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NivoBob NB 4200 Plumb Bob Sensor for Bulk Level Control

The NB 4200 plumb bob sensor delivers reliable continuous level measurement for bulk solids in industrial silos. Designed for dusty, sticky, and low dielectric materials, it ensures accurate inventory tracking and prevents overfilling or material shortages. Its electromechanical operation provides consistent performance across various industries, making it ideal for efficient storage management, process automation, and improved operational safety in demanding bulk handling environments.

Category Level
Brand UWT
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Technical details and application highlights

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The NB 4200 plumb bob sensor is engineered for continuous level measurement in bulk storage silos handling a wide range of solid materials. Using a proven electromechanical lot-sensor principle, it provides dependable and accurate readings even in challenging environments. This makes it a trusted solution for industries requiring precise inventory control and process efficiency.

Key Features

  • Continuous level monitoring for bulk solids
  • Reliable operation in dusty and sticky materials
  • Accurate measurement in low dielectric (low DK) media
  • Robust aluminium housing with high protection rating
  • Multiple signal outputs for flexible system integration
  • Self-diagnostics for improved operational reliability

Application

The NB 4200 is widely used in industrial storage silos across sectors such as cement, food processing, agriculture, plastics, and chemical industries. It is ideal for measuring powders, granules, and other bulk solids where conventional sensors may fail due to dust accumulation or material adhesion. Its consistent performance helps maintain optimal stock levels and ensures uninterrupted production processes.

Design & Functionality

This plumb bob sensor operates through an electromechanical measuring system that lowers a weight onto the material surface to determine level accurately. The system adapts well to varying material properties, ensuring dependable readings regardless of bulk density or surface conditions.

Total Crossed Beams

The NB 4200 design ensures stable measurement by maintaining consistent mechanical movement and controlled sensing operation, reducing fluctuations caused by uneven material surfaces.

Beam Pitch Options

Flexible configuration allows adaptation to different silo sizes and material types, ensuring precise level detection across varied storage conditions.

Intrinsic Synchronism

The sensor maintains synchronized measurement cycles, delivering consistent and repeatable results for accurate monitoring and process automation.

Operational Advantages

The NB 4200 enhances operational efficiency by minimizing measurement errors, reducing downtime, and enabling better inventory control. Its ability to perform in dusty and sticky environments ensures long-term reliability, making it a preferred solution for bulk material handling systems.

Parameter

Details

Measurement PrincipleElectromechanical Lot-Sensor
Measuring TaskContinuous level measurement
MediumSolids
Mounting PositionTop / Angled (top) / On a socket
Ambient Temperature-40°C to +60°C
Process Temperature-40°C to +80°C
Process Pressure-0.2 bar to +0.2 bar
Housing MaterialAluminium
Protection RatingIP66, Type 4
Flange Connection≥ DN100 / ≥ 2"
Wetted MaterialsAluminium, Stainless Steel (304, 301, 303), PVC, PA
Mechanical LoadStandard motor: 0.8 kN
Power Supply115V AC / 230V AC / 20–28V DC
Signal Output4–20 mA, Relay, Modbus RTU, Profibus DP
ApprovalsCE, ATEX, FM, TR-CU
Ex MarkingsEx t
FeaturesSelf diagnostics, Menu-driven quick start, Volume table
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