CuriousRambler
Contributor
I thought that while it does not need to change He sensors, you still need to change the O2 sensor ?
You're correct. Page 20 of the Solo manual:
11.2 Oxygen sensor replacement
The oxygen sensor has a limited service life The analyzer automatically checks the
sensor’s condition and, at the end of its life, the message “Oxygen sensor expired” is displayed upon activating the instrument.