Two-Wire Ultrasonic Level Transmitter

Name: Two-Wire Ultrasonic Level Transmitter
Brand: WELK Level

Loop-powered ultrasonic transmitter for 4-20 mA/HART tank level measurement up to 12 m class.

Range class0.2-12 m

Output4-20 mA / HART

Wetted faceETFE / PVDF class

UseWater and chemicals

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Why choose· 01

Built for your duty.

Loop-powered wiring

Two-wire transmitters reduce cable count and integrate cleanly with existing analog input cards.

Chemical compatibility

ETFE, PVDF or PTFE-faced sensor options are considered when vapor or liquid compatibility matters.

False echo review

Nozzle, ladder, agitator and wall echoes are checked before installation.

Engineer-checked selection

WELK checks tank height, maximum level, blind-zone allowance, medium, vapor/foam condition, output signal, power and relay points so the quoted configuration matches the application.

Application-matched configuration

Selection notes focus on real tank conditions, measuring range, process connection, output signal and installation limits.

Product details· 02

How it is selected & specified.

Two-wire ultrasonic transmitters are common for water, wastewater and chemical tanks where a simple 4-20 mA loop is preferred.

Selection must confirm range, blind zone, sensor-face material, ambient temperature, vapor condition and whether HART communication is required.

Two-Wire Ultrasonic Level Transmitter is presented as a configurable WELK product family. Final model limits, wetted materials, process connection, certificate and output signal are confirmed from the selected datasheet before quotation.

Ultrasonic selection depends on blind zone, tank height, vapor, foam, turbulence, temperature gradient and whether a split display, relay output or corrosion-resistant sensor face is needed.

Specifications· 03

Two-Wire Ultrasonic Level Transmitter specification range.

Parameter	Value
Measuring principle	Ultrasonic time-of-flight
Range class	0.2-12 m class
Output	4-20 mA / HART by model
Accuracy class	Approximately 0.15% of range class on suitable installations
Wetted materials	ETFE, PVDF, PTFE or PP by selected sensor
RFQ data	Tank height, maximum level, nozzle, vapor and signal protocol
Display / transmitter	4 segment LCD
Power supply	24VDC/220VAC
Range / measuring length	4m~20m,RS485
Selection checks	Ultrasonic selection depends on blind zone, tank height, vapor, foam, turbulence, temperature gradient and whether a split display, relay output or corrosion-resistant sensor face is needed.

Applications· 04

Where this product works.

Process water tanksChemical day tanksWastewater sumpsPump stationsOpen tanksSumpsWater and wastewaterChemical tanks

Ultrasonic level PTFE

Materials & outputs· 05

Wetted materials & output options.

PVDFPTFE PPCustom rangeProcess connectionWetted material

Send medium, range, tank geometry, process connection and output signal for model review.

Packaging & shipping· 05b

Export packing as standard.

Packed for export with protected sensor head, probe/antenna/chamber support where needed, model label, wiring note and requested inspection or calibration documents.

Packaging and documents →

Spec siblings· 05c

Spec siblings & common two-wire ultrasonic level transmitter specs.

Measuring principle Range class Output Accuracy class Wetted materials RFQ data

FAQ· 06

Two-Wire Ultrasonic Level Transmitter questions.

How do I select Two-Wire Ultrasonic Level Transmitter?

Start from tank height, maximum level, blind-zone allowance, medium, vapor/foam condition, output signal, power and relay points. WELK then confirms the exact model, material and output before quotation.

What is the difference between Two-Wire Ultrasonic Level Transmitter and radar?

Two-Wire Ultrasonic Level Transmitter is selected for its specific duty and limitations. WELK compares it with radar, hydrostatic, float switch when the process data suggests another technology may be safer.

Can Two-Wire Ultrasonic Level Transmitter be customized?

Yes. Range, process connection, wetted material, output signal, cable length, display, switch points, documents and OEM label can be reviewed by product family.

What are the common limits of Two-Wire Ultrasonic Level Transmitter?

Heavy vapor, pressure variation, dense foam, strong turbulence or narrow nozzles can weaken the echo; radar may be safer in those conditions.

Are the listed specifications final for every project?

No. Published values are typical selection ranges. WELK confirms final limits, material, output, certificate and documents from the actual process data before quotation.

Need two-wire ultrasonic level transmitter? Send the conditions.

Attach tank drawings, old instrument photos or datasheets if available.