CAUTION
The products described in this document are NOT designed for nuclear-
qualified applications.
•
Using non-nuclear qualified products in applications that require
nuclear-qualified hardware or products may cause inaccurate readings.
•
For information on Rosemount nuclear-qualified products, contact your
local Emerson Sales Representative.
Individuals who handle products exposed to a hazardous substance can
avoid injury if they are informed of and understand the hazard.
•
If the product being returned was exposed to a hazardous substance as
defined by Occupational Safety and Health Administration (OSHA), a
copy of the required Safety Data Sheet (SDS) for each hazardous
substance identified must be included with the returned level switch.
1.2
Applications
A Rosemount 2521 Solids Level Switch is used for monitoring the level of
bulk materials in all types of containers and silos.
The level switch can be used with all powdery and granulated bulk materials
that do not show a strong tendency to form crusts or deposits. The
detection of solids in a liquid is also possible.
Three different housing options are available:
•
Standard
—
for installations in non-hazardous area (ordinary locations)
—
for dust-ignition proof installations in hazardous areas
•
Type 'D'
—
for flameproof/explosion-proof/dust-ignition proof installations in
hazardous areas (classified locations)
•
Type 'DE'
—
same as Type 'D' but with a terminal box (increased safety)
Typical applications are:
•
Building materials
—
Lime, extruded polystyrene foam (XPS), molding sand, etc.
•
Food and beverage
—
Milk powder, flour, salt, etc.
•
Plastics
—
Plastic granulates, etc.
October 2020
Quick Start Guide
Quick Start Guide
5
