Anti-corrosion Magnetic Level Gauge

Our Anti-corrosion Magnetic Level Gauge is engineered specifically for severely corrosive chemical medium environments, adopting full plastic non-metallic structural design as the core anti-corrosion solution. Different from metal magnetic level gauges which easily suffer corrosion, rust and perforation when encountering acid, alkali, salt corrosive liquids, this anti-corrosion series takes PP, PVC, PVDF as the whole wetted structure materials (chamber, flange & floating body integrated plastic structure), fundamentally eradicating corrosion failure caused by medium contacting metal components.

Based on communicating vessel measuring principle, the gauge requires no power supply for on-site visual liquid level reading, and supports customized structural configurations for single liquid level measurement and oil-water two-phase interface measurement. It supports one-piece forming up to 6 meters long, combined assembly for extra-high tanks, flexible matching of DIN & ASME international flange standards, and configurable drain & vent ports according to site requirements. This anti-corrosion magnetic level meter focuses on anti-corrosion practicability and on-site maintenance simplicity, widely used in corrosive chemical storage tanks, sewage treatment containers and chemical reaction vessels, solving the pain point of short service life of stainless steel level gauges in acid-base working conditions.

• Integrated Non-metallic Anti-corrosion Structure Chamber, flange and float adopt PP/PVC/PVDF plastic materials integrally, completely isolated from acid, alkali, brine and corrosive solvents, effectively preventing rust, perforation and medium leakage of metal level gauges.
• Dual Measurement Mode: Liquid Level & Layered Interface Adapt to single liquid level monitoring and two immiscible liquid interface detection; the interface measurement requires medium density difference ≥0.2kg/dm³ to meet stratified monitoring demands of various corrosive mixed media.
• Wide Temperature Matching for Different Plastic Materials Matched with PP, PVC, PVDF three material systems to cover -30℃~120℃ working temperature range, select corresponding materials according to actual medium temperature to balance cost and high temperature resistance performance.
• Flexible Pressure Customization Options Standard PN6 / PN10 working pressure, optional PN16/25/40 high-pressure structure, maximum withstand pressure 10 bar, satisfy most atmospheric and low-pressure corrosive storage tank working conditions.
• Self-cleaning Floating Structure & Long Service Cycle Adopt sealed cylindrical floating body design with self-cleaning structure, reduce adhesion of viscous corrosive media on the float surface, avoid float stuck failure and reduce maintenance frequency.
• Ultra-long One-piece Forming & Diversified Installation Single manufacturing length reaches 6000mm; ultra-high measuring height can adopt multi-section splicing assembly mode, compatible vertical center-to-center installation, flanged/threaded connection methods customized on demand.
• Passive Visual Display, No Power Consumption Magnetic linkage bi-color turning column indicator, no electricity required for on-site continuous liquid level observation, intrinsically safe, suitable for explosion-proof chemical workshops.
• Convenient Later Maintenance & Modular Accessories Separable indicator panel, detachable drain valve and vent plug configuration, wear-resistant magnetic turning sheet can be replaced separately on site without disassembling the whole level gauge.

Developed exclusively for severely corrosive chemical working conditions, this anti-corrosion magnetic level gauge adopts an all-plastic non-metallic framework with diversified material combinations to adapt to different temperature environments. All wall thicknesses, sealing configurations and structural standards are optimized to prolong service life in acid, alkali and brine environments, overcoming the defects of rusting and perforation seen in conventional metal level gauges. All technical indicators have passed pressure resistance and corrosion aging testing, and detailed standardized parameters are shown in the table below:

This anti-corrosion magnetic level gauge is specially developed for severely corrosive industrial working conditions where stainless steel and alloy level gauges cannot serve long-term stable operation, main applicable industries as below:

• Fine Chemical & Chlor-alkali Industry Hydrochloric acid, caustic soda, salt solution storage tanks, acid-base reaction kettles, solve the corrosion problem of metal level gauges in strong acid and alkali environments.
• Environmental Water Treatment Industry Pickling wastewater, chemical sewage neutralization tanks, brine sedimentation pools, resist corrosive wastewater erosion and realize stable liquid level monitoring.
• Paper & Pulp Manufacturing Acid soaking tank, waste lye recovery tank in papermaking process, adapt to sulfur-containing, alkaline corrosive pulp medium.
• Energy & Petrochemical Auxiliary Facilities Brine storage tanks, acidic condensate recovery tanks of oil & gas plants, avoid frequent replacement caused by corrosion of conventional level instruments.
• Power & Nuclear Auxiliary System Circulation tanks of chemical dosing system in power plants, nuclear power wastewater buffer containers, achieve maintenance-free long-term monitoring.

Q1: What is the difference between this Anti-corrosion Magnetic Level Gauge and the PP/PVC/PVDF non-metallic magnetic level gauge named by material?

A: The two products adopt the same plastic anti-corrosion structure, but they have different market positioning. The non-metallic version focuses on material introduction for engineering material selection scenarios; this anti-corrosion version takes anti-corrosion performance as the core selling point, oriented to chemical enterprises troubled by level gauge corrosion and frequent replacement, more targeted to solve corrosion pain points in workshop production.

Q2: Which material (PP/PVC/PVDF) should I choose for different corrosive media?

A: Normal low-temperature alkali wastewater can select cost-effective PP material; room-temperature weak acid and salt medium matches PVC; high-temperature strong acid, organic solvent corrosive environment must use PVDF to guarantee service life. Q3: Can this anti-corrosion level gauge measure oil-water interface?

A: Yes, it supports interface detection, but the density difference between two kinds of liquids must reach ≥0.2kg/dm³ to ensure the float can accurately identify the layered boundary of media.

Q4: Does the plastic chamber crack easily under pressure?

A: The plastic pipe wall thickness is customized according to working pressure, standard PN10 structure passes pressure resistance test, as long as it runs within the rated pressure and temperature range, cracking and deformation will not occur.

Q5: Can this anti-corrosion magnetic level gauge be matched with transmitters for remote signal output?

A: The indicator part reserves installation position for magnetic reed switch and magnetic control transmitter, which can be equipped with remote signal components to realize remote liquid level transmission and high-low level alarm control on the basis of local display.

Q6: Is the entire plastic structure resistant to all strong corrosive media?

A: PP, PVC cannot resist strong oxidizing acid such as concentrated nitric acid; PVDF can resist most acids, alkalis and organic solvents. If you encounter special strong oxidizing corrosive media, we will recommend Monel or Hastelloy alloy level gauges instead.

Corrosive acid-base tanks always face the trouble of rapid corrosion and frequent replacement of stainless steel liquid level instruments, which increases production maintenance cost repeatedly. Our anti-corrosion magnetic level gauge uses all-plastic wetted structure to fundamentally avoid medium corrosion, and provides three plastic material schemes to match different temperature and corrosive working conditions, balancing anti-corrosion performance and procurement cost. Our engineering team will select PP/PVC/PVDF materials, match pressure grade and connection standards for you according to your medium composition, temperature, pressure and whether interface measurement is needed. Send your on-site working condition parameters now to obtain customized anti-corrosion liquid level measurement scheme and factory direct quotation.

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