Evolv DNA Forum
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 2 of 3      Prev   1   2   3   Next
VapingBad

Avatar / Picture

Administrator
Registered:
Posts: 2,449
Reply with quote  #16 
Both are a method of expressing the relationship between temperature and resistance, both can be set to different degrees of accuracy, a TCR is limited to a linear-relationship and the csv is not.  If the material has a perfectly linear-relationship/flat-curve they are as good as each other, but for materials that don't the csv can be more accurate.

So a csv is definitely a superior method.

__________________
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

Latest versions of EScribe: DNA 200/250DNA 75
Common problems
HugeEgo

Member
Registered:
Posts: 35
Reply with quote  #17 
Steam engine's TCR values are listed for the "vaping range."  If you look up the TCR of titanium at 20°C, you will usually find .0035.  However, that is for room temperature.  In the vaping range the TCR changes from .0036 to .0037.  This is where Steam-engine gets the value of .00366.

So, Daniel plugged in .00366 as his TCR number, which IS the same thing as a .csv curve.  The .csv file is simply a file that provides a TCR number for a certain temperature (since most metals have varying TCR's depending on temp).  This allows the user to put in the exact TCR number for, say, 450F.  However, 0.0036 is going to be very close throughout the whole vaping temp range.

As for why his .csv provided a less accurate temp, I don't know.  It should be exactly the same as inputting the TCR manually.  Perhaps he used the wrong file.

If you're really concerned about it, go buy a thermocouple probe and test yourself.  You can get cheap Chinese digital thermometers for around $20.
Vaportron

Member
Registered:
Posts: 45
Reply with quote  #18 
How would you test the actual live temp? Shoot a coil with an infrared thermometer?
Hitting the fire button to do a dry burn test isn't really accurate. During a vape (that is a dry hit), you are inhaling and providing air Cooling to the coils which just blowing a fan (even at high speeds) just doesn't really replicate the event.
ChunkyButt200

Avatar / Picture

Administrator
Registered:
Posts: 1,516
Reply with quote  #19 
^^^^^if you have an accurate temp probe, one that plugs into a good multi meter, that should work. stick it in between the coil, maybe wrap a tiny bit of cotton around so it doesn't short the coil out. 
__________________
1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
Vaportron

Member
Registered:
Posts: 45
Reply with quote  #20 
Quote:
Originally Posted by ChunkyButt200
^^^^^if you have an accurate temp probe, one that plugs into a good multi meter, that should work. stick it in between the coil, maybe wrap a tiny bit of cotton around so it doesn't short the coil out. 


AH very good. Thanks for that info.

As far as which SS TCR "code" is best i like 0.00100 as one reviewer had put it.
Has anyone else been using this "code" ?
Vaportron

Member
Registered:
Posts: 45
Reply with quote  #21 
Quote:
Originally Posted by ChunkyButt200
^^^^^if you have an accurate temp probe, one that plugs into a good multi meter, that should work. stick it in between the coil, maybe wrap a tiny bit of cotton around so it doesn't short the coil out. 


AH very good. Thanks for that info.

As far as which SS TCR "code" is best i like 0.00100 as one reviewer had put it.
Has anyone else been using this "code" ?
ChunkyButt200

Avatar / Picture

Administrator
Registered:
Posts: 1,516
Reply with quote  #22 
i'm using the csv file from steam engine's wire wizard (304 ss). a little high on the tcr value but works good enough for me. i'm hearing 0.00092 is the correct/most accurate when it comes to 316.
__________________
1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
Vaportron

Member
Registered:
Posts: 45
Reply with quote  #23 
Quote:
Originally Posted by ChunkyButt200
i'm hearing 0.00092 is the correct/most accurate when it comes to 316.


thats what i heard about 316L but i cannot enter that into escribe
dna_ss.png 

ChunkyButt200

Avatar / Picture

Administrator
Registered:
Posts: 1,516
Reply with quote  #24 
do you have an older version of escribe? make sure youre running the latest. i can enter that value on my escribe. so my guess is you need to update.
__________________
1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
Vaportron

Member
Registered:
Posts: 45
Reply with quote  #25 
Yes vey good. I have updated escribe (i thought it was suppose to keep itself up to date) and have changed the tcr to 0.00092! Thanks Chunky.
However what is everyone using? Now I'm vaping at 350F compared to 390F (0.00100).

Now if this thing is reading the temperature why do i have to turn it down? Because it is just guessing?
ChunkyButt200

Avatar / Picture

Administrator
Registered:
Posts: 1,516
Reply with quote  #26 
i dunno dude. i'm not great at math. if it's working for you with turning your temp down, up, sideways great. call it good and vape on. i know with ss the tcr is so low the board has that much less of a tcr to regulate temp within. can make the vape inconsistent. make sure to lock your ohms with ss because of the low tcr. and spaced coils are friendlier.  the latest escibe is a beta version so it's not an automatic update yet. but everyone's using it. in a sense the board is kinda guessing at the temp of the coil, but through resistance changes in the coil hence the use of a TCR.
__________________
1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
Vaportron

Member
Registered:
Posts: 45
Reply with quote  #27 
I check atomizer resistance and it says the atty is stable should i still lock ohms? Thanks again
watcher64

Junior Member
Registered:
Posts: 26
Reply with quote  #28 

Quote:
Originally Posted by Vaportron
I check atomizer resistance and it says the atty is stable should i still lock ohms? Thanks again


IMHO, I would never lock the ohms on a stable atty connection, it kind of defeats how the mod determines temp.

It is useful when you have a flakey atty but if not , I'd stay far away from the lock ...  just my .02

Vaportron

Member
Registered:
Posts: 45
Reply with quote  #29 
i was just wondering bc im running 0.00092 on tcr
in my igo w i have a 6/7 wrap 0.71ohm 100%vg that is really great at 350F
but in my tfv4 mni rba i have a 4 wrap 0.40ohm 30pg/70vg set to 495F which is very comparable but at 350F on the igo w the vape hits harder.
both 2 strand 0.3mm twisted single coil 316l ss / 6mg / 200W / preheat 1,1,0

if i change tanks that have different resistances they should vape similar if not the same when set to any desired temp, not be completely way off. i could say maybe its the juice but the juice that hits harder has more vg??

i have read about some "anemic" or cold coils but were mostly all talking about when running dual coils.
mactavish

Senior Member
Registered:
Posts: 127
Reply with quote  #30 
I wrote to djlsbvapes a week ago, inviting him to this thread if he cared to respond and explain his tests and temperature results. Guess he's busy.
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.