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Koffee Kosmo

01/12/2021 6:15 PM

@Nomad As a general rule Roasting should not exceed 20 min to second crack You are describing is baking

Nomad_echo

12/31/2020 2:39 PM

I trying another 2 cups at 200 for 45 min

Nomad_echo

12/31/2020 2:38 PM

I have a questions.. im trying to experiment with riasting.. i roasted 3 cup of nicaraguan at 200 degrees for 1 hr and 30 min.. is that to long?

snwcmpr

12/17/2020 11:16 AM

Snow again in NC.

allenb

12/13/2020 3:51 PM

I didn't realize snow was forecasted for this neck of the woods

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Homeroasters - Home Roasting Coffee Community » BUILDING A ROASTER » Fluidbed Roaster

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Air flow meter
snwcmpr	#1 Posted on 02/08/2017 8:17 AM
1 1/2 Pounder Posts: 909 Joined: March 03, 2011 Location: Western NC	Any one use, and/or know where to get a reasonably priced air flow meter to attach to the intake of the blower for a permanent reading of CFM? -------------- Backwoods Roaster "I wish I could taste as well as I wish I could roast." As Abraham Lincoln said "Do not trust everything you read on the internet".


coffeeforblood	#2 Posted on 02/08/2017 9:02 AM
Newbie Posts: 45 Joined: July 28, 2015 Location: Cincinnati, OH	I have looked around, but "reasonably priced" is usually the stumbling block. Those things exist, but they are not cheap.


oldgearhead	#3 Posted on 02/08/2017 9:23 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	Flow rate is a factor of air-speed through a known diameter tube. However, it requires a simple calculation to convert air-speed to flow rate. Air-speed (anemometer) meters are inexpensive. ($12 USD). Will your configuration work with an anemometer? No oil on my beans...


renatoa	#4 Posted on 02/08/2017 11:06 AM
Administrator Posts: 1535 Joined: September 30, 2016	Model plane hobby anemometers - $19 - can be used, if max 30m/s is enough airflow: https://hobbyking.com/en_us/turnigy-mini-anemometer-wind-meter.html https://hobbyking.com/en_us/hobbyking-digital-anemometer.html


oldgearhead	#5 Posted on 02/08/2017 11:51 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	..for the conversion and calculations go to: [url]http://www.1728.org/flowrate.htm [/url] Two examples pics : oldgearhead attached the following image: No oil on my beans...


snwcmpr	#6 Posted on 02/11/2017 9:31 AM
1 1/2 Pounder Posts: 909 Joined: March 03, 2011 Location: Western NC	I guess I should clarify. The key word is attach. I don't want to measure the wind. I just want to read the air coming into the fan. It is a vacuum cleaner fan with a hole, I'll have to look, but IIRC about 1 1/4 - 1 1/2 ??? -------------- Backwoods Roaster "I wish I could taste as well as I wish I could roast." As Abraham Lincoln said "Do not trust everything you read on the internet".


oldgearhead	#7 Posted on 02/11/2017 9:37 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	Quote snwcmpr wrote: I guess I should clarify. The key word is attach. I don't want to measure the wind. I just want to read the air coming into the fan. It is a vacuum cleaner fan with a hole, I'll have to look, but IIRC about 1 1/4 - 1 1/2 ??? Then you can forget lower prices and look at the various 'hot wire' units at $165 and up. No oil on my beans...


renatoa	#8 Posted on 02/11/2017 11:02 AM
Administrator Posts: 1535 Joined: September 30, 2016	Why, the hole of anemometers is is in the same ballpark, about 3-4 cm... ?


oldgearhead	#9 Posted on 02/11/2017 1:07 PM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	If you are talking about a vane (prop) anemometer, they come in various size props. 'Hot wire' type use a voltage across a wire to determine many different things air speed and mass flow are two types, but yes 'hot wire' meters tend to have the same size hole cutout for the 'hot wire'.. No oil on my beans...


snwcmpr	#10 Posted on 02/11/2017 2:36 PM
1 1/2 Pounder Posts: 909 Joined: March 03, 2011 Location: Western NC	Thanks I will look. If I see them correctly, the hand held ones, with a vane, when mounted on the roasters fan, would have the display on the back side of my roaster, where I cannot see it. -------------- Backwoods Roaster "I wish I could taste as well as I wish I could roast." As Abraham Lincoln said "Do not trust everything you read on the internet".


oldgearhead	#11 Posted on 02/11/2017 3:20 PM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	There a two basic types the hot wire type for flow, temperature, air speed. and the propeller type for air speed and/or temperature. Either type may be or may not have a way to remote it ($$$). The prop type is the most difficult to remote because it usually requires a mechanical cable but the hot wire ones are electronic wire... No oil on my beans...


snwcmpr	#12 Posted on 02/11/2017 3:30 PM
1 1/2 Pounder Posts: 909 Joined: March 03, 2011 Location: Western NC	That is what I have been seeing so far in my search. They all seem to have telescoping probes. Still searching. -------------- Backwoods Roaster "I wish I could taste as well as I wish I could roast." As Abraham Lincoln said "Do not trust everything you read on the internet".


oldgearhead	#13 Posted on 02/12/2017 5:59 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	I've installed industrial flow transmitters (4-20 ma) by Rosemount, Dwyer, Emerson, Hoffer, and etc. Usually the need is water, but they are available for gas. Very large, expensive, and you need something like a PLC to connect them to... No oil on my beans...


oldgearhead	#14 Posted on 02/12/2017 8:42 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011 Location: Go Colts!	..and here is one of the simple ones. Remember, you must provide a way to read it. A hot wire sensor of this type only reads at the tip. The wand and extension are for reading in like in an air duct. With this type you must know the range you want to read because they are built for a certain range. This one is 0-2000 fpm. My birthday is coming up and this one is perfect for my needs. www.ebay.com/itm/251799655834?_trksid...EBIDX%3AIT Edited by oldgearhead on 02/12/2017 8:47 AM No oil on my beans...


snwcmpr	#15 Posted on 02/12/2017 8:33 PM
1 1/2 Pounder Posts: 909 Joined: March 03, 2011 Location: Western NC	That's cool, but I don't have a way to calibrate or test. -------------- Backwoods Roaster "I wish I could taste as well as I wish I could roast." As Abraham Lincoln said "Do not trust everything you read on the internet".

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