Product Overview
The SX-GVOCTSA Series is a potentiostatic electrochemical VOC sensor. VOCs 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 VOC concentration, allowing VOC concentration to be determined from the measured current.
Main Features
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Fast Response, Fast Recovery —— Cost-effective design with fast response and rapid baseline recovery
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Low Power, High Sensitivity —— Low power consumption with high sensitivity
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Wide Linear Range —— Robust performance across the measurement range
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High Resistance to Interference —— Low susceptibility to common interfering gases
- High Repeatability and Stability —— Consistent long-term performance
Product Application
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VOC detection instruments
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Industrial on-site VOC gas detection
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VOC monitoring for medical-related applications
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Smart municipal VOC detection
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Ambient VOC monitoring
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Technical Data
| Measurement | |
| Example Model | SX-GVOCTSA-470 |
| Detection Principle | Electrochemical, three-electrode (potentiostatic) |
| Detection Gas | VOC |
| Detection Range | 0–200 ppm |
| Maximum Overload Concentration | 500 ppm |
| Sensitivity | |
| Sensitivity | 55 ± 15 nA/ppm |
| Resolution | 1 ppm |
| Response | |
| Response Time | ≤ 60 s |
| Repeatability | 2% of output signal |
| Long-Term Stability | < 2% signal/month |
| Stability & Service Life | |
| Shelf Life | 12 months after delivery |
| Service Life | 2 years |
| Electrical Data | |
| Bias Voltage | 0 mV |
| Load Resistance | 100 Ω |
| Environmental Conditions | |
| Operating Temperature | −30°C to +50°C |
| Operating Humidity | 15–90% RH, non-condensing |
| Operating Pressure | 90–110 kPa |
| Mechanical Data | |
| Body Diameter | Ø20 mm, without label |
| Body Height | 16.95 mm |
| Pin Length | 4.4 mm |
| Pin Diameter | Ø1.5 mm |
| Dimensional Tolerance | ±0.2 mm |
| Cross-Interference | |
| Ammonia (NH₃) | Test concentration: 50 ppm; Reading: −1 ppm |
| Carbon Monoxide (CO) | Test concentration: 100 ppm; Reading: 125 ppm |
| Chlorine (Cl₂) | Test concentration: 10 ppm; Reading: −3 ppm |
| Ethylene Oxide (ETO) | Test concentration: 14 ppm; Reading: 3 ppm |
| Acetylene (C₂H₂) | Test concentration: 100 ppm; Reading: 250 ppm |
| Hydrogen Sulfide (H₂S) | Test concentration: 25 ppm; Reading: 100 ppm |
| Sulfur Dioxide (SO₂) | Test concentration: 20 ppm; Reading: 9 ppm |
| Ethylene (C₂H₄) | Test concentration: 100 ppm; Reading: 170 ppm |
Certifications & Compliance
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