How does the little indicator on Brita filters work?
It usually has 4 bars, or on some models different colored lights, that count down to when you should replace the filter.
Got into an argument about this earlier, and apparently nobody knows.
It seems like it must either measure how much water gets poured out, or simply how long the pitcher is tipped. Otherwise it's a simple 90 day (or however long) timer that resets when you put in a new filter and push the button. (The digital gauge is not connected to the actual filter in any way.)
I'm on the side saying it's not a basic timer, but somehow measures use.
Does anybody actually know?
I tried this thread on /ck/, but thought you guys might have a better answer.
One anon on /ck/ said he stopped buying filters, and just used it as a regular pitcher, which made me think someone here might be in a similar situation and get the urge to take their's apart.
I'm also in a situation where a few people would be pissed if I did that.
>you can push the button and reset whenever to see for yourself.
doesn't prove anything
op, buy two, leave one full of water but dont pour anything out of it
second one leave it on its side. drill a hole and connect it to water supply so its constantly pouring.
>drill a hole and connect it to water supply so its constantly pouring
While that would be the quickest way to figure it out, it seems like just not using it for a month or two and seeing whether or not the display changes would be the cheaper way to determine whether or not it's just a simple timer.
>trying to conduct an experiment
>no control subject
you disgust me.
at least make a record of times & amount poured during regular usage for the lifetime of a (preferably 3 or 5 actually) filter(s) to compare.
Don't know if they're all the same, but mine has a tilt sensor. The instructions say as much, plus you can here something inside move once you tilt the pitcher. Other than that it just counts the tilts I suppose.
look OP ill help you out since everyone in this thread doesnt have a clue
Ive got one of those they have a little ball bearing inside them that runs a linear track. you can hear it click back and forth if you take the lid off and tilt it like you were pouring water.
it knows how many times u tilted it so it probably counts upto a designated number or something.
This. Someone at Brita probably worked out how many average-sized glasses of water it'd take to kill the filter and programmed it for that many pours. Not like drinking unfiltered water for a few days will kill you.
Depends on model, apparently. The one I had a few years ago was just a timer. Would run down even if nobody was using the thing. The rest I can only assume use a tilt sensor like others have pointed out. No idea if there's any around that are more advanced than that.
If the Brita folk cared a damn about measuring water they'd stick a laser rangefinder plus accelerometer in there and record changes after the water settles. Even Keurig can do crap like that.
So if they don't it means either that they're being cheap or that it doesn't matter. Maybe even both.
Why not measure flow rate through the filter? It stands to reason that a filter will get clogged with whatever it is that it's supposed to be filtering. Only problem is you'd have to account for pressure, but including a pressure sensor is not necessarily beyond the wit of man.
buy more goddamn filters. but only ones that fit this retarded profile. there's no money in the starter kits. all the money is in the replacement filters.
>buying the water purification jew
>listening to the water purification jews water bug that tells you to buy more water jews
Uh... Buying a water filter jug, but not replacing the filters is kinda pointless. Don't buy it at all, if you're that cheap.
In principle, you could refill the used filters (replaced when you notice the "filtered" water tastes like shit) by yourself. It's just activated charcoal.