Conductivity value is missing in Mqtt

[15svenBringezu]

Hi,

I’m using NeoPool with a Bayrol Salt Relax Pro connected via RS485.
Communication, pH, Redox and Hydrolysis all work fine and I see this in the MQTT payload:

"Modules": {
"pH": 1,
"Redox": 1,
"Hydrolysis": 1,
"Chlorine": 0,
"Conductivity": 0,
"Ionization": 0
}

However, the Salt Relax Pro itself is able to measure salt level / conductivity, but I don’t see any salt / conductivity value in the NeoPool JSON or MQTT (only the fields shown above).

My questions:
1. Is conductivity / salt level currently supported by NeoPool for Bayrol Salt Relax Pro?
2. If yes, what configuration is needed so that Modules.Conductivity becomes 1 and the conductivity/salt value is exposed in the NeoPool JSON/MQTT?
3. If not, is this something that could be added (e.g. by reading the corresponding Modbus registers), and what information would you need from my device (firmware version, Modbus logs, etc.)?

Thanks a lot for your help!

[curzon01]

The salt level can only be measured indirectly via conductivity. The less accurate this conductivity measurement is, the less accurate the result will be.

1. Is conductivity / salt level currently supported by NeoPool for Bayrol Salt Relax Pro?

Yes, but only if the conductivity probe (quite expensive) is installed.

Sugar Valley systems have two options for measuring conductivity/salt level:

1. Using a special extra conductivity sensor - but that only gives you the conductivity value; it is not converted into salt level.
2. Using the salt electrolysis cell. This type of measurement
   a) is not very accurate, as it depends among other things also on the age and quality of the cell and
   b) does not take place continuously, it is only taken once when it is activated in the “Salt content measurement” menu.

2. If yes, what configuration is needed so that Modules.Conductivity becomes 1 and the conductivity/salt value is exposed in the NeoPool JSON/MQTT?

Yes, as soon as "Modules.Conductivity" = 1. This is only the case if you have purchased and installed the conductivity kit.
The built-in method of measurement via the cell does not allow this.

3. If not, is this something that could be added (e.g. by reading the corresponding Modbus registers), and what information would you need from my device (firmware version, Modbus logs, etc.)?

No, that's exactly what the conductivity kit is needed for.