Rotary Level Switch for Bulk Solids Detection | SIL2 Certified & Explosion Proof Control
Instrava Curated Instruments — Built on carefully selected industrial technologies, our rotary level switch delivers high-reliability, safe, and stable level detection for bulk solids, even in harsh and hazardous environments.
This rotary level switch for powder and granular material level detection uses a motor-driven paddle mechanism to provide accurate switching signals for silos, hoppers, and industrial storage systems.
✔ SIL2 safety certified
✔ Adjustable torque for different densities
✔ Explosion-proof for dust and gas environments
Liquid Level Switches Description
Rotary Level Switch Advantages for Industrial Bulk Material Control
Reliable Rotary Level Switch with Motor-Driven Detection Principle
This rotary level switch for bulk solids operates by:
- A synchronous motor driving a rotating shaft and paddle
- Material blocking the paddle, stopping rotation
- Internal detection mechanism triggering a switch signal
When material drops, the spring mechanism resets automatically, ensuring continuous and reliable operation.
Adjustable Torque Rotary Level Switch for Different Material Densities
The rotary level switch with adjustable spring torque enables:
- Detection of materials with density ≥ 0.5 g/cm³
- Flexible adjustment for light powders or heavy solids
- Stable and accurate switching across applications
Overload Protection Rotary Level Switch with Slip Clutch Design
This rotary level switch with overload protection features:
- Automatic clutch slipping under excessive load
- Protection of motor and internal components
- Extended product lifespan in harsh conditions
Sealed Bearing Rotary Level Switch for Dust Protection
With innovative sealing design and bearing support, this dustproof rotary level switch:
- Prevents dust ingress along the shaft
- Ensures long-term stable operation
- Suitable for heavy dust environments like cement and grain
Easy Maintenance Rotary Level Switch with Accessible Structure
This industrial rotary level switch allows:
- Internal inspection without full removal
- Quick maintenance and reduced downtime
- Improved operational efficiency
Rotary Level Switch Applications for Powder and Granular Materials
Rotary Level Switch for Silo and Hopper Level Detection
This rotary level switch for silo level monitoring is widely used in:
- Cement silos
- Grain storage systems
- Plastic pellet hoppers
- Bulk material storage tanks
Rotary Level Switch for Food, Chemical, and Pharmaceutical Industries
Suitable as a rotary level switch for industrial bulk solids, including:
- Food powders (flour, sugar, starch)
- Chemical powders and granules
- Pharmaceutical raw materials
Explosion Proof Rotary Level Switch for Hazardous Areas
This explosion-proof rotary level switch is certified for:
- Gas environments: Ex db IIC T1–T4 Gb
- Dust environments: Ex tb IIIC T135°C–T450°C Db
Ensuring safe operation in flammable and explosive environments.
Liquid Level Switches Parameter
Rotary Level Switch Technical Specifications
| Parameter | Specification |
|---|---|
| Measuring Principle | Motor-driven Rotary Paddle |
| Medium | Powders / Granular Solids |
| Power Supply | 24V DC / 220V AC (50/60Hz) |
| Power Consumption | 4W |
| Output | SPDT Relay Output |
| Contact Capacity | 5A / 250V AC |
| Paddle Speed | 1 RPM |
| Alarm Torque | 1.0 kgf·cm |
| Adjustable Torque | Yes (spring adjustment) |
| Detectable Density | ≥ 0.5 g/cm³ |
| Process Temperature | -40°C to 400°C |
| Ambient Temperature | -40°C to 80°C |
| Process Connection | 1-1/2″ NPT / Flange |
| Protection Rating | IP65 |
| Process Pressure | Atmospheric |
| Insulation Resistance | ≥ 50 MΩ |
| Explosion Proof | Ex db IIC T1–T4 Gb / Ex tb IIIC |
| Safety Certification | SIL2 |
| Cable Entry | M20×1.5 / 1/2″ NPT |
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How does a rotary level switch work?
A rotary level switch uses a motor-driven paddle that rotates continuously. When material blocks the paddle, rotation stops, triggering a switch signal. When material clears, the paddle resumes rotation automatically.
What materials can a rotary level switch detect?
A rotary level switch for bulk solids can detect:
- Powders (cement, flour, ash)
- Granules (plastic pellets, grains)
- Solid bulk materials with density ≥ 0.5 g/cm³
Why is adjustable torque important in rotary level switches?
A rotary level switch with adjustable torque allows users to adapt the sensitivity based on material density, ensuring accurate detection without false alarms.
Can rotary level switches operate in hazardous environments?
Yes, explosion-proof rotary level switches are available with gas and dust certifications, making them suitable for chemical plants, silos, and industrial processing systems.
What safety certifications does this rotary level switch have?
This industrial rotary level switch is SIL2 certified, ensuring high reliability for safety-critical applications in industrial automation systems.
What are typical applications of rotary level switches?
A rotary level switch for silo level detection is commonly used for:
- High/low level alarms
- Hopper level monitoring
- Conveyor control
- Bulk material handling systems
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