Thermocouple Assemblies | McMaster-Carr

	Thermocouple Type Thermocouple Type

	Probe Length Probe Length

	Maximum Temperature Maximum Temperature

	For Use With For Use With

Gases

Liquids

	Probe Diameter Probe Diameter

3/16"

1/4"

1/2"

	Connection Type Connection Type


Screw Terminal	Wire Leads

	Probe Material Probe Material

Stainless Steel

Ceramic

Nickel

	For Probe OD For Probe OD

	Material Material

	Sensor Type Sensor Type

Ungrounded

Grounded

	Pipe Size Pipe Size

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Overall Length Overall Length

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Minimum Temperature Minimum Temperature

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Head Material Head Material

Aluminum

Iron

	Response Time Response Time

4.4 sec.

5 sec.

Not Rated

	Thread Type Thread Type

NPT

BSPT

UNF

	Environment Environment

	Maximum Pressure Maximum Pressure

N/A @ N/A

Not Rated

	Environmental Rating Environmental Rating

NEMA 4X

IP68

NEC Class I Divisions 1, 2
Groups A, B, C, D

NEC Class II Divisions 1, 2
Groups E, F, G

NEC Class III Divisions
1, 2

IEC Zone 1 Groups IIC, IIB,
IIA

IEC Zone 21 Groups IIIC,
IIIB, IIIA

IP66

NEC Zone 1 Groups IIC,
IIB, IIA

NEC Zone 21 Groups IIIC,
IIIB, IIIA

	For Thermocouple Wire Type For Thermocouple Wire Type

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296 Products

About Selecting Temperature Sensors

Heavy Duty Threaded Thermocouple
Probes for Liquids and Gases

To withstand harsh environments, a protective head seals out dust and moisture and thick probe walls reduce wear on the sensing element.

Threaded Thermocouple Probe
Transmitters for Liquids and Gases

Send temperature readings from tanks, containers, and pipes to devices such as remote displays and programmable logic controllers (PLCs) without the need for a separate thermocouple transmitter.

Threaded Thermocouple Probe Transmitters
with Thermowell for Liquids and Gases

Measure the temperature of liquids and gases without damaging the probe on these transmitters. An included thermowell shields the probe from vibration, corrosion, and shocks in tanks and pipes.

Threaded Thermocouple Probes with
Thermowell for Liquids and Gases

The included thermowell protects the probe from vibration, corrosion, and shock in tanks and pipelines.

Remote-Mount Threaded Thermocouple
Probe Transmitters for Liquids and Gases

Remotely monitor the temperature of liquids and gases in hard-to-access, hot, and high-vibration areas.

Cut-to-Length Thermocouple
Probes for Liquids and Gases

Trim these probes to the exact length you need with a pipe cutter.

Terminal Blocks for Thermocouple Wire

Connect thermocouples to extension wire or instrumentation.

Adjustable Thermocouple and
RTD Compression Fittings

Alter probe immersion depth with these fittings that can be repositioned along the probe sheath.

Thermocouple and RTD Fittings

Adapt unthreaded thermocouple and RTD connections for use with threaded tanks and connection heads.

Thermocouple and RTD Connection Heads

A removable cap seals out dust and moisture and provides easy access to sensor connections.