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Measuring Solar Radiation based on Photovoltaic Cells

Hi There,

Cool thread!
I am about to assemble my meter for a university thesis project, but I have some doubts about Rsh.
My highest reading of my solar panel (from a ALDI garden light) in Portugal over the last 3 days was today, with Isc = 72 mA.
If I look back at what Werk_AG did in the beginning, he said this would approximately refer to 1300 W/m2. Since I am also in PT, this would result in 1.81 ohm for my Rsh to get a voltage drop of 1mV per 10 W/m2.

However, this is a very rough approximation since I have no clue if at the measured second the value actually refered to 1300 W/m2. Personally, I think it more likely refered to 1400 W/m2, as according to ALDI the panel is a 50mA panel. Considering that ALDI uses the standard of 1000W/m2 at 25°C for this value, 72 mA would correspond to 1440 W/m2, not taking into account temperature deviations. This would result in a Rsh of 2 Ohm.

Now, nevertheless what I take for my Rsh, Werk_AG, wrote that later, one would be able to see if this value made sense and actually calibrate the meter to better match the real Irradiance.

My question is, how to calibrate the meter afterwards as the resistor cannot be changed? Would you change the relationship of 1 mV to 10 W/m2? 

Thanks heaps for your help and sorry if this has been answered somewhere but I cannot find it

Axel
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Messages In This Thread
Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:37
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by fehmi - 04-02-2016, 21:21
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 05-02-2016, 02:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:41
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 08-09-2014, 20:30
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 09-09-2014, 11:24
RE: Measuring Solar Radiation based on Photovoltaic Cells - by water01 - 09-09-2014, 00:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 09-09-2014, 03:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 09-09-2014, 15:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by water01 - 09-09-2014, 20:17
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 09-09-2014, 22:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by water01 - 09-09-2014, 23:15
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 10-09-2014, 00:45
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 12-01-2015, 13:50
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 14-01-2015, 20:15
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Brett - 13-01-2015, 12:09
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 13-01-2015, 12:42
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Brett - 24-01-2015, 23:09
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 24-01-2015, 23:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Brett - 25-01-2015, 08:51
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 25-01-2015, 19:42
RE: Measuring Solar Radiation based on Photovoltaic Cells - by tyntop - 02-02-2015, 23:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-02-2015, 03:27
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 01-04-2015, 17:06
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-04-2015, 03:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by strkomis - 29-05-2015, 08:20
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 29-05-2015, 10:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 29-05-2015, 18:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 02-06-2015, 11:22
ideas to improve the measuring of solar radiation - by hvalentim - 03-06-2015, 11:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-06-2015, 11:50
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 03-06-2015, 13:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-06-2015, 17:33
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 05-06-2015, 15:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 11-06-2015, 04:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 11-06-2015, 18:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by tyntop - 11-06-2015, 19:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 11-06-2015, 19:47
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 11-06-2015, 20:17
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-06-2015, 00:44
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 12-06-2015, 06:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-06-2015, 13:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 12-06-2015, 17:43
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-06-2015, 00:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 16-06-2015, 11:08
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 13-06-2015, 01:02
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 13-06-2015, 00:49
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-06-2015, 00:56
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-06-2015, 11:11
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 14-06-2015, 02:41
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 16-06-2015, 23:53
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 13-06-2015, 14:19
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 16-06-2015, 15:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 16-06-2015, 16:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 16-06-2015, 17:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 17-06-2015, 02:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 30-06-2015, 18:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 30-06-2015, 21:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 12-07-2015, 11:30
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-07-2015, 15:19
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 12-07-2015, 16:43
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 12-07-2015, 23:31
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 18-07-2015, 02:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 16-07-2015, 14:19
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 18-07-2015, 03:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-07-2015, 15:32
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-08-2015, 02:47
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 18-07-2015, 15:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-07-2015, 15:59
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 19-07-2015, 10:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 19-07-2015, 17:57
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 20-07-2015, 10:49
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 20-07-2015, 11:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 20-07-2015, 11:17
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 21-07-2015, 16:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 24-07-2015, 02:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 25-07-2015, 15:44
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 02-08-2015, 14:27
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 02-08-2015, 15:42
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 02-08-2015, 17:30
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 03-08-2015, 17:22
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 03-08-2015, 04:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-08-2015, 22:53
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-08-2015, 12:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 03-08-2015, 13:47
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 08-08-2015, 07:39
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 08-08-2015, 15:21
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 09-08-2015, 14:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by strada916 - 12-08-2015, 14:23
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 12-08-2015, 14:45
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-08-2015, 16:20
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 12-08-2015, 19:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 13-08-2015, 09:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-08-2015, 15:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 19-08-2015, 00:53
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 19-08-2015, 16:51
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 29-08-2015, 04:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 05-09-2015, 09:12
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 06-09-2015, 16:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 22-01-2016, 14:11
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 23-01-2016, 13:51
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 23-01-2016, 17:39
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllanG - 23-01-2016, 17:56
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 24-01-2016, 10:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 24-01-2016, 11:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 30-01-2016, 11:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 30-01-2016, 21:39
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 12-02-2016, 00:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 13-02-2016, 21:10
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 13-02-2016, 22:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 14-02-2016, 00:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 14-02-2016, 16:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by meteobreda - 04-04-2016, 16:20
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 07-04-2016, 11:21
RE: Measuring Solar Radiation based on Photovoltaic Cells - by meteobreda - 07-04-2016, 21:15
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 07-04-2016, 22:06
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 17-08-2016, 16:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 18-08-2016, 09:58
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-08-2016, 10:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 18-08-2016, 11:12
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-08-2016, 23:29
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 26-06-2017, 20:58
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 00:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 27-08-2017, 09:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 27-08-2017, 11:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 27-08-2017, 20:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 27-08-2017, 00:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 02:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 27-08-2017, 20:04
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 23:09
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 23:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 23:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 28-08-2017, 00:59
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 28-08-2017, 14:33
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 28-08-2017, 17:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 30-08-2017, 02:02
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 31-08-2017, 11:00
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 31-08-2017, 04:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 31-08-2017, 15:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 31-08-2017, 22:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 01-09-2017, 00:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 01-12-2017, 20:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by f4aii - 01-12-2017, 07:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 01-12-2017, 11:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by f4aii - 01-12-2017, 13:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 01-12-2017, 21:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 19-07-2019, 14:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 19-07-2019, 16:11
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 19-07-2019, 16:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 19-07-2019, 22:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 22-07-2019, 12:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 26-07-2019, 10:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 27-07-2019, 15:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 29-07-2019, 11:29
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 26-07-2019, 13:43
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 26-07-2019, 16:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by HF_ATL - 18-08-2019, 21:37
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-08-2019, 22:56
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 20-08-2019, 01:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 18-08-2019, 22:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by SSHEEHY - 07-03-2021, 20:27
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 08-03-2021, 00:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by HF_ATL - 18-08-2019, 23:37
RE: Measuring Solar Radiation based on Photovoltaic Cells - by HF_ATL - 20-08-2019, 08:57
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 08-03-2021, 05:46



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