technical Data
| Measurement | |
| Example Model | SX-GNOFSA-600 |
| Detection Principle | Four-electrode electrochemical |
| Detection Gas | Nitric oxide (NO) |
| Detection Range | 0–10 ppm |
| Maximum Overload Concentration | 30 ppm |
| Sensitivity & Output | |
| Sensitivity | 1000 ± 400 nA/ppm at 20°C |
| Resolution | 15 ppb |
| Linearity | Linear |
| Output | Current proportional to NO concentration |
| Response & Accuracy | |
| Response Time | ≤30 s |
| Repeatability | 5% of output signal |
| Long-Term Stability | <±2% signal value/month |
| Stability & Service Life | |
| Shelf Life | 12 months after delivery |
| Service Life | 2 years |
| Electrical Data | |
| Bias Voltage | +300 mV |
| Load Resistance | 10 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 | Ø31.5 mm |
| Body Height | 16.2 mm |
| Pin Length | 3.9 mm |
| Pin Diameter | Ø1 mm |
| Top Feature Diameter | Ø18.8 mm |
| Bottom Reference Diameters | Ø24 / Ø22 / Ø17 mm |
| Pin Arrangement Angle | 45° |
| Dimensional Tolerance | ±0.2 mm |
| Cross-Interference | |
| Carbon Monoxide CO |
5 ppb NO reading at 50 ppm |
| Sulfur Dioxide SO₂ | 6 ppb NO reading at 5 ppm |
| Hydrogen Sulfide H₂S | 40 ppb NO reading at 5 ppm |
| Nitrogen (N₂) | 0 ppb NO reading at 100% by volume |
| Carbon Dioxide (CO₂) | 10 ppb NO reading at 300,000 ppm |
| Ammonia (NH₃) | 9 ppb NO reading at 20 ppm |
Certifications & Compliance
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