What to do if my Rosemount Switch 2120 does not switch?
If your Rosemount 2120 Switch isn't switching, begin by checking the power supply. If you have a direct load switching electronics model, verify the load. Also, you may need to replace the 2120, or carefully clean the fork. If the LED is on, wait 5 seconds as this could be normal.
Why is my Rosemount Switch 2120 switching faulty?
Faulty switching of your Rosemount 2120 Switch can be due to several factors. If turbulence is the cause, try setting a longer switching time delay. If excessive electrical noise is the problem, suppress the source of the interference. Also, ensure that the cassette is the one originally supplied with your Rosemount 2120; if it's from another unit, fit the factory-supplied cassette and then calibrate.
General| Type | Vibrating Fork Level Switch |
|---|---|
| Application | Liquid level detection |
| Process Temperature Range | -40 to 302 °F (-40 to 150 °C) |
| Housing Material | Aluminum or Stainless Steel |
| Wetted Parts Material | 316L Stainless Steel |
| Process Pressure Range | Up to 1450 psig (100 barg) |
| Output | PNP |
| Ingress Protection | IP66/IP67 |
| Certifications/Approvals | ATEX, FM, CSA, IECEx |
| Process Connection | Threaded or Flanged |
Covers potential risks like death, serious injury, explosions, burns, and electrical shock from the device.
Details the Rosemount 2120 as a liquid point level switch using vibrating fork technology for various liquid applications.
Provides advice on handling, installation, and environmental protection for the Rosemount 2120.
Offers guidance on fork placement, support for extended lengths, housing cover sealing, and insulation for the device.
Details the various electronics cassettes (Direct Load, PNP/PLC, Relay, NAMUR, 8/16 mA) for electrical connections.
Guides users on setting the mode switch and time delay, and interpreting LED indications.
Explains how to perform a functional test of the device using its magnetic test point.
Instructions for device inspection, cleaning, and obtaining spare parts.
A chart detailing common faults, their symptoms, and recommended actions for resolution.
Lists compliance with European directives like ATEX, PED, EMC, and LVD, including CE-mark.
Details FM and CSA explosion-proof and intrinsically safe approvals for hazardous area installations.
Lists ATEX and IECEx certificates and markings for flameproof and intrinsic safety.
Provides instructions for CSA and FM explosion-proof approvals, including usage, installation, and material requirements.
Covers intrinsic safety and non-incendive approvals, including temperature limits and precautions.
Details ATEX and IECEx instructions for flameproof and intrinsically safe equipment in hazardous areas.
Provides ATEX and IECEx instructions for intrinsically safe equipment in hazardous areas with gases and dusts.
States the conformity of the Rosemount 2120 Series Vibrating Fork Liquid Level Switch to European Community Directives.
Lists standards applied for EMC, ATEX, and Low Voltage directives for various models.
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