Ultrasonic Level Sensors

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23 Products

Choosing a Proximity Switch

Ultrasonic Transmitters

Measure the distance to objects and the level of liquids and materials despite size, shape, or surface finish, and send that information to other parts of your system. Unlike photoelectric switches, which use light to detect objects, these transmitters emit high-frequency sound waves that target small spots, so the surface and structure of your object won’t affect results. This makes them great for materials with uneven surfaces, such as granules and powder. They also sense objects in dirty and wet places, but they don’t work well where there’s wind, since it could disrupt their sound waves. Use their plug to quickly connect and disconnect to cables with a socket (sold separately). UL listed, C-UL listed, and CE marked, they meet American, Canadian, and European safety standards.

All transmitters have an analog output, which means they continuously send measurements to monitor status and manage components in your system. Some also have a digital output that signals your controller to turn components on or off whenever an object is detected or a set level is reached. Those with IO Link connect to a programmable logic controller (PLC), so you can remotely change settings and receive error messages. You need an IO-Link controller (not included) to connect.

90° elbow transmitters are compact to fit in tight spaces. They’re best for conveyors.

Rated IP67, all of these transmitters seal out dust and water if briefly submersed. NEMA 6 rated transmitters also stand up to weather and washdowns.

For technical drawings and 3-D models, click on a part number.

Straight Transmitters

Straight

4-Pole
Micro
M12 Plug

Transmitters														Cables with Socket
Number of Outputs	Signal Output Type	Signal Output	Sensing Distance, mm	Input Voltage	Communication Protocol	Dia., mm	Lg., mm	Housing Material	Circuit Protection	Temp. Range, °F	Environmental Rating		Each		Each
With 4-Pole Micro M12 Plug
Analog
1	__	4mA-20mA	40-300	10V DC-30V DC	__	18	61	Stainless Steel	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	0000000	0000000	000000
1	__	4mA-20mA	80-1,200	10V DC-30V DC	__	18	61	Stainless Steel	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
Digital/Analog
2	PNP	4mA-20mA	150-1,600	10V DC-30V DC	IO Link	18	98	Stainless Steel	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
2	PNP	4mA-20mA	250-3,500	10V DC-30V DC	IO Link	30	103	Stainless Steel	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000

90° Elbow Transmitters

90° Elbow

4-Pole
Micro
M12 Plug

Transmitters															Cables with Socket
Number of Outputs	Signal Output Type	Signal Output	Sensing Distance, mm	Input Voltage	Dia., mm	Lg., mm	Wd., mm	Ht., mm	Housing Material	Circuit Protection	Temp. Range, °F	Environmental Rating		Each		Each
With 4-Pole Micro M12 Plug
Analog
1	__	4mA-20mA	100-1,000	10V DC-30V DC	30	45	40	52	Plastic	Overload, Reverse Polarity, Short Circuit	-40° to 155°	IP67, NEMA 6	0000000	0000000	0000000	000000
1	__	4mA-20mA	200-2,000	10V DC-30V DC	30	45	40	52	Plastic	Overload, Reverse Polarity, Short Circuit	-40° to 155°	IP67, NEMA 6	0000000	000000	0000000	00000
1	__	0V DC-10V DC	100-1,000	10V DC-30V DC	30	45	40	52	Plastic	Overload, Reverse Polarity, Short Circuit	-40° to 155°	IP67, NEMA 6	0000000	000000	0000000	00000
1	__	0V DC-10V DC	300-3,000	10V DC-30V DC	30	45	40	52	Plastic	Overload, Reverse Polarity, Short Circuit	-40° to 155°	IP67, NEMA 6	0000000	000000	0000000	00000
Digital/Analog
2	PNP	4mA-20mA	40-300	10V DC-30V DC	18	38	20	53	Plastic	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
2	PNP	4mA-20mA	80-1,200	10V DC-30V DC	18	38	20	53	Plastic	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
2	PNP	0V DC-10V DC	40-300	10V DC-30V DC	18	38	20	53	Plastic	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
2	PNP	0V DC-10V DC	80-1,200	10V DC-30V DC	18	38	20	53	Plastic	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000

Ultrasonic Noncontact Level Switches for Chemicals

Use high-frequency sound waves to detect chemical level. This switch has three relays that can be programmed for multiple set points. Use it to activate several alarms or to automate tank filling and emptying. It’s rated NEMA 4X for protection from corrosion and washdowns.

For technical drawings and 3-D models, click on a part number.

Pipe													Conduit
Size	Thread Type	Gender	Sensing Distance, ft.	Max. Pressure	Temp. Range, °F	Switch Starting Position	Industry Designation	Current	Lg.	Wd.	Electrical Connection	Environmental Rating	Trade Size	Thread Type	Gender		Each
95V AC/250V AC Input Voltage
Polycarbonate Plastic Body
1	NPT	Male	0.33-9.8	30 psi @ 70° F	-5° to 140°	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	0.17 A @ 120 V AC	3 15/16"	5 3/16"	Screw Terminals	IP65, NEMA 4X	1/2	NPT	Female	0000000	0000000

Ultrasonic Switches

Detect objects and liquid or material levels to set off actions in your system—regardless of size, shape, or surface finish. These switches send out high-frequency sound waves that target small areas, so the surface and structure of your object won't affect results like photoelectric sensors, which sense using light. This makes them great for materials with uneven surfaces, such as granules and powder. They also sense objects when obscured by smoke, dust, debris, or water, but they don't work as well where there's wind, since it could disrupt their sound waves. Once an object is detected or a set level is reached, the digital output sends a signal to your controller to turn components in your system on or off. Use their plug to quickly connect and disconnect to cables with a socket (sold separately). UL listed, C-UL listed, and CE marked, all meet American, Canadian, and European safety standards.

Switches with two outputs let you set a minimum level on one output and a maximum on the other—for example, you can keep liquid levels constant by turning on a pump when the level drops too low and turning off the pump when it reaches the maximum.

Switches with IO Link connect to a programmable logic controller (PLC), so you can change settings and receive error messages remotely. You need an IO-Link controller (not included) to connect.

Switches with PNP/NPN signal output automatically produce the signal you need based on the connected device.

90° elbow switches are compact to fit in tight spaces. They’re best for conveyors.

Rated IP67, all of these switches seal out dust and water if briefly submersed. NEMA 6 rated switches also stand up to weather and washdowns.

For technical drawings and 3-D models, click on a part number.

Straight Switches

Straight

4-Pole
Micro
M12 Plug

Switches												Cables with Socket
Number of Outputs	Signal Output Type	Sensing Distance, mm	Input Voltage	Communication Protocol	Dia., mm	Lg., mm	Circuit Protection	Temp. Range, °F	Environmental Rating		Each		Each
Stainless Steel Housing
With 4-Pole Micro M12 Plug
1	PNP	40-300	10V DC-30V DC	IO Link	18	61	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	0000000	0000000	000000
2	PNP	150-1,600	10V DC-30V DC	IO Link	18	98	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
2	PNP	250-3,500	10V DC-30V DC	IO Link	30	103	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000

90° Elbow Switches

90° Elbow

4-Pole
Micro
M12 Plug

Switches														Cables with Socket
Number of Outputs	Signal Output Type	Sensing Distance, mm	Input Voltage	Communication Protocol	Dia., mm	Lg., mm	Wd., mm	Ht., mm	Circuit Protection	Temp. Range, °F	Environmental Rating		Each		Each
Plastic Housing
With 4-Pole Micro M12 Plug
1	PNP	40-300	10V DC-30V DC	IO Link	18	38	20	53	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	0000000	0000000	000000
1	PNP	80-1,200	10V DC-30V DC	IO Link	18	38	20	53	Overload, Reverse Polarity, Short Circuit	0° to 155°	IP67	0000000	000000	0000000	00000
1	PNP/NPN	100-1,000	10V DC-30V DC	__	30	45	40	52	Overload, Reverse Polarity, Short Circuit	-40° to 155°	NEMA 6, IP67	0000000	000000	0000000	00000
1	PNP/NPN	200-2,000	10V DC-30V DC	__	30	45	40	52	Overload, Reverse Polarity, Short Circuit	-40° to 155°	NEMA 6, IP67	0000000	000000	0000000	00000
1	PNP/NPN	300-3,000	10V DC-30V DC	__	30	45	40	52	Overload, Reverse Polarity, Short Circuit	-40° to 155°	NEMA 6, IP67	0000000	000000	0000000	00000

Distance-Measuring Modules for Development Boards

Stream distance readings to your development board in real time. Set up these modules near your robotics, production lines, or liquid monitoring systems to capture changing positioning.

Ultrasonic modules use sound pulses to measure distance. They can be used in low lighting. However, they may not be accurate on soft, small, or oddly shaped objects that won’t reflect sound waves properly.

Ultrasonic Modules

Sensing Distance	Accuracy	Output Data Frequency, Hz	Input Voltage	Lg.	Wd.	Ht.		Each
2 cm-4 m	±0.3 cm	40	5V DC	1 3/4"	3/4"	1/2"	0000000	00000