2 K-Type Digital Thermometer w/ Thermocouple Sensors

[Kriztoffer]

I've been speaking some with Neuromancer at MSN.

He linked me this darn cheap Thermometer with Thermocouple sensors..Which I'm looking for and I guess many others..
Is there any chance this thermometer could read temperature range of LN2?

LINK (http://www.suntekstore.com/2-K-Type-Digital-Thermometer-w--Thermocouple-Sensors.html)

Specs:
Brand new DM6802B thermometer with a portable 3 1/2 digit, designed to use external K-type thermocouple as temperature sensor.
Description:


Differential temperature measurement
Selection between celsius and fahrenheit
Overload display alert when input exceeds measurement range
Designed for use with included K-type thermocouples
Data-hold function
Temperature read-out in °F or °C selectable
T1/T2, T1-T2 display

Specifications:


Temperature range: -50°C to 1300°C ( -58°F to 1999°F)
Battery: 9V battery (installed)
Dimensions: 149 x 71 x 41mm
Weight: 200g ( including battery )
Included 2 ''K''-thermocouples
Resolution : 1°C or 1°F

Package Include:


1 x DM6802B Unit
2 x K type temperature test probe(-50 to 250°C)
2 x screw
1 x operating manual

[rickss69]

Most of your standard temp probes are not really accurate. The unit itself is probably fine, but the K-types that come with it need to be replaced. PM Splave if he does not chime in here...he might remember the source of those from sdumper.

[Kriztoffer]

Most of your standard temp probes are not really accurate. The unit itself is probably fine, but the K-types that come with it need to be replaced. PM Splave if he does not chime in here...he might remember the source of those from sdumper.

Do you know of any Ktype probes that are good?

I'll redirect him to this thread.:)

- kriz

[Buckeye]

To get really good probes will cost you a ton, they are not K-Type.

All the probes I have, maybe 8 total, 2 good ones and 6 cheaper ones all read just fine up to about -150c, good ones go to -180c.

It doesnt really matter all that much tbh.

If your chip CB's at -130c but your probe reads -128c it doesnt matter, it CB's the same anyway.

Going to max LN2 temps for me when a probe only reads to -180c just means I pour more in.

As the temps bounce around a lot you are not going to keep anything at exact temp anyway.

[Gutterz]

it only says to -50c. here is a few on ebay
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330382140698&ssPageName=STRK:MEWAX:IT

http://cgi.ebay.com/Digital-K-J-Type-Thermocouple-Thermometer-4-Probes-a4_W0QQitemZ230419974878QQcategoryZ0QQcmdZViewItem QQ_trksidZp4340.m506QQ_trkparmsZalgo%3DNGRI%26its% 3DI%252BC%252BS%26itu%3DUA%26otn%3D10%26ps%3D63%26 clkid%3D7576734053989812854

Both say their good for -200c.

[Kriztoffer]

Jup, you are speaking the truth Buckeye.:) I made this thread to hear opinions from experienced people cause I don't know much about thermometers.

Looks pretty promising Gutterz, I just need a reliable meter that don't cost to much. If I could get meter that is good for -180 and avoiding the price of fluke or UFI I'm happy:D

[rickss69]

These are cheap and work great. I have one on the cascade...

http://cgi.ebay.com/Universal-Digital-PID-Temperature-Control-Controller_W0QQitemZ350277583494QQcmdZViewItemQQpt ZLH_DefaultDomain_0?hash=item518e2bc286

[thebanik]

Me too looking for a thermometer and thinking of picking the one you posted in the OP kritz. Let me hope its decent enough till around -150C. IMO we dont need accuracy but just a fair idea about the temps. the chip and mobo can handle stably....

[Kal-EL]

Me too looking for a thermometer and thinking of picking the one you posted in the OP kritz. Let me hope its decent enough till around -150C. IMO we dont need accuracy but just a fair idea about the temps. the chip and mobo can handle stably....

Yah. Except, add also that we want to have consistant readings from bench session to bench session. We don't want to believe that the cbb is @ -42c during session 1 and then session 2 the cold bug is -32c. That wastes ln2/dice and time. ;)

[FACE]

These are cheap and work great. I have one on the cascade...

http://cgi.ebay.com/Universal-Digital-PID-Temperature-Control-Controller_W0QQitemZ350277583494QQcmdZViewItemQQpt ZLH_DefaultDomain_0?hash=item518e2bc286

Just bought one of these.... Thanks! :thumbsup:

Also have been watching flukes on the bay. like this one:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300393245161&ssPageName=STRK:MEWAX:IT

[Kriztoffer]

it only says to -50c. here is a few on ebay
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330382140698&ssPageName=STRK:MEWAX:IT

http://cgi.ebay.com/Digital-K-J-Type-Thermocouple-Thermometer-4-Probes-a4_W0QQitemZ230419974878QQcategoryZ0QQcmdZViewItem QQ_trksidZp4340.m506QQ_trkparmsZalgo%3DNGRI%26its% 3DI%252BC%252BS%26itu%3DUA%26otn%3D10%26ps%3D63%26 clkid%3D7576734053989812854

Both say their good for -200c.


Anyone who have used these thermometers? and know they work good?

[FACE]

I would just grab the one rick suggested.... $40 is worth the gamble if you don't end up liking it. :good:

[Gutterz]

Anyone who have used these thermometers? and know they work good?


I'll let u know when I get mine.

[Kriztoffer]

Spoke with Patch from Overclock.net/Kingpincooling forum about the Thermometers GutterZ linked.


So far they've worked pretty well. The actual K-type probes they provide aren't as accurate as some others I've used, but they're consistent.

So I picked one up from Ebay myself, can't be that bad. And I'll try to get a few good probes.


- Kriz.