Product description: Gravity - PH3 hydrogen phosphide sensor - I2C / UART - factory calibrated - DFRobot SEN0476
A sensor from DFRobot that measures the concentration of hydrogen phosphide. The module has a factory calibrated probe, so the measurement is made quickly and accurately. It supports three output modes: analog, I2C and UART. It has as many as 32 I2C addresses to choose from. The detection range is from 0 ppm to 1000 ppm. The module has strong anti-interference properties, very good sensitivity and high measurement stability.
Contents of the set
- PH3 hydrogen phosphide sensor - adapter board
- PH3 sensor probe
- Gravity 4-pin connection cable
Gravity - hydrogen phosphide sensor.
Product compatible with Arduino, ESP32, Raspberry Pi
The manufacturer has prepared a detailed user guide, which includes, among other things, connection instructions and sample program code.
The sensors have the same data format so they can work in parallel.
A series of pre-calibrated sensors from DFRobot
DFRobot has developed a series of sensors that have been factory calibrated. The series consists of up to 12 modules, which enable the detection of the most common gases. Among them we can find CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF sensors.
In addition, the sensors in this series operate in the same way and have the same data format, so they can work in parallel.
Phosphorus in the air?
Hydrogen phosphide PH3 has strong toxic properties and is an extremely flammable gas. It is used to gasify grain stores and wooden structures in buildings, animal food and tobacco leaves, and fruits and vegetables. Neutralization of the gas effect can be done, for example, by using a long incubation period.
Suggested applications
- Industrial phosphine detection
- Mining phosphine detection
- Environmental protection in general
- Intelligent agriculture
Technical specification of the sensor
- Detected gas: hydrogen phosphide PH3
- Compatibility: Arduino, ESP32, Raspberry Pi
- Detection range: from 0 ppm to 1000 ppm
- Supply voltage: 3.3 V to 5.5 V DC
- Current consumption: ＜5 mA
- Output signal: analog
- Communication interface: UART / I2C
- Operating temperature range: -20°C to 50°C
- Lifetime: > 2 years
- Sensor adapter board dimensions: 37 x 32 mm
The sensor probe has been factory calibrated which allows fast and precise measurements.
Comparative table of the calibrated sensor series from DFRobot
| DFR-20981 | DFR-20982 | DFR-21003 | DFR-21002 | |
|---|---|---|---|---|
| Gas type | O2 oxygen | CO gas | H2S hydrogen sulphide | CL2 chlorine |
| Detection range | 0% to 25% vol. | 0 ppm to 1000 ppm | 0 ppm to 100 ppm | 0 ppm to 20 ppm |
| Resolution | 0.1% vol. | 1 ppm | 1 ppm | 0,1 ppm |
| Output voltage range V0 | 0 V to 1.5 V | 0.6 V to 3 V | 0.6 V to 3 V | 0 V to 2 V |
| Vout1 | 1 V @ 10% vol. | 0.9 V @ 200 ppm | 1.5 V @ 50 ppm | 1.2 V @ 10 ppm |
| Response time (T90) | ≤ 15 s | ≤ 30 s | ≤ 30 s | ≤ 60 s |
| DFR-21001 | DFR-21000 | DFR-20999 | DFR-20998 | |
|---|---|---|---|---|
| Gas type | NH3 ammonia | SO2 sulphur dioxide | NO2 nitrogen dioxide | O3 ozone |
| Detection range | 0 ppm to 100 ppm | 0 ppm to 20 ppm | 0 ppm to 20 ppm | 0 ppm to 10 ppm |
| Resolution | 1 ppm | 0,1 ppm | 0,1 ppm | 0,1 ppm |
| Output voltage range V0 | 0.6 V to 3 V | 0.6 V to 3 V | 0 V to 2 V | 0 V to 2 V |
| Vout1 | 1.4 V @ 50 ppm | 0.9 V @ 10 ppm | 1,3 V @ 10 ppm | 0.7 V @ 5 ppm |
| Response time (T90) | ≤ 150 s | ≤ 30 s | ≤ 30 s | ≤ 120 s |
| DFR-20997 | DFR-20996 | DFR-21010 | DFR-20995 | |
|---|---|---|---|---|
| Gas type | H2 hydrogen | HCL hydrogen chloride | HF hydrogen fluoride | PH3 hydrogen phosphide |
| Detection range | 0 ppm to 1000 ppm | 0 ppm to 10 ppm | 0 ppm to 10 ppm | 0 ppm to 1000 ppm |
| Resolution | 1 ppm | 0,1 ppm | 0,1 ppm | 0,1 ppm |
| Output voltage range V0 | 0.6 V to 3 V | 0 V to 2 V | 0 V to 2 V | 0.6 V to 3 V |
| Vout1 | 1.3 V @ 500 ppm | 0.7 V @ 5 ppm | 0,7 V @ 5 ppm | 0.7 V @ 50 ppm |
| Response time (T90) | ≤ 120 s | ≤ 60 s | ≤ 60 s | ≤ 30 s |
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