Rosemount 2120 - Vibrating Fork Liquid Level Switch 

Superior Reliability in a Universal Package

The Rosemount 2120 is based on vibrating short fork technology, making it suitable for virtually all liquid applications. Features include a complete range of process connections, wide choice of housing and wetted parts materials, four different switching functions, extended fork lengths, hazardous area, selfchecking and condition monitoring, and overfill approvals. The 2120 can withstand temperatures up to 302°F (150°C) and pressures to 1450 psig (100 barg). This combination of features makes it configurable to almost all requirements.

  • Function virtually unaffected by flow, turbulence, bubbles, foam, vibration, solids content, coating, properties of the liquid, and product variations
  • No need for calibration and requires minimum installation procedures
  • Easy terminal access, polarity insensitive and short circuit protection
  • No moving parts or crevices means virtually no maintenance
  • Electronic, self-checking and condition monitoring – Visible Heartbeat LED gives status and health information
  • Adjustable Switching Delay for turbulent/splashing applications
  • Magnetic Test Point makes functional test easy
  • Small in size and weight, short fork length up to 118-in (3 m)
  • "Fast Drip" Fork Design gives quicker response time especially with viscous liquids
  • General area, Explosion/Flameproof and Intrinsically Safe options
DocumentationFeatures & BenefitsSpecificationsApplicationsAssociated Products
 Approvals & Certificates
 Site Quality & Calibration Certificates
 Declaration of Conformity: Functional safety according to IEC 61508
155 KBpdfOctober 2005
English
 Product & Service Documentation
 Brochures
 Brochure: Level Selection Guide
8 MBpdfApril 2009BA
English
 Brochure: Rosemount 2100 Series Vibrating Fork Liquid Level Switches
1 MBpdfMay 2009AA
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 Brochure: Rosemount and Mobrey Process Level Instrumentation
5 MBpdfApril 2009BA
English
 Data Sheets - Bulletins - Catalogs
 Product Data Sheet: Rosemount 2120 Vibrating Fork Liquid Level Switch
823 KBpdfFebruary 2008DB
English
 Proven Result: Rosemount Vibrating Fork Liquid Level Switches
219 KBdocJuly 2009AA
English
 Drawings & Schematics
 Type 1 Drawing: Standard Drawing
347 KBpdfJuly 2005AA
English
 Manuals & Guides
 Manual: Replacement and Calibration of Electronic Spare (PCB) Cassettes - Rosemount 2120 Vibrating Fork Liquid Level Switch - Manual Supplement
456 KBpdfJuly 2005AA
English
 Manual: Rosemount 2120 Vibrating Fork Liquid Level Switch
1 MBpdfJune 2007DA
English
 Proven Results
 Proven Result: Cedar Falls Utilities Reduces Maintenance Costs With Vibrating Fork Technology
77 KBpdfAugust 2009AA
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 Proven Result: Maintenance Free Level Switch Optimizes Protection of Equipment
156 KBpdfOctober 2006BA
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 Proven Result: Major Offshore Producer Reduces Maintenance Costs and Increases Separation Efficiency
109 KBpdfNovember 2008AA
English
 Proven Result: Power Station Manages High and Low Level Control in Aggressive Chemicals with Level Switch
168 KBpdfOctober 2006BA
English
 Proven Result: Refinery Improves Operation of Critical Turbine Pumps with Vibrating Fork Technology
100 KBpdfApril 2009AA
English
 Proven Result: Rosemount 2120 Leakage Control on Double-Walled Tanks
66 KBpdfJuly 2005
English
 Proven Result: Switch Ensures Full Drainage of Vessel
119 KBpdfOctober 2006BA
English
Quick Links 

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