Rosemount 2120 Level Switch – Vibrating Fork
Part no.
The Rosemount 2120 Level Switch is a vibrating fork level switch designed to provide reliable point level detection for liquid applications across marine, offshore, industrial, and process environments.
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Rosemount 2120 Vibrating Fork Level Switch
The Rosemount 2120 Level Switch is a vibrating fork level switch designed to provide reliable point level detection for liquid applications across marine, offshore, industrial, and process environments. Using proven vibrating fork technology, the Rosemount 2120 delivers accurate high-level and low-level switching without requiring calibration and without the need for moving mechanical parts.
Designed to operate reliably under challenging process conditions, the Rosemount 2120 remains largely unaffected by turbulence, foam, vibration, bubbles, coating, or changes in liquid properties. Its robust design, SIL2 safety certification, and adjustable switching delay make it well suited for critical level monitoring and protection applications.
Key Features
- Reliable high level and low level switching
- No moving mechanical parts
- No calibration required
- Suitable for a wide range of liquid applications
- Adjustable switching delay for turbulent conditions
- SIL2-certified safety functionality
- Fast response in viscous products
- Heartbeat LED for device status indication
- Magnetic test point for simple functional testing
- Electronic self-diagnostics and condition monitoring
- Marine and hazardous area approvals available
- Resistant to foam, bubbles, coating, and vibration
Typical Applications
The Rosemount 2120 is ideal for:
- Cargo tanks
- Fuel oil tanks
- Ballast tanks
- Chemical storage tanks
- Process vessels
- Water treatment systems
- Pump protection applications
- Overfill prevention systems
- Marine tank monitoring systems
- Offshore process installations
Technical Specifications
| Specification | Details |
|---|---|
| Product | Rosemount 2120 |
| Type | Vibrating Fork Level Switch |
| Manufacturer | Emerson Rosemount |
| Measurement Principle | Vibrating Fork Technology |
| Communication Options | Direct Load, PLC/PNP, Relay, 8/16 mA, NAMUR |
| Minimum Liquid Density | 600 kg/m³ (37.5 lb/ft³) |
| Viscosity Range | 0.2 to 10,000 cP |
| Operating Pressure | Full Vacuum to 100 bar (1450 psi) |
| Operating Temperature | -40°C to +150°C (-40°F to +302°F) |
| Diagnostics | Electronic Self-Checking & Condition Monitoring |
| Functional Safety | SIL2 Certified to IEC 61508 |
| Marine Approvals | Marine Type Approved |
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