Tilt Hydrometer

Discussion in 'General Home Brew Equipment Discussion' started by Braufather, Jun 26, 2018.

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  1. Jul 12, 2019 at 7:07 PM #21

    BarryC

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    Sorry Peebee didn't mean to hi-jack your work - just thought it might be useful for Crappyfish to read your comments - Humble Apologies !
     
  2. Jul 12, 2019 at 7:19 PM #22

    kelper

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    To Crappyfish

    Someone has bought you a present that probably cost them £140! I'm sorry you are not impressed. What is it that you don't like? It does not tell you ABV directly, it only measures temperature and density (Specific Gravity). The ABV is calculated by the same method all beer brewers use - original gravity minus final gravity multiplied by 1.3125. Can you put it on eBay? You would probably get £80.
     
  3. Jul 12, 2019 at 7:20 PM #23

    peebee

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    Good grief, nothing to apologise for! I'm sort of pleased that I haven't been tempted to link it 'cos that would have been a bit presumptuous of me (and I'm terrified of enraging the administrators … although I have been told before, they really are not so sensitive to such "cross-platform posting").


    (EDIT: I think @Crappyfish is taking your suggestion to read my comments so I don't think we'll hear from him for a bit: He'll be half the night trying to read that mammoth thread!).
     
    Last edited: Jul 12, 2019 at 7:35 PM
  4. Jul 12, 2019 at 8:43 PM #24

    peebee

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    Here go. May as well "spread the load" across forums. This extraordinarily sedate fermentation has already finished (1.009 this morning) and I'm assuming the Tilt is catching up as the load of yeast "falls off" the Tilt. Perhaps?

    The major "sticking point" was about SG1.025 (4 days ago) and the Tilt is only recovering from that now. Perhaps?

    So it's not perfect, but it is a convenience. I'd never have had this information available to me before. The "errors" shouldn't affect the finished beer and as I know they are there …

    Fferna3.1.JPG Fferna3.2.JPG
     
  5. Jul 13, 2019 at 7:03 AM #25

    kelper

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    It's not finished fermenting until the SG plateaus. Mines at 1.007 after 12 days and I think it will drop at least one more point. Yours looks entirely normal. I sometimes remove clean and put back the Tilt after the krausen has diminished. Is it a low temp yeast? Mine is at 19 or 20.
     
  6. Jul 13, 2019 at 11:56 AM #26

    Crappyfish

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    Update on the tilt issue. Just tried it with a pi which seems better than the app. In the android app is a calibration setting which seemed to have upset the readings. I would like to thank all for their help and I will now use the pi and the only way to find out if it's better is to make another brew . Damn shame that
     
  7. Jul 13, 2019 at 12:45 PM #27

    kelper

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  8. Jul 13, 2019 at 1:02 PM #28

    peebee

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    Removing the Tilt to clean it seems like a good plan. Unfortunately it can't work for me because the beer is sealed in a conical fermenter and I'd prefer not to disturb it until I'm casking/kegging.

    I was a bit premature suggesting the SG recorded by the Tilt will catch up with that recorded by Refractometer. The SG (recorded by Tilt) actually went up over-night. I don't expect that the yeast cap will subside much before it gets kegged. This fermentation was carried out a 17-18C. The trace certainly isn't "normal" but has lost a lot in shrinking it down: Notice there is a period of over 12 hours on 7/7/19 where the trace goes nowhere (the Tilt is stuck about 1.025, it also got stuck about 1.032 for a few hours). The Tilt never really regained the 4 SG points that it fell behind at that point.

    The Tilt is not precision tool. But do we need a precision tool? I think you can easily adapt your ways to fit with the Tilt's idiosyncrasies, and people who habitually use relatively light top-cropping yeasts probably wont know what the fuss is about.

    The "TiltPi" certainly is a good choice. So easy to set up, so cheap! If nothing else the TiltPi has been an invaluable introduction to the world of "Raspberry Pi".
     
  9. Jul 13, 2019 at 1:16 PM #29

    peebee

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    Just shows; your Tilt has hesitated for an entire day on 3/7/19, yet you haven't raised an eyebrow. Obviously no sign of this causing it to over-read on subsequent days. I'm probably just a bit sensitive, normally my fermentations are done in 1-1/2 to 3 days and I think it's these fast fermentations that show up a Tilt's bad points.
     
  10. Jul 13, 2019 at 2:31 PM #30

    kelper

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    I've certainly seen the SG go haywire during the first 24-36 hours, sometimes it goes high and sometimes low but quickly settles down. My guess is that the tilt is more accurate than a refractometer. It actually measures density directly whereas the refractometer measure refractive index and then you have to make assumptions about sugar versus alcohol content. These must be variables as it depends on how many sugars are fermentable. When I cross check with a hydrometer the Tilt is very close if it's reasonably clean/free of crud - within 2 points.
     
  11. Jul 13, 2019 at 2:46 PM #31

    kelper

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    I did worry a bit! but it sorts itself out. This is the first brew where I have not cleaned the Tilt. I'll clean the Tilt on Monday and pop it back in before I siphon into a PB just to cross-check with hydrometer for FG.
     
  12. Jul 15, 2019 at 9:28 AM #32

    kelper

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    SG is still dropping, on day 14!
     
  13. Jul 15, 2019 at 1:32 PM #33

    peebee

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    Mines day 10 (usually casked by this time) and the Tilt is reading 1.011. The refractometer is reading 1.008 (it was 1.009 three days ago). My earlier optimism that the two readings would converge was a bit of wishful thinking.

    But I'm figuring a work around. It is easy to see the Tilt hesitate and I know in my setup (closed in a conical fermenter) it won't recover the points "lost" during the hesitation (if it is yeast causing it, the yeast is well stuck on the Tilt and won't be sliding off). So I can drop in three 'on-the-fly' calibration points (one to terminate the previous calibration followed by a pair to setup the new, temporary, calibration that allows for the new over-read). I wouldn't need this "fix" if it was practical to remove and clean the Tilt. I do need to remember to remove the on-the-fly calibration before kicking off a new brew.

    More mucking about, but to put this into context: Decide to make hydrometer readings easier by floating a hydrometer in the beer and leaving it there. Nope, that's not going to work - at all!
     
  14. Jul 15, 2019 at 2:04 PM #34

    Crappyfish

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    That's what screwed mine up the calibrations were old so all the time it was reading the old calibrations if you don't remove them it won't work the Android app seems a bit poor compared to the pi which is set it and forget it apparently. I think the tilt is a expensive gadget and not much more until confidence is gained with it. My brother swears by his but still checks the final gravity with a hydrometer.
     
  15. Jul 17, 2019 at 4:07 PM #35

    Tim2100

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    I have one, and find it fantastic. Great to indicate the progress of my fermentation. without disturbing or taking liquid out.
    The app enables you to upload the temperature and SG up-to brewfather or similar.

    Word of note is that the device doesn't store readings and you need to have the app open on your phone to get data. You can get round this by either having a phone with the screen on permanently or a tablet, or a tilt-pi.

    I have my fermentor sat in a fridge and then a tilt-pi on the other side of the room uploading readings every 15 mins.
     

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