Instrumentation#
Solar tracker with instruments.#
Global horizontal irradiance (GHI)#
The Global horizontal irradiance is measured using an unshaded pyranometer, mounted horizontally on a Kipp & Zonen SOLYS2 tracker.
Start date |
Instrument |
Serial Number |
Sensitivity (μV/W/m2) |
Calibration date |
|---|---|---|---|---|
Kipp & Zonen CM11 |
840487 |
4.98 |
01-03-1984 |
|
Kipp & Zonen CM11 |
840487 |
5.065 |
13-05-2015 |
|
21-06-2018 |
Kipp & Zonen CMP11 |
128767 |
8.14 |
21-06-2018 |
22-02-2021 |
Kipp & Zonen CMP11 |
128767 |
8.02 |
08-02-2021 |
The GHI sensor was moved onto the tracker on 2017-09-06. A ventilator was mounted on the GHI sensor on March 7th, 2024. Pyranometer 128767 was also calibrated in November 2012 (sensitivity: 7.95).
Diffuse horizontal irradiance (DHI)#
The Diffuse horizontal irradiance is measured using a pyranometer shaded by a shadow ball, mounted horizontally on a Kipp & Zonen SOLYS2 tracker.
Start date |
Instrument |
Serial Number |
Sensitivity (μV/W/m2) |
Calibration date |
|---|---|---|---|---|
Primo 2014 |
Kipp & Zonen CMP11 |
128764 |
8.34 |
06-11-2012 |
June 2018 |
Kipp & Zonen CMP11 |
128762 |
8.76 |
21-06-2018 |
04-01-2021 |
Kipp & Zonen CMP11 |
128766 |
8.27 |
11-05-2020 |
28-01-2021 |
Kipp & Zonen CMP11 |
128762 |
8.58 |
15-01-2021 |
A ventilator was mounted on the DHI sensor on March 7th, 2024. Pyranometer 128762 was also calibrated on November 2012 (sensitivity: 8.59).
Direct normal irradiance (DNI)#
The Direct normal irradiance is measured using a pyrheliometer, mounted on a Kipp & Zonen SOLYS2 tracker.
Start date |
Instrument |
Serial Number |
Sensitivity (μV/W/m2) |
Calibration date |
|---|---|---|---|---|
2014 |
Kipp & Zonen CHP1 |
140049 |
7.85 |
28-02-2014 |
2018 |
Kipp & Zonen CHP1 |
140049 |
7.88 |
23-04-2018 |
2021 |
Kipp & Zonen CHP1 |
140049 |
7.87 |
18-01-2021 |
Longwave downward irradiance (LWD)#
The Longwave downward irradiance is measured using a pyrgeometer shaded by a shadow ball, mounted horizontally on a Kipp & Zonen SOLYS2 tracker.
Start date |
Instrument |
Serial Number |
Sensitivity (μV/W/m2) |
Calibration date |
|---|---|---|---|---|
2018 |
Kipp & Zonen CGR4 |
170223 |
10.05 |
17-07-2017 |
Kipp & Zonen CGR4 |
170223 |
8.95 |
02-02-2021 |
Weather station#
From 2015 until the end of March 2025, the following meteorological parameters were measured by a weather transmitter, type WXT520, from the Finnish company Vaisala Oyj:
Air temperature
Relative humidity
Air pressure
Wind speed
Wind direction
Rain intensity
Rain duration
Vaisala WTX520 weather station.#