STC-1000+ programming for dual sensors

[IDoBleedBrew]

I purchased a STC-1000+ setup with dual sensors. I've got a temperature profile ready for a Munich Helles, but I'm not quite sure how to adjust the setup to take advantage of the second sensor. I'll have the first sensor in a thermowell right in the middle of my beer, and the second sensor will be reading the fridge temp. How does one go about programming the STC-1000+ to take advantage of the second sensor so as to avoid overshooting the fridge temps? I've seen plenty of examples to setup a profile for a single sensor, but I haven't seen much that describes setups for dual sensors. Can someone point me in the right direction? Thanks!

 

[alphaomega]

Hi!
I'm interested in this as well If anyone has any stories to share, that'd be cool.
So first off, setting up 2nd probe is power user stuff. I would recommend *not* enabling 2nd probe to begin with. Single probe works nice enough and should offer less surprises.
Then I imagine, to properly setup 2nd probe, you should log beer and fridge temp for a (few?) typical fermentations (with single probe), to get an idea of how much fridge temp over/undershoots setpoint temperature, and get an idea for a reasonable hy2 value.
Or you could try to monitor the temperatures manually for a while and/or just guesstimate and tweak it as you go along until it seems to perform as you want it to.
I don't think there is a quick and easy procedure or 'good default' as it will depend on your overall setup.
Hopefully, someone who's actually done it (I haven't, and I wrote it) can chime in with their experience and recommendations.

 

[IDoBleedBrew]

I have read lots about single-sensor setups but I haven't seen much (especially from a documentation or how-to standpoint) for dual sensors.

 

[IDoBleedBrew]

Well let me try another question. Let's say I start out with an hy2 of 8. If I realize during the running of the profile that I'm overshooting by 2 degrees during cooling and I want to change the hy2 from 8 to something like 6.5 and see how that affects it. Am I able to go in and update hy2 while the profile is running without it messing up and having to restart the profile? Will it continue with the current profile where it left off before I updated the hy2? Thanks for all the help!

 

[alphaomega]

Yes, changing hy2 'on the fly' should have effect (but it might not update until next heating/cooling cycle, I don't remember...). And it won't affect the currently running profile (that is the, profile will continue running as normal). So, it would be 'safe' to 'fiddle' with hy2

 

[IDoBleedBrew]

Thank you. I appreciate it.