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CO₂ sensor Forum Discussions

h_nakamura
Level 4
Level 4
5 solutions authored 50 replies posted 100 sign-ins

Hello,

Hello,
Regarding "AN_2011_PL38_2011_134235", the initialization sequence is bellow.

h_nakamura_0-1669797270928.png

 

But I'd like no to power on 12V for low power consumption during accessing the registers via I2C when the PAS CO2 doesn't measure CO2.
Is it no problem to access the registers via I2C on only 3.3V power on?
I heard that 12V is for only IR heater then I think no problem...

Best regards,
h_nakamura

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1 Solution
GeorgeT
Moderator
Moderator
Moderator
50 solutions authored 25 likes received 5 likes given

Hi @h_nakamura ,

Yes, you are correct.

12 V can be turned off when the sensor is not measuring the CO2 concentration.

Thanks and regards,

George

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GeorgeT
Moderator
Moderator
Moderator
50 solutions authored 25 likes received 5 likes given

Hi @h_nakamura ,

Yes, you are correct.

12 V can be turned off when the sensor is not measuring the CO2 concentration.

Thanks and regards,

George