Emerson 2120 Quick Start Manual page 2

Quick Start Guide
NOTICE
This guide provides basic guidelines for Rosemount 2120 Level Switch. It does not provide instructions for
configuration, diagnostics, maintenance, service, troubleshooting, or intrinsically safe (I.S.) installations.
Refer to the Rosemount 2120
available electronically on Emerson.com/Rosemount.
Failure to follow these installation guidelines could result in death or serious injury.

The Rosemount 2120 Level Switch ("level switch") must be installed, connected, commissioned,
operated, and maintained by suitably qualified personnel only, observing any national and local
requirements that may apply.

Ensure the wiring is suitable for the electrical current and the insulation is suitable for the voltage,
temperature, and environment.

Use equipment only as specified. Failure to do so may impair the protection provided by the equipment.

Any substitution of non-recognized parts may jeopardize safety and is under no circumstances allowed.

The weight of the level switch with a heavy flange and extended fork length may exceed 37 lb (18 kg).
A risk assessment is required to be done before carrying, lifting, and installing the level switch.
Explosions could result in death or serious injury.

Installation of the level switch in a hazardous environment must be in accordance with the appropriate
local, national, and international standards, codes, and practices. Please review
any restrictions associated with a safe installation.

Verify that the operating atmosphere of the level switch is consistent with the appropriate hazardous
locations certifications.
External surface may be hot.

Care must be taken to avoid possible burns.
Process leaks could result in death or serious injury.

Install and tighten process connectors before applying pressure.

Do not attempt to loosen or remove process connectors while the level switch is in service.
Electrical shock could cause death or serious injury.

If the liquid level switch is installed in a high voltage environment and a fault condition or installation error
occurs, high voltage may be present on leads and terminals.

Use extreme caution when making contact with the leads and terminals.

Make sure that power to the level switch is off while making connections.
2
Reference Manual for more instruction. The manual and this guide are also
December 2016
Product Certifications for