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Litemeter Current is an analog photovoltaic pyranometer (or irradiance sensor)
It is equipped with a monocrystalline silicon cell for high efficiency, and temperature compensated output. Manufacturing and Calibrations are done following the IEC 61215, IEC 60904-2; 60904-4; 60904-10 regulations.
It needs an external power supply. The 4-20mA current loop output allows to obtain reliability and immunity to signal noise. This guarantees quality signal even at long distances (30m and more) also in areas with many electromagnetic disturbances like industrial areas and photovoltaic systems greater than 100 Kw.
The current output 4-20mA allows the analog signal to remain unchanged in cases whereas the distance between the sensor and the control unit is 10m and more, or in disturbed areas. Distance up to 20-35m are attainable if there’s no signal interference.
Litemeter Current is simple, affordable and easy to install.
Calibration
All Litemeters are calibrated with our Class A PV 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
Despite being our smallest solar irradiance sensor, the LM1-420 has lots of potential. Although it is usually employed in smaller PV systems, thanks to its high EMC immunity, Litemeter Current can also be used in larger photovoltaic systems.Key features
- Output 4-20 mA
- Power supply 9÷30Vdc
- Easy to use
- Calibrated with a silicon reference cell which is adjusted every 6 months on the K&Z CMP22 pyranometer of the Teolo Weather Center
- Complies with IEC 60904
- Quick mounting bracket for easy installation.
Datasheet
| NAME | Litemeter Current | |
| PRODUCT | LM1-420 – solar irradiance sensor with monocrystalline silicon cell (photovoltaic pyranometer) | |
| REFERENCE STANDARDS | IEC 60904-2; 60904-4; 60904-10; | |
| OUTPUT | Current | 4÷20 mA(maximum output: 25mA) |
| Output precision | Irradiance | ± 3.5% temperature compensated |
| Working temperature | -25 ÷ +80°C | |
| Calibration | Calibrated with our Class A PV Reference Cell, itself periodically calibrated by the Dakks accredited ISFH Institute and a HP34410A Multimeter | |
| Response time | < 100 milliseconds | |
| Sensor type | Solarimeter with temperature compensation | |
| Supply | Ext. Current loop | 9÷30 Vdc |
| Encapsulant | Transparent resin, UV-resistant ( IEC 60904-2 ) | |
| Cable | 50cm UV and high temperature resistant cable | |
| Connector | Female 3 pin IP67 code | |
| Dimensions | 48x62x15 mm without mounting bracket | |
Compatibility
| Producer | Datalogger / Inverter model |
|---|---|
| FIMER/ABB | ABB with PMU expansion board |
| SMA | SMA Data Manager M + I/O Modules of third parties |
| SMA | SMA inverters with MD.SEN-40 |
| Meteocontrol | BlueLog |
| SolarEdge | SE Gateway Datalogger |
| Sungrow | Sungrow COM100 E/ COM100 A |
| Kaco | Kaco Inverter |
Pyranometers
Anemometers
Temperature sensors