About Flowmeters and Totalizers
Flowmeters measure the rate of flow for a liquid or a gas. Totalizers measure the cumulative flow volume. Flowmeter/totalizers display both the flow rate and the cumulative flow volume.
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Insertion Flow Switches
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Connection
with IP65 Rating
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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.
Switches with a Noryl plastic body have a paddle that you trim to adjust the set point. The more you trim, the higher the set point.
Switches with a brass or 316 stainless steel body have multiple paddles you can choose between to get you closest to your set point. For a higher set point, loosen the locking washers to remove the largest paddles. You can also trim the paddles to fine-tune your set point. The more you trim, the higher the set point.
Choose a fitting material that is compatible with the liquid you're running through your line. Noryl plastic fittings work with a wide range of chemicals. Brass and 316 stainless steel fittings resist impact better than Noryl plastic fittings.
Socket-connect flow switches bond to an unthreaded PVC pipe tee or pipe outlet with PVC cement and primer (not included).
IP65 rated switches seal out dust and can be lightly rinsed. NEMA 4X rated switches protect against dust, weather, and washdowns.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Thread Type | Gender | For Pipe Size | Set Point Range, gpm | Max. Flow Rate, gpm | Set Point Adjustment Method | Paddle Material | Max. Pressure | Temp. Range, °F | Max. Switching Current @ Voltage | Body Ht. | Environmental Rating | Specifications Met | Each | |
Noryl Plastic Body with Noryl Plastic Fittings | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Socket Connection | |||||||||||||||
3/4 | __ | __ | 1 1/2 2 3 | 7.7 to 19.3 10.3 to 21 16.5 to 52 | 110 150 390 | Trimmable Paddles | Noryl Plastic | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 0000000 | 0000000 |
3/4 | __ | __ | 1 1/2 2 3 | 7.9 to 15 10 to 22 18 to 50 | 144 240 650 | Trimmable Paddles | 301 Stainless Steel | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 00000000 | 000000 |
Noryl Plastic Body with Brass Fittings | |||||||||||||||
Threaded Connection | |||||||||||||||
1/2 | NPT | Male | 1 1/2 2 3 4 8 | 7.7 to 19.3 10.3 to 21 16.5 to 52 25.5 to 68 126 to 240 | 110 150 390 420 1100 | Trimmable Paddles | Noryl Plastic | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 0000000 | 000000 |
1/2 | NPT | Male | 1 1/2 2 3 4 8 | 7.9 to 15 10 to 22 18 to 50 25 to 66 114 to 176 | 144 240 650 800 1900 | Trimmable Paddles | 301 Stainless Steel | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 00000000 | 000000 |
Brass Body with Brass Fittings | |||||||||||||||
Threaded Connection | |||||||||||||||
1 | NPT | Male | 1 2 4 6 | 4.9 to 17.6 13.7 to 56.4 35.3 to 118 60.3 to 245 | 27 105 397 900 | Removable Layered Paddles, Trimmable Paddles | 304 Stainless Steel | 160 psi @ 70° F | 33° to 225° | 3.7 A @ 240 V AC 7.4 A @ 120 V AC | 5" | NEMA 4X | C-UL Listed, UL Recognized Component | 000000 | 000000 |
1 | NPT | Male | 1 2 4 6 | 6 to 10.2 18.8 to 32.8 39.7 to 73.5 79.2 to 166 | 27 105 397 900 | Removable Layered Paddles, Trimmable Paddles | 304 Stainless Steel | 160 psi @ 70° F | 33° to 300° | 3.7 A @ 240 V AC 7.4 A @ 120 V AC | 5" | __ | C-UL Listed, UL Listed | 000000 | 000000 |
316 Stainless Steel Body with 316 Stainless Steel Fittings | |||||||||||||||
Threaded Connection | |||||||||||||||
1 | NPT | Male | 1 2 4 6 | 6 to 10.2 18.8 to 32.8 39.7 to 73.5 79.2 to 166 | 27 105 397 900 | Removable Layered Paddles, Trimmable Paddles | 304 Stainless Steel | 160 psi @ 70° F | 33° to 300° | 3.7 A @ 240 V AC 7.4 A @ 120 V AC | 5" | __ | C-UL Listed, UL Listed | 000000 | 000000 |
Fixed-Setpoint Insertion Flow Switches
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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 technical drawings and 3-D models, click on a part number.
Pipe Size | For Pipe Size | Set Point, gpm | Max. Flow Rate, gpm | Max. Pressure | Temp. Range, °F | Max. Switching Current @ Voltage | Body Ht. | Environmental Rating | Specifications Met | Each | |
Noryl Plastic Body | |||||||||||
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Socket Connection | |||||||||||
1/2 | 1/2 | 1.03 | 7.9 | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC, 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 00000000 | 0000000 |
3/4 | 3/4 | 1.94 | 21 | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC, 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 00000000 | 000000 |
3/4 | 1, 1 1/4 | 2.7, 6.8 | 31, 40 | 160 psi @ 70° F | -13° to 212° | 1 A @ 230 V AC, 1 A @ 48 V DC | 2 1/2" | IP65 | UL 508 | 00000000 | 000000 |
Hazardous Location Insertion Flow Switches
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Safely activate and deactivate equipment in environments with flammable gases and combustible dust when your flow rate reaches a set point. They are UL listed and CSA certified for use in hazardous locations. These switches save you from disassembling your pipeline because you insert them into pipe tees or pipe outlets instead of mounting them inline. They actuate when your system’s liquid pushes the paddle into a set position. To change your set point, the paddle has multiple layers that you can remove. For the lowest set point, use the largest paddle that will fit your pipe. To increase your set point, loosen the locking washers and remove paddles. You can trim the paddles to fine-tune your set point. The smaller the paddle, the higher the setpoint.
They should be mounted vertically into a horizontal pipeline, so liquid pushes the paddle.
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.
SPDT (singe pole, double throw) switches can turn one device from off to on (normally open) or from on to off (normally closed).
DPDT (double pole, double throw) switches can either turn two devices from off to on (normally open) or on to off (normally closed).
For technical drawings and 3-D models, click on a part number.
Set Point Range | Max. Flow Rate | Conduit | ||||||||||||||
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Pipe Size | Thread Type | Gender | For Pipe Size | For Water and Oil, gpm | For Air and Inert Gas, scfm | For Water and Oil, gpm | For Air and Inert Gas | Max. Pressure | Temp. Range, °F | Max. Switching Current @ Voltage | Trade Size | Thread Type | Gender | Body Ht. | Each | |
SPDT | ||||||||||||||||
Brass Body | ||||||||||||||||
1 1/2 | NPT | Male | 1 1/2 2 4 12 20 | 3 to 7 4 to 15 12 to 95 140 to 900 400 to 2,400 | 17 to 32 13 to 65 50 to 400 800 to 3,450 2,850 to 10,000 | 55 97 391 3,525 9,792 | Not Rated | 1000 psi @ 70° F | -4° to 275° | 5 A @ 125 V AC 5 A @ 250 V AC | 3/4 | NPT | Female | 8" | 00000000 | 0000000 |
316 Stainless Steel Body | ||||||||||||||||
1 1/2 | NPT | Male | 1 1/2 2 4 12 20 | 3 to 7 4 to 15 12 to 95 140 to 900 400 to 2,400 | 17 to 32 13 to 65 50 to 400 800 to 3,450 2,850 to 10,000 | 55 97 391 3,525 9,792 | Not Rated | 2000 psi @ 70° F | -4° to 275° | 5 A @ 125 V AC 5 A @ 250 V AC | 3/4 | NPT | Female | 8" | 00000000 | 00000000 |
DPDT | ||||||||||||||||
Brass Body | ||||||||||||||||
1 1/2 | NPT | Male | 1 1/2 2 4 12 20 | 3 to 7 4 to 15 12 to 95 140 to 900 400 to 2,400 | 17 to 32 13 to 65 50 to 400 800 to 3,450 2,850 to 10,000 | 55 97 391 3,525 9,792 | Not Rated | 1000 psi @ 70° F | -4° to 275° | 5 A @ 125 V AC 5 A @ 250 V AC | 3/4 | NPT | Female | 8" | 00000000 | 000000 |
316 Stainless Steel Body | ||||||||||||||||
1 1/2 | NPT | Male | 1 1/2 2 4 12 20 | 3 to 7 4 to 15 12 to 95 140 to 900 400 to 2,400 | 17 to 32 13 to 65 50 to 400 800 to 3,450 2,850 to 10,000 | 55 97 391 3,525 9,792 | Not Rated | 2000 psi @ 70° F | -4° to 275° | 5 A @ 125 V AC 5 A @ 250 V AC | 3/4 | NPT | Female | 8" | 00000000 | 00000000 |
Electronic Insertion 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 orientation.
IP65 rated switches protect against dust and washdowns. IP67 rated switches withstand temporary submersion.
For technical drawings and 3-D models, click on a part number.
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Set Point Range | |||||||||||
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For Pipe Size | For Liquids, gpm | For Gases, scfm | Max. Pressure | Temp. Range, °F | Max. Switching Current @ Voltage | Body Ht. | Probe Lg. | Environmental Rating | Specifications Met | Each | |
304 Stainless Steel Body | |||||||||||
One 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 | 4300 psi @ 70° F | -10° to 175° | 250 mA @ 19 V DC 250 mA @ 36 V DC | 2 11/16" | 1 13/16" | IP65, IP67 | C-UL Listed, CE Marked, UL Listed | 0000000 | 0000000 |
One 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 | 4300 psi @ 70° F | -10° to 175° | 250 mA @ 18 V DC 250 mA @ 36 V DC | 2 11/16" | 1 13/16" | IP65, IP67 | C-UL Listed, CE Marked, UL Listed | 0000000 | 000000 |
Two Digital NPN Signal Outputs | |||||||||||
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 | 4300 psi @ 70° F | -10° to 175° | 250 mA @ 19 V DC 250 mA @ 36 V DC | 2 11/16" | 1 13/16" | IP65, IP67 | C-UL Listed, CE Marked, UL Listed | 0000000 | 000000 |
Two Digital PNP Signal Outputs | |||||||||||
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 | 4300 psi @ 70° F | -10° to 175° | 250 mA @ 18 V DC 250 mA @ 36 V DC | 2 11/16" | 1 13/16" | IP65, IP67 | C-UL Listed, CE Marked, UL Listed | 0000000 | 000000 |
Sanitary Electronic Insertion Flow Switches
Easy to clean and install, these flow switches are 3-A certified to meet sanitary design standards and insert into your line with a quick-clamp mounting adapter (sold separately). They have a smooth probe, and unlike flow switches that measure with a paddle or turbine, these don’t have moving parts for contaminants to get stuck in. Rated IP67 and IP69K, they withstand temporary submersion and high-temperature, high-pressure washdowns. The mounting adapter attaches to a quick-clamp tube tee or outlet (often called tri-clamp fittings) in your large-diameter tubing system using a gasket and clamp (not included), so you don't need to disassemble your line for inline installation. This mounting adapter is also easy to remove and clean.
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. They’re accurate in any mounting orientation.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/454/4548n11-f@halfx_1705944865.png?ver=imagenotfound)
Set Point Range | ||||||||||
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For Tube OD | For Liquids, gpm | For Gases, scfm | Max. Pressure | Temp. Range, °F | Max. Switching Current @ Voltage | Body Ht. | Environmental Rating | Specifications Met | Each | |
13/16" Probe Lg. | ||||||||||
316 Stainless Steel Body | ||||||||||
One Digital PNP Signal Output | ||||||||||
1 1/2" 2" | 0.55 to 54.21 0.97 to 96.37 | 4.84 to 72.47 8.59 to 128.84 | 430 psi @ 70° F | -10° to 200° | 250 mA @ 19 V DC, 250 mA @ 36 V DC | 3 5/16" | IP67, IP69K | 3-A Certified 74-07, C-UL Listed, CE Marked, FDA Compliant 21 CFR 177.2415, UL Listed | 0000000 | 0000000 |
1 13/16" Probe Lg. | ||||||||||
316 Stainless Steel Body | ||||||||||
One Digital PNP Signal Output | ||||||||||
1 1/2" 2" | 0.55 to 54.21 0.97 to 96.37 | 4.84 to 72.47 8.59 to 128.84 | 430 psi @ 70° F | -10° to 200° | 250 mA @ 19 V DC, 250 mA @ 36 V DC | 3 5/16" | IP67, IP69K | 3-A Certified 74-07, C-UL Listed, CE Marked, FDA Compliant 21 CFR 177.2415, UL Listed | 0000000 | 000000 |
Insertion Flow and Temperature Transmitters
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Thread a ring fitting (sold separately) into your pipe connection and insert the probe of these transmitters to measure the flow and temperature of water, oil, or air. The probe is held in place with a compression fitting on the other end of the ring fitting. They’re often used in large-diameter pipes where it would be difficult to install a transmitter inline. To calculate the flow rate, these transmitters generate a small amount of heat, then measure the cooling effect your liquid or air has on it. They measure and output both flow and temperature, making them ideal for applications where temperature fluctuates. Also known as transducers, they 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. 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. They’ll measure flow correctly in any mounting orientation. These transmitters are calibrated with air, glycol solutions, oil, and water but can be recalibrated in the field for other liquids.
Adjust settings at the source using the digital display. These transmitters have two configurable outputs. One can be wired for flow or temperature as an analog output or a digital switch. The other one can be wired for flow 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. To change settings and receive error messages remotely from your PLC or computer, you can program one of the outputs to use IO Link. You’ll need an IO Link controller (not included) to connect to your interface.
For technical drawings and 3-D models, click on a part number.
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Flow Range, gpm | Probe Lg. | End-to-End Lg. | Accuracy | Max. Pressure | Temp. Range, °F | Input Voltage Range | Plug Type | Mounting Orientation | Field Recalibratable | Environmental Rating | Each | |
One Digital Switch/Pulse Output and One 4-20mA Analog Transmitter/Digital Switch/Pulse Output | ||||||||||||
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316 Stainless Steel/PBT Plastic Body with 316 Stainless Steel Fittings | ||||||||||||
0.02 to 12 | 3 15/16" | 7 9/16" | ±10% | 725 psi @ 212° F | 0° to 212° | 18 to 30V DC | 4-Pole Micro M12 | Any | Yes | IP65, IP67 | 00000000 | 0000000 |
0.02 to 12 | 7 7/8" | 11 1/2" | ±10% | 725 psi @ 212° F | 0° to 212° | 18 to 30V DC | 4-Pole Micro M12 | Any | Yes | IP65, IP67 | 00000000 | 000000 |