Emerson Rosemount 2110 User manual

Reference Manual
00809-0100-4029, Rev CA
March 2018
Rosemount™2110 Level Switch
Vibrating Fork

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Reference Manual
00809-0100-4029, Rev CA
Title Page
March 2018
Title Page
Rosemount™2110 Level Switch
Vibrating Fork
Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure you thoroughly understand the contents before
installing, using, or maintaining this product.
For technical assistance, contacts are listed below:
Customer Central
Technical support, quoting, and order-related questions.
United States - 1-800-999-9307 (7:00 am to 7:00 pm CST)
Asia Pacific- 65 777 8211
Europe/ Middle East/ Africa - 49 (8153) 9390
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours—includes Canada)
Outside of these areas, contact your local Emerson™representative.
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.

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Contents
March 2018
Contents
1Section 1: Introduction
1.1 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Manual overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Introduction to the Rosemount™2110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.1 Features list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.2 Measurement principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.3 Short fork technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.4 Special features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Product recycling and disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2Section 2: Installation
2.1 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Considerations before installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.1 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.2 Application considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.3 Installation considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.3 Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.3.1 Process connection seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.3.2 Correct fork alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.3.3 Mounting the threaded versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.3.4 Mounting the Tri Clamp versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
2.4 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.4.1 Prepare the electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.4.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
2.5 LED Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3Section 3: Troubleshooting
3.1 Magnetic test point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
3.2 Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
3.3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
3.4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
3.5 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
3.6 Service support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Contents

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AAppendix A: Reference Data
A.1 Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
A.2 Ordering Information, Specifications, and Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Reference Manual
00809-0100-4029, Rev CA
Introduction
March 2018
1
Introduction
Section 1 Introduction
1.1 Safety messages
Procedures and instructions in this manual may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
caution symbol ( ). The external hot surface symbol ( ) is used when a surface is hot and care must be
taken to avoid possible burns. If there is a risk of an electrical shock, the ( ) symbol is used. Refer to the
safety messages listed at the beginning of each section before performing an operation preceded by this
symbol.
Failure to follow these installation guidelines could result in death or serious injury.
Protection afforded by compliance to EN61010-1 may be impaired if the equipment is not
used as specified.
The Rosemount™2110 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 the equipment only as specified in this manual. 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.
Review the product approvals for any restrictions associated with an installation.
See “Reference Data” on page 29 for where to find the latest information.
Verify that the operating environment of the level switch is not a hazardous area location.
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 Rosemount 2110 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 Rosemount 2110 is off while making connections.

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Introduction
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Introduction
1.2 Manual overview
This manual provides information on installing, operating, and maintaining all versions of the
Rosemount 2110 Vibrating Fork Liquid Level Switch (“level switch”).
Section 2: Installation provides instruction on mechanical and electrical installation procedures.
Section 3: Troubleshooting contains instructions about using the magnetic test point, as well as
inspection, basic maintenance, and troubleshooting information.
Appendix A: Reference Data contains instructions on how to find the latest product certifications,
specifications, dimension drawings, and ordering information on the Emerson.com/Rosemount site.
Note
Refer to the Rosemount 2110 Quick Start Guide for instruction on hygienic installation of a level switch
with a 51 mm Tri Clamp fitting.
1.3 Introduction to the Rosemount 2110
The Rosemount 2110 is a liquid point level switch based on the vibrating short fork technology.
It is a compact switch with a rugged stainless steel body and forks for use in a wide range of liquid
applications. For most liquids, including coating and aerated liquids and slurries, the function is virtually
unaffected by flow, turbulence, bubbles, foam, vibration, or changing liquid properties.
1.3.1 Features list
Features include:
Stainless steel housing and plug/socket connection for fast- fit, high-volume users.
Compact and lightweight design for side, top, or bottom mounting.
The industry standard DIN 43650 plug/socket is used for a fast connection. The polarity insensitivity
and short circuit protection make electrical hook-up safe and easy.
Designed for operation in temperatures from –40 to 302 °F (–40 to 150 °C).
Economical 3/4 - or 1-in. threaded process connections for mounting in pipes or tanks, or Tri Clamp
mounting for food industry.
Direct load switching (suits all supplies) or PNP output for direct interface to PLCs.
“Fast drip” fork design gives quick response time.
‘Heartbeat’ LED gives an instant visual indication that the level switch is operational.
Optimized fork shape for hand polishing to meet hygienic requirements.
No moving parts or crevices (means virtually no maintenance).
Magnetic test point for easy functional test.
This combination of features makes the Rosemount 2110 an ideal choice for a wide variety of
applications. The level switch is for use in non-hazardous (safe) area installations only.
See Figure 1-1 on page 3 for application examples.

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Introduction
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Introduction
Figure 1-1. Rosemount 2110 Features
A. Industry standard DIN 43650 plug/socket
B. Stainless steel housing with magnetic test point
C. Hexagonal nut for tightening a threaded process connection, and for fork orientation
D. Threaded and Tri Clamp process connection options
E. ‘Fast drip’ fork design
F. Visible ‘heartbeat’ LED
1.3.2 Measurement principle
The Rosemount 2110 is designed to use the principle of a tuning fork. A piezo-electric crystal oscillates
the forks at their natural frequency. Changes to this frequency are continuously monitored. The
frequency of the vibrating fork sensor changes depending on the medium in which it is immersed. The
denser the liquid, the lower the frequency.
When used as a low level alarm, the liquid in the tank or pipe drains down past the fork, causing a change
of natural frequency that is detected by the electronics and switches the output state.
When the Rosemount 2110 is used as a high level alarm, the liquid rises in the tank or pipe making
contact with the fork and causing the output state to switch.
1.3.3 Short fork technology
The natural frequency (~1300Hz) of the fork avoids interference from plant vibration which may cause
false switching. It also gives short fork length for minimal intrusion into vessel and pipe. By using Short
Fork Technology and through extensive research, Emerson™has maximized the design and operational
effectiveness of the Rosemount 2110 making it suitable for practically all liquids, including coating
liquids, aerated liquids, and slurries.
A
B
C
D
E
F

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Introduction
1.3.4 Special features
Fork design
The “fast drip” fork design draws liquid away from the fork tips when mounted horizontally, and together
with a short switching delay, allows the Rosemount 2110 to react quickly and with greater sensitivity to
density variations.
Heartbeat LED
The Rosemount 2110 has a ‘heartbeat’ LED indicating it is operating, and can be seen at all times.
The LED flashes when the switch output is ‘off’ and is constantly lit when 'on'.
Magnetic test point
A magnetic test-point is located on the side of the housing, allowing the user to perform a functional test
of the Rosemount 2110 and the system connected to it. Holding a magnet to the test-point causes the
output to change state.
Figure 1-2. Rosemount 2110 Application Examples
Overfill protection
Spillage caused by overfilling can be hazardous to people and the environment, resulting in
lost product and potentially high clean up costs.
High and low level alarm
Maximum and minimum level detection in tanks containing different types of liquids are
ideal applications. The Rosemount 2110 operates continuously across the process
temperature range of –40 to 302 °F (–40 to 150 °C) and operating pressures of up to 1450
psig (100 barg), making it perfect for use as a high or low level alarm. It is common practice
to have an independent high level alarm switch as a backup to an installed level device in
case of primary failure.