Product Overview
The SGX series of PS1 and PS4 Electrochemical gas sensors utilize a revolutionary Solid Polymer Electrolyte technology based on catalytic reaction principles. These sensors generate a small current proportional to the target gas concentration, offering a stable, high-quality, and cost-effective manufacturing process. They are characterized by their very small size, high sensitivity, zero power consumption, and low cross-sensitivity to other gases. Ideal for medical, industrial, combustion control, food industry, and general gas detection applications.
Product Attributes
- Brand: SGX
- Technology: Solid Polymer Electrolyte
- Housing Material: PPO
- Certifications: Lead free
Technical Specifications
| Specification | PS1-O2-25% | PS4-O2-25% |
|---|---|---|
| Sensitivity | 0.2 0.03 nA / ppm | 0.2 0.03 nA / ppm |
| Measurement Range | 0 25 %vol | 0 25 %vol |
| Zero Current | 40-60 A | 40-60 A |
| Maximum Overload | 30 %vol | 30 %vol |
| Response Time (T50) | < 5s | < 5s |
| Response Time (T90) | < 10s | < 10s |
| Lower Detectable Limit (LDL) | 0.5 %vol | 0.5 %vol |
| Resolution (16Bit ADC) | 0.01 %vol | 0.01 %vol |
| Operating Humidity Range | 15-95% RH | |
| Pressure Range | 800 to 1200 hPA | |
| Storage Temperature | 0 to 20 | |
| Temperature Range | -20C to +55C | |
| Operating Principle | Amperometric, 3-electrode | |
| Recommended Load Resistor | 220 | |
| Bias Voltage | -400 to -600 mV | |
| Warm Up Time | < 15 min | |
| Long-Term Drift | < 1 %/month | |
| Zero Drift in Clean Air | < 0.2 %vol | |
| Storage Life | 12 months | |
| Expected Lifetime | > 5 years | |
| Warranty | 12 months | |
| Weight | < 0.7g | < 6g |
Important Notes & Handling Precautions
- All performance is based on conditions at 20C, 50% RH and 1 atm, flow rate>150qcm/min, using SGX recommended circuitry.
- Sensor performance is temperature dependent; contact SGX for performance outside 20C.
- Do not solder to the connector pins as this may damage the sensor and invalidate the warranty. Use PCB sockets and firmly push-fit the sensor.
- Exposure to high concentrations of solvent vapours should be avoided during storage, fitting, and operation.
- When using sensors on printed circuit boards (PCBs), degreasing agents should be used prior to sensor fitting.
- For life safety applications, it is recommended that all sensors and instruments are checked for response to gas before use.
Cross Sensitivity
Note: Interference factors may vary. Refer to actual test results. This table is not exhaustive; contact SGX for other gases.
| Gas | Formula | Test Concentration | Sensor Reading |
|---|---|---|---|
| Ammonia | NH3 | 20ppm | 0ppm |
| Carbon Dioxide | CO2 | 5000ppm | 0ppm |
| Carbon Monoxide | CO | 1ppm | 0ppm |
| Chlorine | CL2 | 50ppm | 0ppm |
| Hydrogen Cyanide | HCN | 1%vol | 0ppm |
| Hydrocarbons (unsaturated) | C3H8O | 10ppm | 0ppm |
| Hydrogen | H2 | 100ppm | 0ppm |
| Isopropanol | 1000ppm | 0ppm | |
| Nitric Oxide | NO | 25ppm | 10ppm |
| Nitrogen Dioxide | NO2 | 0.5ppm | 20ppm |
| Ozone | O3 | 0ppm | 0ppm |
| Sulphur Dioxide | SO2 | 0ppm | 0ppm |
Temperature Curve
The provided image is a graph illustrating the temperature curve. For precise data, please refer to the visual representation in the original document.
2411261442_Amphenol-PS4-O2-25-_C6737956.pdf
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