INDUSTRY COMPONENT

Level Sensor

Level sensor for continuous monitoring of molten metal height in industrial furnaces and casting systems.

Component Specifications

Definition
A precision industrial sensor designed to measure and monitor the height of molten metal in real-time within furnaces, ladles, and casting systems. It ensures optimal metal level control to prevent overflow, maintain consistent casting quality, and enhance operational safety in high-temperature metal processing environments.
Working Principle
Operates primarily on non-contact measurement principles such as radar, laser, or ultrasonic technologies to detect the surface level of molten metal. Some variants use contact methods with refractory probes. The sensor emits signals that reflect off the metal surface, calculating distance based on time-of-flight or phase shift, providing continuous, accurate level data to the control system.
Materials
High-temperature resistant materials: alumina or zirconia ceramic housing, stainless steel (316L) or Inconel alloy body, refractory-coated sensing elements, and fiber-optic or shielded cables.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Accuracy±2 mm
Power Supply24 VDC
Output Signal4-20 mA, HART, or digital (Modbus/Profibus)
Response Time<1 second
Measurement Range0-5 meters
Protection RatingIP67/NEMA 4X
Temperature RangeUp to 1600°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 13584, DIN 19266, IEC 61508

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Thermal damage from excessive temperatures
  • Signal interference from electromagnetic fields in foundries
  • Mechanical failure due to thermal expansion/contraction
  • Calibration drift over time
FMEA Triads
Trigger: Prolonged exposure to temperatures above rating
Failure: Sensor housing degradation or electronic failure
Mitigation: Use sensors with appropriate temperature ratings, implement cooling systems, and schedule thermal inspections.
Trigger: Build-up of slag or oxides on sensor face
Failure: Inaccurate readings or signal loss
Mitigation: Regular cleaning protocols, use of self-cleaning sensor designs, and installation of protective shrouds.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1% of full scale under standard conditions
Test Method
Calibration against certified reference levels in controlled high-temperature environments, following ISO/IEC 17025.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Level Sensor

10 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Yantai Wepower Electronic Co., Ltd.
Shandong, CN
Founded 2003
CE ROSH Reach Explosion-proof +3
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Float Ball Level Sensor”
View source page ↗ wepower-electronic.com · recorded 2026-08-26
BOC Autoparts
Ningbo, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Oil Level Sensor”
View source page ↗ bocautoparts.com · recorded 2026-09-14
Changsha Zoko Link Technology Co., Ltd.
Changsha, Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Level Sensors”
View source page ↗ niubol.com · recorded 2026-09-05
Chengdu Sentec Technology Co., Ltd.
Chengdu, Sichuan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Level sensor”
View source page ↗ cdsentec.com · recorded 2026-09-08
China IoT Devices Company
Beijing, CN
Also makes: Level Sensors
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wireless Level Sensors”
View source page ↗ chinaiotdevices.com · recorded 2026-09-15
Feejoy Technology (ShangHai) Co., Ltd.
Shanghai, CN
Also makes: Flow Sensor, Flow Meter, Pressure Gauge/Sensor and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “物液位仪表系列 Level Sensor 01”
View source page ↗ feejoy.com · recorded 2026-08-31
Greegoo Electric
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Liquid Level Sensor”
View source page ↗ greegoo.com · recorded 2026-08-26
Hangzhou Fray Tech Co., Ltd.
Hangzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Water Level Sensor”
View source page ↗ fraysolutions.com · recorded 2026-09-01
Holykell
Changsha, Hunan, CN
Also makes: Pressure Switch, Level Sensors, API Interface and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Level sensors”
View source page ↗ holykell.com · recorded 2026-09-13
Hunan Firstrate Sensor Co., Ltd.
Changsha, Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Liquid Level Sensors”
View source page ↗ firstsensor.com.cn · recorded 2026-09-08

Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

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Frequently Asked Questions

What is the typical lifespan of a molten metal level sensor?

With proper maintenance, 2-5 years depending on operating temperature, exposure to slag, and thermal cycling frequency.

How does the sensor handle slag or dross on the metal surface?

Advanced signal processing filters out interference from surface impurities, and some models include automatic cleaning cycles or use frequencies that penetrate thin slag layers.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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