Product Overview
The SGX series of PS1 and PS4 Formaldehyde sensors leverage a revolutionary 'Solid Polymer Electrolyte' technology based on catalytic reaction principles. These sensors generate a small current proportional to the formaldehyde concentration, offering a stable, high-quality, and cost-effective manufacturing process. Key advantages include a very small size, high sensitivity, no power consumption, and very low cross-sensitivity from other gases. They are ideal for TLV Monitoring and Indoor Air Quality applications.
Product Attributes
- Brand: SGX
- Technology: Solid Polymer Electrolyte
- Housing Material: PPO
- Origin: Poland (SGX Europe Sp. z o.o.)
Technical Specifications
| Specification | Model: PS1-HCHO-5 | Model: PS4-HCHO-5 |
|---|---|---|
| Sensitivity | 35 ± 20 nA / ppm | 35 ± 20 nA / ppm |
| Measurement Range | 0 5 ppm | 0 5 ppm |
| Zero Current | ± 2 nA | ± 2 nA |
| Maximum Overload | 100 ppm | 100 ppm |
| Response Time (T50) | < 20s | < 20s |
| Response Time (T90) | < 120s | < 120s |
| Repeatability | 1% | 1% |
| Lower Detectable Limit (LDL) | ≤0.05 ppm | ≤0.05 ppm |
| Linear Range | 5 ppm | 5 ppm |
| Resolution (16Bit ADC) | 0.01ppm | 0.01ppm |
| Operating Humidity Range | 15-95% RH | 15-95% RH |
| Pressure Range | 800 to 1200 hPa | 800 to 1200 hPa |
| Storage Temperature | 0 to 20°C | 0 to 20°C |
| Temperature Range | -20°C to +55°C | -20°C to +55°C |
| Operating Principle | Amperometric, 3-electrode | Amperometric, 3-electrode |
| Recommended Load Resistor | 100 Ω | 100 Ω |
| Bias Voltage | 0 mV | 0 mV |
| Warm Up Time | < 60 s | < 60 s |
| Long-Term Drift | < 1 %/month | < 1 %/month |
| Zero Drift in Clean Air | < 0.2 ppm | < 0.2 ppm |
| Storage Life | 12 months | 12 months |
| Expected Lifetime | > 3 years in air | > 3 years in air |
| Storage Conditions | 0-20°C | 0-20°C |
| Warranty | 12 months | 12 months |
| Weight | < 0.7g | < 6g |
Important Notes
- All performance is based on conditions at 20°C, 50% RH and 1 atm, flow rate>150qcm/min, using SGX recommended circuitry.
- Sensor performance is temperature dependent; please contact SGX for temperature performance other than 20°C.
- 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 performance requirements, it is recommended that all sensors and instruments using these sensors are checked for response to gas before use.
Cross Sensitivity
| Gas | Formula | Test Concentration | Sensor Reading (PS1/PS4) |
|---|---|---|---|
| Ammonia | NH3 | 100ppm | 0ppm |
| Benzene | C6H6 | 50ppm | 0ppm |
| Carbon Dioxide | CO2 | 5000ppm | 0ppm |
| Chlorine | CL2 | 20ppm | 0ppm |
| Ethanol | C2H6O | 100ppm | 0ppm |
| Ethylene | C2H4 | 100ppm | 0ppm |
| Hydrogen Chloride | HCL | 5ppm | 0ppm |
| Hydrogen Cyanide | HCN | 20ppm | < 1ppm |
| Hydrogen | H2 | 100ppm | < 3ppm |
| Hydrogen | H2 | 20 000ppm | < 50ppm |
| Methane | CH4 | 10 000ppm | 0ppm |
| Nitrogen Dioxide | NO2 | 10ppm | 0ppm |
| Sulphur Dioxide | SO2 | 10ppm | < 1ppm |
| Toluene | C7H8 | 50ppm | 0ppm |
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.
2404231446_Amphenol-PS4-HCHO-5_C7030159.pdf
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