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Product Details

Rosemount 2120 Vibrating Fork Liquid Level Switch

Detailed Product Description

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, basic self-checking functionality, 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.

1. Function virtually unaffected by flow, turbulence, bubbles, foam, vibration, solids content, coating, properties of the liquid, and product variations

2. No need for calibration and requires minimum installation procedures

3. Easy terminal access, polarity insensitive and short circuit protection

4. No moving parts or crevices means virtually no maintenance

5. Basic electronic self-checking functionality

6. Visible Heartbeat LED shows device status

7. Adjustable Switching Delay for turbulent ⁄ splashing applications
8. Local Magnetic Test Point makes functional test easy
9. Small in size and weight, short fork length up to 118-in. (3 m)

10. "Fast Drip" Fork Design gives quicker response time especially with viscous liquids

11. General area, Explosion ⁄ Flameproof, and Intrinsically Safe options

Features & Benefits

1. The fully featured 2120 is ideal for almost all liquid applications

2. Wide choice of materials of construction

3. Complete range of process connections

4. Four switching mechanisms configurable for your application

5. Electronic self-checking and condition monitoring

6. Mode select ⁄ user adjustable time delay switch

7. SIL 2 suitable

Key Specifications
Approvals
Certification	Explosion proof certification, Intrinsically Safe, Ordinary Location, No hazardous area certification, Overfill Protection (DIBt ⁄ WHG), and SIL2
Construction
Housing	Plastic, Stainless steel, or Aluminum
Wetted Material	316L stainless steel (1.4404), ECTFE/PFA copolymer (coated 316L SST), or Corrosion Resistant Nickel Alloy C
IP Rating	IP66 ⁄ 67 to Type 4X
Connections
Process Connection	Threaded, Flanged, or Hygienic
Electrical
Electrical Connection	Terminal Block
Output	Direct load switching (ac or dc) DPDT Relay output PNP for Programmable Logic Controllers Self-check, condition monitoring
Operating Conditions
Process	-40 to 302 °F (-40 to 150 °C)
Temperature
Process Pressure	1450 psi at 122 °F (100 barg at 50 °C)
Note: Extended Lengths are Availalble

Applications for the Rosemount 2120 Vibrating Fork Liquid Level Switch

Rosemount 2120 can be used for point level measurements on liquids in most processes and most industries. Applications include:
Overfill protection
High and low level alarm
Pump control ⁄ limit detection
Pipe installation (pump protection)
Hygienic applications
Wireless applications (when used in conjunction with The Rosemount 702)
Vessel leak detection
Water ingress detection