Model: ECHO-Gateway
Cloud-enabled IoT data logger
The data logger at the core of every SpaceEcho station: it acquires sensor data, stores it locally and sends i...
All products
Model: SEM228V
UV Sensor
UV intensity sensor for 290–390 nm, 0–15 mW/cm², IP67 aluminium housing, RS-485 Modbus-RTU or analogue output.
The SEM228V measures ultraviolet intensity. A photosensitive element converts UV light in the 290–390 nm band into an electrical signal, so UV can be monitored online, in the atmosphere or under artificial light sources. It is used in environmental monitoring, weather monitoring, agriculture and forestry. It connects to a SpaceEcho station and reports to EchoCloud.
Features
- Sensitive to 290–390 nm
- The ultraviolet band it is built to measure.
- Fast response
- 0.2 s.
- Modbus-RTU over RS-485
- It can communicate over distances up to 2000 m, and supports secondary development.
- Wide supply range
- 10–30 V DC.
- IP67 aluminium housing
- For outdoor use.
Specifications
| Measurement wavelength | 290–390 nm |
|---|---|
| Measuring range | 0–15 mW/cm² |
| Resolution | 0.01 mW/cm² |
| Accuracy | ±10 % FS (at 60 % RH, 25 °C) |
| Linearity | ≤ ±1 % |
| Annual stability | ≤ ±3 % |
| Response time | 0.2 s |
| Output | RS-485 (Modbus-RTU), 4–20 mA, 0–5 V or 0–10 V, by order code |
| Supply voltage | 10–30 V DC (0–10 V output: 24 V DC only) |
| Power consumption | 0.06 W (RS-485); 0.6 W (4–20 mA, 0–5 V, 0–10 V) |
| Operating temperature | −25–60 °C |
| Protection | IP67 |
| Housing | Aluminium |
| Cable length | Configurable |
Related radiation sensors
The Total Solar Radiation Sensor and the SEM228V measure different parts of the spectrum, so they do not replace each other.
| Sensor | Measures | Band | Range |
|---|---|---|---|
| Total Solar Radiation Sensor | Total solar radiation | 0.3–3 µm | 0–2000 W/m² |
| SEM228V | Ultraviolet | 290–390 nm | 0–15 mW/cm² |
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- A site survey before anything is specified
- Installation, commissioning and operator training
- EchoCloud access from the day the station reports
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