Biopowered - vegetable oil and biodiesel forum
Biodiesel => Biodiesel equipment => Topic started by: Julian on February 07, 2013, 06:11:29 PM
-
I've been trying one of these for a hot pan test, now I've been banned from the kitchen.
(http://www.palmergroup.co.uk/Bio/HPT solder pot view.JPG)
(http://www.palmergroup.co.uk/Bio/HPT solder pot in use.JPG)
It works quite well, but despite the advert saying that it was controllable down to 100°C, it goes way over temperature.
I could rig up a temperature controller or even a PID, but that rather seen overkill!
Can anyone with a better understanding of electronics than me suggest any modifications to get it to run at a lower temperature.
Additional photos as required.
(http://www.palmergroup.co.uk/Bio/HPT solder pot back off.JPG)
(http://www.palmergroup.co.uk/Bio/HPT solder pot inside.JPG)
-
I'm sure one of our experts could find a simple way to achieve that.
However, the 'burning' question is how and why did they pick that name!?
It looks to be made by Ningnang, so the obvious model name would have been the 'Nong'.
-
this reminds me off this!
https://www.youtube.com/watch?v=OJWOtL-PZiE
-
Gangnam style
8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8)
-
On the subject of HPT I know we have to advise using the safe method but surely putting oil in a cold pan then heating would allow a lot of moisture to evaporate before reaching "spitting" temp, giving a false reading
-
i just fell off me chair
MUHHAHAHHAAAAAAA
---------------
anyway back to film "the brave one"
latorz gatorz
-
On the subject of HPT I know we have to advise using the safe method but surely putting oil in a cold pan then heating would allow a lot of moisture to evaporate before reaching "spitting" temp, giving a false reading
As far as the wiki is concerned I'd say we should advocate carrying out all methods safely ... unless items/methods are proved to be positively dangerous.
However, I think you could have a point about the evaporation ... so what if I put a cold glass slide over my little solder pot and checked for condensing water? I'd guess that might be more sensitive that a HPT. Similarly would that be a plausible test for Methanol in Bio?
Somewhere I have a small sample of 10 or 12mm thick glass, got to be worth a try.
-
It's not obvious how the control system on that works - are there any markings on the TO220 device? (The sticky out one with three legs!)
-
I used to have a spoon that I put in a vice and heat up with a blow torch, then use a syringe to pour in a bit of oil. I used to over do it with heat and get spitting regardless of moisture content! I then just heated the spoon (sometimes to dull red!) and then insert into sample jar! hot oil would some times splash about, but you could see steam rising. ;D
I think I will do a wiki page hahaha :P
-
Trust the resident Iranian to come up with the most dangerous way of testing for wet oil known to mankind ;D 8)
-
Trust the resident Iranian to come up with the most dangerous way of testing for wet oil known to mankind ;D 8)
Remember that I am not just an Iranian, I am PROFESSIONAL Iranian! I fart in the face of health and safety!
I used to make bio in what used to be a mechanics/car wash. I was generally the only person around, I used to light my cigars with the same Mapp gas torch!
Off to do a wiki page on doming the top of your processor using the power of browned underpants! ;D ;D ;D
-
It's son of Biohazard.
-
It's not obvious how the control system on that works - are there any markings on the TO220 device? (The sticky out one with three legs!)
I'll have a look tomorrow.
-
Thinking about the general inexpense that seems to be afforded to your device I suspect it's a triac circuit - same as used in lighting dimmer switches - in which case you're at the mercy of the capacitor regarding it's accuracy, of which there will be little!
-
Trust the resident Iranian to come up with the most dangerous way of testing for wet oil known to mankind ;D 8)
Remember that I am not just an Iranian, I am PROFESSIONAL Iranian! I fart in the face of health and safety!
I used to make bio in what used to be a mechanics/car wash. I was generally the only person around, I used to light my cigars with the same Mapp gas torch!
Off to do a wiki page on doming the top of your processor using the power of browned underpants! ;D ;D ;D
I always knew this one would be trouble ;)
-
It's son of Biohazard.
I strongly suspect that I am older than he/she so your suggestion is not possible! ;D
Back to your oil scalding device, I suspect its the pot that controls the heat. I remember I had a soldering iron with a similar set up.
-
Back to your oil scalding device, I suspect its the pot that controls the heat. I remember I had a soldering iron with a similar set up.
I've never seen a soldering iron with a pot on it and believe me I've seen more different types of soldering irons than you can shake a stick at.
-
I meant the circuitry....... :o
When is the nurse coming round with your appy pills? :P
-
When is the nurse coming round with your appy pills? :P
Probably after his sexual harassment hearing ;)
-
Probably after his sexual harassment hearing ;)
That wouldn't happen, I'm important.
-
Back to your oil scalding device, I suspect its the pot that controls the heat. I remember I had a soldering iron with a similar set up.
I've never seen a soldering iron with a pot on it and believe me I've seen more different types of soldering irons than you can shake a stick at.
But have you ever seen a soldering Iranian ?
-
But have you ever seen a soldering Iranian ?
I've seen a garden walk, I heard a diamond ring but I ain't never seen an soldering Iranian.
-
It's not obvious how the control system on that works - are there any markings on the TO220 device? (The sticky out one with three legs!)
I'll have a look tomorrow.
There you go, I didn't think my camera was this good ... got it off my daughter who was going to throw it away because the battery had died.
Is it any more help?
(http://www.palmergroup.co.uk/Bio/Solder pot component.jpg)
-
I've tried to do a HPT a few times, never found it very successful. I'd rather take a sample of the oil, add 10% petrol, and see what drops out after 24 hours.
-
Bump ... Tony is the photo above any more help or is it just a rubbish control system that's beyond salvage as you intimated above?
-
One of these fellows then - a triac.
(http://www.electronicecircuits.com/wp-content/uploads/2010/04/bt136-triac-pin-configuration-Passivated-sensitive-gate-triac.jpg)
It'll be something very similar to this:
http://www.electronicecircuits.com/electronic-circuits/filament-light-dimmer-circuit
You can either change the C (smaller capacitance will give more on time, or larger C will give less on time). Or the variable resistor - larger R will give less on time. If you can find the value of the variable resistor track you could hack another fixed resistor in series with it to also slow the charging of C.
-
Thanks Tony. So, modification would be possible, that's great.
I'll dismantle it further and see if I can relate the bits to the diagram. Preempting any physical modifications and looking at the diagram, could I increase the value of R1 or, if R1 isn't fitted, fit one?
-
Yes exactly that Julian. Good luck and let us know how you get on.
If all else fails you could try an actual light dimmer circuit from a light dimmer to see if that helps at all (they do, after all, turn all the way down).
-
I can work that out only from what you wrote ... I still don't have a clue as to how the circuit works!
Good thought about the light dimmer, but would it take the load. The most I think they will take is about 200 watts.
Don't answer that ... yet, I'll see if I can find out what my pot's rated at.
-
D'oh ... just realised ... you meant in place of the existing pot didn't you.
-
1 kw lighting dimmers are a stock item at my wholesalers.....any good to you?
-
Hi Carl, welcome to the wiki and wiki forum.
Nice to see you posting on here mate.
-
Yes as Evadne says, welcome to the wiki and forum. Give us a shout if you want wiki editing rights.
Didn't know you could get them that size ... how much? Just checked TLC and they have them at £15.40 ... min load 200W max 1000W
I tried to find an old dimmer switch I thought I had in the garage today and failed.
Thinking about it, it would make sense to try and work out how much power the thing draws.