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The SMP3 is a smart pyranometer with low maintenance and industry standard digital and analogue amplified outputs. Based on the proven CMP3 technology the SMP3 adds Modbus interface, improved response time and temperature corrected measurement data.
The wide and low power supply range from 5 to 30 VDC makes integration in meteorological stations easy. The SMP is protected against over voltage, reversed polarity and short circuiting.
Because all SMPs have identical sensitivity and connections, exchanging instruments during recalibration is easy. SmartExplorer Windows for data logging, display of data and Modbus address setting is provided as standard.
SMP3 measures global solar radiation on a horizontal plane. When tilted with the same angle as a PV panel it measures the tilted global radiation for PV module efficiency calculations.
| Non-linearity | 3% (0 to 100 W/m) |
| Non-stability | 1% (change/year) |
| Casing IP Rating | IP67 |
| Spectral accuracy | 300 to 2800 nm |
| Cable Length | 33, 82, 164, 330 ft (10, 25, 50, 100 m) |
| Irradiance saturation | 2000 W/m (Max.) |
| Material enclosures | Aluminum, anodised |
| Temperature Correction | 3 % (-20 to +50 C) |
| Weight EU | 0.7 lb (300 g) |
| Response Time | 1.5 s (63 %), 12 s (95 %) |
| Directional Response | 20 W/m (up to 80 with 1000 W/m beam) |
| Sensitivity | N.A. |
| Analogue Outputs | 0 to 1 V (V-model) or 4 to 20 mA (A-model) |
| Drying Cartridge and Maintenance Interval | Internal, no replacement necessary |
| Operating humidity | 0 to 100 % |
| Zero offset A | 15 W/m |
| Classification | Spectrally Flat Class C (ISO 9060:2018) |
| Operating temp range 1 | -40 to +70 C |
| Zero offset B | 5 W/m |
| Digital outputs | Modbus RTU 2-wire RS-485 |

Price:
Minimum Order Quantity : 1 Piece
Accuracy : ISO Second Class; Calibration uncertainty 1.7%
Application : Solar radiation measurement for meteorological and climatological studies
Display Type : No onboard display (digital output)
Machine Weight : 0.5 kg
Measuring Range : 0 2000 W/m2
Minimum Order Quantity : 1 Unit
Accuracy : <2% (daily total)
Application : Measurement of solar irradiance
Display Type : External (data acquisition or readout not included)
Machine Weight : 500 g
Measuring Range : 0 2000 W/m2
Minimum Order Quantity : 1 Piece
Accuracy : <1% (ISO 9060:2018 Class A, Secondary Standard)
Application : Solar irradiance measurement, meteorology, photovoltaics
Display Type : None (Signal output)
Machine Weight : 0.5 kg
Measuring Range : 0 to 4000 W/m2
Minimum Order Quantity : 1 Piece
Accuracy : ISO 9060 Secondary Standard (highest class)
Application : Solar radiation measurement, meteorological and climatological studies
Display Type : External data logger required
Machine Weight : 2.1 kg
Measuring Range : 0 to 4000 W/m2