
مستشعر المستوى بالموجات فوق الصوتية: مبدأ العمل وأنواعه وتطبيقاته الصناعية
مستشعر المستوى بالموجات فوق الصوتية نظرة عامة مستشعر المستوى بالموجات فوق الصوتية هو جهاز غير تلامسي يستخدم لقياس مستويات السوائل أو المواد الصلبة...
الصفحة الرئيسية » المنتجات » أدوات قياس المستوى » مقياس المستوى العائم المغناطيسي


The magnetic float level gauge is an essential instrument for industrial liquid level measurement. It operates by using a magnetic float that moves along the guide tube, transferring liquid level changes to an indicator or signal output device.
Ideal for chemical, oil, water, and corrosive liquid applications, it provides reliable and continuous monitoring of tank levels. The device is designed with robust materials, ensuring excellent durability even under high pressure or harsh environments.
With both direct visual readings and remote electrical outputs, this level gauge supports integration into modern automation systems, helping industries achieve efficient process control.
وصف أدوات قياس المستوى
Magnetic Float Level Gauge-Features
Simple and Reliable Design – Compact structure ensures stable operation, easy installation, and minimal maintenance requirements.
Separated Measuring and Connection Chambers – The working cavity and transmitter chamber are independent, enhancing safety and reliability.
Wide Application for Harsh Media – Suitable for thick, dirty, flammable, explosive, and corrosive liquids, ideal for demanding industrial environments.
Dual Display Options – Equipped with a field pointer and LCD screen for clear, real-time liquid level visualization.
Intelligent Signal Processing – Automatic zero and span calibration without manual switching, simplifying commissioning and adjustments.
High Measurement Accuracy – Precise liquid level detection; minimum adjustment angle can achieve 2°.
Advanced Output Capabilities – 4–20 mA current output with HART protocol support for seamless integration into industrial automation systems.


Applications of Magnetic Float Level Gauge
The Magnetic Float Level Gauge is widely used for continuous liquid level and interface measurement in various industrial processes. Based on buoyancy principles and a robust mechanical structure, it delivers stable and reliable performance even under harsh operating conditions.
تشمل التطبيقات النموذجية ما يلي:
الصناعة الكيميائية
Used for level and interface measurement of corrosive, toxic, and high-viscosity liquids in reactors, storage tanks, and process vessels. Suitable for aggressive media where reliability and safety are critical.
Oil & Gas and Petrochemical Industry
Ideal for monitoring crude oil, refined fuels, and chemical intermediates in storage tanks and separators. The all-metal construction and explosion-proof design ensure safe operation in hazardous areas.
توليد الطاقة
Applied in boiler systems, condensate tanks, and auxiliary vessels for accurate liquid level indication under high-temperature and high-pressure conditions.
معالجة المياه ومياه الصرف الصحي
Used for level measurement in clean water tanks, sewage treatment basins, and sludge systems. Performs reliably in dirty and particle-laden liquids with minimal maintenance.
Pharmaceutical and Food Processing
Suitable for hygienic applications requiring stable and repeatable level measurement. Optional stainless steel materials support clean and controlled process environments.
Shipbuilding and Marine Engineering
Applied in ballast tanks, fuel tanks, and service tanks where vibration resistance and long-term stability are required.
With support for local indication, 4–20 mA signal output, alarm switching, and HART communication, the float level gauge can be easily integrated into PLC, DCS, and industrial automation systems, making it a reliable solution for modern process control.
Magnetic Float Level Meter-Working Principle
The float (interface) level gauge is designed based on the principles of buoyancy and Hooke’s law. The float’s length corresponds to the measurement range.
When the float is suspended on the measuring spring inside the gauge and submerged in the liquid, it is subjected to the combined forces of spring tension, buoyancy, and gravity. The upward displacement of the float is proportional to the spring’s tension, and the change in spring length reflects the liquid level.
This displacement is transmitted to an external indicator via a magnetic coupling, providing a clear and accurate local liquid level reading.
The gauge features a full-metal construction, with the indicator fully isolated from the measured medium. It supports on-site visual display, as well as 4–20 mA two-wire output, switch signals, and HART protocol for integration with industrial automation systems.


Product Structure of Magnetic Float Level Meter
إن Magnetic Float Level Meter adopts a modular all-metal structure with magnetic coupling, ensuring complete isolation between the measured medium and the indicator. According to display and safety requirements, the following configurations are available:
Basic Type
Without LED display, non-explosion-proof design. Suitable for non-hazardous areas requiring reliable local level indication.
LED Display Explosion-Proof Type
Integrated LED digital display in an explosion-proof housing, providing clear on-site indication for hazardous industrial environments.
LCD Display with HART Protocol (Explosion-Proof)
Equipped with an intelligent transmitter, LCD display, and 4–20 mA output with HART communication, enabling remote monitoring and system integration.
Structural Advantages:
Compact design, high reliability, corrosion-resistant construction, and flexible configuration to meet various industrial applications.
معلمة أدوات قياس المستوى
| المعلمة | المواصفات |
|---|---|
| نطاق القياس | 300–6000 mm (customizable per user requirements) |
| دقة القياس | ±1.5%, ±2.0% |
| مادة عائمة | SS304, SS316L, HC, Ti, (customizable per user requirements) |
| كثافة متوسطة | ≥ 0.45 g/cm³ |
| Interface Measurement | Density difference between two media ≥ 0.1 g/cm³ |
| درجة حرارة متوسطة | ≤ 80°C, ≤ 150°C, ≤ 250°C, ≤ 400°C |
| Medium Pressure | Standard: ≤ 4.0 MPa; High-pressure: ≤ 42 MPa |
| تصنيف الضغط | Standard: DN40–DN50 / PN4.0 MPa; DN80–DN100 / PN1.6 MPa High-pressure: DN40–DN50 / PN10.0 MPa Special: per customer request |
| معيار الشفة | HG20592, DIN2501, ANSI, SH, GB (or per user request) |
| اتصال العملية | Flange DN50, G 1.5″ threaded, or per customer requirements |
| إشارة الإخراج | 4–20 mA DC (two-wire system) |
| مقاومة الحمل | 500 Ω (powered by 24V DC) |
| Communication Protocol | HART, Modbus (RS485) |
| مخرج الإنذار | Upper and lower limit switch isolated output |
| سعة الاتصال | Max. 400 VAC 0.05 A, 24 VDC 0.2 A |
| مزود الطاقة | 15–35 VDC, 220 VAC; Lithium battery 3.6 V 7.5 Ah, 220 VAC |
| درجة الحرارة المحيطة | -20 درجة مئوية إلى +60 درجة مئوية |
| مواد الإسكان | SS304, SS316L, or per customer request |
| Indicator Housing | Aluminum alloy, SS304, SS316L |
| مستوى الحماية | IP65, IP67 (IP68 optional upon request) |
| Explosion-proof Rating | Intrinsically safe: Ex ia IIC T6 Ga, Isolated: Ex d IIC T6 Gb |
| Pressure Test | Tested 1.2–1.5× rated pressure per standards before delivery |
إنسترافا OEM/ODM
تركز إنسترافا على تقديم حلول صناعية موثوقة من خلال المنتجات المنتقاة بعناية والتحسين القائم على التطبيقات والتخصيص المرن. نختار الأدوات التي أثبتت كفاءتها من الشركات المصنعة الموثوق بها لضمان جودة متسقة، ونعمل على تحسين الحلول بناءً على ظروف العمل الحقيقية لحل التحديات العملية، ونوفر تكوينات مصممة خصيصًا لتلبية احتياجات التطبيقات المحددة.
تساعد Instrava العملاء على تقليل المخاطر وتحسين الكفاءة وتحقيق نتائج يمكن الاعتماد عليها في البيئات الصناعية المعقدة من خلال الجمع بين الخبرة في الاختيار وفهم التطبيقات.

What types of liquids can the Float Level Gauge measure?
The Float Level Gauge can measure water, oils, acids, alkalis, corrosive chemicals, and viscous fluids. It is suitable for a wide range of industrial applications, including chemical, petrochemical, and food processing environments.
How accurate is the Magnetic Float Level Meter?
Using precision float and guide rod design, this meter provides ±10 mm measurement accuracy. It ensures reliable and long-term stable performance for industrial liquid level measurement applications.
Can the Float Level Gauge connect to automated control systems?
Yes, models with 4–20 mA signal output can integrate with PLC and DCS systems for real-time monitoring, supporting automated control and data logging in industrial processes.
How often should the Float Level Gauge be inspected or maintained?
Routine maintenance includes checking the float and seals every 6–12 months. For aggressive or viscous media, more frequent inspections may be required to maintain measurement accuracy.
What installation considerations are necessary for optimal performance?
Install the gauge vertically and ensure the float moves freely. Avoid contact with tank walls or turbulence in the liquid to maintain accurate and stable level readings.
Is the Float Level Gauge suitable for corrosive or viscous liquids?
Yes, with appropriate material selection such as stainless steel or corrosion-resistant alloys, the gauge can reliably measure aggressive, corrosive, or viscous fluids in industrial tanks.
مبني على الاتساق وليس على الادعاءات
نحن متخصصون في التحليل والكشف الصناعي، مع فهم واضح لبيئات ومتطلبات التشغيل في العالم الحقيقي.
يتم تقييم كل أداة على أساس الأداء والثبات وملاءمة التطبيق - وليس فقط المواصفات أو الأسعار.
نحن نعمل مع مصنعين موثوق بهم لضمان استقرار الإمدادات، والجودة الثابتة، والتسليم الموثوق به.
ترتكز توصياتنا على فهم التطبيق، مما يساعد العملاء على تجنب المشكلات الشائعة وتحقيق نتائج موثوقة.
تم تصميم إنسترافا لتقليل عدم اليقين - بحيث يكون كل قرار تتخذه أكثر وضوحًا وأمانًا وموثوقية.

مستشعر المستوى بالموجات فوق الصوتية نظرة عامة مستشعر المستوى بالموجات فوق الصوتية هو جهاز غير تلامسي يستخدم لقياس مستويات السوائل أو المواد الصلبة...
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