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Rosemount 2120 Liquid Level Switch
Rosemount 2120 Liquid Level Switch is a vibrating fork point level device designed for reliable detection of liquid presence in tanks and pipelines. It offers fast response, no calibration requirement, and robust performance in harsh conditions, making it ideal for safety and control applications.
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Categories: Level Instruments, Level Switches
Description
The Rosemount 2120 Liquid Level Switch operates using vibrating short fork technology, where the fork vibrates at a natural frequency and changes when immersed in liquid, triggering a switching output. This design ensures accurate level detection regardless of fluid properties such as density, viscosity, turbulence, foam, or bubbles. It supports operating temperatures up to 150°C and pressures up to 100 bar (1450 psig), making it suitable for demanding industrial environments. The device offers multiple switching modes (wet-to-dry or dry-to-wet) and adjustable switching delays (0.3 to 30 seconds), helping eliminate false alarms in turbulent or splashing conditions.
In addition, the switch features a compact, all-metal or polymer housing with a wide range of process connections and material options such as 316L stainless steel for corrosion resistance. It requires no calibration and has no moving parts, significantly reducing maintenance needs and improving long-term reliability. The device is SIL 2 certified and approved for overfill protection, making it suitable for safety-critical applications. With built-in diagnostics, magnetic test points, and compatibility with PLC or relay outputs, it provides dependable and efficient level control across various industries.
QTech Safety is a leading supplier of Rosemount 2120 Liquid Level Switch in Ireland, offering competitive prices and fast worldwide shipping across United Kingdom (UK), Germany, France, Italy, Spain, United States USA, Canada, Mexico, and Western Australia (Perth). Buy Rosemount Level Switches from one of Ireland’s most trusted industrial safety equipment suppliers.
Features of Rosemount 2120 Liquid Level Switch
- Vibrating fork (tuning fork) technology
- No calibration required, maintenance-free design
- Temperature up to 150°C and pressure up to 100 bar
- Adjustable switching delay (0.3 to 30 seconds)
- Multiple switching modes (high/low level alarms)
- SIL 2 certified and overfill protection approved
- Resistant to foam, bubbles, turbulence, and vibration
- Wide range of process connections and materials
- Fast response with short fork design
Technical Specifications of Rosemount 2120
- Type: Vibrating fork liquid level switch
- Measurement: Point level detection (high or low level)
- Output: 2-wire 8-16 mA / 3-wire PNP/NPN / Relay / NAMUR
- Process temperature: -40 to +302 °F (-40 to +150 °C)
- Process pressure: Full vacuum to 1450 psi (100 bar)
- Density range: 0.6 to 2.0 g/cm³ (minimum)
- Fork length: Standard 1.7 in (43 mm) / Extended up to 118 in (3 m)
- Materials: 316L SST, Alloy C-276, ECTFE coated
- Process connection: Threaded, flanged, hygienic
- Certifications: SIL 2, hazardous area approvals (ATEX, IECEx, FM, CSA)
- Design: Compact, robust, no moving parts, self-checking
Level Switches Part Number & Configuration Guide
Standard (Example) Part Number
2120D0AT1NAAA0000
This is a reference configuration for the Rosemount Level Switches. It represents one commonly supplied setup and helps customers understand how the part number is structured.
Configurable Part Number Format
2120XXXXXXXXXXXXX
Each X / XX in the part number indicates a selectable option that can be customized based on your application requirements such as Material of Construction, Process Connection Type, Electronic Type, Hazardous Locations Certifications, Surface Finish, Fork Length & Certifications.
✅ Important: Final part number depends on the exact configuration needed for your machinery, environment, and monitoring system.
Applications
The Rosemount 2120 Liquid Level Switch is commonly used in industrial calibration and testing applications, including:
- High and low level alarm in storage tanks
- Overfill protection in oil & gas and chemical industries
- Pump protection (dry run prevention)
- Water and wastewater level control
- Food, beverage, and pharmaceutical liquid detection
Why Choose QTech Safety?
At QTech Safety, we’re more than just a safety supplier we’re your trusted partner in workplace protection and compliance.
Here’s why companies across UK and Ireland (EU) choose us for safety products and training:
- Comprehensive Range of Safety Equipment:
From gas detection and PPE to industrial safety tools, we offer one of the widest selections of trusted brands all at competitive Irish market prices. - Test & Measurement Instruments You Can Trust:
We supply a wide range of test and measurement instruments from the most leading and trusted brands, including industrial sensors, multimeters, oscilloscopes, accelerometers, proximity sensors, and other advanced measurement tools to support accurate diagnostics, condition monitoring, calibration, and maintenance applications. - Expert Health & Safety Training:
We provide professional health and safety training programmes designed to help your workforce stay compliant and confident on the job. - Fast, Reliable Delivery Worldwide:
Whether you’re in Texas United States or Perth Western Australia, our fast delivery service ensures you get your safety equipment quickly and efficiently. - Trusted by European Businesses:
We’re proud to support industries across Europe (UK) with certified safety solutions, expert advice, and responsive customer service.
We Ship Worldwide
At QTech Safety, we supply industrial sensors and instrumentation across Ireland, offering fast and reliable worldwide delivery. Through strong global logistics partnerships, we ensure efficient shipping and professional support for customers in Europe, North America, and Australia.
🡆 Europe (United Kingdom, Ireland, Germany, France, Italy, Spain, and the rest of European Union)
🡆 Australia (Western Australia WA, Queensland QLD, and New South Wales NSW)
🡆 North America (United States, Canada, Mexico)
