SOLAR RADIATION (Global Irradiance) Secondary Standard Pyranometers
Wind direction
Wind direction sensor with analog signal output. All models use a Hall effect encoding system.
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SOLAR RADIATION (Global Irradiance) Secondary Standard Pyranometers
Radiometer for solar irradiance measurement, according to ISO 9060 and WMO No. 8 (Part I, Chapter 7) standards. These sensors are classified as ISO 9060 Secondary Standard. With a total daily uncertainty of only 2% within 0…180° field of view, fast response time, these sensors are ideal for users requiring high-end accuracy and reliability
• Spectrally flat Class A (Secondary Standard) pyranometer. Compliance with IEC 61724-1: 2017
• RVH technology: Recirculating Ventilation and Heating (DPA953.1)
• Measured sensor tilt angle (DPA953.1)
• Calibration traceability to WRR
• Outputs: irradiance in W/m², instrument body temperature , tiltangle, internal humidity, internal pressure and ventilator speed (DPA953.1)
• Ideal instrument in PV plants performance monitoring and meteorological networks
| PN | DPA252 | DPA952 | DPA953.1 |
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| Output | µV | RS485-Modbus 4…20 mA |
RS485-Modbus |
| Ventilation | Not included (Yes, using DPA250) |
Not included (Yes, using DPA250) |
Included |
| Heater | Yes (5 V) | ||
| Tilt measurement | – | – | YES (Acc± 1°) |
| Power supply | – | 7…35 Vdc | 8…30 Vdc |
| Power consumption | – | < 75 x 10-3 W@12 VDC | < 3 W@12 VDC |
| Thermopile sensitivity | 7…25 µV/W/m2 | NA | NA |
| Irradiance range | 0…4000 W/m2 | RS485: -400…4000 W/m2 4…20 mA: 0…1500 W/m2 |
-400…4000 W/m2 |
| Impedance | 40 ± 3 Ω | – | – |
| Response time | 4.5 s | 4.5 s | 3 s |
| Output values | Instant value | Running average value over 4 measurements, refreshed every 0.1 s |
Running average value over 4 measurements, refreshed every 0.1 s |
| Cable | Not included (see Accessories) |
Not included (see Accessories) |
Not included (see Accessories) |
| Output | Irradiance in W/m2 | • Irradiance in W/m2 • Sensor body temperature (digital output only) |
• Irradiance in W/m2 • Sensor body temperature • Sensor internal RH% • Sensor internal Pressure in Pa • Instrument tilt angle • Ventilator speed in RPM • Ventilator current in A • Heater current in A |
| Data logger compatibility |
• M-Log (ELO008) • Alpha-Log (using ALIEM module) • E-Log |
Using 4…20 mA output: • M-Log (ELO008) • Alpha-Log (using ALIEM module) • E-Log |
• M-Log (ELO008) using RS485->232 converter • Alpha-Log • E-Log (using RS485->232 converter) |
Wind direction sensor with analog signal output. All models use a Hall effect encoding system.
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