Explosion-Proof Tuning Fork Level Switch

Name: Explosion-Proof Tuning Fork Level Switch
Brand: WELK Level

Hazardous-area tuning fork level switch for liquid overfill, dry-run and safety interlock duties.

ApprovalEx option by model

MediaLiquids

OutputRelay / NAMUR / transistor

UseHazardous tanks

Request quote Attach files

Why choose· 01

Built for your duty.

Hazardous-area option

Explosion-proof or intrinsically safe electronics are selected from area classification and certificate requirements.

Overfill and dry-run duty

Tuning fork switches are widely used for independent point alarms in process tanks.

Less affected by foam

Liquid tuning fork switching is generally less affected by foam or bubbles than many optical or conductive point sensors.

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.

Explosion-proof tuning fork switches should be treated as safety-related instrumentation and selected from the plant area classification.

WELK confirms SIL, overfill approval, relay logic and proof-test expectations if the buyer intends to use it in a safety loop.

Explosion-Proof Tuning Fork 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

Explosion-Proof Tuning Fork Level Switch specification range.

Parameter	Value
Measuring principle	Vibrating tuning fork
Hazardous area	Ex d, Ex i or certificate option by model
Output	Relay, NAMUR, PNP/NPN or two-wire by electronics
Process connection	Thread, flange or hygienic connection
Media	Liquids; density, viscosity and buildup reviewed
RFQ data	Area classification, certificate, liquid, pressure, temperature, output and alarm logic
Output signal	on/off,PNP,SPDT
Temperature rating	-30-150℃
Range / measuring length	-98KPA-2MPA
Power supply	DC24V

Applications· 04

Where this product works.

Solvent tanksFuel storageChemical reactorsPump protectionOverfill alarmsHigh level alarmLow level alarmOverflow prevention

Application

Chemical Storage Tanks

Chemical and petrochemical storage

Wetted materials & output options.

316L PTFEStainless SteelExplosion-proof optionProcess 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 explosion-proof tuning fork level switch specs.

Measuring principle Hazardous area Output Process connection Media RFQ data

FAQ· 06

Explosion-Proof Tuning Fork Level Switch questions.

How do I choose the switching point for Explosion-Proof Tuning Fork 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 Explosion-Proof Tuning Fork Level Switch and continuous transmitter?

Explosion-Proof Tuning Fork 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 Explosion-Proof Tuning Fork 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 Explosion-Proof Tuning Fork 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 explosion-proof tuning fork level switch? Send the conditions.

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