3/4 Pipe Size Flow Switches

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49 Products

Fixed-Set-Point Insertion-Mount Flow Switches

Easy to install, these flow switches come already set to a specific set point and don’t require you to disassemble your pipeline. Instead of mounting them inline, insert them into an unthreaded PVC pipe tee or pipe outlet in large-diameter pipe. They have a paddle that’s pushed as your liquid moves through to determine flow. When the paddle reaches a set position determined by the set point, it activates or deactivates equipment. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). IP rated, they seal out dust and can be lightly rinsed.

They should be mounted vertically into a horizontal pipeline, so liquid pushes the paddle. Secure them with PVC cement and primer (not included).

These flow switches are calibrated with water. You can use them with other liquids, but they may not measure accurately if the liquid’s viscosity differs from water.

	For Pipe Size	Set Point, gpm	Max. Flow Rate, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage	Max. Switching Current @ Voltage	Body Ht.	Enclosure Rating	Specs. Met		Each
Noryl Body with Socket-Connect PVC Fittings



	3/4	3/4	1.94	21	160 psi @ 70° F	-13 to 212	230V AC/48V DC	1 amp @ 230V AC 1 amp @ 48V DC	2 1/2"	IP65	UL 508	00000000	0000000


	3/4	1 1 1/4	2.7, 6.8	31, 40	160 psi @ 70° F	-13 to 212	230V AC/48V DC	1 amp @ 230V AC 1 amp @ 48V DC	2 1/2"	IP65	UL 508	00000000	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

Insertion-Mount Flow Switches

Socket

Connection

with IP65

Rating

Avoid complicated inline installation—these flow switches insert into a tee or pipe outlet, so you don’t need to disassemble your pipeline. They have a paddle that’s pushed as your liquid moves through to determine flow. When the paddle reaches a set position determined by the set point, it activates or deactivates equipment. They are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). They should be mounted vertically into a large-diameter horizontal pipeline, so liquid pushes the paddle.

These flow switches are calibrated with water. You can use them with other liquids, but they may not measure accurately if the liquid’s viscosity differs from water.

Choose a fitting material that is compatible with the liquid you're running through your line.

Noryl Body—Switches with a Noryl body have a paddle that you trim to adjust the set point. The more you trim, the higher the set point.

Socket-Connect Fitting Connection—Socket-connect flow switches bond to an unthreaded PVC pipe tee or pipe outlet with PVC cement and primer (not included).

Noryl Fitting—Noryl fittings work with a wide range of chemicals.

IP65 Enclosure Rating—IP65 rated switches seal out dust and can be lightly rinsed.

	Paddle Material	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Body Ht.	Enclosure Rating	Specs. Met		Each
Noryl Body with 3/4 Socket-Connect Noryl Fittings







	Set-Point-Adjustment Trimmable Paddles

	1 1/2 2 3	7.7 to 19.3 10.3 to 21 16.5 to 52	110, 150, 390	Noryl	160 psi @ 70° F	-13 to 212	1 amp @ 230V AC 1 amp @ 48V DC	2 1/2"	IP65	UL 508	0000000	0000000


	1 1/2 2 3	7.9 to 15 10 to 22 18 to 50	144, 240, 650	301 Stainless Steel	160 psi @ 70° F	-13 to 212	1 amp @ 230V AC 1 amp @ 48V DC	2 1/2"	IP65	UL 508	00000000	000000

Fixed-Set-Point Flow Switches

Style E

Since they come factory set to a specific set point, these switches are easier to install than adjustable flow switches. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. They’re accurate in any mounting position.

These switches are calibrated with and measure water accurately. They can also be used with other liquids by applying your liquid’s specific-gravity conversion factor to calculate the new set point.

Choose a fitting material that is compatible with the liquid you intend to run through your line.

90° Elbow

Style E

Polypropylene Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.

SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).

	Gender	Set Point, gpm	Approx. Difference Between Set Point and Reset Point, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Mounting Position		Each
Polypropylene Body with Polypropylene Fittings







	SPST

	E	3/4	NPT	Female	0.25	0.05	100 psi @ 70° F	0 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	0000000	0000000


	E	3/4	NPT	Female	0.5	0.1	100 psi @ 70° F	0 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	0000000	000000
	E	3/4	NPT	Female	1	0.2	100 psi @ 70° F	0 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	0000000	000000

Electronic Flow Switches

When these switches reach a set flow rate, they send digital signals to your programmable logic controller (PLC) to activate automated controls or alarms. Use the adjustment screw to select their set point. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. They must be mounted horizontally to function correctly. IP rated, they withstand dust, washdowns, and temporary submersion.

	Temp. Range, ° F	Voltage, V DC	Max. Switching Current @ Voltage	End-to-End Lg.	Enclosure Rating	Certification		Each
Aluminum/Brass/Plastic Body with Threaded Nickel-Plated Brass Fittings







	1 PNP Signal Output

	3/4 NPT Female	0.26 to 6.6	360 psi @ 70° F	32 to 185	30	100 mA @ 30V DC	3"	IP65, IP67	C-UL Listed UL Listed CE Marked	0000000	0000000

Contactless Flow Transmitters

Using ultrasonic waves, these transmitters measure the flow rate of your liquid from outside your pipe. They're a good choice for applications where you need to retrofit your system or avoid liquid coming into contact with the transmitter. Also known as transducers, these transmitters convert measurements to an electrical pulse that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs). The pulse outputs match the input voltage of the transmitter. The higher the flow, the more pulses they send. For your receiving device to interpret the signal, you will need to calibrate it for the measurement range and output signal of the transmitter. They only give accurate readings within the rated measurement range. Configure them for either a 4-20mA or digital pulse output when installing.

A digital display makes it easy to check flow rate and configure settings. Clamp these transmitters onto your pipe with the included mounting hardware and gel pads. They measure flow no matter the mounting orientation.

These transmitters are calibrated with water but can be used with other liquids and will generally measure accurately, even if they differ in viscosity and density. You can recalibrate them in the field for accurate readings on pipe and operating conditions.

			Flow Range for Pipe Size, gpm						Input Voltage
	Flow Measurement Type	For Pipe Size	3/4	2	4	End-to-End Lg.	Accuracy	Temp. Range, ° F	Min., V DC	Max.	Mounting Position	Field Recalibratable	Enclosure Rating		Each
One Digital Pulse Output and One 4-20 mA Analog Transmitter Output—Wire Lead Connection







				Polycarbonate Body

				Ultrasonic	3/4 to 4	0 to 45	0 to 320	0 to 1,285	9 3/4"	±3%	32 to 185	12	24V AC/24V DC	Any Angle	Yes	IP54	0000000	000000000

Fixed-Set-Point Hazardous-Location Flow Switches

Safe to use where flammable gases and combustible dust may be present, these switches activate or deactivate when your flow reaches a factory-set level. All are UL listed for hazardous environments. Because their set point is fixed, they’re ready to go, making them easy to install. They actuate when your flowing liquid or gas pushes their paddle into a set position. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They must be mounted horizontally to function accurately.

These switches are calibrated with water and air. They can also be used with other liquids and gases but may not measure accurately if their viscosity is significantly different.

		Set Point						Conduit
	Pipe Connections	For Liquids, gpm	For Gas, scfm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage, V AC	Max. Switching Current @ Voltage	Trade Size	Thread Type	Gender	End-to-End Lg.	Enclosure Rating	Certification		Each
304 Stainless Steel Body with Threaded 304 Stainless Steel Fittings



		3/4 NPT Female	2	10	2,000 psi @ 70° F	-4 to 220	120/240	5 amp @ 120V AC	3/4	NPT	Male	2 5/8"	NEMA 4	UL Listed CE Marked	00000000	0000000


		Brass Body with Threaded Brass Fittings



				3/4 NPT Female	2	10	250 psi @ 70° F	-4 to 220	120/240	5 amp @ 120V AC	3/4	NPT	Male	2 3/8"	NEMA 4	UL Listed CE Marked	00000000	000000

Flow Switches

Activate or deactivate equipment when your flow rate reaches a set point. These switches have an adjustment screw to select your specific flow rate within the set point range. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They’re accurate in any mounting position.

90° Elbow

							Conduit
	Pipe Connections	Flow Set Point, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage, V AC	Max. Switching Current @ Voltage	Trade Size	Thread Type	Gender	Port-to-Port Lg.		Each
Bronze Body



		3/4 NPT Female	0.75 to 4	400 psi @ 70° F	-20 to 180	120/240	200 mA @ 240V AC 400 mA @ 120V AC	1/2	NPT	Male	1 3/8"	0000000	0000000


		3/4 NPT Female	2 to 8	400 psi @ 70° F	-20 to 180	120/240	200 mA @ 240V AC 400 mA @ 120V AC	1/2	NPT	Male	1 3/8"	0000000	000000
		3/4 NPT Female	7 to 14	400 psi @ 70° F	-20 to 180	120/240	200 mA @ 240V AC 400 mA @ 120V AC	1/2	NPT	Male	1 3/8"	0000000	000000

Flow Switches with Sight

For monitoring flow at a glance, these switches have a plastic window with a rotor indicator that spins when there’s flow. They activate or deactivate equipment when the flow rate reaches your set point. Tighten or loosen the adjustment screw to choose your set point anywhere within the range. To measure flow, they count how many times the turbine turns as liquid flows through. Use them only with clean, low-viscosity liquids to prevent clogging the turbine and other damage. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed).

These switches are calibrated with water. They can also be used with other liquids but may not measure accurately if their viscosity is significantly different.

Choose a fitting material that is compatible with the liquid you're running through your line.

316 Stainless Steel Fitting and Brass Fitting—Brass and 316 stainless steel fittings resist impact better than polypropylene fittings.

Any-Angle Mount—Flow switches with any-angle mounting position will measure accurately no matter how you orient them in your system.

	Max. Switching Current @ Voltage	Mounting Position	End-to-End Lg.	Certification		Each
Brass Body with Brass Fittings







	3/4 NPT Female

	5 to 30	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3 15/16"	CE Marked UL Recognized Component	0000000	0000000


	316 Stainless Steel Body with 316 Stainless Steel Fittings







					3/4 NPT Female

					1.5 to 15	200 psi @ 70° F	20 to 225	5 amp @ 120V AC 5 amp @ 240V AC	Horizontal	5 1/4"	CE Marked VDE Certified	00000000	000000


					5 to 30	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3 15/16"	CE Marked UL Recognized Component	0000000	000000
					5 to 50	200 psi @ 70° F	20 to 225	5 amp @ 120V AC 5 amp @ 240V AC	Horizontal	5 1/4"	CE Marked VDE Certified	00000000	000000

Variable-Pressure Flow Switches

Accurate even in applications where pressure fluctuates regularly, these flow switches split flow into two paths and measure their difference in pressure drop to calculate the flow rate of liquid. They activate or deactivate equipment when the flow rate reaches your set point. Tighten or loosen the adjustment screw to choose your set point anywhere within the range. They measure accurately no matter their mounting position. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). Rated NEMA 4X and IP66, they seal out dust and protect against washdowns and corrosion.

These switches are calibrated with water. They can also be used with other liquids but may not measure accurately if their viscosity is significantly different.

	Voltage	Max. Switching Current @ Voltage	Conduit Trade Size	End-to-End Lg.		Each
Bronze Body







	3/4 NPT Female

	0.5 to 6	400 psi @ 70° F	-30 to 212	120V AC/175V DC	180 mA @ 120V AC 250 mA @ 175V DC	1/2	3 1/16"	00000000	0000000


	1.5 to 10	400 psi @ 70° F	-30 to 212	120V AC/175V DC	180 mA @ 120V AC 250 mA @ 175V DC	1/2	3 1/16"	00000000	000000
	2 to 15	400 psi @ 70° F	-30 to 212	120V AC/175V DC	180 mA @ 120V AC 250 mA @ 175V DC	1/2	3 1/16"	00000000	000000
	3 to 20	400 psi @ 70° F	-30 to 212	120V AC/175V DC	180 mA @ 120V AC 250 mA @ 175V DC	1/2	3 1/16"	00000000	000000

Flow and Temperature Transmitters

Variable Area Flow

Measurement

Vortex Flow

Measurement

Send flow rate and temperature measurements simultaneously to a programmable logic controller (PLC), data logger, or other receiving device. Used to monitor status or control equipment, these transmitters, also known as transducers, convert measurements to an electrical signal that is interpreted by receiving devices. As flow or temperature increases, the output signal increases. For your receiving device to interpret the signal, you will need to calibrate it for the measurement range and output signal of the transmitter. They only give accurate readings within the rated measurement range. Mount them inline with your pipe system. They’ll measure flow correctly in any mounting orientation.

A digital display makes it easy to view readings and adjust settings at the source. To change settings and receive error messages remotely from your PLC or computer, program one of the outputs to use IO Link. You’ll need an IO Link controller (not included) to connect to your interface.

Variable Area Flow Measurement—Variable-area transmitters determine the flow rate by tracking where the liquid pushes the piston. They have two configurable outputs. One can be wired as an analog output or a digital switch. The other one can be wired as a digital switch, digital pulse output, or IO Link. Pulse outputs send flow data using spikes of voltage that match the input voltage of the transmitter. The higher the flow, the more pulses they send. These transmitters are calibrated with water, glycol solutions, and coolants but can be recalibrated in the field for other liquids.

Vortex Flow Measurement—Vortex transmitters determine the flow rate by measuring the size of the vortex created as liquid flows through them. They don’t have any moving parts that can break or get stuck. Use them only with liquids that are at least 95% water. They have one analog output for flow and another for temperature. The output for temperature can also be wired for IO Link.

	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Temp. Range, ° F	Seal Material	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Enclosure Rating		Each
One Digital Switch/Pulse Output and One 4-20 mA Analog Transmitter/Digital Switch Output—4-Pole Micro M12 Connection Plug







	316 Stainless Steel Body with 316 Stainless Steel Fitting

	Variable Area	3/4 NPT Female	5 to 240	5 9/16"	±5%	580 psi @ 70° F	14 to 212	Fluoroelastomer	18 to 30	Any Angle	Yes	IP65, IP67	0000000	0000000


	Variable Area	3/4 NPT Female	7 to 360	5 9/16"	±5%	580 psi @ 70° F	14 to 212	Fluoroelastomer	18 to 30	Any Angle	Yes	IP65, IP67	0000000	000000
	Variable Area	3/4 NPT Female	10 to 600	5 9/16"	±5%	580 psi @ 70° F	14 to 212	Fluoroelastomer	18 to 30	Any Angle	Yes	IP65, IP67	0000000	000000


	Two 4-20 mA Analog Transmitter Outputs—4-Pole Micro M12 Connection Plugs







					316 Stainless Steel Body with 316 Stainless Steel Fitting

					Vortex	3/4 NPT Female	80 to 1,585	5 15/32"	±2%	172 psi @ 70° F	14 to 190	Fluoroelastomer	18 to 30	Any Angle	No	IP65, IP67	0000000	000000

Flow Transmitters with Sight

Send flow rate data using these transmitters while also being able to visually confirm liquid is flowing. They measure flow by counting how many times the turbine turns as the liquid moves through it. To prevent clogging the turbine and other damage, use them only with clean, low-viscosity liquids. These transmitters, also known as transducers, convert the flow measurement to an electrical signal that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs), to monitor flow or control equipment. Mount them directly inline with your system. They measure accurately in any mounting orientation.

These transmitters are calibrated with water. You can use them with other liquids, but they may not measure accurately if the liquid’s viscosity differs from water.

Analog Transmitter Output—Transmitters with an analog output increase their output signal as flow increases. For your receiving device to interpret the signal, you will need to calibrate it for the measurement range and output signal of the transmitter. They only give accurate readings within the rated measurement range.

Digital Pulse Output—Transmitters with a digital pulse output send flow data using spikes of voltage that match the input voltage of the transmitter. The higher the flow, the more pulses they send.

	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Temp. Range, ° F	Seal Material	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Pulse Freq., Hz		Each
One 4-20 mA Analog Transmitter Output—Wire Lead Connection







	316 Stainless Steel Body with 316 Stainless Steel Fitting

	Turbine	3/4 NPT Female	1.5 to 15	5 1/4"	±2%	200 psi @ 70° F	20 to 212	Buna-N	12 to 24	Any Angle	No	—	00000000	000000000


	Turbine	3/4 NPT Female	5 to 50	5 1/4"	±2%	200 psi @ 70° F	20 to 212	Buna-N	12 to 24	Any Angle	No	—	00000000	00000000


	One 0-5V DC Analog Transmitter Output—Wire Lead Connection







					316 Stainless Steel Body with 316 Stainless Steel Fitting

					Turbine	3/4 NPT Female	1.5 to 15	5 1/4"	±2%	200 psi @ 70° F	20 to 212	Buna-N	12 to 24	Any Angle	No	—	00000000	00000000


					Turbine	3/4 NPT Female	5 to 50	5 1/4"	±2%	200 psi @ 70° F	20 to 212	Buna-N	12 to 24	Any Angle	No	—	00000000	00000000


					One Digital Pulse Output—Wire Lead Connection







									316 Stainless Steel Body with 316 Stainless Steel Fitting

									Turbine	3/4 NPT Female	5 to 30	3 15/16"	±15%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	0000000	000000

High-Pressure Flow Switches for Oil

Measure the flow rate of oil at pressures up to 3,600 psi to activate or deactivate equipment. Designed to compensate for viscosity and density changes, these switches have an adjustment screw to select your specific flow rate within the set point range. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). Their IP65 rating protects them from dust and low-pressure washdowns, such as from a garden hose. All are accurate in any mounting position.

These switches are calibrated with and measure oil accurately. They can also be used with other liquids by applying your liquid’s specific-gravity conversion factor to calculate the new set point.

	Max. Pressure @ Temp.	Max. Temp., ° F	Max. Switching Current @ Voltage	Port-to-Port Lg.	Enclosure Rating		Each
SPDT







	Brass Body with Brass Fittings

	3/4 NPT Female	1 to 11	Adjustable	3,600 psi @ 70° F	212	1 amp @ 100V AC 0.42 amp @ 240V AC 1 amp @ 60V DC 0.26 amp @ 230V DC	6 3/8"	IP65	0000000	0000000


	3/4 NPT Female	2 to 18	Adjustable	3,600 psi @ 70° F	212	1 amp @ 100V AC 0.42 amp @ 240V AC 1 amp @ 60V DC 0.26 amp @ 230V DC	6 3/8"	IP65	0000000	000000

Flow Transmitters

Variable Area

Flow Measurement

Turbine Flow

Measurement

Send flow rate measurements to monitor and control equipment. Also known as transducers, these transmitters convert flow rate measurements to an electrical signal that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs). As flow increases, the output signal increases. For your receiving device to interpret the signal, you will need to calibrate it for the measurement range and output signal of the transmitter. They only give accurate readings within the rated measurement range. Mount them directly inline with your system. They measure flow correctly no matter their mounting orientation.

These transmitters are calibrated with water. You can use them with other liquids, but they may not measure accurately if the liquid’s viscosity differs from water.

Variable Area Flow Measurement—Variable-area transmitters determine flow rate by tracking where the liquid pushes an internal piston.

Turbine Flow Measurement—Turbine transmitters measure flow by counting how many times their turbine turns as liquid passes through. To avoid clogging the turbine and other damage, use them only with clean, low-viscosity liquids. The digital output sends flow data with a pulse, which is a spike of voltage. The higher the flow, the more pulses they send. The voltage of the pulse output matches the input voltage sent to the transmitters. These transmitters meet NSF/ANSI 61 for use with drinking water.

	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Temp. Range, ° F	Seal Material	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Enclosure Rating	Pulse Freq., Hz		Each
One Analog Transmitter/Digital Pulse Output—Wire Lead Connection







	Nylon Body with Nylon Fitting

	Turbine	3/4 NPT Male	1.32 to 17.17	2 15/16"	±3%	362 psi @ 212° F	-4 to 212	—	5 to 24	Any Angle	No	—	17 to 227	00000000	0000000


	Two 4-20 mA Analog Transmitter Outputs—4-Pole Micro M12 Connection Plugs







					316L Stainless Steel/Aluminum/Brass/Plastic Body with 316 Stainless Steel/Brass Fitting

					Variable Area	3/4 NPT Female	0.1 to 4	2 15/16"	±5%	580 psi @ 212° F	14 to 212	Fluoroelastomer	18 to 30	Any Angle	No	IP65, IP67	—	00000000	000000


					Variable Area	3/4 NPT Female	0.1 to 6	2 15/16"	±5%	580 psi @ 212° F	14 to 212	Fluoroelastomer	18 to 30	Any Angle	No	IP65, IP67	—	00000000	000000
					Variable Area	3/4 NPT Female	0.2 to 10	2 15/16"	±5%	580 psi @ 212° F	14 to 212	Fluoroelastomer	18 to 30	Any Angle	No	IP65, IP67	—	00000000	000000

High-Pressure Flow Switches for Gas

Good for compressed-air systems and other compressed gases that reach up to 3,600 psi, these switches measure the flow rate to activate or deactivate equipment when they reach a set point. Tighten or loosen the adjustment screw to choose your flow rate anywhere within the set point range. As flowing gas pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They must be mounted horizontally to function correctly. IP rated, they seal out dust and can be lightly rinsed.

These switches are calibrated with and measure air accurately. They can also be used with other gases by applying your gases’ specific-gravity conversion factor to calculate the new set point.

	Max. Pressure @ Temp.	Max. Temp., ° F	Max. Switching Current @ Voltage	Port-to-Port Lg.	Enclosure Rating		Each
SPDT







	Nickel-Plated Brass Body with 304 Stainless Steel Fittings

	3/4 NPT Female	10 to 90	Adjustable	3,600 psi @ 70° F	212	0.8 amp @ 240V AC	5 7/8"	IP65	0000000	0000000


	3/4 NPT Female	30 to 130	Adjustable	3,600 psi @ 70° F	212	0.8 amp @ 240V AC	5 7/8"	IP65	0000000	000000

High-Pressure Flow Switches

Rated for pressures up to 3,600 psi, these switches measure the flow rate of liquids to activate or deactivate equipment when your flow rate reaches a set point. Tighten or loosen the adjustment screw on these switches to choose your flow rate anywhere within set point the range. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They must be mounted horizontally to function correctly. IP rated, they seal out dust and can be lightly rinsed.

	Max. Pressure @ Temp.	Max. Temp., ° F	Max. Switching Current @ Voltage	Port-to-Port Lg.	Enclosure Rating		Each
SPDT







	Nickel-Plated Brass Body with 304 Stainless Steel Fittings

	3/4 NPT Female	8 to 34	Adjustable	3,600 psi @ 70° F	212	1.5 amp @ 240V AC	5 7/8"	IP65	0000000	0000000

High-Accuracy Flow and Temperature Transmitters

Also known as magmeters, these transmitters use a magnetic field to measure flow rate and temperature with high accuracy. Because they use a magnetic field, they only work with conductive liquids, such as water. These transmitters, also known as transducers, convert measurements to an electrical signal that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs) to monitor flow or control equipment. For your receiving device to interpret the signal, you will need to calibrate it for the measurement range and output signal of the transmitter. As flow or temperature increases, the output signal increases. These transmitters have one analog output for flow and another for temperature. They only give accurate readings within the rated measurement range. A digital display makes it easy to view readings and adjust settings at the source. Mount these transmitters inline with your pipe system. They measure flow correctly in any mounting orientation.

These transmitters are calibrated with water. They can only be used with liquids with a conductivity of at least 20 µS/cm.

			Flow Range
	Flow Measurement Type	Pipe Connections	Gallons per Minute, gpm	Liters per Minute, L/min	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Temp. Range, ° F	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Enclosure Rating		Each
Two 4-20 mA Analog Transmitter Outputs—4-Pole Micro M12 Connection Plugs







				316 Stainless Steel/Plastic/Polybutylene Body with 316 Stainless Steel Fitting

				Magnetic Induction	3/4 NPT Female	0.02 to 13.22	0.2 to 50	2 1/8"	±2%	225 psi @ 70° F	0 to 175	20 to 30	Any Angle	No	IP67	00000000	0000000