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Description
The SMP3 is an entry level pyranometer with a completely sealed construction and non-replaceable drying cartridge. The SMP3 features a 64 junction thermopile sensing element with a highly absorptive, and spectrally flat black coating to capture incoming radiation and convert it to an electrical signal. This detector is protected from external influences by a high quality glass dome with is 4mm thick. However, the glass dome will require regularly cleaning to prevent a build-up of dirty, or salt spray in marine environments, which will obscure the sensor.
The SMP3 come with a 0-1V or 4-20mA analogue output and these can be rescaled by the user with the supplied PC software. The units are configured with the 0-1V output set as -200 to 2,000Wm² and the 4-20mA output as a 0-1,600Wm². Negative ranges are provided to allow the sensor to show levels at night when there is heat emitted from the sensor.
All SMP’s have the RS485 Modbus RTU interface, very low power requirements and are supplied with comprehensive, traceable, calibration certificates. Calibrations are traceable to the World Radiometric Reference (WRR) in Davos Switzerland and are performed in accordance with ISO 9847, Annex A.3 ‘Calibration of Field Pyranometers by comparison to a Reference Pyranometer’.
Diagram
Specification
| ISO 9060:2018 Classification | Spectrally Flat Class C |
| Spectral Range | 300 to 2800nm |
| Response Time | <12s |
| Zero Offset A | <15 W/m² |
| Zero Offset B | <5 W/m² |
| Directional Error | <20 W/m² (Up to 80º with 1000 W/m² beam) |
| Temperature Dependence of Sensitivity | <3% (-20 to 50°C) <5% (-40 to 70°C) |
| Analogue Output | -V version: 0-1V -A version: 4-20mA |
| Analogue Output Range | -V version: -200 to 2000W/m² -A version: 0 to 1600W/m² |
| Digital Output | 2 wire RS485 Modbus RTU |
| Digital Output Range | -400 to 2000W/m² |
| Operating Temperature | -40 to +80°C |
| Supply Voltage | 5 to 30vDC |
| Power Consumption (at 12vDC) | -V version: 55mW -A version: 100mW |
| Ingress Protection | IP67 |
SMP3 instruments have an 8-pin socket and can be connected to a standard cable with a pre-wired waterproof 8 pin plug and flying leads. Cable lengths of 10m, 25m, 50m and 100m are available.
Field Data Logger Options
The Meteon 2.0 is a significantly more advanced and versatile data logger than the Meteon, particularly for users working with modern “Smart” Kipp & Zonen pyranometers. It can accept up to 5 Smart pyranometers and one analogue pyranometer, plus one Modbus temperature and a pulse input for kWh values. The Meteon 2.0 can log up to 380,000 sets of min, max and average values. This logger is ideal for those needing to monitor multiple parameters (irradiance, temperature, energy) in PV applications.
If you require a permanent solar panel efficiency monitoring system, please contact us directly to discuss your requirements. We can provide bespoke tailored systems to fit any requirements with loggers suitable for transmitting data via Mobile network, Wi-Fi, Ethernet or even a satellite connection.
