Irradiation Sensor

LiteMeter modbus

LiteMeter modbus is a low-cost photovoltaic pyranometer.

Irradiation SensorDesigned in accordance with the IEC 60904 and later, the Litemeter MODBUS is quick and easy to install and compatible with the most part of data-logger on the market.

Litmeter MODBUS is born from the Sunmeter experience and it is like its simplification. Litemeter is less-precision of sunmeter and it is perfect for the monitoring of small and medium photovoltaic system.
The output signal is only digital. Litemeter is equipped with a temperature sensor input for photovoltaic modules. It’s a tool of great potential, essential for a good monitoring and management of your system.

Calibrated by stabilized silicon Reference Cell referenced by Fraunhofer Institute (DE).

Key Features:

  • Monocrystalline silicon cell
  • RS485 Modbus RTU standard protocol port to ensure the readings even at 500m from data logger
  • High resistance to the atmospheric agents
  • Complies with IEC EN 61215 par.10,11,12 – (aging)
  • Easy installation
  • Anodized aluminum case
  • Low cost
LITEMETER LM2-485-Modbus RTU
TYPE OF PRODUCTCOST EFFECTIVE Digital SolarimeterLITEMETER LM2-485-Modbus RTU
REFERENCE STANDARDIEC 60904-2; 60904-4; 60904-10
OUTPUTDigital: Irr. and Temp.
CalibrationAchieved by adjustment with stabilized Silicon Reference Cell referenced by Fraunhofer ISE Institute (DE).
Range di inputIrradiation0 ÷ 1250 W/m2
Spectral range0,36 μm ÷ 1,14μm
Temperature-30 ÷ 90 °C
OutputIrradiation - digital RS485 standard Modbus RTU0 – 1250 W/m2 not compensated in temp.
Temperature – digital RS485 standard Modbus RTU-30 ÷ +90°C (1)
Output precisionIrradiation±5%
Temperature±1,5 °C
Power supplyExternal12 ÷ 30 V dc
Operating temp.-30°C ÷ +80°C
EncapsulationTransparent UV resistant Resin (see IEC 60904-2)
CaseAluminum with screw-clamp to fasten on modules or montage profile
Cable3 m shielded cable Ø 5.7 mm, UV and high temperature resistant.
ConnectorsStandard M8 4 pin or not present (4+1 pin)
Dimensions50x90x15 mm

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