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Sensors And Modules
Wattmon interfaces with sensors and modules over Modbus RTU and Modbus TCP. The devices below can be procured though us and are compatible with our hardware
Pyranometers
Sivara PYRA-300V Pyranometer
This pyranometer is an entry level version with limited accuracy.
The sensor’s transducer, which converts incident radiation to electrical current, is a silicon photodiode with wide spectral response. From the sensor’s output voltage, the console calculates and displays solar irradiance. It also integrates the irradiance values and displays total incident energy over a set period of time.
Specifications
| Housing Material : | UV-resistant PVC plastic |
| Weight : | 250 g |
| Range : | 0 to 1800 W/m2 |
| Accuracy : | ±5% of full scale |
| Drift : | + 0.12% per °C up to ±2% per year |
Compatibility
The RS-485 version is compatible with all the Wattmon devices. The Analog version can be directy connected to the Wattmon MEGA, Wattmon ULTRA, or to any of the analog interface modules.NES Mess- und Meldesysteme SOZ-03
The SOZ-03 pyranometer consists of a mono-crystalline silicon cell (50 x 50 mm 2) with special solar glass. The pyranometer is laminated, hence high UV-resistance and long-term stability.Specifications
| Housing Material : | UV-resistant PVC plastic |
| Range : | 0 to 1500 W/m2 |
| Output : | 4 to 20mA |
| Power Supply : | 7 to 30V DC |
| Accuracy : | ±3% of full scale |
| Drift : | ±0.3% per year |
Compatibility
This can be directy connected to the Wattmon ULTRA, or to any of the analog interface modules that have a 0-20mA input channel available such as the AIMS-4U or 8U.Kipp & Zonen RT1 Smart Rooftop Monitoring System
RT1 is a small, fully weatherproof duo-sensor that independently measures the incoming solar irradiance and the back panel temperature. Thanks to this included back panel temperature sensor you collect all the data you need to monitor the performance of your installation - all in digital Modbus format. Thanks to the unique design you can easily fix it to your PV panel without the need for any tools.Specifications
| Range : | 0 to 2000 W/m2 |
| Output : | RS-485 Modbus RTU |
| Output 2: | PV Panel Temperature Sensor |
| Power Supply : | 5 to 30V DC |
| Accuracy : | > 1% |
Compatibility
This can be directy connected to all the Wattmon models.Converters and Interface Modules
4 Channel or 8 Channel DIN Rail Analog Input Module with RS-485 Modbus RTU Interface.
This weather station module is an RS-485 compatible device that can collect data from a variety of weather sensors.Temperature Sensors
Wind Speed & Direction
Wind Speed Sensor is designed with rugged components stand up to hurricane‐force winds, yet are sensitive to a light breeze. Includes sealed bearings for long life. The range and accuracy specifications have been verified in wind‐tunnel tests. In areas where icing of the anemometer is a problem, drip rings deflect water from the joint between moving parts. 
Wind Direction Sensor is designed with rugged components stand up to hurricane force winds, yet are sensitive to a light breeze. Includes sealed bearings for long life. The range and accuracy specifications have been verified in wind‐tunnel tests. In areas where icing of the anemometer is a problem, drip rings deflect water from the joint between moving parts.
Includes both wind speed and wind direction sensors. Rugged components stand up to hurricane‐force winds, yet are sensitive to a light breeze. Includes sealed bearings for long life. The range and accuracy specifications have been verified in wind‐tunnel tests. In areas where icing of the anemometer is a problem, drip rings deflect water from the joint between moving parts.Rain
The Tipping Bucket Rain Gauge has been a corner stone of the RainWise product family since we took out the patent for it in 1976. The self-emptying tipping bucket design is now an industry standard as this simple, accurate and durable rain gauge can be mounted anywhere that rainfall needs to be recorded. The RainWise Tipping Bucket Rain Gauge has an extra large 8” diameter collector that meets the Nation Weather Service specifications for statistical accuracy, and every tip of the bucket is hand calibrated to count one hundredth of an inch of rainfall.