Rosemount 2130 Operating Manual

Rosemount™ 2130 Level Switch

Vibrating Fork

Reference Manual

00809-0100-4130, Rev DB

March 2017

Reference Manual

NOTICE

00809-0100-4130, Rev DB

Rosemount™ 2130 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.
Americas 1 800 999 9307
Europe [phone]
Middle east [phone]
Asia [phone]

North American Response Center

Equipment service needs.
1-800-654-7768 (24 hours — includes Canada)
Outside of these areas, contact your local Emerson

™

representative.

Title Page

March 2017

Title Page

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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Title Page

March 2017

Reference Manual

00809-0100-4130, Rev DB

Failure to follow these installation guidelines could result in death or serious injury.

 Make sure only qualified personnel perform the installation.
 Use the Rosemount 2130 Level Switch (“level switch”) only as specified in this manual.

Failure to do so may impair the protection provided by the equipment.

 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.

 Do not remove the level switch cover in explosive atmospheres when the circuit is alive.
 The level switch cover must be fully engaged and locked to meet explosion-proof

requirements.

 Verify the operating environment of the level switch is consistent with the appropriate

hazardous locations certifications.

 Review Appendix B: Product Certifications for special conditions and safety instructions

associated with a hazardous location installation.

Electrical shock can result in death or serious injury.

 If the level switch is installed in a high-voltage environment and a fault or installation error

occurs, high voltage may be present on the sensor leads and terminals.

 Use extreme caution when making contact with the leads and terminals.
 Make sure the main power to the level switch is off and the lines to any other external power

source are disconnected or not powered while wiring the level switch.

 Ensure the wiring is suitable for the electrical current and the insulation is suitable for the

voltage, temperature, and environment.

External surfaces may be hot.

 Care must be taken to avoid possible burns. The flange and process seal may also be hot at

high process temperatures. Allow to cool before servicing.

Process leaks could result in death or serious injury.

 Install and tighten process connection before applying pressure.
 Do not attempt to loosen the process connection while the level switch is in service.
 Make sure that the level switch is handled carefully. If the process seal is damaged, gas might

escape from the tank.

Any substitution of non-recognized parts may jeopardize safety and is under no
circumstances allowed.

 Unauthorized changes to the product are strictly prohibited as they may unintentionally and

unpredictably alter performance and jeopardize safety.

 Unauthorized changes that interfere with the integrity of the welds or flanges, such as

making additional perforations, compromise product integrity and safety. Equipment
ratings and certifications are no longer valid on any products that have been damaged or
modified without the prior written permission of Emerson. Any continued use of product
that has been damaged or modified without the written authorization is at the customer’s
sole risk and expense.

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Reference Manual

00809-0100-4130, Rev DB

Contents

1Section 1: Introduction

Contents

March 2017

1.1 Using this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.1 The sections in this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.2 Definitions and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Models covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Level switch overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3.1 Features list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3.2 Measurement principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3.3 Short fork technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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 Safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2.2 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2.3 Application considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.4 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2.5 Installation recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.6 Installation examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.3 Installation procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.3.1 Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.3.2 Correct fork alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.3.3 Tightening the threaded level switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.3.4 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.4 Setting the mode switch and switching time delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.5 LED indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.6 Operating mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.7 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.7.1 Direct load switching electronics cassette. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Contents

2.7.2 PNP/PLC electronics cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.7.3 DPCO relay electronics cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2.7.4 Fault and alarm relays (2 x SPCO) electronics cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.7.5 NAMUR electronics cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.7.6 8/16 mA electronics cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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Reference Manual

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2.7.7 Fault condition detected (self-check mode only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3Section 3: Service and Troubleshooting

3.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.2 Magnetic test point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.3 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.4 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.5 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.7 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.8 Replacement and calibration of electronic cassettes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.8.1 Replacement sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.8.2 Calibration sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4Section A: Reference Data

A.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A.1.2 Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A.1.3 Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A.1.4 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

A.1.5 Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

A.2 Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

A.3 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

A.3.1 Spare parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

5Section B: Product Certifications

B.1 European directive information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.2 NAMUR approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.3 Overfill approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.4 Marine approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.5 Drinking water approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.6 Ordinary location certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.7 Safety Integrity Level (SIL) certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

B.8 Canadian Registration Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

B.9 Hazardous locations certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

B.9.1 American and Canadian approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

B.9.2 European approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

B.9.3 International approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

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Contents

Reference Manual

00809-0100-4130, Rev DB

Section 1 Introduction

1.1 Using this manual

1.1.1 The sections in this manual

Introduction

March 2017

The sections in this manual provide information on installing, operating, and maintaining the
Rosemount

 Section 2: Installation contains mechanical and electrical installation instructions.
 Section 3: Service and Troubleshooting covers basic maintenance guidelines and troubleshooting

techniques for the most common operating problems.

 Section A: Reference Data supplies reference and specification data as well as ordering information.
 Section B: Product Certificationscontains safety approval information and approval drawings.

™

2130 Level Switch – Vibrating Fork. The sections are organized as follows:

1.1.2 Definitions and abbreviations

The following definitions are used in this manual:

(1)

Dry

(1)

Wet

Fault The fork frequency is outside the normal frequency band

Normal
mode

Enhanced
mode

1. The switching point does vary with different liquid densities (see Figure 2-3 on page 10).

The Rosemount 2130 fork (sensor) is submerged to a depth of less than 0.5 in. (13 mm)

The Rosemount2130 fork (sensor) is submerged to a depth of greater than 0.5 in. (13 mm)

The operating mode in which the Rosemount 2130 considers a 0 Hz fork frequency to
represent a wet condition (and not a fault)

The operating mode in which the Rosemount 2130 considers a 0 Hz fork frequency to
represent a fault condition

1.2 Models covered

All models of the Rosemount 2130 Level Switch -- Vibrating Fork are covered in this manual.

1.3 Level switch overview

1.3.1 Features list

 The Rosemount 2130, version with 2130***E in the model number, is designed for operating in high

process temperatures of –94 to 500 °F (–70 to 260 °C)

 Rosemount 2130, version with 2130***M in the model number, is designed for operating in

mid-range process temperatures of –40 to 356 °F (–40 to 180 °C)

 Based on vibrating short fork technology, the level switch is suitable for many liquid applications
 Virtually unaffected by flow, bubbles, turbulence, foam, vibration, solids content, coating products,

liquid properties, and product variations

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1

Introduction

B

H

F

I

G

C, D, E

A

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 Electronic self-checking and condition monitoring.

A ‘heartbeat’ LED indicates its operating state.

The LED also flashes when the switch output is ‘off’ and is constantly lit when 'on'

 ‘Fast drip’ fork design gives quicker response time, especially with viscous liquids. Rapid wet-to-dry and

dry-to-wet time setting for highly responsive switching

 Adjustable switching delay prevents false switching in turbulent or splashing applications
 Magnetic test-point for easy functional test
 No moving parts or crevices for virtually no maintenance
 No need for calibration and requires minimum installation procedures
 Easy terminal access and electrical protections (see “Electrical” on page 41)
 Short fork length with extensions up to 157.5 in. (4 m)
 General area, explosion-proof/flameproof and intrinsically safe options

 SIL 2 suitable (see “Ordering information” on page 46)

This combination of features makes the Rosemount 2130 Level Switch an ideal choice for a wide variety
of challenging applications in the chemical, power generation, and oil and gas industries.

See Figure 1-2 on page 3 for application examples.

Figure 1-1. Rosemount 2130 Features

A. Electronics cassettes: Direct Load, DPCO Relay, Fault + Alarm (2 x SPCO) Relays, PLC/PNP, NAMUR, or 8/16 mA

®

B. NEMA
C. Short fork length with extensions up to 157.5 in. (4 m)
D. Wetted material in 316/316L stainless steel, solid Alloy C and Alloy C-276,

E. ‘Fast drip’ fork design
F. Threaded, flanged, or Tri Clamp connections
G. Thermal tube in 316/316L stainless steel (2130***E version only)
H. Two cable/conduit entries
I. Magnetic test point

Type 4X (IP66/67) housings in aluminum or 316 stainless steel

or ECTFE co-polymer coated 316/316L stainless steel

2

Introduction

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Figure 1-2. Rosemount 2130 Application Examples

Introduction

March 2017

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 2130 is robust and operates continuously across the process temperature
range of –94 to 500 °F (–70 to 260 °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 indep endent high level alarm
switch as a backup to an installed level device in case of primary failure.

Pump control (limit detection)

Batch processing tanks often contain stirrers and agitators to ensure mixing and product ‘fluidity’.
The standard user selectable time delay, from 0.3 to 30 seconds, virtually eliminates the risk of false

switching from splashing.

Pump protection or empty pipe detection

With the fork projecting only 2 in. (50 mm) (dependent on connection type), the Rosemount 2130 can
be installed in small diameter pipes. Short forks mean minimum intrusion on the wetside and allow for
simple, low cost installation at any angle into pipes or tanks. By selecting the option of direct load
switching or relay electronics, the Rosemount 2130 is ideal for reliable pump control and can be used to
protect against pumps running dry.

High temperature applications

The 2130***E version is designed for high temperatures and is suitable for continuous operation within
the process temperature range of –94 to 500 °F (–70 to 260 °C).

Wireless applications

The advent of wireless communications allows process plant managers to save up to 90% on installation
cost compared with wired technologies. More data can be collected at central locations than has ever
been possible before. The Rosemount 2130 can be used with a Rosemount 702 Wireless Discrete
Transmitter to enable these benefits for your applications.

Hygienic applications

With the highly polished forks option providing a surface finish (Ra) better than 0.4 μm, the Rosemount
2130 meets the most stringent hygienic requirements used in food and beverage, and pharmaceutical
applications. It is robust enough to easily withstand CIP (Clean In Place) and SIP (Steam In Place) cleaning
routines.

Introduction

3

Introduction

March 2017

1.3.2 Measurement principle

The level switch is designed using 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 level switch 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 (~1400 Hz) of the fork avoids interference from plant vibration that may cause
false switching. This allows for minimum intrusion into the tank or pipe through the use of a short fork.
Using short fork technology, the Rosemount 2130 Level Switch can be used in almost all liquid
applications. Extensive research has maximized the operational effectiveness of the fork design, making
it suitable for most liquids including coating liquids, aerated liquids, and slurries.

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00809-0100-4130, Rev DB

1.3.4 Special features

Instrument health monitor and continuous self-check

The Rosemount 2130 Level Switch continuously performs instrument health diagnostics to self-check
the condition of the fork and sensor. These diagnostics can detect damage to the forks including
corrosion, internal or external damage to the forks, and breakages to the internal wiring. Any of these
conditions will trigger the 'heartbeat' LED to pulse intermittently, followed by safe handling of the
electrical load.

Heartbeat LED

The Rosemount 2130 has a ‘heartbeat’ LED that indicates its operating state. The LED flashes when the
switch output is ‘off’ and is constantly lit when 'on'.

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 2130 to react quickly and with greater sensitivity to
density variations.

Mode switch and adjustable time delay

A mode switch allows the Rosemount 2130 to be set to switch from wet to dry (typically for low level
alarm) or from dry to wet (typically for high level alarm). There is also a user-selectable time delay (0.3, 1,
3, 10, or 30 s) to virtually eliminate the risk of false switching in turbulent or splashing applications.

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 2130 and the system connected to it. Holding a magnet to the test-point causes the
output to change state.

Electrical hook-up

The terminal blocks extend above the housing and give easy terminal access. Electrical protections
make electrical hook-up safe and easy (see “Electrical” on page 41).

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Introduction

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1.4 Product recycling and disposal

Recycling of equipment and packaging should be taken into consideration. The product and packaging
should be disposed of in accordance with local and national legislation.

Introduction

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Introduction

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6

Introduction

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Section 2 Installation

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7

Considerations before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16

Setting the mode switch and switching time delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20

LED indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21

Operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 22

Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23

2.1 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.

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March 2017

Failure to follow these installation guidelines could result in death or serious injury.

 Make sure only qualified personnel perform the installation.
 Use the Rosemount 2130 Level Switch (“level switch”) only as specified in this manual.

Failure to do so may impair the protection provided by the equipment.

 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.

 Do not remove the level switch cover in explosive atmospheres when the circuit is alive.
 The level switch cover must be fully engaged and locked to meet explosion-proof requirements.
 Verify the operating environment of the level switch is consistent with the appropriate hazardous

locations certifications.

 Review Appendix B: Product Certifications for special conditions and safety instructions

associated with a hazardous location installation.

Electrical shock can result in death or serious injury.

 If the level switch is installed in a high-voltage environment and a fault or installation error occurs,

high voltage may be present on the sensor leads and terminals.

 Use extreme caution when making contact with the leads and terminals.
 Make sure the main power to the level switch is off and the lines to any other external power

source are disconnected or not powered while wiring the level switch.

 Ensure the wiring is suitable for the electrical current and the insulation is suitable for the voltage,

temperature, and environment.

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March 2017

External surfaces may be hot.

 Care must be taken to avoid possible burns. The flange and process seal may also be hot at high

process temperatures. Allow to cool before servicing.

Process leaks could result in death or serious injury.

 Install and tighten process connection before applying pressure.
 Do not attempt to loosen the process connection while the level switch is in service.
 Make sure that the level switch is handled carefully. If the process seal is damaged, gas might escape

from the tank.

2.2 Considerations before installation

Important
Emerson is not in a position to evaluate or guarantee the compatibility of the process fluid or other
process parameters with the product, options, configuration or materials of construction selected.

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00809-0100-4130, Rev DB

2.2.1 Safety considerations

Safety instructions and control drawings specific to hazardous area installations are in

Appendix B: Product Certifications, and there are safety instructions in the Rosemount 2120 Quick Start
Guide (see Emerson.com/Rosemount. The safety instructions also include general safety information.

2.2.2 Environmental considerations

The Rosemount 2130 Level Switch (“level switch”) is available as Intrinsically Safe (IS) or explo­sion-proof/flameproof versions for hazardous area installations. There are also ordinary location versions
for unclassified, safe areas. Approvals are listed in Appendix B: Product Certifications.

This level switch is designed for detecting liquids in open or closed tank, and pipe installations.
It is weatherproof and protected against the ingress of dust, but must be protected from flooding.
Avoid installing the level switch near heat sources.

Figure 2-1. Environmental Considerations

OKOK

8

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OK

00809-0100-4130, Rev DB

2.2.3 Application considerations

For most liquids, including coating, aerated liquids and slurries, the function is virtually unaffected by
flow, turbulence, bubbles, foam, vibration, solid particles, build-up, or properties of the liquid.

The 2130***E version of the level switch operates in high process temperatures of –94 to 500 °F
(–70 to 260 °C).

The 2130***M version of the level switch operates in mid-range process temperatures of –40 to 356 °F
(–40 to 180 °C).

The level switch can be mounted in an open or closed tank, or pipe. There is a wide range of threaded,
flanged, and Tri Clamp process connections.

Important
There should be no risk of ‘bridging’ the forks (see Figure 2-2). Examples of media that can create
‘bridging’ of forks are dense paper slurries and bitumen.

Figure 2-2. Avoid Product Build-up

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March 2017

Installation

Application guidelines

 Ensure the process is operating within the level switch operating temperature and pressure ranges

(see “Specifications” on page 39).

 Ensure the liquid viscosity is within the recommended viscosity range

(see “Specifications” on page 39).

 Check that the liquid density is higher than 37.5 lb/ft

when ordered with the Low Density Range option (see “Specifications” on page 39).

 Liquid density affects the switching point e.g. dry-to-wet (see Figure 2-3 on page 10)
 Check for risk of build-up on the forks.

Avoid situations where drying and coating products may create excessive build-up. Problems may
occur if the product coats and then dries, causing caking.

 Check the solids content in the liquid.

3

(600 kg/m3), or above 31.2 lb/ft3 (500 kg/m3)

9

Installation

SP

HYSP

0.1 in.

(2.5 mm)

0.5 in.

(13 mm)

0.5 in.

(13 mm)

March 2017

Reference Manual

00809-0100-4130, Rev DB

As a guideline, the maximum solid particle diameter in the liquid is 0.2 in. (5 mm).
Extra consideration is needed when dealing with particles bigger than 0.2 in. (5 mm).
Consult the factory for advice.

 In almost all cases, the level switch is insensitive to foams (i.e. does not see the foam).

However, on rare occasions, some very dense foams may be seen as liquid. Known examples of this are
found in ice-cream and orange juice manufacturing.

Figure 2-3. Switching Points

10

SP. Switchpoint (H20)
HY. Switching Hysteresis

Note

When mounted vertically, a low density media has a switching point closer to the process connection.
A high density media has a switching point closer to fork tip.

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00809-0100-4130, Rev DB

2.2.4 Installation considerations

For dimensional drawings, see “Dimensional drawings” on page 42.

Device identification

To identify the Rosemount 2130 Level Switch version, look at the labels on the housing and on the
electronics cassette inside the housing. See “Product Certifications” on page 51 for approval
information.

Allow adequate space outside tank or pipe

Mount the level switch so that it is removable. Clearance of 1.2 in. (30 mm) is required for cover removal.
Ensure there is sufficient room for electrical connections.

The housing cannot be rotated. Ensure there is sufficient room for electrical connections.

Fit the cover correctly

Ensure that the housing O-ring is sitting evenly and then tighten the housing cover to form a good seal.
Always use Emerson O-rings.

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March 2017

Grounding

Always ground the housing in accordance with national and local electrical codes.

The most effective grounding method for the housing is a direct connection to earth ground with
minimal impedance. Housings with NPT conduit entries do not have an earth ground point and must use
the fork earth.

Do not modify the level switch

Do not change the level switch fork in any way (Figure 2-4).

Figure 2-4. Do Not Modify the Rosemount 2130

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Installation

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March 2017

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How to handle the level switch

Handle the level switch with great care (Figure 2-5).

The weight of a 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.

Use both hands to carry the high temperature versions (2130***E) and extended length versions
(2130***M) of the level switch. Do not hold using the forks.

For hygienic applications, the level switch must be hygienically cleaned before installation and handled in
strict accordance with hygienic standards.

Figure 2-5. Handling the Rosemount 2130

2.2.5 Installation recommendations

 Test the system by using the magnetic test-point (see “Magnetic test point” on page 32).
 Avoid installing near to liquid entering the tank at the fill point.
 Avoid heavy splashing on the forks. Increasing the time delay reduces accidental switching.
 Ensure that the forks do not come into contact with the tank wall, any internal fittings, or obstructions.
 Allow for a sufficient distance between product build-up and fork (see Figure 2-2 on page 9).
 Ensure the installation does not create tank crevices around the forks where liquid may collect.

This can happen with high viscosity and high density liquids.

 Extra consideration is needed if the plant vibration is close to the 1400 Hz operating frequency

of the level switch.

 Supporting the extended fork avoids long fork length vibration

(see Figure 2-6 on page 13 or Figure 2-7 on page 14, depending on installation).

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3.28 ft.
(1.0 m)

3.28 ft.
(1.0 m)

Maximum

3.28 ft.
(1.0 m)

3.28 ft

(1.0 m)

3.28 ft

(1.0 m)

Maximum

3.28 ft.
(1.0 m)

00809-0100-4130, Rev DB

Figure 2-6. Required Supports for Extended Fork (Standard)

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March 2017

OK

OK

OK

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OK

13

Installation

2.3 ft.

(0.7 m)

0.65 ft.
(0.2 m)

Maximum

1.3 ft.

(0.4 m)

2.3 ft.

(0.7 m)

2.3 ft.

(0.7 m)

Maximum

1.3 ft.

(0.4 m)

0.65 ft.

(0.2 m)

2.3 ft.

(0.7 m)

2.3 ft.

(0.7 m)

2.3 ft.

(0.7 m)

March 2017

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00809-0100-4130, Rev DB

Figure 2-7. Required Supports for Extended Fork (Marine GL Approval)

OK

OK

OK

14

OK

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A

B

A

B

B

B

B

A

A

A

A

B

B

A

00809-0100-4130, Rev DB

2.2.6 Installation examples

Figure 2-8. High and Low Level Alarms

A. Dry
B. Wet

Figure 2-9. Pump Control or Overfill Protection

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A. Dry
B. Wet

Figure 2-10. Pump or Empty Pipe Protection

A. Dry
B. Wet

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Installation

A

C

B

D

E

F

March 2017

2.3 Installation procedures

2.3.1 Mechanical

Sealing

Figure 2-11. Sealing

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00809-0100-4130, Rev DB

A. PTFE
B. NPT or BSPT (R) thread
C. Gasket
D. BSPP (G) thread
E. Tri Clamp
F. The Tri Clamp seal is supplied as an as accessory kit (see “Spare parts and accessories” on page 49)

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A

B

C

OK

00809-0100-4130, Rev DB

2.3.2 Correct fork alignment

Ensure the fork is correctly aligned by using the notches and grooves as indicated in Figure 2-12.

Figure 2-12. Correct Fork Alignment

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A. Alignment groove on standard length Rosemount 2130
B. Alignment notch on flanged Rosemount 2130
C. Alignment notch on extended length Rosemount 2130

Pipe installation

Figure 2-13. Pipe Installation

Note

The housing/enclosure cannot be rotated.

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