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snwcmpr
12/07/2019 9:29 AM
roar

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11/27/2019 11:04 AM
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11/26/2019 1:35 PM
I got an email that I had a PM. So, that is working for me again. greenman

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How to control a fluidbed roast profile?
tamarian
Done with the charge hopper. Also placed BT probe in the middle of the angled plate, which now allows for as small as 150-200g batches. Tested on consecutive 200g and 700g Brazil YB, PID profile worked identically. Next, a trier.

forum.homeroasters.org/forum/attachments/img-20130415-wa0002.jpg
tamarian attached the following image:
img-20130415-wa0002.jpg

Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
Here's the trier

forum.homeroasters.org/forum/attachments/img-20130422-wa0000.jpg

Goes in here:

forum.homeroasters.org/forum/attachments/img-20130422-wa0001.jpg

It's a tight fit, and it was designed to collect the beans in the upside down position, but turned out to work fine without reversing, as the beans would just fall in. I only reverse it when I want to dump the sample. I guess it's due to blocking the air flow temporarily, so the beans in flight, and those passing from the sides fall into the dead zone created by the trier.
tamarian attached the following images:
img-20130422-wa0000.jpg img-20130422-wa0001.jpg

Edited by tamarian on 04/21/2013 10:56 PM
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
Here are more detailed pics of the door
tamarian attached the following images:
img-20130422-wa0006.jpg img-20130422-wa0011.jpg img-20130422-wa0003.jpg img-20130422-wa0005.jpg

Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
More details on the hopper. This is the 1-1/2 inch tube dumping greens into the RC. Maybe hard to see, but it's cut in angle to minimize chaffe collecting there

forum.homeroasters.org/forum/attachments/img-20130422-wa0004.jpg

The assembly from the valve up come out as one piece with a single twist, no need to be tight, and handy to recover the green when need be

forum.homeroasters.org/forum/attachments/img-20130422-wa0009.jpg
tamarian attached the following images:
img-20130422-wa0004.jpg img-20130422-wa0009.jpg

Edited by tamarian on 04/21/2013 11:06 PM
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
Improved chaffe collector, by wrapping the mesh screen around a few times, use straps instead of tape. The strange thing is that the rubber/plastic cover for the can does not melt, and works fine to empty chaffe.

forum.homeroasters.org/forum/attachments/img-20130422-wa0010.jpg
tamarian attached the following image:
img-20130422-wa0010.jpg

Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
And the whole thing put together

forum.homeroasters.org/forum/attachments/img-20130422-wa0008.jpg


Not too pretty, but very practical, and allows easy back to back roasts without lifting the RC and unhooking the thermocouples.
tamarian attached the following image:
img-20130422-wa0008.jpg

Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
oldgearhead
Awesome!
Now just figure out how to run the roasted beans out as you add green ones through the gate valve and you have a continuous roaster, just like P&G...
No oil on my beans...
 
tamarian
Thanks. What is P&G?
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
oldgearhead
Proctor and Gamble
Big food corp..but I mennt to say GF General Foods/Maxwell House
Edited by oldgearhead on 04/22/2013 8:17 AM
No oil on my beans...
 
tamarian
I didn't like the trier, as I had to pull it a few times to get a big enough sample, so I replaced it with a spout. When I push it in, a stream of beans fall through into a sample cup, pull it back, the stream stops. I numbered sample cups 1-7, with perforated bottoms, and made a cooling tray for the sample cups.

This allows me to use Artisan events, where I press a sample event button each time I pull a sample, and the the Roast/Properties/Events screen will show each sample's time and BT (this was added in Artisan 0.6).
tamarian attached the following images:
img-20130624-wa0003.jpg img-20130624-wa0009.jpg img-20130624-wa0007.jpg img-20130624-wa0004.jpg img-20130624-wa0006.jpg img-20130624-wa0010.jpg

Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
Replaced hopper with a wider mouth cone/colander so it's easier to charge beans without a funnel:
tamarian attached the following image:
img-20130624-wa0001.jpg

Edited by tamarian on 06/24/2013 1:45 AM
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
Now the fun part, convert to gas. The good news, the Clippard modular valve arrived! The bad news, it doesn't seem to work. Tried it on the Fuji PID at 10v, no go. Tried it directly on 9V battery, nothing comes out. Sent a support request to Clippard to see if I'm missing something, or if it's a faulty unit.
tamarian attached the following image:
img-20130526-wa0003.jpg

Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
Dan
Tamarian, Are you sure it is DC? Both leads are solid red, which suggests the coil is AC.
1 pound electric sample roaster, 3 pound direct-flame roaster, both handmade; modified Mazzer Mini grinder, LaSpaziale Vivaldi II automatic espresso machine. When the electricity goes out I make vacpot coffee from beans ground on my Zassenhaus hand grinder, and heat the water with a teakettle on the gas range.
 
http://www.intactamerica.org
oldgearhead
Clippard Modular Valve? I thought all Clippard modular valves:
1) Required either 20 or 40 psi to open, depending on model.
2) Were designed for air only.
3) Are pilot valves not MODULATING valves.
4) Your valve is AC (red wires)

Can you provide the model number, I'm interested in a very small modulating valve (4-20ma)...
No oil on my beans...
 
oldgearhead
Ooops! Sorry, I didn't look at your other thread.
I guess Clippard does make a line of modulating valve called 'EVP'. Is yours the 0-10V DC version?
No oil on my beans...
 
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tamarian
Dan: No, not sure, just know what I ordered :) The order option offered a range of VDC 0-5 or 0-10VDC, the documents online refers to VDC as well: http://www.clippard.com/downloads/PDF_Documents/Product%20Data%20Sheets/EVP_Proportional_Valve_Data_Sheet.pdf

My Fuji PXG4, output2, can send 0-5 / 1-5 / 0-10 / 2-10VDC

OGH: Here's the part number: EV-P-10-25A0 and yes, it's the 0-10V DC, and it supports air and gas, according to docs.

Online support replied with "The EVP is a current based valve, 4-20Ma". and referred me to a distributor, so I re-sending the enquiry to them.
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
Dan
That was my next thought, that it was a 4-20mA device. That's common in sensors and control devices. Does your Fuji have a 4-20mA output option?
1 pound electric sample roaster, 3 pound direct-flame roaster, both handmade; modified Mazzer Mini grinder, LaSpaziale Vivaldi II automatic espresso machine. When the electricity goes out I make vacpot coffee from beans ground on my Zassenhaus hand grinder, and heat the water with a teakettle on the gas range.
 
http://www.intactamerica.org
oldgearhead
I've used a 500 ohm resistor to convert 4-20ma to 2-10 volts,
and 250 ohm resistor to convert to 1-5 volts. However, to go from 2-10V to 4-20ma usually takes a converter..
No oil on my beans...
 
tamarian
Dan wrote:

That was my next thought, that it was a 4-20mA device. That's common in sensors and control devices. Does your Fuji have a 4-20mA output option?


Unfortunately, no. Output 1 SSR, output 2 VDC.

I wish they stated 4-20mA as an input in the ordering option, like Fuji does.
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
tamarian
oldgearhead wrote:

I've used a 500 ohm resistor to convert 4-20ma to 2-10 volts,
and 250 ohm resistor to convert to 1-5 volts. However, to go from 2-10V to 4-20ma usually takes a converter..


Found this one: http://controlsce...fault.aspx
Wa'il. 1 Kg PID'ed gas-fired fluid bed roaster, GS/3MPS, K10F
 
http://english.varietalcafe.com
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