Last Activity:02-26-2014 2:03 PM
6 Likes on 6 Posts
Posted in thread: Force Transducers to measure Volume on 02-26-2014 at 05:48 PM
The sensor I use compensates for local pressure because it has an inlet that DC biases the
sensors output based on the pressure it reads, so in reality its 2 pressure sensors. 1 to
measure ambient pre...
Posted in thread: PWM pump control on 02-26-2014 at 05:24 PM
I havent seen any data correlating pump power input to flow rate so I cant comment on that. I
suspect, that given the fact that AC motors like to run at a fairly constant RPM, and that the
RPM will ch...
Posted in thread: Force Transducers to measure Volume on 02-25-2014 at 10:27 PM
The problem I see with many of the methods is that the density of the liquid changes (specific
gravity) and thus weight, pressure due to height, even capacitance changes as gravity changes.
On my brew...
Posted in thread: motorized ball valve question on 02-25-2014 at 10:19 PM
Back in the days before they had those 3 way valves I put together a group order for the KLD
ball valves from china, so those are what I use. The OCS guys (brew troller guys) used them for
a little wh...
Posted in thread: PWM pump control on 02-25-2014 at 10:04 PM
I have an automated fly sparge on my system. Its brew troller based and I wrote the code for
brew troller to support it. Sadly the fastest PWM output I could get with the brew troller is
10hz because ...
Posted in thread: What RPM do you run your grain mill at? on 02-27-2013 at 04:27 PM
Torque. Remember that when you put a smaller pulley on the motor and a larger one on the mill
it multiplies your torque. So if you have a 50 inch lbs motor that runs at 300 RPM and you gear
it down so...
Posted in thread: Brewtroller build valves and pump questions? on 12-16-2012 at 03:16 AM
Wow... a post about code I wrote.... I wrote and currently use the PWM pump control on the
steam output. I also wrote the pulsed input pump control for fly sparge, which I also use. If
you PWM control...
Posted in thread: Bottom Drain on Brew Kettle on 01-17-2012 at 10:27 PM
Here have fun:Open Source Control Systems :: Valves
Posted in thread: First AG... classic efficiency is not what I want on 08-14-2011 at 04:52 PM
Reporting back after 8 brew sessions. Swiched to a HEX from a RIMS though the RIMS tube still
heats the hot water for the water side of the HEX, this solved the wort scorching issues and
still lets me...
Posted in thread: Power Frequency of Heating Element on 07-14-2011 at 06:01 PM
They have to lower the voltage as the temp goes up especially if they have old transformers.
Their transformers are oil submerged and as the temperature goes up their permittivity and