400℃ High-Temperature Powder Level Measurement with Rotary Paddle Level Switch
Project Background: Challenges in High-Temperature Powder Level Measurement
Rotary Paddle Level Switches face extreme challenges in high-temperature chemical processes. In a chemical manufacturing plant, where process temperatures can reach up to 400℃ and the main media are solid particles and powders, accurate level detection is critical for equipment safety, production continuity, and product quality. However, conventional rotary paddle or other types of level switches often encounter issues in this environment:
- Instruments frequently failed or showed unstable operation at high temperatures.
- High-temperature powders caused sensor adhesion, mechanical wear, and frequent maintenance.
- The service life and reliability of commonly available products were insufficient, affecting continuous production.
After multiple trials, the enterprise found that competitor instruments could not reliably operate under 400℃ for extended periods. Therefore, they chose Jiwei Spin-11A rotary paddle level switches to solve the challenges of high-temperature level measurement.
High-temperature operations at 400℃ caused frequent failures of competitor instruments, prompting the company to adopt Spin-11A rotary paddle level switch for stable and reliable monitoring.
Reasons for Choosing Jiwei Spin-11A Rotary Paddle Level Switch
The Spin-11A standard rotary paddle level switch is designed for most solid particles and powders and features multiple optimizations in design and manufacturing, ensuring reliability under high-temperature, high-dust, and complex operating conditions. Key reasons for selection include:
High-Temperature Adaptability
Spin-11A high-temperature type can operate reliably from -20℃ to 400℃, fully covering production requirements. Competitor instruments in this range often experience delayed response, sensor burnout, or mechanical wear.
Reliability and Durability
- High-quality imported motor and micro-switch ensure efficient operation.
- Dual-bearing structure ensures smooth blade rotation and extends service life.
- Maintains stable operation under high temperature, steam, and dust environments.
Anti-Sticking and Anti-Clog Design
Foldable paddle design and optimized structure prevent material buildup, reducing false triggers.
Ease of Maintenance and Installation
Integrated anti-loosening design combines motor and mechanical control, allowing on-site replacement without recalibration or installation changes.
Safety and Protection
IP65 protection, gas and dust explosion-proof design, suitable for high-dust and complex production environments.
Spin-11A high-temperature rotary paddle level switch adapts to -20℃ to 400℃
Product Overview and Technical Specifications
- Applicable media: solid particles, powders
- Medium density: ≥0.3 g/cm³
- Process temperature: standard: -20～70℃; high-temperature: -20～400℃
- Ambient temperature: -40～85℃
- Process connection: flange (standard/thin), threaded
- Connection material: 304/316L stainless steel
- Paddle speed: 1 R.P.M
- Housing: aluminum alloy
- Protection: IP65
- Cable entry: M20×1.5
- Contact capacity: SPDT 5A/250V AC
- Power supply: 24V DC / 220V AC 50/60Hz
- Explosion protection: Gas: Ex db IIC T6~T1 Gb; Dust: Ex tb IIIC T80℃~T440℃ Db; Dual-proof optional
Spin-11A undergoes full-process production management and strict inspection, demonstrating significantly higher reliability than domestic alternatives, particularly in high-temperature powder applications.
Application Case: 400℃ High-Temperature Powder Process
In practice, the enterprise installed Spin-11A rotary paddle level switch switches on high-temperature powder storage tanks and conveying systems to monitor full and empty material states, ensuring continuous production.
Operating conditions: temperature up to 400℃, high-temperature powder, high dust concentration, and significant steam interference, posing stringent requirements for level detection.
Installation: devices placed on tank top and mid-sections for accurate full/empty monitoring; additional installation at the end of conveying pipelines to prevent blockages or overflow.
Results: Spin-11A provided reliable, prompt response with no false triggers or lag, even at high temperatures. The paddle and housing design prevented material adhesion, enabling long-term stable operation without frequent cleaning. Maintenance intervals were extended, and production continuity improved. Stable level signals supported process control and safe production.
This case demonstrates Spin-11A’s reliability and applicability in high-temperature, high-dust, and complex conditions, highlighting its value and advantages in industrial production.
Conclusion and Value
Spin-11A rotary paddle level switch’s advantages in high-temperature powder processes include:
- High-temperature adaptability: operates reliably from -20℃ to 400℃, outperforming competitors prone to lag, sensor burnout, or mechanical wear above 300℃.
- Structural reliability: dual-bearing design ensures smooth rotation; foldable paddles reduce material buildup; high-quality motor and micro-switch maintain consistent operation under dust-heavy and frequently cycled production.
- Easy maintenance: no frequent calibration required; simple on-site replacement reduces downtime and production loss.
- Safety: gas and dust explosion-proof design with IP65 protection ensures safe operation in dust-heavy, complex environments.
- Cost-effectiveness and supply: controllable price, stable bulk delivery, suitable for large-scale production lines while minimizing extra costs from failures or replacements.
This case clearly shows that Spin-11A rotary paddle level switch is the preferred solution for high-temperature powder level measurement, providing reliable performance, long-term applicability, and strong industry trust.