Noncontact Liquid-Level Transmitters
Use these transmitters to measure the levels of corrosive, dirty, or sticky liquids without coming into contact with them. They’ll continuously send measurements, so you can monitor status and manage components in your system. Mount at the top of your tank. There should be no tank walls, agitators, or other objects in the path of the transmitter.
Ultrasonic transmitters use high-frequency sound waves and are often used to measure water, wastewater, chemicals, and oil but won’t work on vapors, foam, and other media that’s difficult to measure. The included fob allows you to connect your transmitter to your computer, where you'll download software that guides you through the setup process to make sure you get accurate readings. Ultrasonic transmitters with a button interface can be set up and calibrated without the fob. Transmitters with a switch can also signal your controller to turn components on or off when they reach a set level.
Radar transmitters use high-frequency electromagnetic waves and are best for liquids that are tricky to measure because they work even if there’s condensation, foam, or other difficult conditions. They also measure the level of liquids with solids and small solids. In addition to the traditional 4-20 mA output, these transmitters can also send measurements to your Android smartphone or tablet using Bluetooth. There’s an app you can use to set up your transmitter and calibrate it for your system.
NEMA 6P rated transmitters protect against dust, weather, washdowns, corrosion, and submersion. IP68 rated transmitters seal out dust and water from temporary submersion.
For technical drawings and 3-D models, click on a part number.
Overall | Temp. Range, °F | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | For Liquid Level | Max. Pressure | Dia. | Lg. | Min. | Max. | Cable Lg., ft. | Input Voltage | Electrical Connection Type | Environmental Rating | Includes | Features | Each | |
NPT Male Pipe Connection | ||||||||||||||
0-5V DC/0-10V DC Output Signal | ||||||||||||||
| 1 | 0ft.-4ft. | 30 psi @ 70° F | 2" | 3 1/4" | -30° | 140° | 4 | 12-24V DC | Wire Leads | NEMA 6P | USB Configuration Fob | __ | 0000000 | 0000000 |
4-20mA Output Signal | ||||||||||||||
| 2 | 0ft.-19 1/2ft. | 30 psi @ 70° F | 4 3/8" | 7" | -30° | 140° | __ | 14-28V DC | Quick-Disconnect Terminals | IP68, NEMA 6P | USB Configuration Fob | Button Interface | 0000000 | 000000 |
| 3 | 0ft.-39ft. | 30 psi @ 70° F | 4 5/8" | 7" | -30° | 140° | __ | 14-28V DC | Quick-Disconnect Terminals | IP68, NEMA 6P | USB Configuration Fob | Button Interface | 0000000 | 00000000 |
4-20mA Output Signal with Switch | ||||||||||||||
| 1 | 0ft.-4ft. | 30 psi @ 70° F | 2" | 3 1/4" | -30° | 140° | 4 | 24V DC | Wire Leads | NEMA 6P | USB Configuration Fob | __ | 0000000 | 000000 |
| 1 | 0ft.-9 3/4ft. | 30 psi @ 70° F | 3" | 4 3/4" | -30° | 140° | 4 | 24V DC | Wire Leads | NEMA 6P | USB Configuration Fob | __ | 0000000 | 000000 |
| 2 | 1 1/2"-4 3/4ft. | 30 psi @ 70° F | 2 3/4" | 4" | -30° | 140° | 4 | 14-28V DC | Wire Leads | IP68, NEMA 6P | USB Configuration Fob | __ | 0000000 | 000000 |
| 2 | 4"-9 3/4ft. | 30 psi @ 70° F | 2 3/4" | 4" | -30° | 140° | 4 | 14-28V DC | Wire Leads | IP68, NEMA 6P | USB Configuration Fob | __ | 0000000 | 000000 |
Overall | Temp. Range, °F | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | For Liquid Level, ft. | Max. Pressure | Dia. | Lg. | Min. | Max. | Cable Lg., ft. | Input Voltage | Electrical Connection Type | Environmental Rating | Data Connection Type | Communication Protocol | Each | |
NPT Male Pipe Connection | ||||||||||||||
4-20mA Output Signal | ||||||||||||||
| 1 1/2 | 0-45 | 40 psi @ 70° F | 4" | 4 1/4" | -40° | 175° | 15 | 18-36V DC | Wire Leads | IP68 | Bluetooth | HART | 0000000 | 000000000 |
| Connection Type | Each | |
| 4-pin USB Type A (Male) | 0000000 | 000000 |
Submersible Liquid-Level Transmitters
Best for measuring liquid levels in applications where traditional mounting is difficult, these transmitters sit at the bottom of your tank. They sense liquid levels by measuring the pressure from the weight of the liquid above them. These transmitters continuously send measurements, so you can monitor the status and manage components in your system. Also known as level loggers, level sensors, and pressure transducers.
Transmitters for liquids with solids have sink weights that keep the transmitter in place in applications with moving solids or agitated liquids.
For technical drawings and 3-D models, click on a part number.
For Pressure Range | Overall | Temp. Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ft. of H2O | psi | Accuracy | Max. Pressure | Dia. | Lg. | Min. | Max. | Cable Lg., ft. | Input Voltage | For Container Type | Electrical Connection Type | Environmental Rating | Each | |
4-20mA Output Current | ||||||||||||||
For Liquids | ||||||||||||||
| 0-11.5 | 0-5 | ±0.5% | 7 psi @ 70° F | 1" | 5 5/8" | 32° | 140° | 40 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 0000000 |
| 0-23 | 0-10 | ±0.5% | 15 psi @ 70° F | 1" | 5 5/8" | 32° | 140° | 40 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
| 0-34 | 0-15 | ±0.5% | 22 psi @ 70° F | 1" | 5 5/8" | 32° | 140° | 60 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
| 0-46 | 0-20 | ±0.5% | 30 psi @ 70° F | 1" | 5 5/8" | 32° | 140° | 60 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
For Liquids with Solids | ||||||||||||||
| 0-11.5 | 0-5 | ±0.5% | 7 psi @ 70° F | 3 1/4" | 5 1/4" | 32° | 140° | 40 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
| 0-23 | 0-10 | ±0.5% | 15 psi @ 70° F | 3 1/4" | 5 1/4" | 32° | 140° | 40 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
| 0-34 | 0-15 | ±0.5% | 22 psi @ 70° F | 3 1/4" | 5 1/4" | 32° | 140° | 60 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
| 0-46 | 0-20 | ±0.5% | 30 psi @ 70° F | 3 1/4" | 5 1/4" | 32° | 140° | 60 | 12-36V DC | Closed Tank, Open Tank | Wire Leads | IP68 | 0000000 | 000000 |
Hazardous-Location Submersible Liquid-Level Transmitters
FM and C-FM approved, these transmitters safely measure liquid levels where explosive gas or dust may be present. Set them at the bottom of your tank in applications that make traditional mounting difficult. They sense liquid levels by measuring the pressure from the weight of the liquid above them. All continuously send measurements, so you can monitor status and manage components in your system. Also known as level loggers, level sensors, and pressure transducers.
Transmitters for liquids with solids have an unobstructed sensing element that resists clogging and sludge buildup in water with particulate and sewage.
For technical drawings and 3-D models, click on a part number.
For Pressure Range | Overall | Temp. Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ft. of H2O | psi | Accuracy | Max. Pressure | Lg. | Dia. | Min. | Max. | Cable Lg., ft. | Input Voltage | For Container Type | Electrical Connection | Environmental Rating | Each | |
4-20mA Output Current | ||||||||||||||
For Liquids | ||||||||||||||
| 0-3 | 0-1 | ±0.25% | 10 psi @ 70° F | 6 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 0000000 |
| 0-5 | 0-2 | ±0.25% | 20 psi @ 70° F | 6 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-10 | 0-4 | ±0.25% | 40 psi @ 70° F | 6 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-15 | 0-6 | ±0.25% | 60 psi @ 70° F | 6 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-30 | 0-13 | ±0.25% | 125 psi @ 70° F | 6 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
For Liquids with Solids | ||||||||||||||
| 0-3 | 0-1 | ±0.25% | 10 psi @ 70° F | 5 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-5 | 0-2 | ±0.25% | 20 psi @ 70° F | 5 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-10 | 0-4 | ±0.25% | 40 psi @ 70° F | 5 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-15 | 0-6 | ±0.25% | 60 psi @ 70° F | 5 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
| 0-30 | 0-13 | ±0.25% | 125 psi @ 70° F | 5 3/4" | 1" | -10° | 175° | 40 | 10-35V DC | Open Tank | Wire Leads | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEMA 6P | 0000000 | 000000 |
Float Liquid-Level Transmitters
Easy to set up and use, these transmitters measure liquid levels using a standard float gauge. They continuously send measurements to a receiving device, such as a programmable logic controller, so you can monitor status and manage components in your system.
For technical drawings and 3-D models, click on a part number.
Pipe | Overall | Temp. Range, °F | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tank Depth | Size | Thread Type | Gender | Max. Pressure | Dia. | Lg. | Min. | Max. | Cable Lg., ft. | Input Voltage | For Container Type | Electrical Connection Type | Specifications Met | Each | |
4-20mA Output Current | |||||||||||||||
Polypropylene Plastic Float | |||||||||||||||
| 19" | 1 1/2 | NPT | Male | 100 psi @ 70° F | 1 7/8" | 21" | -40° | 220° | 2 | 12-30V DC | Closed Tank, Open Tank | Wire Leads | CE Marked, C-UL Recognized Component, UL Recognized Component | 0000000 | 0000000 |
316 Stainless Steel Float | |||||||||||||||
| 24" | 2 | NPT | Male | 200 psi @ 70° F | 2 3/8" | 27" | -40° | 220° | 2 | 12-30V DC | Closed Tank, Open Tank | Wire Leads | CE Marked, C-UL Recognized Component, UL Recognized Component | 0000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.
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 |
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 | ||||||||||||||||
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 | 0000000 | 0000000 | 000000 |
| 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 |