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. Please Note That The Connector End of The Thermocouple Is Rated for Use From -50 To 85°C.
A Variety of Thermocouple Extension Cables are Available For Installing Your Thermocouple Probe
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.
Type J Thermocouples have a 304 SST sheath with a 316L SST housing with a temperature range of -40 to
600°C at the probe end (see connector temperature range below).
Type K Thermocouples have an Inconel 600 sheath with a 316L SST housing with a temperature range of -40 to
1150°C at the probe end (see connector temperature range below).
M12 Connector has a temperature range of -50 to 90°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
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, $53.00 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, $48.00, $53.00 + 48.00 = $101.00
Part Number Builder
Build Your Part Number Below
Thermocouple Type select from: JSS for Type J with 304SST Sheath KIN for Type K with Inconel Sheath
Sheath Diameter select from: -1/4 for 1/4 in. Diameter -1/8 for 1/8 in. Diameter -M3 for 3mm Diameter -M6 for 6mm Diameter
TC Junction Style select from: -U for Ungrounded Junction (Standard) -G for Grounded Junction (Optional)
Sheath Length select from: -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)
Mounting Thread select from: -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)
Number of Elements select from: 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.