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High Temp Low Drift Thermocouple Probes with Mini Connectors

Super OMEGACLAD™ Thermocouple Probes - Quick Disconnect Probes with Miniature Size Connectors


Item# KMQXL-040G-6

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $67.81
10-24 $64.42
25-99 $61.03
100-499 $57.64
500-999 $54.25
1000+ $50.86

In stock

Lead Time (If not in stock): 3 weeks
Super OMEGACLAD™ Thermocouple Probes - Quick Disconnect Probes with Miniature Size Connectors KMQXL-040G-6 KMQXL-040G-6
  • For Use Up to 1335°C (2440°F)
  • Excellent Long Term Stability at High Temperatures
  • Low Thermal Drift
  • Nickel-Chrome Based Super OMEGACLAD™ Sheathing Provides Excellent High Temperature Performance

KMQXL-040G-6 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Thermocouple Type
Process Temperature Range
Sensor Application
Junction Type
Probe Diameter
Probe Length
Connector Color Code Standard
Additional Feature
Sensor Type
Sheath Material
Connector Style

  • Measurement Units °C
  • Measurement Type Air/Gas Temperature

Super OMEGACLAD™ XL Probes are an excellent choice for high-temperature measurement. They provide very low drift at high temperatures as compared to conventional Inconel and Stainless Steel sheathed probes. They are available in both K and N thermocouple calibrations. Omega offers probes in a variety of styles.
See the Related Links section at the bottom of this page for additional models.

Standard Dimension - Quick Connect Probes

Color Code
Sheath Dia.
Model Number
ANSI Color Code
Sold Separately 
 Mating Connector PN Cable Clamp PN Safety Clip PN
XL Sheath
XL Sheath

[*]Specify junction type: G (Grounded), E (Exposed), or U (Ungrounded).
[**]Specify Length in inches: 6, 12, 18, or 24

Want to learn more about thermocouples? Click on the link to go to our thermocouple tutorial page!

Read this article if you need help in selecting the thermocouple junction

View the Thermocouple Accuracy and Color Code charts

Probes under 48 inches in length are shipped "straight". Probes 48 inches or longer are shipped "coiled". If probe above 48 inches in length must ship straight, please add "-SST" to the end of the part number, and add $75.00 to the probe cost. Maximum ship straight length is 96 inches. Additional shipping fees from carrier may also apply for non-standard length packaging.

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Rated 1 out of 5 by from Failed on First Try I purchased the type N thermocouple to use for high temperature applications at 1250C. The Omega spec sheet says it should be good to 1338C, or at least to 1260C as listed on other sites. The first time using it at 1250C it failed within ten minutes. It doesn't help trying to figure out what's going wrong that the composition of the sheath, made of Omega-P and Omega-N cannot be found anywhere.
Date published: 2017-07-24
Rated 5 out of 5 by from greate futureas I had temperature products from Omega and I'm happy with them.
Date published: 2016-09-13
Rated 5 out of 5 by from Supply Chain Manager Works as we problems which is what we want.
Date published: 2024-03-21
Rated 5 out of 5 by from seems fine I have not actually tried it out yet, but it arrived on timme
Date published: 2023-08-09
Rated 4 out of 5 by from Great Thermocouples These thermocouples are really great! I have never had any issues with them and they hold up really well for my lab experiments. Highly recommend.
Date published: 2023-04-26
Rated 5 out of 5 by from Temperature monitor Works as expected for monitoring gas temperature in reactor
Date published: 2023-03-19
Rated 5 out of 5 by from A pleasant experience These thermocouple probes are exactly the size and type I needed for my project. Their purchase on the website was easy. Since they were in stock, shipping was fast. It was a pleasant experience. My suggestion to OMEGA is to make it possible to have a high-resolution magnified view of the items displayed.
Date published: 2022-10-24
Rated 5 out of 5 by from Reliable Excellent, reliable quality. Omega is the go to source for temperature measurement devices
Date published: 2022-08-31
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Hi, I have a question for your product KMQXL-062U-24, is the probe you sell bendable? And is there a need to buy extension wires to connect the thermocouple to the thermometer? Thanks!

Asked by: mikesiqi
Thank you for contacting Omega. Yes, we can confirm that the probe is bendable to 90 degrees. Depending on the application, the need to buy extension wires to connect the thermocouple to the thermometer will vary. This probe can be directly connected to a thermometer, which accepts the mini thermocouple connector. However, if the application is in a tight place, you may need extension wire to connect to a thermometer. Please contact our Tech Support if you have any further questions.
Answered by: Jane
Date published: 2020-04-09

For probes such as KMQXL-062G-6, Super OMEGACLAD™ Thermocouple Probes - Quick D, do they come with a calibration cert? Do you need to calibrate it periodically?

Asked by: Mary843
The probes will come with a CAL-1 Certificate of Conformance and it is advised to check for calibration once per year or more frequently if used in a critical or at high temperatures.
Answered by: ANB ENG
Date published: 2020-08-08

i have a 24" type k probe. What is the recommended minimum Immersion Depth?

Asked by: Catalogcowboy
Thank you for your inquiry Catalogcowboy. The minimum Immersion Depth for any thermocouple probe is 10 times the diameter of the probe.
Answered by: Application Engineer SP
Date published: 2022-08-19

Can this probe be used in an acid solution at low temperatures (<80°C)?

Asked by: Yueh
Thank you for your inquiry. This probe is not suitable to be used in acid solutions.
Answered by: Application Engineer CB
Date published: 2022-03-03

Do these probes include the mating connector (as shown in the picture)?

Asked by: Andy45
Thank you for your inquiry. Miniature Mating Connector and Cable Clamp sold separately.
Answered by: Application Engineer JB
Date published: 2020-06-04
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