Integrate H2S sensing into a compatible portable or fixed gas detector.
Review the mechanical interface and pin arrangement before design-in.
Compare output, load and response characteristics with your electronics.
Confirm calibration gas, expected life and replacement requirements.
Request the supplied-part datasheet to verify electrical values and cross-sensitivity.
The 4H2S-100 is an H2S sensing component for integration into a compatible portable or fixed gas detector. It is not a standalone alarm. Check the mechanical fit, output signal and load against the host electronics before design-in.
For a dependable installation, request the datasheet for the actual supplied part and confirm its response, cross-sensitivity, calibration gas, operating conditions and replacement interval.
| Performance Characte ristics | |
| Output signal | 700 ± 250 nA / ppm |
| Typical Baseline Range (pure air) | ±2 ppm CO equivalent |
| T90 Response Time | < 30 seconds |
| Measurement Range | 0 – 100 ppm |
| Maximum Overload | 500 ppm |
| Linearity | Linear |
| Repeatability | < ±2% H2S equivalent |
| Recommended Load Resistor | 10 ohms |
| Resolution (Electronics dependent) | < 0.1 ppm typical |
| Environmental | |
| Temperature Range Continuous | -30oC to +50oC |
| Pressure Range | 800 to 1200 mbar |
| Operating Humidity Range | 15% to 90% RH |
| Lifetime | |
| Long Term Output Drift | < 5% per annum |
| Recommended Storage Temp | 0oC to 20oC |
| Expected Operating Life | > 24 months in air |
| Standard Warranty | 24 months from date of dispatch |
| Intrinsic Safety Da ta | |
| Maximum at 2000 ppm | 0.3 mA |
| Maximum o/c Voltage | 1.3 V |
| Maximum s/c Current | <1.0 A |
| Cross -Sensitivity Data | ||
| GAS | CONC. | GS+4H2S |
| Carbon Monoxide | 100 ppm | <2 ppm |
| Sulphur dioxide | 20 ppm | 0 ppm |
| Nitrogen Dioxide | 5 ppm | <0.5 ppm |
| Nitric Oxide | 50 ppm | <0.5 ppm |
| Ammonia | 50 ppm | 0 ppm |
| Chlorine | 15 ppm | 0 ppm |
| Ethylene | 100 ppm | 0 ppm |
| Carbon Dioxide | 5000 ppm | 0 ppm |
Important Note:
The values above are typical values and should not be used as a basis for cross calibration. Cross sensitivities may not be linear and should not be scaled either. Above data based on gassing for 5 minutes using CCR Scientific test equipment. Should be noted some cross interference break through will occur if gas is applied for a longer period of time.
Poisoning:
CCR Scientific sensors are designed to operate in a wide range of harsh environments and conditions. However, it is important that exposure to high concentrations of solvent vapors is avoided, both during storage, fitting into instrument and operation.
When using sensors on printed circuit boards (PCB’s), degreasing agents should be used prior to the sensor being fitted.
Tell us the target range, host detector, electrical interface, operating conditions and quantity.
