NSF/ANSI 61 Flowmeters | McMaster-Carr

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30 Products

Flow Transmitters

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.

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	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Pulse Freq., Hz		Each
One Analog Transmitter/Digital Pulse Output—Wire Lead Connection







	Nylon Body with Nylon Fitting

	Turbine	1/4 NPT Male	0.026 to 0.65	1 3/4"	±3%	362 psi @ 212° F	-4 to 212	5 to 24	Any Angle	No	36 to 902	4386N201	0000000


	Turbine	3/8 NPT Male	0.13 to 1.3	2 5/32"	±3%	362 psi @ 212° F	-4 to 212	5 to 24	Any Angle	No	56 to 565	4386N202	000000
	Turbine	3/8 NPT Male	0.26 to 4	2 5/32"	±3%	362 psi @ 212° F	-4 to 212	5 to 24	Any Angle	No	36 to 553	4386N203	000000
	Turbine	3/8 NPT Male	0.53 to 9.2	2 5/32"	±3%	362 psi @ 212° F	-4 to 212	5 to 24	Any Angle	No	25 to 435	4386N204	000000
	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	4386N205	000000




			Brass Body with Brass Fitting

			Turbine	3/8 NPT Male	0.5 to 2.11	2 5/32"	±3%	362 psi @ 212° F	-4 to 212	5 to 24	Any Angle	No	132 to 559	4386N206	000000


			Turbine	3/8 NPT Male	0.8 to 6.6	2 5/32"	±3%	362 psi @ 212° F	-4 to 212	5 to 24	Any Angle	No	46 to 383	4386N207	000000

Flanged Totalizers for Drinking Water


Bronze Body Elliptical Flange	Bronze Body Round Flange	Bronze Body Analog Display

Flanged ends let you securely integrate these totalizers into large drinking water pipelines to measure the cumulative amount of water flowing through them. They meet NSF/ANSI 61, so they're safe to use with drinking water. They measure flow volume by counting how many times their turbine turns as liquid flows through. To avoid clogging the turbine and other damage to the sensor, use them only with clean, low-viscosity liquids. Their total cannot be reset.

These totalizers 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.

Flanges—The elliptical flange kit (sold separately) lets you convert elliptical flanges to NPT female connections.

	Totalizers																		Flanges
		Flange							Temp., ° F					Bolt
	Connections	OD	Type	Flow, gpm	Maximum Total Volume Displayed	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position	Display Type	Hole Dia.	Circle Dia.	No. of Holes		Each		Each
Bronze Body with Brass Fittings



		2 Pipe Size	5 7/8"	Elliptical	4 to 350	99,999,000 Gallons	10"	±1.5%	175 psi @ 70° F	33	150	Buna-N	Horizontal	Analog	5/8"	4"	2	4189K31	000000000	4189K41	0000000


		3 Pipe Size	7 1/2"	Round	5 to 530	99,999,000 Gallons	12"	±1.5%	175 psi @ 70° F	33	150	Buna-N	Horizontal	Analog	3/4"	6"	4	4189K32	00000000	———	0
		4 Pipe Size	8 7/8"	Round	9 to 1,350	99,999,000 Gallons	14"	±1.5%	175 psi @ 70° F	33	150	Buna-N	Horizontal	Analog	3/4"	7 1/2"	8	4189K33	00000000	———	0
		6 Pipe Size	11 1/8"	Round	25 to 2,700	99,999,000 Gallons	18"	±1.5%	175 psi @ 70° F	33	150	Buna-N	Horizontal	Analog	7/8"	9 1/2"	8	4189K34	00000000	———	0

Totalizers for Drinking Water

Brass Body

Female

Brass Body

Male

Brass Body

Analog Display

Meeting NSF/ANSI 61, these totalizers measure the cumulative amount of drinking water flowing through them. They use positive displacement, so they measure the flow by passing specific volumes of liquid through their chamber. Their total cannot be reset. Install them directly inline with your pipe system using the fittings on each end. They have a low-flow indicator to detect leaks in your system.

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

								Temp., ° F
	Connections	Flow, gpm	Maximum Total Volume Displayed	Inlet ID	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position	Display Type	Features		Each
Brass Body with Bronze Fittings



		1/2 NPT Male	0.5 to 20	10,000,000 Gallons	5/8"	12 1/2"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K21	0000000


		3/4 NPT Male	0.5 to 20	10,000,000 Gallons	5/8"	12 3/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K22	000000
		3/4 NPT Male	0.75 to 30	10,000,000 Gallons	3/4"	14 1/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K61	000000
		1 NPT Male	0.75 to 30	10,000,000 Gallons	3/4"	14 1/2"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K62	000000
		1 NPT Male	1 to 50	10,000,000 Gallons	1"	16 1/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K23	000000
		1 1/2 NPT Female	2 to 100	100,000,000 Gallons	1 1/2"	12 5/8"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K25	00000000
		2 NPT Female	2.5 to 160	100,000,000 Gallons	2"	15 1/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator	4041K26	00000000

Fixed-Set-Point Flow Switches for Drinking Water

Factory set to activate equipment when your drinking water system reaches a fixed level, these flow switches are easier to install than adjustable flow switches. They meet NSF/ANSI 61, so they're safe to use with drinking water. They actuate when your system’s flowing water pushes their paddle into a set position. These switches are single pole, single throw (SPST) and turn one device from off to on. IP rated, they seal out dust and can be lightly rinsed. They're accurate in any mounting position.

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.

	Set Point, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage	Max. Switching Current @ Voltage	End-to-End Lg.	Enclosure Rating	Certification	Food Industry Std.		Each
Noryl Body with Threaded Brass Fittings



	1/2 NPT Female	0.6	145 psi @ 70° F	-4 to 212	230V AC/48V DC	1 amp @ 230V AC 1 amp @ 48V DC	2"	IP65	CE Marked	NSF/ANSI 61	4646N11	0000000

Remote-Reading Totalizers for Drinking Water


Brass Body Female	Brass Body Male


Analog Display	Replacement Remote Displays

Often used in hard-to-access areas, these totalizers let you monitor the total amount of drinking water flowing through them up to 250 feet away. They meet NSF/ANSI 61 for safe use with drinking water. They use positive displacement, so they measure flow by passing specific volumes of liquid through a chamber. Their total cannot be reset. Mount them inline with your pipe system. They have a low-flow indicator to detect leaks in your system.

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

	Totalizers															Replacement Remote Displays
								Temp., ° F
	Connections	Flow, gpm	Maximum Total Volume Displayed	Inlet ID	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position	Display Type	Features		Each		Each
Brass Body with Bronze Fittings



		1/2 NPT Male	0.5 to 20	99,999,999 Gallons	5/8"	12 1/2"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K91	0000000	3786K11	0000000


		3/4 NPT Male	0.5 to 20	99,999,999 Gallons	5/8"	12 3/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K92	000000	3786K11	000000
		3/4 NPT Male	0.75 to 30	99,999,999 Gallons	3/4"	14 1/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K81	000000	3786K11	000000
		1 NPT Male	0.75 to 30	99,999,999 Gallons	3/4"	14 1/2"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K82	000000	3786K11	000000
		1 NPT Male	1 to 50	99,999,999 Gallons	1"	16 1/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K93	000000	3786K11	000000
		1 1/2 NPT Female	2 to 100	99,999,999 Gallons	1 1/2"	12 5/8"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K95	00000000	3786K12	000000
		2 NPT Female	2.5 to 160	99,999,999 Gallons	2"	15 1/4"	±1.5%	150 psi @ 70° F	33	80	EPM Rubber	Horizontal	Analog	Low-Flow Indicator, Remote Display (Battery Included)	3786K96	00000000	3786K12	000000

Thermostat Cable

	OD	Lg., ft.		Each
Solid Wire







	150V AC/150V DC

	20	2	20/2	0.11"	250	8278T115	000000