The phosphine gas sensor module helps monitor toxic PH3 gas concentrations in workplaces where phosphine may be generated, stored, or used. It is suitable for chemical processing, grain fumigation, pesticide production, semiconductor manufacturing, and laboratory safety monitoring, supporting gas leak detection and workplace environmental monitoring.

Dual UART and Analog Signal Outputs

Standard MODBUS Communication Protocol
| Model | SISCO-GS-PH3-K5S |
| Detecting Gas | Phosphine (PH3) |
| Detecting Range | 0-5/0-20/0-100/0-1000/0-2000/0-3000 ppm |
| Working Voltage | DC 5V±0.5V |
| Power Consumption | ≤1W |
| Working Temperature | -20℃~50℃ |
| Humidity | 15%~95%RH (no condensation) |
| Working Pressure | 86~106Kpa |
| Adoption Method | Natural diffusion |
| Detection Unit | ppm |
| Resolution | 0.1/0.1/1/1/1/10 ppm |
| Technical Principle | Electrochemical three electrodes |
| Tolerance | ≤±3% |
| Repeatability | ≤±1% |
| Response Time | ≤60s |
| Communication Format | UART baud rate 9600, data bit: 8; stop bit: 1; check bit: none |
| Communication Protocol | Modbus-RTU communication protocol |
| Analog Output | 0~3V |
| Warm-up Time | 30s (user adjustable) |
| Lifetime | 2 years |
| Weight | 10g |

Q1: What is a phosphine (PH3) gas sensor?
A1: A phosphine gas sensor is used to detect and monitor PH3 concentrations in the surrounding environment. It is commonly applied in chemical plants, semiconductor manufacturing, fumigation operations, laboratories, and industrial safety monitoring.
Q2: Why is phosphine gas detection important?
A2: Phosphine (PH3) is a highly toxic and flammable gas that can pose serious risks to human health and workplace safety. A PH3 gas sensor helps detect potential gas leaks and monitor concentration changes, supporting timely safety measures in industrial and laboratory environments.
Q3: How does a PH3 Gas Sensor communicate with monitoring systems?
A3: A PH3 gas sensor can provide UART digital and analog signal outputs for flexible system integration. Models supporting the standard MODBUS protocol can also connect with industrial controllers, gas detection equipment, and monitoring systems.
Tips: What factors should be considered when selecting a PH3 gas sensor?
When choosing a phosphine gas sensor, consider its detection range, measurement accuracy, response time, signal output, and communication protocol. Compatibility with existing gas monitoring systems is also important for reliable PH3 gas detection in industrial and laboratory applications.
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