Rotary Paddle Level Switch

Name: Rotary Paddle Level Switch
Brand: WELK Level

Electromechanical point level switch for dry bulk solids in bins, hoppers and silos.

MediaDry bulk solids

DutyFull / empty / demand

PaddleMultiple shapes

OutputSwitch contact

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Why choose· 01

Built for your duty.

Proven solids alarm

Rotary paddles are widely used for high, low and demand level detection in bins and hoppers.

Simple principle

Material covering the paddle stalls rotation and actuates the switch output.

Paddle matched to material

Paddle shape and sensitivity are selected by bulk density and vessel geometry.

Engineer-checked selection

WELK checks medium, alarm height, mounting orientation, connection, output logic, power, contact rating and material requirement 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.

Rotary paddle switches are economical electromechanical devices for dry powders, pellets and granular solids.

They are not normally used for liquids and should be selected carefully for very light, sticky or highly abrasive solids.

Rotary Paddle Level Switch 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.

Point level switch selection starts from medium behavior, alarm point, mounting direction, density or dielectric, buildup risk, process connection, power and contact logic.

Specifications· 03

Rotary Paddle Level Switch specification range.

Parameter	Value
Measuring principle	Motor-driven rotary paddle with stall detection
Media	Dry powders, pellets and granular solids
Alarm points	High, low or demand level
Output	Microswitch contact or relay by model
Paddle	Standard, flexible, hinged or wide paddle by bulk density
RFQ data	Material, bulk density, particle size, vessel wall thickness and alarm point
Accuracy class	5mm
Material options	Metal
Selection checks	Point level switch selection starts from medium behavior, alarm point, mounting direction, density or dielectric, buildup risk, process connection, power and contact logic.
Common limitations	Sticky buildup, coating, turbulence, low density solids, non-conductive liquids or tank-wall material can make one switch principle unsuitable.

Applications· 04

Where this product works.

Grain binsCement silosPlastic pellet hoppersWood chip binsFeed storageHigh level alarmLow level alarmPump protection

Application

Silo & Powder Level

Powder silos and bulk solids

Wetted materials & output options.

304316LStainless SteelCast AluminumProcess connectionMounting bracketWetted 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 rotary paddle level switch specs.

Measuring principle Media Alarm points Output Paddle RFQ data

FAQ· 06

Rotary Paddle Level Switch questions.

How do I choose the switching point for Rotary Paddle Level Switch?

Start from medium, alarm height, mounting orientation, connection, output logic, power, contact rating and material requirement. WELK then confirms the exact model, material and output before quotation.

What is the difference between Rotary Paddle Level Switch and continuous transmitter?

Rotary Paddle Level Switch is selected for its specific duty and limitations. WELK compares it with continuous transmitter, radar, ultrasonic when the process data suggests another technology may be safer.

Can Rotary Paddle Level Switch 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 Rotary Paddle Level Switch?

Sticky buildup, coating, turbulence, low density solids, non-conductive liquids or tank-wall material can make one switch principle unsuitable.

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 rotary paddle level switch? Send the conditions.

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