Model: FD-H2S-SENSORDatasheet: Click Here PDFAvailability: Usually in stockCompatible: FD-90A-H2S, FD-60-H2S, FD-103-H2S, FD-4S, FD-4A, FD-600-4GAS Features ⚛️ High precision and long life (3 years) 🚄 Fast response speed, fast return to zero (T< 30 seconds) 🔋 Low power consumption, high sensitivity 🔬Wide linear range, strong anti-interference ability 💪 Excellent repeatability and stability Description These are generic H2S sensors used as the pin-to-pin replacement of the standard 4-series electrochemical sensors. It is used throughout many gas detector brands and is an excellent H2S gas sensor replacement element. The hydrogen sulfide gas sensor operates as a constant-potential electrolytic sensor. When hydrogen sulfide and oxygen are present, they undergo complementary redox reactions at the working and counter electrodes, releasing charges that generate a current. Since this current is directly proportional to the hydrogen sulfide concentration, measuring the current allows for precise determination of hydrogen sulfide levels. The H2S sensor excels in hydrogen sulfide detection across multiple settings, including industrial sites, mines, atmospheric environments, and alarm systems. Its outstanding features include high precision, longevity, rapid response and recovery times, energy efficiency, and exceptional sensitivity. The sensor boasts a wide linear range, strong resistance to interference, and remarkable repeatability and stability, making it an ideal solution for reliable hydrogen sulfide monitoring. Instructions Once replaced and installed in your gas detector or analyzer, please let it sit for 24 hours so the sensor can stabilize to your environment. This step is very important. Then undertake the appropriate zero and calibration for your specific gas detector. See your gas detector manufacturer's specific instructions. Once calibrated, your gas analyzer will be ready for use. Specifications Detection principle Electrochemical Three electrodes Detection gas H₂S Detection range 0-100 PPM Maximum load concentration 500 PPM Sensitivity 650 ± 200 nA/PPM Zero drift ± 2 PPM Resolution 1 PPM Response time < 30s Bias voltage 0 Load resistance 5~30Ω Operating temperature -30°C to 50°C Operating humidity 15% RH to 90% RH (no condensation) Repeatability < ± 1% output signal Long-term stability < 2% signal/month Linearity Linearity, regression coefficient R² = 0.999 Work pressure 90 to 110 kPa Shelf life 12 months after delivery Service life 3 years Cross-Sensitivity Data Interfering Gas Concentration (ppm) Output Signal (ppm) CO 300 0 SO₂ 5 1 NO₂ 5 -1 H₂ 10000 25 NO 35 1
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