SGX Solid Polymer Electrolyte Gas Sensors - Hydrogen Sulfide (H2S)
Product Overview
SGX Solid Polymer Electrolyte (SPE) gas sensors, specifically the PS1 and PS4 series for Hydrogen Sulfide (H2S), utilize a revolutionary SPE technology based on catalytic reaction. These sensors generate a small current proportional to the target gas concentration, offering a stable, high-quality, and cost-effective solution. Their small size, high sensitivity, and lack of power consumption, coupled with very low cross-sensitivity, make them ideal for various applications. Key benefits include a wide temperature range, fast response time, no electrolyte leakage, extreme linearity up to high concentrations, excellent sensitivity at low temperatures, and low cost at large volumes. Each sensor is individually calibrated with a test report.
Key Applications
- Biogas Applications
- Water Treatment Plants
- Leak detection
- Portable & Fixed Point Applications
Product Attributes
- Brand: SGX
- Technology: Solid Polymer Electrolyte (SPE)
- Housing Material: PPO
- Origin: Poland (SGX Europe Sp. z o.o.)
- Calibration: Individually calibrated (including test report)
Technical Specifications
| Specification | PS1-H2S-500 | PS4-H2S-500 |
|---|---|---|
| Sensitivity | 90 ± 20 nA/ppm | 90 ± 20 nA/ppm |
| Measurement Range | 0 500 ppm | 0 500 ppm |
| Zero Current | ± 20 nA | ± 20 nA |
| Maximum Overload | 1000 ppm | 1000 ppm |
| Response Time (T50) | < 10s | < 10s |
| Response Time (T90) | < 30s | < 30s |
| Repeatability | < 1% | < 1% |
| Lower Detectable Limit (LDL) | ≤ 2 ppm | ≤ 2 ppm |
| Linear Range | 500 ppm | 500 ppm |
| Resolution (16Bit ADC) | 0.1ppm | 0.1ppm |
| Operating Humidity Range | 15-95% RH | |
| Pressure Range | 800 to 1200 hPa | |
| Storage Temperature | 0 to 20°C | |
| Temperature Range | -40°C to +55°C | |
| Operating Principle | Amperometric, 3-electrode | |
| Recommended Load Resistor | 100 Ω | |
| Bias Voltage | 0 mV | |
| Warm Up Time | < 60 s | |
| Long-Term Drift | < 1 %/month | |
| Zero Drift in Clean Air | < 2 ppm | |
| Storage Life | 12 months | |
| Expected Lifetime | > 3 years in air | |
| Warranty | 12 months | |
| Weight | < 0.7g | < 6g |
Cross Sensitivity
| Gas | Formula | Test Concentration | Sensor Reading (PS1/PS4) |
|---|---|---|---|
| Ammonia | NH3 | 50ppm | n.e |
| Carbon Dioxide | CO2 | 1000ppm | 0ppm |
| Carbon Monoxide | CO | 50ppm | 0ppm |
| Methane | CH4 | 1%vol | 3ppm |
| Hydrogen | H2 | 50ppm | 0ppm |
| Hydrogen Cyanide | HCN | 3ppm | 0ppm |
| Isopropanol | C3H7OH | 100ppm | 10ppm |
| Nitric Oxide | NO | 3ppm | 0ppm |
| Sulphur Dioxide | SO2 | 1000ppm | n.e |
| Chlorine | CL2 | 25ppm | -1.5ppm |
Note: Interference factors may vary. Refer to actual test results. This table is not exhaustive; contact SGX for other cross gases.
Important Notes
- Performance is based on conditions at 20°C, 50% RH, 1 atm, flow rate >150 qcm/min, using SGX recommended circuitry.
- Sensor performance is temperature dependent; contact SGX for data at temperatures other than 20°C.
- Do not solder to connector pins; this may damage the sensor and invalidate the warranty.
- Recommended connector pin details are available in the SGX website FAQ.
- Avoid exposure to high concentrations of solvent vapors during storage, fitting, and operation.
- When using sensors on PCBs, use degreasing agents prior to fitting.
- For life safety applications, check sensor response to gas before use.
Disclaimer: SGX Europe Sp. z o.o. reserves the right to change specifications without prior notification. No legal responsibility is accepted for customer applications. Liability for consequential losses, injury, or damage is excluded. Data is for guidance only and not a warranty. All specifications are subject to change.
2411272248_Amphenol-PS1--H2S-500_C5848064.pdf
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