1/4 Pipe Size Temperature Switches

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15 Products

Adjustable-Reset Electronic Temperature Switches


Adjustment Rings

An adjustable reset lets you control the amount of temperature change, also known as deadband and differential, before these switches reset. Twist the rings to select the setpoint temperature and reset temperature anywhere within the setpoint range. When they reach the set temperature, they send an electronic signal to your programmable logic controller (PLC) to turn equipment on or off. Because they control two circuits, they turn one device from off to on (normally open) and another from on to off (normally closed). An LED illuminates to indicate they’re switching. These switches are often used in control and automation in hydraulics, pneumatics, air-conditioning, and refrigeration applications. Made of stainless steel, they resist corrosion and chemicals.

Install these switches directly into tanks, pipelines, and other process components using their threaded probe. They have a micro M12 plug connection and are compatible with micro M12 sockets, so you can quickly connect and disconnect them. After selecting your setpoint, tighten the locking ring to prevent unintentional changes.

IP rated, these switches seal out dust and water from temporary submersion. They also meet U.S., Canadian, and European safety standards.

To view switch wiring diagrams, select a part number and click Product Detail.

							Probe			Electrical
	Temp. Range	Approx. Difference Between Set Point and Reset Point	Temperature Accuracy	Actuation Tolerance	Signal Output	Max. Switching Current @ Voltage	Dia.	Lg.	Max. Pressure, psi	Connection	No. of Poles	Enclosure Rating	Features		Each
2 Circuits Controlled—1 Off and 1 On







				Threaded Stainless Steel Probe—1/4 BSPP Male

				0° F to 280° F/-20° C to 140° C	Adjustable	±5° F/±3° C	-1% to 1%	PNP	500 mA @ 32V DC	1/4"	1 7/8"	5,800	Micro M12	4	IP67	Adjustment Lock, LED Indicator	00000000	0000000




						Threaded Stainless Steel Probe—1/4 NPT Male

						0° F to 280° F/-20° C to 140° C	Adjustable	±5° F/±3° C	-1% to 1%	PNP	500 mA @ 32V DC	1/4"	1 7/8"	5,800	Micro M12	4	IP67	Adjustment Lock, LED Indicator	00000000	000000

Micro M12 Socket Connectors with Cable

							Housing Thread
4	0.3"	250V AC/250V DC	4	22	0.25"	PVC	M12	1	Metric	0 to 220	0000000	000000

Electronic Temperature Switches with Digital Display

A digital display makes it easy to monitor the temperature and control when these switches turn heating equipment on and off. They have an adjustable reset, so you can change the temperature range between when they activate and deactivate, commonly referred to as deadband and differential. Use the keypad to adjust the setpoint and reset point anywhere on the setpoint range. They produce an electronic signal that is often used to communicate with a programmable logic controller (PLC), so they're common in control and automation applications. Install them directly into tanks, pipelines, and other process components using their threaded probe.

These switches have a micro M12 plug, so you can quickly connect and disconnect them.

Rated IP65 and IP67, these switches protect against dust and water from washdowns and temporary submersion. They’re also UL listed, C-UL listed, and CE marked, so they meet U.S., Canadian, and European safety standards.

							Probe			Electrical
	Temp. Range	Approx. Difference Between Set Point and Reset Point	Temperature Accuracy	Actuation Tolerance	Signal Output	Max. Switching Current @ Voltage	Dia.	Lg.	Max. Pressure, psi	Connection	No. of Poles	Enclosure Rating	Certification		Each
2 Circuits Controlled—2 Off or 2 On







				Threaded Stainless Steel Probe—1/4 NPT Male

				0° F to 170° F/-20° C to 80° C	Adjustable	±0.6° F/±0.9° C	-0.5% to 0.5%	PNP	250 mA @ 35V DC	1/4"	1"	2,100	Micro M12	4	IP65, IP67	UL Listed, C-UL Listed, CE Marked	0000000	0000000


				0° F to 240° F/-20° C to 120° C	Adjustable	±0.8° F/±1° C	-0.5% to 0.5%	PNP	250 mA @ 35V DC	1/4"	6"	725	Micro M12	4	IP65, IP67	UL Listed, C-UL Listed, CE Marked	0000000	000000

Electronic Insertion-Mount Flow Switches

Instead of disassembling your system for inline installation, thread these flow switches onto a mounting adapter (sold separately) and insert them into a pipe tee or pipe outlet. They send digital signals to your programmable logic controller (PLC) to activate automated controls or alarms when they reach a set flow rate. To calculate the flow rate, they generate a small amount of heat, then measure the cooling effect your liquid or gas has on it. This makes them ideal in applications with fluctuating temperatures. Use the buttons on the display to adjust the set point and other settings. These switches are accurate in any mounting position.

IP65 rated switches protect against dust and washdowns. IP67 rated switches withstand temporary submersion.

		Flow Set Point									1 13/16" Probe Length
	For Pipe Size	For Liquids, gpm	For Gas, scfm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage, V DC	Max. Switching Current @ Voltage	Body Ht.	Enclosure Rating	Certification		Each
304 Stainless Steel Body with 316 Stainless Steel Fittings







				1 Digital NPN Signal Output

				1/4 1/2 3/4 1	0.02 to 1.5 0.05 to 4.9 0.13 to 12.7 0.23 to 23	0.14 to 2 0.54 to 8.05 1.21 to 18.11 2.15 to 32.21	4,300 psi @ 70° F	-10 to 175	36	250 mA @ 19V DC 250 mA @ 36V DC	2 11/16"	IP65, IP67	C-UL Listed UL Listed CE Marked	0000000	0000000




						1 Digital PNP Signal Output

						1/4 1/2 3/4 1	0.02 to 1.5 0.05 to 4.9 0.13 to 12.7 0.23 to 23	0.14 to 2 0.54 to 8.05 1.21 to 18.11 2.15 to 32.21	4,300 psi @ 70° F	-10 to 175	36	250 mA @ 36V DC 250 mA @ 18V DC	2 11/16"	IP65, IP67	C-UL Listed UL Listed CE Marked	0000000	000000




								2 Digital NPN Signal Output

								1/4 1/2 3/4 1	0.02 to 1.5 0.05 to 4.9 0.13 to 12.7 0.23 to 23	0.14 to 2 0.54 to 8.05 1.21 to 18.11 2.15 to 32.21	4,300 psi @ 70° F	-10 to 175	36	250 mA @ 19V DC 250 mA @ 36V DC	2 11/16"	IP65, IP67	C-UL Listed UL Listed CE Marked	0000000	000000




										2 Digital PNP Signal Output

										1/4 1/2 3/4 1	0.02 to 1.5 0.05 to 4.9 0.13 to 12.7 0.23 to 23	0.14 to 2 0.54 to 8.05 1.21 to 18.11 2.15 to 32.21	4,300 psi @ 70° F	-10 to 175	36	250 mA @ 36V DC 250 mA @ 18V DC	2 11/16"	IP65, IP67	C-UL Listed UL Listed CE Marked	0000000	000000

Mounting Adapters

Threaded Fitting

Connection

	Thread Type	Gender	Lg.	Material		Each
Threaded Fitting Connection



	1/4	NPT	Male	1 7/16"	316 Stainless Steel	0000000	000000


	1/2	NPT	Male	1 1/8"	316 Stainless Steel	0000000	00000
	3/4	NPT	Male	15/16"	304 Stainless Steel	0000000	00000
	1	NPT	Male	1 3/8"	304 Stainless Steel, Brass	0000000	00000

Dual-Setpoint Electronic Temperature Switches


Adjustment Rings	1 7/8" Probe

Send signals to trigger two different processes, each with their own set temperatures. For example, use one setpoint to turn a heater on and off at one temperature and another to activate an alarm if the temperature rises too far above the cutoff point. Twist the outer ring to adjust your setpoints—no need for tools. After choosing your setpoint, tighten the locking ring to prevent unintentional changes. Once the setpoint is reached, an LED illuminates, indicating the switching status. The threaded probe installs directly into tanks, pipelines, and other process components.

These switches send an electronic PNP signal to your programmable logic controller (PLC), so they’re often used in control and automation applications. They have a micro M12 plug connection and are compatible with micro M12 sockets, allowing you to quickly connect and disconnect the switch.

They are rated IP67 for protection from dust and temporary submersion.

To view switch wiring diagrams, select a part number and click Product Detail.

							Probe			Electrical
	Temp. Range	Approx. Difference Between Setpoint and Reset Point	Temperature Accuracy	Actuation Tolerance	Signal Output	Max. Switching Current @ Voltage	Dia.	Lg.	Max. Pressure, psi	Connection	No. of Poles	Enclosure Rating	Features		Each
2 Circuits Controlled—2 Off







				Threaded Stainless Steel Probe—1/4 BSPP Male

				0° F to 280° F/-20° C to 140° C	9° F/5° C	±5° F/±3° C	-1% to 1%	PNP	500 mA @ 32V DC	1/4"	1 7/8"	5,800	Micro M12	4	IP67	Adjustment Lock, LED Indicator	00000000	0000000




						Threaded Stainless Steel Probe—1/4 NPT Male

						0° F to 280° F/-20° C to 140° C	9° F/5° C	±5° F/±3° C	-1% to 1%	PNP	500 mA @ 32V DC	1/4"	1 7/8"	5,800	Micro M12	4	IP67	Adjustment Lock, LED Indicator	00000000	000000

Micro M12 Socket Connectors with Cable

							Housing Thread
No. of Poles	Face Dia.	Voltage	Current, amp	Wire Lead AWG	Cable OD	Housing Material	Size	Pitch, mm	Type	Temp. Range, ° F		Each
4	0.3"	250V AC/250V DC	4	22	0.25"	PVC	M12	1	Metric	0 to 220	0000000	000000