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+--- Thread: Question on the Hybernite Rainout control tube (/Thread-Question-on-the-Hybernite-Rainout-control-tube)
Question on the Hybernite Rainout control tube - runcyclexcski - 03-19-2024
Hi all --
In case anyone here uses the Hybernite Rainout control system (a standalone tube with a heater in it), do you happen to know if it runs a feedback loop that maintains the tube at a setpoint (e.g. 37C), or is it an "always on" heater? It is not clear from pictures online whether the ACDC brick just has 2 leads for 12V/2A, or if it has an additional lead for a sensor (the latter would indicate that is runs a feedback loop). If the Hybernite Rainout does not have thermostat, are there standalone tubes on the market that do?
Thank you in advance!
RE: Question on the Hybernite Rainout control tube - big_dave - 03-19-2024
I used to use the Hybernite years ago, when I was using the Resmed S8 Autoset II. It is either on or off, with no temperature control. I only used it the cold half of the year, and switched to standard tubing the warm half of the year. I've read reports of people connecting it to a rheostat to lower the heat, but I never tried it.
RE: Question on the Hybernite Rainout control tube - runcyclexcski - 03-21-2024
Many thanks, big_dave! I also found from a blogpost that the ResMed heated tube has 4 pins two of which are for a 10kOhm thermistor and the other two are for power. Thus, it should be possible to make a PID loop with that one, in principle.