[Barrow4491]

Before anything else, please check your user configurable settings on both TX and RX software.

TX

Code:

// --------------------------------------------------------------------------------------
//   Define which data this unit will send. 0 = Not send this data, 1= Send this data
// --------------------------------------------------------------------------------------
...
#define ID4  1  // SolRad / UV data
...

RX
Suposing Solar/UV interface is connected to TX unit0

Code:

// --------------------------------------------------------------------------------------
//   Define the source of your main outside sensors
// --------------------------------------------------------------------------------------
...
// ---- Define the source of your main Solar / UV sensores
#define SRUV_OutUnit     0   // 0= Solar Rad / UV sensors connected to TX_Unit 0, 1= for TX_Unit1, ..., 9 for not used
// ---- Define type of Solar Radiation / UV Sensors
// ---- Support for sensor type 4 its experimental (type 4 its a PAR sensor)
#define Solar_Sensor     2   // 0 not used, 1= Solar Cell "Pyranometer", 2= Apogee SP-110 Pyranometer, 3= Reserved, 4= Apogee SQ-110: Photosynthetically Active Radiation Sensor

...

Werk,
I haven't defined the type of solar sensor in the Rx left it as 1 instead of 2. I have changed it and will check for data tomorrow when the sun is up
Thanks

[werk_ag]

Hi Jim,

There are some other things you need to check:

- Depending on the version, your Solar/UV interface may have an 1 Ohm resistor on the board. If this resistor is present, for the Apogee pyranometer, it should be removed.
- Adjust the variable resistor to 4900 Ohm.
- On the RX software find this code:

Code:

#if (Solar_Sensor == 2)

Change the line bellow to this:

Code:

SolarRad = map(RX_Data[2], 0, 1023, 0, 1450);              // Using OP - Formula outputs an integer, between 0 and 1450 W/m2

These settings worked fine for me, they should give good results for you too.

[Barrow4491]

Hi Jim,

There are some other things you need to check:

- Depending on the version, your Solar/UV interface may have an 1 Ohm resistor on the board. If this resistor is present, for the Apogee pyranometer, it should be removed.
- Adjust the variable resistor to 4900 Ohm.
- On the RX software find this code:

Code:

#if (Solar_Sensor == 2)

Change the line bellow to this:

Code:

       SolarRad = map(RX_Data[2], 0, 1023, 0, 1450);              // Using OP - Formula outputs an integer, between 0 and 1450 W/m2

These settings worked fine for me, they should give good results for you too.

Werk,
My board has the 1 ohm resistor and i will remove it shortly.I have searched for the code line you indicated but cannot find it, could you indicate which section of the Rx software is it in 
Thanks
JIm

[werk_ag]

Hi Jim,

The 1 Ohm resistor (shunt resistor) is only needed with the "Solar Cell" pyranometer. Remove it as soon as possible.
Click on "Search on all Sketch Tabs" and you will find that piece of the code.

[danner]

Hi Jim,

There are some other things you need to check:

- Depending on the version, your Solar/UV interface may have an 1 Ohm resistor on the board. If this resistor is present, for the Apogee pyranometer, it should be removed.
- Adjust the variable resistor to 4900 Ohm.
- On the RX software find this code:

Code:

#if (Solar_Sensor == 2)

Change the line bellow to this:

Code:

       SolarRad = map(RX_Data[2], 0, 1023, 0, 1450);              // Using OP - Formula outputs an integer, between 0 and 1450 W/m2

These settings worked fine for me, they should give good results for you too.

Are these new settings? The pot on my board is adjusted to 4.7k ohms.

[werk_ag]

Are these new settings? The pot on my board is adjusted to 4.7k ohms.

Those are just the settings that work better for me. I gave them to Jim, as a starting point.
If yours is working well, left it as it is.

[Barrow4491]

Are these new settings? The pot on my board is adjusted to 4.7k ohms.

Those are just the settings that work better for me. I gave them to Jim, as a starting point.
If yours is working well, left it as it is.

Werk,
All working now thanks: I have a diary note to change these settings in future Rx software upgrades. Now I am going to design a new housing for my UVM30A sensor.
Regards
Jim

[werk_ag]

Werk,
All working now thanks: I have a diary note to change these settings in future Rx software upgrades. Now I am going to design a new housing for my UVM30A sensor.
Regards
Jim

Taking note of any personal changes on the software is a good pratice. However, regarding this matter, possibly any new software release will keep those values by default. They may not be the best for everyone, but are a good starting point.

[zitoune]

Hello Werk,

I just happen to read this thread - very interesting to run some comparison. I will surely follow that path too.

Apogee also provides a UV sensor, the SU-100, I am sure you have seen. It is not clear in the data sheet if the UV index is linear with the output, but if it is, it would be interesting to run also the same type of comparison with our UV sensor.



I am curious to know if you have considered it?

Thanks and regards,
Zitoune

[werk_ag]

Hi Zitoune

The Apogee SU-100 sensor does not directly output an UV index value. "The sensor incorporates a photodiode that measures combined UVA and UVB radiation." Without more information about the relation between UVA and UVB on the output sensor, I think that will not be easy to compute the UV Index.

There is also another interesting note: "... sensor is not recommended for long-term continuous outdoor deployment"

Regards