temp control mode keeps switching back to power mode.

[Alien Traveler]

I gather that you lack the ability to conceive that me typing the very same information by hand from what I know, 1) would be a waste of my time, 2) would be the same information as per these links.

As some point, I understand that you might have difficulties in understanding some things, but the information about metal, resistance, temperature, is quite constant.

I'll try with a simple example using simple words as your reply implies that the links I provided contained information that were simply too difficult for your comprehension.

When one makes a coil, place it on a tester (for example) and does a reading of it's resistance, they will obtain a specific number at room temperature. If they fire the coil, even just a little bit, the coil gets hot, and the resistance, if retested before it cools down, will be higher.

With Temp. Control, as per what some other gents have already explained, is that using a varying measurement as the coil is under usage, creates a situation where the sensor, utilizing the resistance read from the coil at the moment, estimates the temperature of the coil and makes that magical thing that "controls" the power provided to the coil so it does not go higher than the set temperature. If the resistance is not locked, it can still estimate to an extent by the variant in resistance at the moment, but at this point, the temperature of the coil is already higher than room temperature, which creates a distorted temperature estimate.

So instead of maintaining a set temperature, this results in a variance of resistance control approach, which can create a situation that with chain vaping, the temperature will be increased and not accurate.

I'm certain that some mods may have an approach to consider such an approach, but it is a much simpler, more accurate, and cleaner approach to simply lock the resistance.

Anyways, with this, I'm done with this thread.

Thanks for explanation.
By the way there is no special temperature sensor. Coil itself is the sensor (I believe you know it, but is was not clear from your explanation). But it has nothing to do with "lock resistance" option. I doubt anybody besides manufacturer's programmers really knows how it really works and whether it is necessary to use (but I am ready to hear it from knowledgeable person). For example my Pico remembers original resistance all right. If I unscrew tank and put it back it asks it it is the old coil and sets original resistance perfectly, even if tank is hot and coil resistance is higher than original. So, I do not lock resistance - just see no need in it.

 

[RandyF]

I gather that you lack the ability to conceive that me typing the very same information by hand from what I know, 1) would be a waste of my time, 2) would be the same information as per these links.

As some point, I understand that you might have difficulties in understanding some things, but the information about metal, resistance, temperature, is quite constant.

I'll try with a simple example using simple words as your reply implies that the links I provided contained information that were simply too difficult for your comprehension.

When one makes a coil, place it on a tester (for example) and does a reading of it's resistance, they will obtain a specific number at room temperature. If they fire the coil, even just a little bit, the coil gets hot, and the resistance, if retested before it cools down, will be higher.

With Temp. Control, as per what some other gents have already explained, is that using a varying measurement as the coil is under usage, creates a situation where the sensor, utilizing the resistance read from the coil at the moment, estimates the temperature of the coil and makes that magical thing that "controls" the power provided to the coil so it does not go higher than the set temperature. If the resistance is not locked, it can still estimate to an extent by the variant in resistance at the moment, but at this point, the temperature of the coil is already higher than room temperature, which creates a distorted temperature estimate.

So instead of maintaining a set temperature, this results in a variance of resistance control approach, which can create a situation that with chain vaping, the temperature will be increased and not accurate.

I'm certain that some mods may have an approach to consider such an approach, but it is a much simpler, more accurate, and cleaner approach to simply lock the resistance.

Anyways, with this, I'm done with this thread.

You may be done with this thread, I'm guessing because you are starting to understand how wrong you are. You do have a slight grasp of how TC works, though like alien stated above, there is no sensor. The chip calculates temperature based on mathematics. Some wire is very predictable in how it reacts to heat. When you apply a set amount of power to a coil the chips calculates how that power will effect the rise in resistance. It calculates what the resistance rise should be, based on the power applied, and then calculates what the temperature would be at that resistance. That is why kanthal doesn't work with TC, it is not as predictable, or doesn't change enough, one or the other, I can't remember which.

Again though, with that said, it has NOTHING to do with resistance lock. [read this slow and comprehend it] When you put your coil on for the initial read, THAT is the base the chip uses to calculate the temperature. No matter how much you chain vape, the mod will use the base reading it got when you first attached the atty, which is the same reading it will display on the screen. If that resistance on the screen does change, say your .5Ω coil is now .62Ω, then something is wrong. Usually it is a bad connection, either from the atty to the mod, or in the coil itself, or possibly a short. What happens, usually, is it is a bad connection, so the chip is re-reading the resistance, which will be higher because now it is hot. Very seldom, if ever, ill the resistance be lower. Will locking the resistance prevent this....yes, but at the same time you are masking a problem. The chip knows, and remembers, it's base reading, it doesn't need to be locked in.

If the coil is solid and there are no shorts or other bad connections then the chip will continue to use the very first reading it received when you attached the atty, and assuming you don't remove the atty and reattach it warm/hot. I have had the same atty and the same SS coil connected for three weeks and it has been .51Ω the entire time, no resistance lock needed. I have also had many coils in the beginning that were not stable. I didn't need resistance lock to fix it, I needed to learn to build better coils and get solid connections.

Could there be mods out there that require someone to lock the resistance, probably, I haven't used every TC mod, but I haven't seen any. Like I said earlier, those would not be a mod I would personally use, clearly they have an inferior chip.

 

[Hitmetwice]

Excellent replies fellas.
I commend your restraint in the face of in your face posers.

 

[Imfallen_Angel]

Thanks for explanation.
By the way there is no special temperature sensor. Coil itself is the sensor (I believe you know it, but is was not clear from your explanation). But it has nothing to do with "lock resistance" option. I doubt anybody besides manufacturer's programmers really knows how it really works and whether it is necessary to use (but I am ready to hear it from knowledgeable person). For example my Pico remembers original resistance all right. If I unscrew tank and put it back it asks it it is the old coil and sets original resistance perfectly, even if tank is hot and coil resistance is higher than original. So, I do not lock resistance - just see no need in it.

Well, I've decided to give you more info as it appears that you are curious and still appears to lack an understanding about TC.

Note that I never stated anything about measuring the temperature, I stated that the measurements are the coil's resistance.

Also, the coil is not sensors, the electronics on the board contains a sensor that measures the coils resistance... I gather that you're thinking "sensor" as something that's reading the temperature but that isn't how it works. Maybe it's easier for you if I called it a resistance metering chip.

The board is programmed to measure the resistance of the coil in TC mode. The metering chip reads the resistance of the coil when cool (aka when you are supposed to lock it), and as you apply power to it so to vape, the coil heats up, and the resistance of the coil increased. The board is programmed to know how much the resistance of the metal used in the coil will increase using a mathematical formula relating to the metal used. NI, TI and SS all have specific rate of increase of resistance, which is why mods have different modes for each. Newer mods also have programmable modes where you can enter your own specific parameters (which you would have to know, via according to the exact nature of the metal that you are using to be accurate).

Your Pico simply saves the last measurement, and should you put in another coil and tell it that it's the old one, the reading might be flawed and it would fire the coil in an inappropriate way, but if you are not locking it, then it will probably reads the present coil. As per your description, what you are seeing is the last reading of resistance, but once you fire it again, the reading should be updated with the present resistance, and again, this may make it a faulty reading.

Again, locking the resistance is about setting the mod to know what the room temperature resistance of the coil is, and adjust the TC function accordingly.

So if you do not lock the resistance reading at room temperature, it may appear to work, and the board does have some fail-safe to try and prevent overheating the coil and prevent dry hits, but it is not doing it with the same precision as locking the resistance would.

You should read more about it if you're still having trouble understanding.. here's a few pages that repeats what I've said here, but maybe different wording might help you:
Tutorial: Guide to Temperature Control Vaping | MistHub
Temperature Controlled Vaping: How? What? Why?
Temperature Controlled Vaping: The Ultimate Guide
Beginners Guide To Temperature Control For Vapers

And yes, they all recommend locking the resistance.

 

[daviedog]

Glad i bought some popcorn..

 

[RandyF]

Well, I've decided to give you more info as it appears that you are curious and still appears to lack an understanding about TC.

Note that I never stated anything about measuring the temperature, I stated that the measurements are the coil's resistance.

Also, the coil is not sensors, the electronics on the board contains a sensor that measures the coils resistance... I gather that you're thinking "sensor" as something that's reading the temperature but that isn't how it works. Maybe it's easier for you if I called it a resistance metering chip.

The board is programmed to measure the resistance of the coil in TC mode. The metering chip reads the resistance of the coil when cool (aka when you are supposed to lock it), and as you apply power to it so to vape, the coil heats up, and the resistance of the coil increased. The board is programmed to know how much the resistance of the metal used in the coil will increase using a mathematical formula relating to the metal used. NI, TI and SS all have specific rate of increase of resistance, which is why mods have different modes for each. Newer mods also have programmable modes where you can enter your own specific parameters (which you would have to know, via according to the exact nature of the metal that you are using to be accurate).

Your Pico simply saves the last measurement, and should you put in another coil and tell it that it's the old one, the reading might be flawed and it would fire the coil in an inappropriate way, but if you are not locking it, then it will probably reads the present coil. As per your description, what you are seeing is the last reading of resistance, but once you fire it again, the reading should be updated with the present resistance, and again, this may make it a faulty reading.

Again, locking the resistance is about setting the mod to know what the room temperature resistance of the coil is, and adjust the TC function accordingly.

So if you do not lock the resistance reading at room temperature, it may appear to work, and the board does have some fail-safe to try and prevent overheating the coil and prevent dry hits, but it is not doing it with the same precision as locking the resistance would.

You should read more about it if you're still having trouble understanding.. here's a few pages that repeats what I've said here, but maybe different wording might help you:
Tutorial: Guide to Temperature Control Vaping | MistHub
Temperature Controlled Vaping: How? What? Why?
Temperature Controlled Vaping: The Ultimate Guide
Beginners Guide To Temperature Control For Vapers

And yes, they all recommend locking the resistance.

Wow, you are stubborn. You are debating with people that have a full working knowledge of how TC works, and have been using it since it's inception. I have also had conversations with staff at Evolv, you know, the people that created TC. Feel free to email them if you like, they are friendly people. I think I will take the advice of the ones that actually created TC, and resistance lock for that matter, over MistHub and random forum posters. I showed you Evolv's own data sheet that CLEARLY states it may be "desirable" to engage resistance lock. No where did it say, or has it ever said, it is necessary to use for TC to work properly.

Quote, "Again, locking the resistance is about setting the mod to know what the room temperature resistance of the coil is, and adjust the TC function accordingly."

No. It. Isn't. The chip sets the baseline based on the initial reading it gets the first time you attach the coil. There is no need to lock the resistance to the baseline setting, the chip will always use that baseline as long as nothing changes. Even when you fire the mod and heat the wire, the next time you fire, it will use the SAME baseline, NOT the current higher resistance you have due to the coil being hot. Whatever the resistance is on your display is the resistance the mod is using for the baseline, it is telling you what it is doing. If the resistance changes too much, the chip is telling you something is not right.

Locking the resistance is about keeping the original baseline, even though something is wrong. I don't know how to put it any clearer.

Seriously, if you simply refuse to believe me then email Evolv and get it from the horses mouth.

 

[dhood]

...The chip sets the baseline based on the initial reading it gets the first time you attach the coil. There is no need to lock the resistance to the baseline setting, the chip will always use that baseline as long as nothing changes. Even when you fire the mod and heat the wire, the next time you fire, it will use the SAME baseline, NOT the current higher resistance you have due to the coil being hot. Whatever the resistance is on your display is the resistance the mod is using for the baseline, it is telling you what it is doing. If the resistance changes too much, the chip is telling you something is not right.

Locking the resistance is about keeping the original baseline, even though something is wrong. I don't know how to put it any clearer.

Seriously, if you simply refuse to believe me then email Evolv and get it from the horses mouth.

You obviously don't have a Sigelei 213. It reads a new baseline every time it fires. Even with the resistance locked. So after about 3 or 4 hits, it is about 200+ degrees over where it should be.

 

[Imfallen_Angel]

You obviously don't have a Sigelei 213. It reads a new baseline every time it fires. Even with the resistance locked. So after about 3 or 4 hits, it is about 200+ degrees over where it should be.

I've read and heard about several issues with that model... and on my Facebook "vape" groups, it's being traded non-stop like a hot potato (so that speaks for itself). I was considering it as it's a sleek looking mod, but...

My go-to now in my Eleaf TC100W, and it's a fantastic device, not a single issue with it.. blows me away to have spent so little on such a device when I see people buying mods that are easily 4-5 times the price and have issues, end up wanting something else. The people I chat with on these groups that have one, tend to all be of the same opinion and love theirs.

Compared to just about every other mod out there, it's is extremely comfortable to hold, and to add to that, the squeeze trigger has made me feel that button triggers are primitive. Heck, just the way it looks makes it look like a sci-fi device. I've tried, but can't find a single negative with it after several weeks now. Hell, it even fits a back pocket better than any other dual battery mod that I've seen so far would.

The only mod that's caught my eye lately is the Wismec Reuleaux RX75... so far, all reviews, comments, etc. have been great. Have to admit, it does look a lot like a single battery rip on the TC100W. And that's the thing that held me back... the single battery thing. After the insanely long daily battery life with my TC100W, I hate having to use my smaller single battery mods that I need to change the battery 3-5 times per day.

 

[RandyF]

You obviously don't have a Sigelei 213. It reads a new baseline every time it fires. Even with the resistance locked. So after about 3 or 4 hits, it is about 200+ degrees over where it should be.

My Cuboid also raises the resistance as it fires, by the end of my draw my .5Ω coil is reading .62Ω or so, but, once I let off the button it returns to the base reading of .5Ω like it should. When I press the button again it repeats the same process. This is of course with resistance lock not engaged.

Like I said in an earlier post, I have no doubt there are mods out there that might require the resistance to be locked, and like I said then, that would be a mod I would not use. If the chip cannot manage the coil on it's own like it should, I would have little faith it could do any better with managing any other complex features.