Introduction
This magnetostrictive float level gauge is a high-precision continuous level and interface measurement instrument engineered for industrial storage tanks, process vessels and oil-water separation equipment. Based on the magnetostrictive time-of-flight sensing principle, it delivers stable, drift-free liquid level and liquid-liquid interface detection, serving as a reliable solution for process monitoring, inventory management and safety interlock in petrochemical, chemical, water treatment, pharmaceutical and food & beverage industries.
Featuring absolute position output, the gauge maintains permanent measurement traceability without recalibration after power outages, eliminating data drift risks and cutting on-site commissioning workload. It achieves ±0.1% full-scale transmitter accuracy with selectable 1mm / 5mm resolution, and supports simultaneous detection of total liquid level and oil-water interface with fast response and excellent long-term repeatability. For reliable measurement, it requires minimum medium density ≥0.5 g/cm³ for level detection, and a density difference ≥0.2 g/cm³ between upper and lower liquids for interface measurement, adapting to most conventional industrial liquids.
Powered by standard 24VDC, the gauge supports two-wire 4–20 mA analog output integrated with HART digital communication, with optional RS485 interface for seamless integration with DCS, PLC and SCADA control systems. Built with a fully hermetic structure and IP66/IP67 ingress protection, it withstands process pressure up to 2.5 MPa and medium temperature up to 100°C, operating reliably across ambient temperatures from -30°C to 75°C in dusty, humid and outdoor harsh environments.
To accommodate diverse corrosive media, multiple wetted material options are available: 304 stainless steel, 316L, titanium, PP and PTFE. It is offered with optional dual explosion-proof certifications - intrinsically safe Exia II CT6Ga and flameproof Exdb II CT4…T6Gb - enabling safe deployment in Class II C hazardous gas zones. Flexible mounting methods including flange, thread and bracket fit various tank structures, while the wear-free sensing design ensures lifelong maintenance-free operation and extended service life, effectively reducing users' long-term operation and maintenance costs.
Technical Data
The table below details the full technical parameters of this magnetostrictive float level gauge, covering measurement performance, process pressure & temperature limits, electrical interfaces, wetted material options, explosion-proof certifications and mounting methods. You can use these specifications to verify compatibility with your on-site working conditions. For tailored solutions for special corrosive media, custom ranges or hazardous area requirements, our technical team is ready to assist.
|
Principle |
Magnetostrictive principle |
|
Resolution |
5mm, 1mm |
|
Precision of transmitter |
±0.1% |
|
Power supply |
24VDC |
|
Signal output |
4-20mA+HART (2-wire) |
|
Medium density |
ρ≥0.5g/cm³ |
|
Interface measurement |
ρ down-ρ up≥0.2g/cm³ |
|
Measuring range |
200mm...3000mm |
|
Process connection |
Flange, Thread, Bracket |
|
Process pressure |
0...2.5MPa |
|
Process temperature |
Max.100℃ |
|
Ambient temperature |
-30...75℃ |
|
Wetted material |
304, 316L, Titanium, PP, PTFE |
|
Electrical connection |
M20*1.5F(standard) 1/2NPT-F 3/4NPT-F |
|
Explosion-proof |
Exia II CT6Ga Exdb II CT4...T6Gb (optional) |
Features
- High-precision Magnetostrictive Sensing, Dual Level & Interface Measurement
Adopting the magnetostrictive time-of-flight principle, it realizes high-precision synchronous measurement of liquid level and liquid-liquid interface (e.g. oil-water interface). Transmitter accuracy reaches ±0.1% FS with optional 1mm / 5mm resolution, featuring fast response, high stability and excellent repeatability. It requires medium density ≥0.5 g/cm³ for level measurement and density difference ≥0.2 g/cm³ for interface detection.
- Absolute Position Output, Zero Recalibration After Power Loss
With absolute position detection mechanism, measurement data remains accurate and traceable even after a complete power outage. No on-site recalibration is needed after power recovery, greatly reducing commissioning time and avoiding measurement deviation caused by power interruption.
- Multiple Signal Outputs, Broad Control System Compatibility
Powered by standard 24VDC, it supports two-wire 4–20 mA analog + HART digital communication as standard, with optional RS485 interface. It can be seamlessly connected with mainstream DCS, PLC and SCADA systems to meet diverse industrial automation integration requirements.
- Dual Explosion-proof Certifications for Hazardous Area Deployment
Optional dual explosion-proof certifications: intrinsically safe Exia II CT6Ga and flameproof Exdb II CT4…T6Gb. It complies with safety specifications for Class II C hazardous gas environments, suitable for flammable and explosive working conditions in petrochemical and pharmaceutical plants.
- Fully Sealed Structure, Reliable in Harsh Environments
Fully hermetic integrated design with IP66/IP67 whole-machine protection, offering excellent anti-pollution performance and pressure resistance up to 2.5 MPa. It operates stably in ambient temperatures from -30°C to 75°C and medium temperatures up to 100°C, suitable for outdoor and severe industrial sites.
- Diversified Wetted Materials & Flexible Installation Methods
Multiple wetted material options: 304, 316L stainless steel, titanium, PP and PTFE, matching different corrosive media. Three mounting solutions: flange, thread and bracket, with standard M20×1.5F electrical connection and optional 1/2NPT-F / 3/4NPT-F interfaces for convenient on-site wiring.
- Wear-free Design, Lifelong Maintenance-free Operation
No mechanical wearing parts inside the sensing unit, with stable performance and extremely low failure rate. No routine maintenance is required during service life, effectively lowering long-term operation and management costs for users.
Product Applications
This magnetostrictive float level gauge is designed for high-precision continuous level and liquid-liquid interface monitoring across small-to-medium industrial storage tanks, process vessels and integrated skid equipment. It excels in scenarios requiring corrosion resistance, explosion-proof safety and long-term unattended operation. The diagram below illustrates its core magnetostrictive measuring principle for your reference:
With multiple wetted material options, dual explosion-proof certifications and flexible mounting methods, it is widely deployed in the following targeted industrial scenarios:
1. Chemical Corrosive Medium Storage Tanks
Ideal for small-to-medium storage tanks holding weak acids, alkalis, organic solvents and corrosive process liquids. It offers a full range of wetted material options including 316L stainless steel, titanium, PP and PTFE to match varying medium corrosion properties. Rated for 2.5 MPa process pressure and available with both intrinsically safe and flameproof explosion-proof certifications, it ensures reliable and compliant measurement in chemical production workshops.
2. Oil-Water Separation & Grease Interception Systems
Specially suited for oil-water separators, oily wastewater tanks and petrochemical separation units. It supports simultaneous detection of total liquid level and oil-water interface, requiring a minimum density difference of 0.2 g/cm³ between upper and lower liquid layers. With selectable 1mm high resolution and fast response speed, it accurately tracks interface level changes to support steady separation process control.
3. Pharmaceutical & Fine Chemical Process Vessels
Applied to solvent storage tanks, preparation kettles and intermediate liquid vessels in pharmaceutical and fine chemical plants. The Exia II CT6Ga intrinsically safe version meets safety requirements for clean workshops and flammable solvent environments. 316L stainless steel wetted parts adapt to sanitary process standards, and its absolute position output eliminates recalibration needs and avoids production interruption during batch changeovers.
4. Water Treatment Dosing & Regulating Tanks
Deployed in chemical dosing tanks, regulating reservoirs and intermediate water pools of water treatment systems. Corrosion-resistant PP and PTFE material options adapt to various chemical reagents and sewage media. IP66/IP67 ingress protection ensures stable long-term operation in humid, dusty outdoor water plant environments, and its wear-free maintenance-free design greatly reduces daily inspection and maintenance workload.
5. Lubrication & Hydraulic Oil Station Units
Perfect for compact lubricating oil tanks, hydraulic power units and built-in equipment oil tanks. Its minimum 200mm measuring range and high-resolution sensing perfectly fit compact tank structures. Fast response speed tracks real-time oil level fluctuations, and standard 4–20mA + HART output seamlessly integrates with equipment control systems for oil level alarm and interlock protection.
6. Outdoor Skid-mounted & Integrated Equipment
Suitable for skid-mounted treatment units, mobile fuel stations and integrated process packages. Three mounting options (flange, thread, bracket) adapt to compact skid structures and limited installation space. Wide ambient temperature tolerance from -30°C to 75°C and IP67 protection support long-term outdoor unattended operation, with no routine maintenance required throughout its service life.
Product Guarantees
We deliver full-cycle quality and performance commitments for every magnetostrictive float level gauge, covering raw material traceability, production quality control, factory calibration and after-sales service, to ensure stable, reliable long-term operation in your actual working conditions.
1. Material & Sealing Workmanship Guarantee
All wetted components are made of traceable industrial-grade materials, with optional 304, 316L stainless steel, titanium alloy, PP and PTFE to match different corrosive media. The gauge adopts a fully hermetic integrated structure with precision welding process, ensuring reliable sealing, pollution resistance and long service life under 2.5 MPa working pressure.
2. Measurement Performance Guarantee
Based on mature magnetostrictive time-of-flight sensing technology, each unit is factory calibrated to achieve ±0.1% full-scale accuracy with selectable 1mm / 5mm resolution. It outputs absolute position data, guaranteeing zero measurement drift and no on-site recalibration required after power interruption. It supports simultaneous liquid level and interface detection with fast response and excellent long-term repeatability.
3. Environmental & Safety Compliance Guarantee
The whole machine is rated IP66 / IP67 ingress protection, operating stably in dusty, humid and outdoor harsh environments across -30°C to 75°C ambient temperature. Optional dual explosion-proof versions (Exia II CT6Ga intrinsically safe / Exdb II CT4…T6Gb flameproof) comply with safety specifications for Class II C hazardous gas zones.
4. Factory Full Inspection Quality Control
Every unit undergoes full-range calibration, pressure tightness test and electrical performance inspection before delivery, with complete factory test records attached. Unqualified products are strictly rejected to ensure the delivered equipment fully matches the published technical parameters.
5. Operation & After-sales Service Guarantee
We provide a 12-month limited warranty against manufacturing defects. With its wear-free sensing structure, the gauge requires no routine maintenance during its service life. Our professional technical team offers full-cycle support including model selection guidance, installation commissioning and daily troubleshooting.
FAQ
Q1: How does this magnetostrictive level gauge work?
A1: It uses magnetostrictive time-of-flight technology to calculate float position via torsional wave travel time, for high-precision level and interface measurement.
Q2: What is the accuracy? Can it measure oil-water interface?
A2: ±0.1% FS accuracy, 1mm/5mm optional resolution. Supports simultaneous liquid level and interface measurement.
Q3: What are the density requirements for measurement?
A3: Medium density ≥0.5g/cm³ for level measurement; density difference ≥0.2g/cm³ for interface measurement.
Q4: What wetted materials can I choose?
A4: 304, 316L stainless steel, titanium, PP and PTFE for different corrosive media.
Q5: Does it have explosion-proof certification?
A5: Optional Exia II CT6Ga intrinsically safe and Exdb II CT4…T6Gb flameproof versions.
Q6: What power and signal outputs are supported?
A6: 24VDC powered, standard 4-20mA+HART two-wire output, RS485 optional.
Q7: What installation methods are available?
A7: Flange, thread and bracket mounting; standard M20×1.5F electrical connection.
Q8: What are the pressure and temperature limits?
A8: 0–2.5MPa process pressure, max 100°C medium temperature, -30~75°C ambient.
Q9: Need recalibration after power failure?
A9: No. Absolute position output ensures zero drift, no recalibration required after power recovery.
Q10: Can it be used outdoors?
A10: Yes. IP66/IP67 protection, dustproof and waterproof for long-term outdoor use.
Q11: Does it need regular maintenance?
A11: No. Wear-free structure, no routine maintenance needed, only regular appearance inspection.
Q12: What about warranty and support?
A12: 12-month warranty against manufacturing defects, full technical support for selection and installation.
If you require this magnetostrictive float level gauge, please submit your inquiry with specific medium properties, working parameters and explosion-proof requirements. Our technical team will recommend the optimal configuration based on your actual working conditions.
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