Template to convert entity C to °C - help please

1

I want to plot two temperatures on one graph and then probably go on from there to plot only the diffference between the two.
One is a standard °C entity.
The other is coming from Modbus (PMG_TEMP) where they only accept C as the unit of measurement.
I was thinking I could add a template something like below to convert C to °C but this does not seem to work - any ideas please:

      - name: "Turbine Temperature (°C)"
        unit_of_measurement: "°C"
        device_class: "temperature"
        state_class: "measurement"
        state: "{states('sensor.PMG_TEMP')}"
2

Create a template helper like this:

afbeelding
afbeelding572×617 5.55 KB

3

use

unit_of_measurement: ‘°C’

not „“

4

I now have this but is is not working:

Screenshot 2024-09-10 at 08.32.46
Screenshot 2024-09-10 at 08.32.461178×1290 58.3 KB

      - name: "Turbine Temperature (°C)"
        unit_of_measurement: '°C'
        device_class: "temperature"
        state_class: "measurement"
        state: "{{states('sensor.PMG_TEMP') | float(0)}}}"
5

One } too many ?

6

You don’t need a template sensor for this.

Use manual customization. e.g.

configuration.yaml

homeassistant:
  customize: 
    sensor.pmg_temp:
      unit_of_measurement: "°C"

Also the reason your template sensors are not working is because you are using capital letters in your entity id. Entity ids are always lower case.

7

Of course - thank you - now running - excellent
Thanks all!

8

Final yaml:

      - name: "Turbine Temperature (°C)"
        unit_of_measurement: '°C'
        device_class: "temperature"
        state_class: "measurement"
        state: "{{states('sensor.PMG_TEMP') | float(0)}}"
9

As I said, you do not need another entity for this. You can change the unit of the original sensor.