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Thermocouple Probes With and Without Mounting Threads and M12 Connectors

M12 Series Probes   
M12 Series Probes:Thermocouple Probes With and Without Mounting Threads and M12 Connectors
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$52.00  M12JSS-1/4-U-6-B
Available in Type "J" with a 304 Stainless Steel Sheath or Type "K" with an Inconel 600 Sheath
Single Element Configuration Standard, Optional Dual Element Styles Available
Ungrounded Junction Standard, Grounded Junction Optional
Available in 1/8" & 1/4", 3mm and 6mm Diameters in a Variety of Lengths and Mounting Threads
All Sensors are Supplied with a Stainless Steel Transition with an A-Coded, Male, M12 Connector with Compensated Pins
A Variety of Thermocouple Extension Cables are Available For Installing Your Thermocouple Probe

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Note: These Sensors Require an M12 Extension Cable to Connect the Sensor to Your Instrumentation. A Partial List of our M12 Extension Cables is Included in the Ordering Table Below.

Omega's M12 Thermocouple probes are a convenient way to measure the temperature in your process. These thermocouple probes are available as Type K thermocouples with Inconel 600 sheaths, or as Type J thermocouples with 304 Stainless Steel Sheaths. Standard probe sizes include 1/4" & 1/8" diameter probes 6, 9, 12, 18 and 24" long, and 3mm & 6mm diameter probes 200, 350 and 500mm long. These thermocouples can also be provided in other lengths.

With a variety of standard mounting threads, these probes can be easily configured to match your specific requirements. Fractionally sized 1/4" and 1/8" diameter probes are available with 1/2"NPT, 3/8"NPT, 1/4"NPT or with no mounting threads. Metric sized 3mm and 6mm diameter probes are available with M8x1, M10x1 or with no mounting threads. The non-threaded versions of the sensor can be used as-is or mounted into your process using one of Omega's line of Compression Fittings.

For use in thermowells, the M12-TC-SL version of this sensor is the preferred solution. The M12-TC-SL design includes a non-threaded M12TC style probe with a self-gripping spring and 1/2NPT threaded fitting to insure that the probe will contact the bottom of the thermowell bore without damaging the sensor. This insures that the sensor length will always be a perfect fit for your thermowell. See the M12-TC-SL page for additional information.

The thermocouple compensated M12 connector offers a quick and reliable method for connecting this sensor to your instrumentation. The M12 connector on these sensors is wired in accordance with the pin out shown in the accompanying figure. This pin out matches the wiring provided on Omega's Molded M12 Thermocouple Extension Cables so that the IEC or ANSI color code is maintained between the sensor and your instrumentation. A selection of Omega's M12 Extension Cables are included in the ordering table below.

Specifications:
  • Type J Thermocouples have a 304 SST sheath with a 316L SST housing with a temperature range of -40 to 600°C.
  • Type K Thermocouples have an Inconel 600 sheath with a 316L SST housing with a temperature range of -40 to 1150°C.
  • Thermocouple Output conforms to Special Limits of Error per ANSI/ASTM E230.
  • Fractional sizes are 1/4 and 1/8 inch diameters with standard lengths of 6, 9, 12, 18 and 24 inches.
  • Metric sizes are 6mm and 3mm diameters with standard lengths of 200, 350 and 500mm.
  • Insulation Resistance is 1 gigohm minimum at 100 VDC for ungrounded sensors.


  • Connect your M12 thermocouple probe to one of Omega's wide variety of in-stock controllers, data loggers, hand held thermometers, PLCs or other measurement or process control products to complete your measurement or control system.



    View the Thermocouple Accuracy and Color Code charts


    To Order (Specify Model Number)    
    expand list What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.
     
    Most Popular Models Highlighted!
     Part Number   Availability   Price   Description    Qty.
     Type J Fractional Sized Thermocouple Sensors
        M12JSS-1/8-U-6-A In Stock   $33.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/8" diamater by 6" long probe and no mounting threads.  
    Click to expand/minimize a list of what others bought with the M12JSS-1/8-U-6-B  M12JSS-1/8-U-6-B In Stock   $44.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/8" diamater by 6" long probe and 1/2NPT mounting thread.  
        M12JSS-1/8-U-6-C In Stock   $44.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/8" diamater by 6" long probe and 3/8NPT mounting thread.  
        M12JSS-1/8-U-6-D In Stock   $44.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/8" diamater by 6" long probe and 1/4NPT mounting thread.  
        M12JSS-1/4-U-6-A In Stock   $41.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/4" diamater by 6" long probe with no mounting threads.  
    Click to expand/minimize a list of what others bought with the M12JSS-1/4-U-6-B  M12JSS-1/4-U-6-B 1 Week   $52.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/4" diamater by 6" long probe and 1/2NPT mounting thread.  
        M12JSS-1/4-U-6-C In Stock   $52.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/4" diamater by 6" long probe and 3/8NPT mounting thread.  
        M12JSS-1/4-U-6-D In Stock   $52.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 1/4" diamater by 6" long probe and 1/4NPT mounting thread.  
     Type K Fractional Sized Thermocouple Sensors
        M12KIN-1/8-U-6-A 1 Week   $33.00    Type K Ungrounded Thermocouple with Inconel 600 Sheathed, 1/8" diamater by 6" long probe with no mounting threads.  
    Click to expand/minimize a list of what others bought with the M12KIN-1/8-U-6-B  M12KIN-1/8-U-6-B In Stock   $44.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 1/8" diamater by 6" long probe and 1/2NPT mounting thread.  
        M12KIN-1/8-U-6-C In Stock   $44.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 1/8" diamater by 6" long probe and 3/8NPT mounting thread.  
    Click to expand/minimize a list of what others bought with the M12KIN-1/8-U-6-D  M12KIN-1/8-U-6-D In Stock   $44.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 1/8" diamater by 6" long probe and 1/4NPT mounting thread.  
        M12KIN-1/4-U-6-A In Stock   $41.00    Type K Ungrounded Thermocouple with Inconel 600 Sheathed, 1/4" diamater by 6" long probe with no mounting threads.  
    Click to expand/minimize a list of what others bought with the M12KIN-1/4-U-6-B  M12KIN-1/4-U-6-B In Stock   $52.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 1/4" diamater by 6" long probe and 1/2NPT mounting thread.  
        M12KIN-1/4-U-6-C In Stock   $52.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 1/4" diamater by 6" long probe and 3/8NPT mounting thread.  
        M12KIN-1/4-U-6-D In Stock   $52.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 1/4" diamater by 6" long probe and 1/4NPT mounting thread.  
     Type J Metric Sized Thermocouple Sensors
        M12JSS-M3-U-200-A 1 Week   $41.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 3mm diamater by 200 long probe and no mounting threads.  
        M12JSS-M3-U-200-E 1 Week   $52.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 3mm diamater by 200mm long probe with M8x1 mounting thread.  
        M12JSS-M3-U-200-F 1 Week   $52.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 3mm diamater by 200mm long probe with M10x1 mounting thread.  
        M12JSS-M6-U-200-A 1 Week   $47.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 6mm diamater by 200 long probe and no mounting threads.  
        M12JSS-M6-U-200-E In Stock   $58.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 6mm diamater by 200mm long probe with M8x1 mounting thread.  
        M12JSS-M6-U-200-F In Stock   $61.00    Type J Ungrounded Thermocouple with 304 Stainless Steel sheathed, 6mm diamater by 200mm long probe with M10x1 mounting thread.  
     Type K Metric Sized Thermocouple Sensors
        M12KIN-M3-U-200-A In Stock   $41.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 3mm diamater by 200 long probe and no mounting threads.  
        M12KIN-M3-U-200-E In Stock   $52.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 3mm diamater by 200mm long probe with M8x1 mounting thread.  
        M12KIN-M3-U-200-F 1 Week   $61.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 3mm diamater by 200mm long probe with M10x1 mounting thread.  
        M12KIN-M6-U-200-A In Stock   $50.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 6mm diamater by 200 long probe and no mounting threads.  
        M12KIN-M6-U-200-E In Stock   $61.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 6mm diamater by 200mm long probe with M8x1 mounting thread.  
        M12KIN-M6-U-200-F In Stock   $61.00    Type K Ungrounded Thermocouple with Inconel 600 sheathed, 6mm diamater by 200mm long probe with M10x1 mounting thread.  
     Extension Cables
    Click to expand/minimize a list of what others bought with the M12C-SIL-K-S-F-1.5  M12C-SIL-K-S-F-1.5 In Stock   $11.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 1.5 meters Long with ANSI Color Code  
    Click to expand/minimize a list of what others bought with the M12C-SIL-K-S-F-3  M12C-SIL-K-S-F-3 In Stock   $14.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 3 meters Long with ANSI Color Code  
        M12C-SIL-K-S-F-5 In Stock   $18.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 5 meters Long with ANSI Color Code  
    Click to expand/minimize a list of what others bought with the M12C-SIL-K-S-F-10  M12C-SIL-K-S-F-10 In Stock   $28.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 10 meters Long with ANSI Color Code  
        M12C-SIL-KI-S-F-1.5 7 Weeks   $11.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 1.5 meters Long with IEC Color Code  
        M12C-SIL-KI-S-F-3 In Stock   $14.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 3 meters Long with IEC Color Code  
        M12C-SIL-KI-S-F-5 4 Weeks   $16.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 5 meters Long with IEC Color Code  
        M12C-SIL-KI-S-F-10 In Stock   $28.00    Type K Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 10 meters Long with IEC Color Code  
    Click to expand/minimize a list of what others bought with the M12C-SIL-J-S-F-1.5  M12C-SIL-J-S-F-1.5 In Stock   $11.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 1.5 meters Long with ANSI Color Code  
    Click to expand/minimize a list of what others bought with the M12C-SIL-J-S-F-3  M12C-SIL-J-S-F-3 In Stock   $13.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 3 meters Long with ANSI Color Code  
    Click to expand/minimize a list of what others bought with the M12C-SIL-J-S-F-5  M12C-SIL-J-S-F-5 3 Weeks   $16.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 5 meters Long with ANSI Color Code  
        M12C-SIL-J-S-F-10 In Stock   $28.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 10 meters Long with ANSI Color Code  
        M12C-SIL-JI-S-F-1.5 7 Weeks   $11.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 1.5 meters Long with IEC Color Code  
        M12C-SIL-JI-S-F-3 7 Weeks   $13.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 3 meters Long with IEC Color Code  
        M12C-SIL-JI-S-F-5 1 Week   $16.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 5 meters Long with IEC Color Code  
        M12C-SIL-JI-S-F-10 7 Weeks   $28.00    Type J Thermocouple Extension Cable with a Straight Female Connector One End and Flying Leads on the Other, 10 meters Long with IEC Color Code  
    All dollar amounts on this site are shown in US currency.

     Note: Options:
  • For Grounded Junction probe, change "U" to "G" in model number with no change in price.

  • For Dual element probes, add "-DUAL" to the end of the Model Number and multiply the price by 1.75.
  • For longer length Type J, 304 Stainless Steel sheathed probes, change the "-6" or "-200" in the model number to the required length and add $0.50 per inch (or 25mm) to the price.
  • For longer length Type K, Inconel 600 sheathed probes, change the "-6" or "-200" in the model number to the required length and add $0.65 per inch (or 25mm) to the price.

  • To add the spring loading kit for use in thermowells (self gripping spring with 1/2"NPT hex plug fitting), add "-SLK" after the "-A" in the model number and add $20 to the price.


  •  Ordering Example: (1) M12KIN-1/4-U-6-B Type K Thermocople with Inconel 600 Sheath, 1/4" Diameter by 6" Long Probe with 1/2NPT Mounting Fitting, $52.00,  plus (1) M12JSS-M6-U-200-A Type J Thermocouple with 304 Stainless Steel Sheath, 6mm Diameter by 200mm Long Probe and No Mounting Threads, $47.00, $52.00 + 47.00 = $99.00
     Part Number Builder
    (1) (2) (3) (4) (5) (6)   
    M
    M
    1
    1
    2
    2
    Qty:

    Option Descriptions
    (1) Thermocouple Type
      Select
    JSS for Type J with 304SST Sheath
    KIN for Type K with Inconel Sheath
    (2) Sheath Diameter
      Select
    -1/4 for 1/4 in. Diameter
    -1/8 for 1/8 in. Diameter
    -M3 for 3mm Diameter
    -M6 for 6mm Diameter
    (3) TC Junction Style
      Select
    -U for Ungrounded Junction (Standard)
    -G for Grounded Junction (Optional)
    (4) Sheath Length
      Select
    -6 for 6 inches (Standard with 1/4 in. and 1/8 in. Diameter Probes)
    -9 for 9 inches (Standard with 1/4 in. and 1/8 in. Diameter Probes)
    -12 for 12 inches (Standard with 1/4 in. and 1/8 in. Diameter Probes)
    -18 for 18 inches (Standard with 1/4 in. and 1/8 in. Diameter Probes)
    -24 for 24 inches (Standard with 1/4 in. and 1/8 in. Diameter Probes)
    -200 for 200mm (Standard with 3mm and 6mm Diameter Probes)
    -350 for 350mm (Standard with 3mm and 6mm Diameter Probes)
    -500 for 500mm (Standard with 3mm and 6mm Diameter Probes)
    (5) Mounting Thread
      Select
    -A for No Mounting Thread (Fractionally or Metric Sized Probes)
    -B for 1/2 in. NPT (Fractionally Sized Probes Only)
    -C for 3/8 in. NPT (Fractionally Sized Probes Only)
    -D for 1/4 in. NPT (Fractionally Sized Probes Only)
    -E for M8x1mm (Metric Sized Probes Only)
    -F for M10x1mm (Metric Sized Probes Only)
    (6) Number of Elements
      Select
    Nothing(leave field blank) for Single Element
    -DUAL for Dual Element
     NOTE: All combinations may not be valid, check spec sheet for valid part numbers.


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