Product Overview
The SGX series of PS1 and PS4 Solid Polymer Electrolyte Gas Sensors leverage a revolutionary technology based on catalytic reaction to measure target gases, generating a current proportional to concentration. These sensors offer 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 applications such as biogas production, water treatment plants, leak detection, and both portable and fixed-point monitoring, these sensors provide reliable performance in harsh environments.
Product Attributes
- Brand: SGX
- Technology: Solid Polymer Electrolyte (SPE)
- Operating Principle: Amperometric, 3-electrode
- Housing Material: PPO
- Calibration: Individually calibrated (including test report)
Technical Specifications
| Specification | Value |
|---|---|
| Models | PS1-H2S-100, PS4-H2S-100 |
| Sensitivity | 90 20 nA/ppm |
| Measurement Range | 0 100 ppm |
| Zero Current | 20 nA |
| Maximum Overload | 200 ppm |
| Response Time (T50) | < 10s |
| Response Time (T90) | < 30s |
| Repeatability | 1% |
| Lower Detectable Limit (LDL) | 1 ppm |
| Linear Range | 100 ppm |
| Resolution (16Bit ADC) | 0.1 ppm |
| Operating Humidity Range | 15-95% RH |
| Pressure Range | 800 to 1200 hPa |
| Storage Temperature | 0 to 20 |
| Temperature Range | -40C to +55C |
| Recommended Load Resistor | 100 |
| 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 (PS1-H2S-100) | < 0.7g |
| Weight (PS4-H2S-100) | < 6g |
Important Notes
- All performance is based on conditions at 20C, 50% RH and 1 atm, flow rate >150 qcm/min, using SGX recommended circuitry.
- Sensor performance is temperature dependent; please contact SGX for temperature performance other than 20C.
- Do not solder to the connector pins as this may damage the sensor and thereby invalidate the warranty.
- Details on recommended connector pins can be found in the Frequently Asked Questions within the Gas Sensor section of the SGX website.
- Exposure to high concentrations of solvent vapours should be avoided during storage, fitting into instruments, and operation.
- When using sensors on printed circuit boards (PCBs), degreasing agents should be used prior to the sensor being fitted.
- For life safety applications, it is recommended that all sensors and instruments using these sensors are checked for response to gas before use.
Features
- Small size
- Wide temperature range
- Fast response time
- No electrolyte leakage
- Extreme linear response up to high concentration
- Excellent sensitivity at low temperatures
- Low cost at large volumes
- Individually calibrated (including test report)
Key Applications
- Biogas Applications
- Water Treatment Plants
- Leak detection
- Portable & Fixed Point Applications
Cross Sensitivity
| Gas | Formula | Test Concentration | Sensor Reading |
|---|---|---|---|
| Ammonia | NH3 | 50ppm | 0ppm |
| Carbon Dioxide | CO2 | 1000ppm | 0ppm |
| Carbon Monoxide | CO | 50ppm | 0ppm |
| Methane | CH4 | 1%vol | 0ppm |
| Hydrogen | H2 | 3ppm | 0ppm |
| Hydrogen Cyanide | HCN | 100ppm | 10ppm |
| Isopropanol | C3H7OH | 3ppm | 0ppm |
| Nitric Oxide | NO | 1000ppm | n.e |
| Sulphur Dioxide | SO2 | 25ppm | 0ppm |
| Chlorine | CL2 | 10ppm | -1.5ppm |
Note: 1) The above interference factors may vary due to different sensors and service life, please refer to the actual test results. 2) This table is not complete for all cross gases, for other gases please contact us.
2411041654_Amphenol-PS1-H2S-100_C6953603.pdf
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