EN Standard RTDs | McMaster-Carr

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65 Products

About Selecting Temperature Sensors

RTD Probes for Liquids and Gases

Obtain more precise and reliable liquid and gas temperature measurements than thermocouple probes. Some of these probes meet DIN standards for accuracy, meaning they’re precise even with fast temperature changes.

IP67-rated probes have plug connections that stand up to dust and temporary submersion. IP68- and IP69K-rated probes have plug connections that can handle brief submersion and harsh washdowns.

For technical drawings and 3-D models, click on a part number.

Probes

Probe

Cable

Probes
		Probe								Cables
RTD Type	Temperature Range, °F	Lg.	Dia.	Accuracy	Response Time, sec.	Environmental Rating	Specifications Met		Each		Each
4-Pin Micro M12 Plug Connection—316L Stainless Steel Probe
100 ohms	-40° to 300°	2"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	0000000	0000000	000000
100 ohms	-40° to 300°	2 3/4"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	3 7/8"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	5 7/8"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	6 1/4"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	7 7/8"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	9 7/8"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	10 1/4"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	13 3/4"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	14 1/8"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
100 ohms	-40° to 300°	22"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	6 1/4"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	6 1/4"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	10 1/4"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	10 1/4"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	14 1/8"	1/4"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	14 1/8"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000
1,000 ohms	-40° to 300°	22"	3/8"	±0.1%	3	IP68, IP69K	DIN EN 60751 Class A	0000000	000000	0000000	00000

Probes with Cable

Probe with Cable

		Probe
RTD Type	Temperature Range, °F	Lg.	Dia.	Accuracy	Response Time, sec.	Cable Length	Max. Cable Temperature, °F	Environmental Rating	Specifications Met		Each
4-Pin Micro M12 Plug Connection—316 Stainless Steel Probe
100 ohms	-145° to 1110°	3 7/8"	1/4"	±0.1%	34	6.5 ft.	480°	IP67	DIN EN 60751 Class A	0000000	0000000
100 ohms	-145° to 1110°	5 7/8"	1/4"	±0.1%	34	6.5 ft.	480°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-145° to 1110°	7 7/8"	1/4"	±0.1%	34	6.5 ft.	480°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-145° to 1110°	7 7/8"	1/4"	±0.1%	34	32 ft.	480°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-145° to 1110°	9 7/8"	1/4"	±0.1%	34	6.5 ft.	480°	IP67	DIN EN 60751 Class A	0000000	000000
1,000 ohms	-55° to 480°	2"	1/4"	±0.1%	37	0.5 ft.	480°	IP67	DIN EN 60751 Class A	0000000	000000
4-Pin Micro M12 Plug Connection—316L Stainless Steel Probe
100 ohms	-55° to 480°	1 5/8"	3/8"	±0.1%	39	6.5 ft.	480°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-40° to 190°	1 3/4"	1/4"	±0.1%	10	6.5 ft.	190°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-40° to 190°	1 3/4"	1/4"	±0.1%	10	16 ft.	190°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-40° to 190°	2"	3/8"	±0.1%	25	6.5 ft.	190°	IP67	DIN EN 60751 Class A	0000000	000000
100 ohms	-40° to 190°	2"	3/8"	±0.1%	25	16 ft.	190°	IP67	DIN EN 60751 Class A	0000000	000000
1,000 ohms	-40° to 190°	1 3/4"	1/4"	±0.1%	10	6.5 ft.	190°	IP67	DIN EN 60751 Class A	0000000	00000
1,000 ohms	-40° to 190°	2"	3/8"	±0.1%	25	6.5 ft.	190°	IP67	DIN EN 60751 Class A	0000000	000000

Bolt-On RTD Probes for Surfaces

For reliable temperature readings in high-vibration environments, these RTD probes bolt onto the surface of motors and other equipment.

Style A and B probes are rated IP67 for protection from dust and temporary submersion.

Probes that meet DIN EN 60751 adhere to industry standards for accuracy. Probes that meet MS202 (Method 204, Test Condition D) have been tested for use in vibration-heavy environments.

Micro M12 Plug Connection

				Probe					Cable
Style	RTD Type	Temp. Range, °F	Bolt Hole Dia.	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Environmental Rating	Specifications Met		Each
Stainless Steel Probe
A	100 ohms	-40° to 190°	1/2"	2"	7/16"	5/16"	±0.5%	15	6	Polyurethane Rubber	IP67	DIN EN 60751 Class A	0000000	0000000

Wire Ferrule Connection

				Probe					Cable		Wire Lead
Style	RTD Type	Temp. Range, °F	Bolt Hole Dia.	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Lg.	Gauge	No. of Wires	Environmental Rating	Specifications Met		Each
Stainless Steel Probe
B	100 ohms	-40° to 190°	1/4"	1 13/16"	7/16"	5/16"	±0.5%	39	6	Polyurethane Rubber	1"	22	4	IP67	DIN EN 60751 Class A	0000000	000000

Wire Leads Connection

				Probe					Cable		Wire Lead
Style	RTD Type	Temp. Range, °F	Bolt Hole Dia.	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Lg.	Gauge	No. of Wires	Specifications Met	Fasteners Included		Each
303 Stainless Steel Probe
C	100 ohms	-55° to 500°	5/32"	3/8"	1/2"	3/16"	±0.12%	10	3	PTFE	1/2"	26	3	DIN EN 60751 Class B; MS202 (Method 204, Test Condition D)	No	0000000	0000000
316/316L Stainless Steel Probe
D	100 ohms	-90° to 930°	5/32"	1 1/4"	5/16"	3/16"	±0.12%	10	3	Mica Glass	1/2"	22	3	DIN EN 60751 Class B; MS202 (Method 204, Test Condition D)	No	0000000	000000
300 Series Stainless Steel Probe
E	100 ohms	-90° to 930°	5/32"	1"	1/2"	3/16"	±0.12%	10	3	Mica Glass	1/2"	22	3	DIN EN 60751 Class B; MS202 (Method 204, Test Condition D)	No	0000000	000000
Nickel-Plated Copper Probe
F	100 ohms	-55° to 500°	17/64"	1"	1/2"	3/16"	±0.12%	10	3	PTFE	1/2"	26	3	DIN EN 60751 Class B; MS202 (Method 204, Test Condition D)	No	0000000	000000

Adhesive-Back RTD Probes for Surfaces

About the thickness of a dime, these RTD probes stick to surfaces in tight spaces to measure temperature.

Probes that meet DIN EN 60751 adhere to industry standards for accuracy. Probes that meet MIL-STD-108 are submersible, so they can monitor the temperature of water in tanks or containers.

		Probe					Cable		Wire Lead
RTD Type	Temp. Range, °F	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Lg.	Gauge	No. of Wires	Specifications Met		Each
Wire Leads Connection—Platinum Probe
100 ohms	-4° to 300°	9/16"	3/16"	1/16"	±0.12%	1.3	3	Silicone Rubber	1/2"	28	3	DIN EN 60751 Class B; MIL-STD-108	0000000	0000000
100 ohms	-4° to 350°	1/4"	1/4"	1/16"	±0.12%	0.15	3	PTFE	1/2"	28	3	DIN EN 60751 Class B	0000000	000000
100 ohms	-4° to 350°	5/8"	3/16"	1/16"	±0.12%	0.4	3	PTFE	1/2"	26	3	DIN EN 60751 Class B	0000000	000000
100 ohms	-4° to 350°	5/8"	3/16"	1/16"	±0.12%	1	3	PTFE	1/2"	26	3	DIN EN 60751 Class B	0000000	000000
100 ohms	-4° to 350°	5/8"	5/16"	1/16"	±0.12%	1.2	3	PTFE	1/2"	22	3	DIN EN 60751 Class B	0000000	000000
100 ohms	-4° to 350°	13/16"	3/8"	1/16"	±0.12%	0.9	3	PTFE	1/2"	26	3	DIN EN 60751 Class B	0000000	000000
100 ohms	-4° to 350°	1 1/4"	1"	1/16"	±0.12%	0.2	3	Silicone Rubber	1/2"	24	3	DIN EN 60751 Class B	0000000	000000
100 ohms	-4° to 350°	1 15/16"	3/4"	1/16"	±0.12%	0.1	3	PTFE	1/2"	24	3	DIN EN 60751 Class B	0000000	000000

Threaded RTD Probes for Surfaces

Thread these RTD probes into threaded holes in molds, dies, and other objects to measure their temperature.

Style A and B probes are rated IP67 for protection from dust and temporary submersion.

Probes that meet DIN EN 60751 adhere to industry standards for accuracy. Probes that meet MS202 (Method 204, Test Condition D) have been tested for use in vibration-heavy environments.

Micro M12 Plug Connection

			Thread		Probe					Cable
	RTD Type	Temp. Range, °F	Size	Pitch, mm	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Environmental Rating	Specifications Met		Each
Stainless Steel Probe
A	100 ohms	-20° to 350°	M5	0.8	15/16"	5/16"	3/16"	±0.5%	8	6	Silicone Rubber	IP67	DIN EN 60751 Class A	0000000	0000000
A	100 ohms	-20° to 350°	M6	1	15/16"	5/16"	3/16"	±0.5%	8	6	Silicone Rubber	IP67	DIN EN 60751 Class A	0000000	000000
A	100 ohms	-40° to 190°	M5	0.8	15/16"	5/16"	3/16"	±0.5%	8	6	Polyurethane Rubber	IP67	DIN EN 60751 Class A	0000000	000000
A	100 ohms	-40° to 190°	M6	1	15/16"	5/16"	3/16"	±0.5%	9	6	Polyurethane Rubber	IP67	DIN EN 60751 Class A	0000000	000000

Wire Ferrule Connection

			Thread		Probe					Cable		Wire Lead
	RTD Type	Temp. Range, °F	Size	Pitch, mm	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Lg.	Gauge	No. of Wires	Environmental Rating	Specifications Met		Each
Stainless Steel Probe
B	100 ohms	-20° to 300°	M12	1.5	1 3/16"	3/8"	11/16"	±0.5%	12	16	Silicone Rubber	1"	22	4	IP67	DIN EN 60751 Class A	0000000	0000000

Wire Leads Connection

				Probe			Cable		Wire Lead
	RTD Type	Temp. Range, °F	Thread Size	Lg.	Accuracy	Response Time, sec.	Lg., ft.	Material	Lg.	Gauge	No. of Wires	Specifications Met		Each
303 Stainless Steel Probe
C	100 ohms	-55° to 500°	1/4"-20	3/8"	±0.12%	10	3	PTFE	1/2"	26	3	DIN EN 60751 Class B; MS202 (Method 204, Test Condition D)	0000000	0000000

Signal-Averaging Adhesive-Back RTD Probes for Surfaces

Style B Shown Mounted

Measure the temperature of cylinders, pipes, and flat surfaces without installing an immersion probe and where a point sensor may be inaccurate. These RTD probes take multiple temperatures along the length of the probe and average them together for accuracy. About the thickness of a dime, they stick to surfaces in tight spaces.

Probes that meet DIN EN 60751 adhere to industry standards for accuracy.

			Probe					Cable		Wire Lead
	RTD Type	Temp. Range, °F	Lg.	Wd.	Thick.	Accuracy	Response Time, sec.	Lg., ft.	Material	Lg.	Gauge	No. of Wires	Specifications Met		Each
Wire Leads Connection—Platinum Probe
B	100 ohms	-4° to 350°	4"	3/8"	1/16"	±0.12%	0.6	3	Silicone Rubber	1/2"	26	3	DIN EN 60751 Class B	0000000	0000000

Threaded RTD Probe Transmitters for Liquids and Gases

Send temperature readings directly to programmable logic controllers (PLCs)—with a built-in 4-20mA transmitter, these RTDs don’t require a separate signal converter. They have an NPT male probe connection, so they’re ready to screw into thermowells and other fittings on pipe and tanks. Made of 316 or 316L stainless steel, they resist corroding from harsh cleaning chemicals. This stainless steel also protects the RTD sensor inside from impact. They are also often installed in bores to measure the temperature of molds and dies. CE marked, they meet European safety standards.

Fixed RTDs can be used directly in liquid or steam because they’re welded to their fitting for a liquid-tight seal.

RTDs with IO Link let you remotely adjust settings, read measurements, and receive error messages when connected to a PLC via an IO Link controller (not included). These RTDs meet DIN EN 60751 Class A standards for temperature accuracy. UL and C-UL listed, they meet American and Canadian safety standards.

For technical drawings and 3-D models, click on a part number.

4-Pole Micro M12 Plug Connection

Probe Transmitters
	Probe				Probe Connection												Cables with Socket
RTD Type	Lg.	Dia.	Accuracy	Response Time, sec.	Pipe Size	Thread Type	Gender	DC Voltage	Max. Pressure, psi	Output Current	Communication Protocol	Overall Lg.	Fitting Material	Temp. Range, °F		Each		Each
Fixed 316L Stainless Steel Probe (IP67, IP68, IP69K)
1,000 ohms	11/16"	1/4"	±0.5%	3	1/2	NPT	Male	18-32	5,800	4-20mA	IO Link	4 1/8"	316L Stainless Steel	0° to 300°	0000000	0000000	0000000	000000
1,000 ohms	1 1/2"	1/4"	±0.5%	3	1/2	NPT	Male	18-32	4,350	4-20mA	IO Link	5"	316L Stainless Steel	0° to 300°	0000000	000000	0000000	00000
1,000 ohms	3 1/2"	1/4"	±0.5%	3	1/2	NPT	Male	18-32	4,350	4-20mA	IO Link	7"	316L Stainless Steel	0° to 300°	0000000	000000	0000000	00000
1,000 ohms	5 7/16"	1/4"	±0.5%	3	1/2	NPT	Male	18-32	4,350	4-20mA	IO Link	8 7/8"	316L Stainless Steel	0° to 300°	0000000	000000	0000000	00000

Threaded RTD Probe Transmitters with Digital Display for Liquids and Gases

View temperature readings and adjust settings directly on these RTD probe transmitters. To communicate with programmable logic controllers (PLCs), they have a built-in transmitter with two outputs. One output can send a digital switching signal or use IO Link protocol with the addition of an IO Link controller (not included). The other can send a digital switching signal or a 4-20mA analog signal. The different output options make these RTDs good for a wide range of uses, including operating far away from a controller, taking automated measurements, and providing inputs to switching applications. All have an NPT threaded fitting welded onto the probe, so they’re ready to screw into containers, tanks, and pipes. Probe length is fixed. Made of 316L stainless steel, they are highly corrosion resistant.

These RTDs meet DIN EN 60751 Class A standards for temperature accuracy. UL Listed, C-UL Listed, and CE Marked, all meet American, Canadian, and European safety standards.

For technical drawings and 3-D models, click on a part number.

Probe Transmitters

		Probe							Configurable Digital Output			Configurable Analog/Digital Output
RTD Type	Temp. Range, °F	Lg.	Dia.	Accuracy	Response Time, sec.	Plug Type	Probe Connection Pipe Size	Max. Pressure, psi	No. of	Communication Protocol	Signal Type	No. of	Current	Signal Type	Overall Lg.		Each
NPT Male Probe Connection
316L Stainless Steel Probe with Plastic Head (IP67)
1,000 ohms	-55° to 300°	1/2"	1/4"	±0.75%	3	4-Pole Micro M12	1/4	5,800	1	IO Link	NPN/PNP	1	4-20mA	NPN/PNP	4 7/8"	0000000	0000000
1,000 ohms	-55° to 300°	1/2"	1/4"	±0.75%	3	4-Pole Micro M12	1/2	4,350	1	IO Link	NPN/PNP	1	4-20mA	NPN/PNP	4 7/8"	0000000	000000
1,000 ohms	-55° to 300°	1 1/4"	1/4"	±0.75%	3	4-Pole Micro M12	1/4	5,800	1	IO Link	NPN/PNP	1	4-20mA	NPN/PNP	5 5/8"	0000000	000000
1,000 ohms	-55° to 300°	1 1/4"	1/4"	±0.75%	3	4-Pole Micro M12	1/2	4,350	1	IO Link	NPN/PNP	1	4-20mA	NPN/PNP	5 5/8"	0000000	000000
1,000 ohms	-55° to 300°	3 1/4"	1/4"	±0.75%	3	4-Pole Micro M12	1/2	3,625	1	IO Link	NPN/PNP	1	4-20mA	NPN/PNP	7 5/8"	0000000	000000
1,000 ohms	-55° to 300°	5 3/16"	1/4"	±0.75%	3	4-Pole Micro M12	1/2	3,625	1	IO Link	NPN/PNP	1	4-20mA	NPN/PNP	9 1/2"	0000000	000000

Cables with M12 Socket and Wire Leads

Cable Lead Lg., ft.	Voltage	Current	Face Diameter		Each
12	250V AC/250V DC	4A	0.3"	0000000	000000

Sanitary RTD Probe Transmitters with Digital Display for Liquids and Gases

Check the temperature of liquids in hygienic applications such as food or pharmaceutical lines and tanks. Certified by 3-A to meet sanitary design standards, the parts of these probes that will touch liquid are highly polished to minimize spots where bacteria could grow. They're made of stainless steel, so they won't corrode from harsh cleaners and sanitizers. The housing is IP69K rated, meaning it withstands high-pressure, high-temperature washdowns that are common in hygienic cleaning practices. They have a flange that will connect to sanitary quick-clamp fittings (also known as tri-clamp fittings); they're easy to connect and remove from your line.

Program these probes with the touch screen, and select one of three colors as a visual alert for events in your process such as irregular or fluctuating temperatures. The head swivels 345° and the face rotates all the way around, so you can mount the sensor at any angle and still see the display. To trigger actions in your process line, connect these probes to remote displays, programmable logic controllers (PLCs), and other control equipment with the M12 plug. These probes meet DIN EN 60751, an industry standard for accuracy. They’re also CE marked, meaning they meet European Union safety standards.

For technical drawings and 3-D models, click on a part number.

Three-Color Display

		Probe										Probe Transmitters		Cables with Socket
RTD Type	Temperature Range, °F	Lg.	Dia.	Flange OD	Accuracy	Response Time, sec.	Plug Type	DC Voltage	Max. Pressure, psi	Output Current	Overall Lg.		Each		Each
316L Stainless Steel Probe with 304 Stainless Steel Head (IP69K)
For 1 1/2" Tube OD
100 ohms	-55° to 480°	2"	5/16"	1.988"	±0.1%	25	5-Pole Micro M12	8-35	580	4-20mA	6 3/4"	0000000	0000000	0000000	000000