Skip to content
SunGeneAgricultural IoT
← All products
Ultrasonic Water Level Sensor

Ultrasonic Water Level Sensor

Equipment options & specifications

Integrated non-contact liquid-level transmitter with selectable 5 to 30 m ranges and 4-20 mA or RS485 Modbus RTU output.

Appearance, connectors and included accessories follow the configuration confirmed in your quotation.

Related application hardware: Water Monitoring

Specifications & version options

Measurement
Non-contact ultrasonic liquid level
Range options
5 / 10 / 15 / 20 / 30 m
Output options
2-wire or 4-wire 4-20 mA; 4-wire RS485 Modbus RTU
Supply options
24 VDC or 220 VAC; 12 VDC on the RS485 configuration only
Accuracy
0.5-1%
Resolution
±3 mm or 0.1% FS, whichever is greater
Show 5 more specification rows

Need to connect this equipment to an existing controller or platform?

Share your current model, a photo or the connection you need. We help assess interfaces, power and the required configuration.

Get selection & integration help

Buying this equipment

Samples & minimum quantity
Ask for a sample or a small pilot. Availability, minimum quantity and sample charges depend on the selected model.
Price & delivery
Range, interface, accessories, quantity and destination affect the quote. Stock, lead time, freight, taxes and delivery terms need confirmation.
Warranty & support
Coverage, duration, exclusions and the fault-assessment process are confirmed for the quoted model before order.
Certificates & documents
Tell us the destination and required standard. We check the exact model, document revision and available evidence; a family listing is not certification.
Review procurement and support details →

Find the right document

Public documents describe this product family and selection options. Wiring, register maps and compliance documents must match the model and version selected for your order.

Open family selection sheet

English · Web page · printable
Current online selection reference

Open selection catalog

Water & Utilities Hardware Catalog
PDF · English · 388 KiB
File revision: 2026-07-22 · 82cac85fcd00

Need documents for engineering or purchasing?

Choose what you need. We first identify the model and revision, then confirm which documents can be supplied. The request does not imply that every document is available.

Public now
Public selection guidance and model-selection catalogue
Check for the selected model
Exact-model datasheet · Wiring / pinout · Register map, protocol or sample data · Model-specific certificates · Calibration and measurement evidence · Dimensions / installation drawing
Project starter files →
Request an engineering package →
From a product family to your order
  1. Family page

    Compare uses, interfaces and configuration options. These are selection references.

  2. SG reference

    An SG code helps identify a sourcing option; it is not a substitute for the manufacturer model or its certificate.

  3. Written quotation

    Confirm the exact model, configuration, photograph, document revisions, accessories, price, delivery and warranty.

Get selection help

Start with a short description. A complete equipment list is not required.

Text stays in this tab for up to 30 minutes while you browse. Saving across reloads is optional below.

A personal email is welcome.

A country and general site description are enough. If the location is undecided, say so.

Up to 5 files, 10 MB each. PDF, JPG, PNG, WebP, CSV, TXT, DOCX or XLSX.

By submitting this form, you acknowledge the privacy notice.

See where the system fits

Equipment in the system

System design, software integration, PLC/SCADA programming and site installation responsibilities are agreed in the written project scope.

How the model is selected

The written quotation ties the site requirement to one reviewed hardware configuration.

Site requirement

Application, medium, mounting and environment

Hardware configuration

Signal, protocol, power and enclosure

Quote confirmation

Model, quantity, certificates and delivery

remote-monitoring integration with field enclosure, gateway, power and industrial equipment

Remote integration context

Sensors, interfaces, enclosure, power and mounting are confirmed against the actual project before quotation.

Check the echo path before selecting ultrasonic level measurement

The reviewed specification supports an integrated non-contact transmitter, but site conditions determine whether the echo will remain stable.

  • Choose a 5, 10, 15, 20 or 30 m configuration. The blind zone and threaded process connection change with the selected range.
  • Mount the sensor axis perpendicular to the liquid surface and keep pipes, braces, ribs, ladders and mixing equipment outside the acoustic beam.
  • Foam, bubbles, mist, steam, turbulence and strong temperature gradients can weaken or distort the return echo.
Show 3 more reviewed selection notes

Model-selection reference

Water & Utilities Hardware Catalog

Compare equipment options in this catalog section.

Open this catalog section
Catalog section
Radar and ultrasonic non-contact level transmitters
equipment references
9
PDF pages
7

SG codes for enquiry

9 sourcing references from “Radar and ultrasonic non-contact level transmitters”. Put an SG code in the RFQ so we can match the same catalog row.

  • SG-RLT-101
  • SG-RLT-102
  • SG-RLT-103
  • SG-RLT-104
  • SG-RLT-105
  • SG-ULT-102
  • SG-ULT-103
  • SG-ULT-104
  • SG-ULT-101
Open this catalog section

Continue product selection

Compare adjacent hardware families for the same monitoring path.

How to choose

  • Select a 5, 10, 15, 20 or 30 m range from the mounting height and maximum liquid level, then keep the configured blind zone above the highest surface.
  • Mount the sensor perpendicular to the liquid surface and keep the acoustic beam clear of pipes, braces, ladders, ribs and mixing equipment.
  • Provide foam, bubbles, mist, steam, turbulence, condensation, direct-sun and temperature-change conditions so ultrasonic suitability can be checked.
  • Choose 2-wire or 4-wire 4-20 mA, or 4-wire RS485 Modbus RTU, together with the compatible power and upstream PLC, RTU or gateway.
Show 1 more selection checks

Compatible with

  • PLC, RTU or data-acquisition inputs accepting 4-20 mA
  • RS485 Modbus RTU masters on the selected communication configuration
  • Tank, reservoir, well-head and open-channel mounting arrangements reviewed for a clear acoustic path
  • 4G, NB-IoT or LoRaWAN telemetry through the selected upstream RTU or gateway

Typical package

  • Integrated ultrasonic level transmitter with the selected measuring range
  • Selected 4-20 mA or RS485 Modbus RTU output and matching power configuration
  • Range-appropriate threaded connection, mounting bracket or stilling arrangement
  • Upstream PLC, RTU or gateway plus cable, surge and enclosure accessories
  • Installation check covering blind zone, beam clearance, surface conditions and acceptance readings

Applications

water-monitoring site with field instruments, an RTU enclosure and tank infrastructure
Instruments, enclosure, power and mounting are selected for the actual tank, well, reservoir or pump station.

Use this integrated transmitter when liquid level can be measured from above without contact and the sensor has a clear acoustic path to the surface. The range, blind zone, process connection, output and power option are selected together. Foam, heavy vapour, turbulence, internal structures or strong temperature gradients must be reviewed before ultrasonic measurement is released for the site.

  • Remote tank and reservoir level monitoring with a clear liquid surface
  • Water-storage, irrigation and well-head installations where top mounting is practical
  • Open-channel or river-level projects after the mounting geometry and echo path are reviewed
  • PLC, SCADA or telemetry projects using 4-20 mA or RS485 Modbus RTU
See related application hardware

What to include in your quote request

  • Mounting height, maximum liquid level and required measuring range
  • Tank / channel dimensions, medium and process connection
  • Foam, bubbles, vapour, turbulence, temperature change and internal obstructions
  • Required 4-20 mA or RS485 Modbus RTU output and connected PLC / RTU / gateway
  • Available power, cable length, enclosure, quantity and project stage
Request Hardware Quotation

Related selection guides

Related resources

Frequently asked questions

Which measuring ranges are available for this ultrasonic level transmitter?

The reviewed configurations are 5, 10, 15, 20 and 30 m. The blind zone, probe size and threaded process connection depend on the selected range, so the mounting height and maximum liquid level are confirmed before quotation.

Which outputs and power options are supported?

The reviewed output options are 2-wire 4-20 mA, 4-wire 4-20 mA and 4-wire RS485 Modbus RTU. The reviewed supply options are 24 VDC or 220 VAC, with 12 VDC available only on the RS485 configuration. The ordered combination is confirmed in the quotation.

When is ultrasonic level measurement a poor fit?

Heavy foam, bubbles, steam, mist, turbulent surfaces, internal obstructions or a mounting angle that is not perpendicular can produce weak or false echoes. Share the tank geometry and surface conditions so ultrasonic, radar or hydrostatic measurement can be compared before selection.

What should I provide when requesting a quote for the Ultrasonic Water Level Sensor?

Mounting height, maximum liquid level and required measuring range; Tank / channel dimensions, medium and process connection; Foam, bubbles, vapour, turbulence, temperature change and internal obstructions; Required 4-20 mA or RS485 Modbus RTU output and connected PLC / RTU / gateway

Where can I compare available model options?

Open the Water & Utilities Hardware Catalog linked on this page. Use it to compare equipment options before requesting a configuration.

Will it work with my existing system?

Compatibility is reviewed against your field signals, protocols and upstream platform. Typical pairings include PLC, RTU or data-acquisition inputs accepting 4-20 mA, RS485 Modbus RTU masters on the selected communication configuration, Tank, reservoir, well-head and open-channel mounting arrangements reviewed for a clear acoustic path.

Product-family reference. Final ordered model and specifications are confirmed in the written quotation.