How to check how often is the senor being updated?

Configuration
1

Hello,
I am using PM sensor and I can see the values from the senor are being continuously updated on my dashboard. I want to know how often they are being updated and how can I configure the update interval for this sensor?

I can see the code here https://github.com/home-assistant/home-assistant/blob/master/homeassistant/components/sensor/serial_pm.py but I don’t understand how is the senor being updated?

2

I believe the default update interval is 30 sec. You should be able to change that by using the scan_interval parameter in the platform configuration.

3

thanks, but is it not true that this scan_interval global and will impact all other sensors too?

4

The way I understand it, it’s per platform config. So if you do:

sensor:
  - platform: serial_pm
    ...
    scan_interval:
      seconds: 10

that should only impact that one sensor. FWIW, I do this for one of my sensors.

5

yes, you are right. thanks