Digital Photovoltaic Pyranometer – Litemeter Modbus Pro
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Litemeter Modbus PRO is a digital photovoltaic pyranometer (or irradiance sensor) equipped with a monocrystalline silicon cell. Manufacturing and Calibrations are done following the IEC 61215, IEC 60904-2; 60904-4; 60904-10 regulations. The silicon photovoltaic cell is laminated with E.V.A. and a high performance anti-reflective glass for photovoltaic modules. It guarantees a fair precision in the measurement of irradiance and provides a measurement of the indicative temperature of the photovoltaic modules next to it. This sensor has an RS485 bus interface, using the well known industry standard protocol Modbus RTU.Calibration
All Litemeters are calibrated with our Class A Silicon Reference Cell, itself periodically calibrated by the Dakks accredited ISFH Institute and a HP34410A Multimeter.
Note: the terms irradiance sensor, photovoltaic pyranometer, reference cell and solarimeter are interchangeable. On this site we will use photovoltaic pyranometer. To learn more click here.
Common uses
Litemeter Modbus Pro is ideal for monitoring and managing photovoltaic systems of up to a few hundred kW. It is useful where the monitoring system has RS485 input channels and a high accuracy in performance calculation is not required.Key features
- Standard RS485 Modbus RTU protocol output to ensure readings 500m from the datalogger
- A high performance anti-reflective glass + E.V.A.
- Two 0-10V outputs: irradiance and cell temperature
- Aluminum body
- Mounting bracket for quick installation
- Resistant to extreme weather
- IEC EN 61215 par.10,11,12 compliant (product ageing)
- Calibrations according to IEC 60904
- Order code that allows you to obtain the most suitable sensor for your climate zone
Datasheet
| NAME | Litemeter PRO | |
| PRODUCT | LM2-485 PRO – solar irradiance sensor with monocrystalline silicon cell (solarimeter) | |
| REFERENCE STANDARDS | IEC 60904-2; 60904-4; 60904-10 | |
| OUTPUT | Digital | |
| Input range | Irradiance: | 0 ÷ 1250 W/m2 |
| Spectral range | 0.36μm ÷ 1.14μm | |
| Temperature | -30 ÷ +85°C (1) | |
| Output signal (digital RS485 standard Modbus RTU) | Irradiance | 0 ÷ 1250 W/m2 (not temperature compensated) |
| Output precision | Irradiance | ±5% (2.5% @S.T.C. (25°C)) |
| Temperature | ± 1.0 °C | |
| Response time | < 100 milliseconds | |
| Sensor type | Digital solarimeter | |
| Supply | External | 12 ÷ 30V DC |
| Encapsulation | Glass + E.V.A. + Polyester | |
| Cable | 3 m or 60cm with M8 4 pin connector | |
| Connectors | 4+1 GND loose pins (or M8 4 pin) | |
| Dimensions | 98x55x25 mm without fixing bracket | |
| IP code | IP 65 | |
Pyranometers
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Temperature sensors