
Spring Loaded Thermocouple 
Sensors with M12 Connectors
For Use in Thermowells
A
M12-TC-SL Series
U Type J, K, T and E 
Thermocouples with 304 
Stainless Steel Sheath 
U M12 A-Coded Pin 
Style Connectors with 
Compensated Pins 
for Easy Wiring when 
Combined with OMEGA’s 
M12 Thermocouple 
Extension Cables
U Fits All Standard 0.260" 
Bore Thermowells 
(Sold Separately)
U Probe Length = 
Thermowell Stem Length
U Adjustable Self-Gripping 
Spring Allows for Use 
in Shorter Length 
Thermowells
U Large Selection of 
Optional Thermowells 
and Extension Cables 
Available
38.1
(1.50)
Ø17
(0.66) REF
M12 
Connector
M12JSS-U-0600-SL shown 
smaller than actual size.
Thermowell sold 
separately. Visit 
omega.com/ 
260_commodity 
for details.
44.4
(1.75)
7
/
8
½ NPT
HEX
Adjustable 
Self-Gripping 
Spring
M12 Wiring
TC#1+
TC#1–
M12C-SIL-K-R-F-1.5 
mating cable sold 
separately.Visit 
omega.com/m12c  
for optional  
extension cables.
Thermowell Stem Length
Thermowell 
Sold Separately
Dimensions: mm (inch)
TC#2– 
(Optional)
TC#2+ 
(Optional)
Ø = diameter 
 To Order Visit omega.com/m12-tc-sl for Pricing and Details
    Sensor    
 Model No.  Thermocouple  Temperature Range†  Thermowell Stem Length
 M12(*)-U-0250-SL      2.50" 
 M12(*)-U-0400-SL      4" 
 M12(*)-U-0600-SL      6" 
 M12(*)-U-0900-SL      9" 
 M12(*)-U-1200-SL      12" 
 M12(*)-U-1500-SL      15"
(*) Insert “JSS”, “KSS”, 
“TSS” or “ESS” for 
thermocouple type with 
304 SS sheath
 M12(*)-U-1800-SL      18" 
 M12(*)-U-2400-SL      24"
† Temperature range of sensor only, thermowell selection will impact final temperature range of assembly. 
Notes: For dual element sensors, add “-DUAL” to the end of the model number and multiply price by 1.75.
For probe lengths above 24" change length in model number to required length in inches (25.50" = 2550) for an additional cost to the 24" price. 
Ordering Examples: M12KIN-U-0600-SL, Type K thermocouple and M12 connection, length to spring load into a thermowell with a 6" 
stem length. 
M12JSS-U-1200-SL, Type J thermocouple with 304 stainless steel sheath and M12 connection, length to spring load into a thermowell with a 
12" stem length.
JSS = -210 to 721°C 
KSS = -270 to 899°C 
TSS = -270 to 371ºC 
ESS = -270 to 899ºC 
M12 connector has an 85°C 
(185°F) max temperature 
A-1