k-probe pluged in meter -38c

[eagle101]

just pluged in the yellow k-probe from the (VAPOLI SS jinu built) to a meter its reading -39c now.

on the vapoli phasechange display its -67c

any ideas

[johnksss]

this meter you have...is it set to J type or K type?
is the end of the probe on the neck or on the evap it self?
and if you have a second k type probe, tape it to the bottom of the evap and check it's readings.

[n00b 0f l337]

Something tells me the -39C might be more accurate.

[eagle101]

its a k type meter its connected to the bottom of the unit already, not the evap head, my unit is a nf11fx danfrost.
im happy with everything, my display throws me off at -67c
thanks for the help

[johnksss]

i wouldn't be paying to much attention to the one on the case then.... now that you have the probe. the probe is going to be closer to right.
is it at -67 when you cut it on? or does it drop to that?

[Ian[Frozen]]

No doubt about it! The K type sensor will be taped to the suction line at the evaporator exit and is the most reliable source for temperature readings.

[eagle101]

i just ordered this, due to the male k probe connector is sticking out 2 inches into my computer case, now i can extend it to my desk with my meter.

3m Extension Cable for Type K Thermocouple Probes
3m cable provides additional length to Type K temperature sensors. This assembly utilizes Type K thermocouple wire and male/female Type K plugs, maintaining maximum accuracy.
20. bucks its 3 meters long i hope i wont get any temp drops or loose any true temps due to the long ness of the wire, 10Feet?

[n00b 0f l337]

Shouldn't be an issue, thermocouple's don't really measure resistance.
http://en.wikipedia.org/wiki/Thermocouple

[eagle101]

Thanks!
ive been watching my meter in "computer off times" and my Atomic clock that has a thermometer in it and the temps are withen 1 degree difference than the probe in phasechange on floor and atomic clock/temp gage on desk.
so i feel my meter is good enough i got it for free.
question:
this "dan frost NF11FX" unit gets cold like 2 times faster than a vaporchill xe2's i had in the past.....
im sure this is because ots a bigger compressor and all that?

[n00b 0f l337]

No, more the tuning of the unit.
Make sure you verify it though, if Jin used a K type probe, measure it and compare your calibration on your meter by testing either the same probe or a different probe in ice water and then in boiling water.

[wdrzal]

Shouldn't be an issue, thermocouple's don't really measure resistance.
http://en.wikipedia.org/wiki/Thermocouple

But any length of wire adds resistance (ohms) which will alter the voltage(voltage drop).

10 feet shouldn't be that much of a error,but it depends on what metal the extension wire is made from.

[eagle101]

Digital K-type Thermometer DM6801
i didnt check it with ice or hot water yet.....
the Fahrenheit is exactly correct with room temps.
pluged into my unit heres the Idle temp.

[n00b 0f l337]

Which would be acceptable. What does the sensor Jinu gave you say?

[eagle101]

im pluged into jinu's sensor ktype from the unit, which is connected to the base area of evap head,closet to compressor .....
on my display from the unit jinu built the display show -67c
when i take the cover off im going to take pix of where the sensor is attachted more precise......

[n00b 0f l337]

That'll help because that'd be a huge delta across an evaporator.

[kitfit1]

which is connected to the base area of evap head,closet to compressor .....

I must admit, i'm a bit confused here. The base of the evap can't possibly be anywhere near the compressor. As n00b 0f l337 said, pics would go a long way to helping here.

[Ian[Frozen]]

I feel sure Eagle101 means that the wires enter the insulation near the compressor, however am sure both sensors are co-located close the the evaporator around the suction tube. When the insulation is removed we'll know for sure..

[teurorist]

Vapochill ?
wasn't that the company which was cheating on there temperature

[n00b 0f l337]

Vapoli was a Jinu product.

[eagle101]

thanks ian.....
you can see now my power supply is on top of the vaporchill the bottom is the phasechange, and the center is the my ch4extreme......
when i had the system apart i should have looked to see where jinu put the sensor..........
i never pulled back the insulation from the evap head maybe its there
im just using the vaporchill case glad i keeped it........


attachment pix failed....will resend

[eagle101]

thanks guys

[eOn]

I'm not sure if this helps but when I had my Mach 2 GT upgraded by Little Devil he also changed my sensor and display to a k-type unit. My Mach did show -70 odd under load and now shows -40. I'm fairly sure (well I am), that the -40 is much more likely from a SS Phase.

[kayl]

commercial controllers are great they have a exponential temp display, the colder you go the more colder the controller displays temps
as long as its hold temps constantly you will get a very nice overclock, that nice temps for that compressor

[eagle101]

Question:

Condensation, ive been watching my system for weeks , zero Condensation so far.
without a heater on the back of the board, -46c idle, should i plug in the heater?