Rosemount 2120 Specifications

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Page 1

Rosemount™ 2120 Level Switch

Vibrating Fork

Product Data Sheet

December 2017

00813-0100-4030, Rev HC

 Designed for operation in process

temperatures of –40 to 302 °F (–40 to 150 °C)

 Electronic self-checking and condition

monitoring

 Increased safety, SIL2-certified to IEC 61508

as required by IEC 61511 and SIL3 capable

 Adjustable switching delay for turbulent or

splashing applications

 “Fast drip” fork design gives a quicker response

time, especially with viscous liquids

 General area, explosion-proof/flameproof, and

intrinsically safe options

 Hygienically certified to 3-A

and complies with FDA and ASME-BPE

and EHEDG,

Page 2

Rosemount 2120 Level Switch

‘Fast drip’ forks

There is a variety of plug-in electronics options, with

each having an adjustable mode and switching delay

(see “Electrical connections” on page 12)

The Quick Release kit is a new optional set of accessories.

It makes inspection, proof-testing, and servicing easier than ever

(see Table 2 on page 9 for accessories)

Overview of the Rosemount 2120 Level Switch

Measurement principle

The Rosemount 2120 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 Rosemount 2120 is used as a high level alarm, the liquid rises in the tank or pipe, making contact with the fork which then causes the output state to switch.

Key features and benefits

December 2017

 Function virtually unaffected by flow, bubbles, turbulence, foam,

vibration, solids content, coating products, liquid properties, and product variations

 The Rosemount 2120 is designed for operation in process

temperatures from –40 to 302 °F (–40 to 150 °C)

 A ‘heartbeat’ LED indicates its operating state. The LED also flashes

when the switch output is ‘off’ and is constantly lit when 'on'

 Adjustable switching delay prevents false switching in turbulent or

splashing applications

 ‘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

 Fork shape is optimized for polishing to meet hygienic

requirements. Mechanical- and electro-polishing options.

 Magnetic test point makes functional test easy

 No moving parts or crevices for virtually no maintenance

Overview of the Rosemount 2120 Level Switch . . page 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 10

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . page 4 Product Certifications . . . . . . . . . . . . . . . . . . . . .page 14

Spare Parts and Accessories . . . . . . . . . . . . . . . . . . . page 9 Dimensional Drawings . . . . . . . . . . . . . . . . . . . .page 16

2 Emerson.com/Rosemount

Page 3

December 2017

High and low level alarm

High-temperature applications

Pump control / limit detection

Wireless applications using a

Rosemount 702 Discrete Transmitter

In tank gauging systems, a Rosemount 2120 high level alarm switch can be used as an alternative to a radar level gauge. See the Rosemount Tank Gauging Product Data

Sheet for additional information.

Point Level Alarm

Rosemount

2120

Rosemount

5900S

Level

High level alarm: two separate and configurable relay outputs

Fit and forget

 Once installed, the Rosemount 2120 is ready to go.

It needs no calibration and requires minimum installation

 The ‘heartbeat’ LED gives an instant visual indication that the unit is operational

 Functional testing of the instrument and system is easy with a magnetic test point

 You can install, and forget it

Superior performance

 The Rosemount 2120 is a popular choice for high and low level alarm and pump

control duties for its simplicity, ease of use, and reliability

 Functionality is virtually unaffected by flow, turbulence, bubbles, foam, or vibration

 The ‘fast drip’ design allows the liquid to be quickly drawn away from the fork tip

when mounted horizontally, making the Rosemount 2120 quicker and more responsive in high density or viscous liquid applications

Rosemount 2120 Level Switch

 With a user-selectable time delay feature, the risk of false switching is minimized in

turbulent or splashing applications

Applications

 Overfill protection

 High and low point level alarms

 Pump control or limit detection

 Run dry or pump protection

 Hygienic applications

 High-temperature applications

 Wireless applications

r a d

R k n

T t n

o m e s

o R

f f

M R E T

O i H

N I

A G

o L

USB

RS-232

Ext. pwr

0 8 1

2 M B

3Emerson.com/Rosemount

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Rosemount 2120 Level Switch

December 2017

Ordering Information

Specification and selection of product materials, options, or components must be made by the purchaser of the equipment. See page 10 for more information on Material Selection.

Table 1. Rosemount 2120 Ordering Information

The starred options (★) represent the most common options and should be selected for best delivery. The non-starred offerings are subject to additional delivery lead time.

Model Product description

2120 Vibrating Fork Liquid Level Switch / –40…302 °F (–40...150 °C)

Materials of construction: process connection/fork

D 316/316L Stainless Steel (1.4401/1.4404) dual certified

(1)

C Alloy C (UNS N10002), Alloy C-276 (UNS N10276), Solid

ECTFE copolymer, coated 316/316L SST (1.4401/1.4404)

Process connection size / type

1A 1-in. BSPT (R) Thread

1B 1-in. BSPP (G) Thread

1D 1-in. NPT Thread

1P 1-in. BSPP (G), O-ring

5R 11/2-in. (38 mm) Tri Clamp

2R 2-in. (51 mm) Tri Clamp

1G 1-in. ASME B16.5 Class 150 Raised Face (RF) Flange

1H 1-in. ASME B16.5 Class 300 Raised Face (RF) Flange

1J 1-in. ASME B16.5 Class 600 Raised Face (RF) Flange

5G 11/2-in. ASME B16.5 Class 150 Raised Face (RF) Flange

5H 11/2-in. ASME B16.5 Class 300 Raised Face (RF) Flange

2G 2-in. ASME B16.5 Class 150 Raised Face (RF) Flange

2H 2-in. ASME B16.5 Class 300 Raised Face (RF) Flange

3G 3-in. ASME B16.5 Class 150 Raised Face (RF) Flange

3H 3-in. ASME B16.5 Class 300 Raised Face (RF) Flange

4G 4-in. ASME B16.5 Class 150 Raised Face (RF) Flange

4H 4-in. ASME B16.5 Class 300 Raised Face (RF) Flange

1K DN25, EN1092 PN 10/16 Flange

1L DN25, EN1092 PN 25/40 Flange

1M DN25, EN1092 PN 63 Flange

1N DN25, EN1092 PN 100 Flange

5K DN40, EN1092 PN 10/16 Flange

5L DN40, EN1092 PN 25/40 Flange

/4-in. BSPT (R) Thread

/4-in. BSPP (G) Thread

/4-in. NPT Thread

★

Emerson.com/Rosemount

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December 2017

Rosemount 2120 Level Switch

Table 1. Rosemount 2120 Ordering Information

The starred options (★) represent the most common options and should be selected for best delivery. The non-starred offerings are subject to additional delivery lead time.

2K DN50, EN1092 PN 10/16 Flange

2L DN50, EN1092 PN 25/40 Flange

7K DN65, EN1092 PN 10/16 Flange

7L DN65, EN1092 PN 25/40 Flange

3K DN80, EN1092 PN 10/16 Flange

3L DN80, EN1092 PN 25/40 Flange

4K DN100, EN1092 PN 10/16 Flange

4L DN100, EN1092 PN 25/40 Flange

5J 11/2-in. ASME B16.5 Class 600 Raised Face (RF) Flange

2J 2-in. ASME B16.5 Class 600 Raised Face (RF) Flange

3J 3-in. ASME B16.5 Class 600 Raised Face (RF) Flange

4J 4-in. ASME B16.5 Class 600 Raised Face (RF) Flange

5M DN40, EN1092 PN 63 Flange

5N DN40, EN1092 PN 100 Flange

2M DN50, EN1092 PN 63 Flange

2N DN50, EN1092 PN 100 Flange

7M DN65, EN1092 PN 63 Flange

7N DN65, EN1092 PN 100 Flange

3M DN80, EN1092 PN 63 Flange

3N DN80, EN1092 PN 100 Flange

4M DN100, EN1092 PN 63 Flange

4N DN100, EN1092 PN 100 Flange

SA 25A, 10K, JIS B2220 Flange

SB 25A, 20K, JIS B2220 Flange

TA 40A, 10K, JIS B2220 Flange

TB 40A, 20K, JIS B2220 Flange

UA 50A, 10K, JIS B2220 Flange

UB 50A, 20K, JIS B2220 Flange

VA 80A, 10K, JIS B2220 Flange

VB 80A, 20K, JIS B2220 Flange

ZA 100A, 10K, JIS B2220 Flange

ZB 100A, 20K, JIS B2220 Flange

(2)

Customer Specific

★

Emerson.com/Rosemount

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Rosemount 2120 Level Switch

December 2017

Table 1. Rosemount 2120 Ordering Information

The starred options (★) represent the most common options and should be selected for best delivery. The non-starred offerings are subject to additional delivery lead time.

Electronic type

Available certifications

T Direct load switching (Mains 2-wire) 20 to 264 Vac 50/60Hz, 20 to 60 Vdc NA, E1, E5, E6, E7, EM, G5, G6

G PNP/PLC (3-wire) 20 to 60 Vdc NA, E1, E5, E6, E7, EM, G5, G6

V Relay DPCO, 20 to 264 Vac 50/60Hz, 20 to 60 Vdc NA, E1, E5, E6, E7, EM, G5, G6

E Relay DPCO, 9...30 Vdc E5 and G5

K NAMUR All

H 8/16 mA All

Surface finish

Available

connections

Available housings

1 Standard surface finish All All

(3)

(4)

Product certifications

Hand polished (Ra < 0.4 μm) Tri Clamp only All

Ra < 0.76 μm, hygienically approved Tri Clamp only A, X

Electro-polished to  0.76 μm, hygienically approved Tri Clamp only A, X

Mechanically-polished to Ra < 0.1 μm, hygienically approved Tri Clamp only A, X

Electro-polished to Ra < 0.38 μm, hygienically approved Tri Clamp only A, X

Electronic

types allowed

(5)

No Hazardous Locations Certifications All except option E All

(6)

FM Ordinary Locations (unclassified, safe area) All Y, T

(7)

CSA Ordinary Locations (unclassified, safe area) All except option E Y, T

Available housings

E1 ATEX Flameproof All except option E X, S

(6)

(7)

FM Explosion-proof All Y, T

CSA Explosion-proof All except option E Y, T

E7 IECEx Explosion-proof All except option E X, S

EM Technical Regulation Customs Union (EAC), Flameproof All except option E X, S

I1 ATEX Intrinsic Safety K, H All

I5 FM Intrinsic Safety K, H All

I6 CSA Intrinsically Safe K, H All

I7 IECEx Intrinsic Safety K, H All

IM Technical Regulation Customs Union (EAC), Intrinsic. Safe K, H All

★

Housing

Available certifications

A Glass Filled Nylon, M20 conduits/cable threads NA, I1, I5, I6, and I7

D Glass Filled Nylon, 1/2-in. ANPT conduits/cable threads NA, I1, I5, I6, and I7

X Aluminum Alloy, M20 conduits/cable threads All except G5, G6, E5, E6

Y Aluminum Alloy, 3/4-in. ANPT conduits/cable threads All except E1, E7, and EM

S Stainless Steel, M20 conduits/cable threads All except G5, G6, E5, E6

T Stainless Steel 3/4-in. ANPT conduits/cable threads All except E1, E7, and EM

Emerson.com/Rosemount

★

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December 2017

Rosemount 2120 Level Switch

Table 1. Rosemount 2120 Ordering Information

The starred options (★) represent the most common options and should be selected for best delivery. The non-starred offerings are subject to additional delivery lead time.

Fork length

Available connection

A Standard length 1.7 in. (44 mm) All except flanged options

(8)

(9)

Standard length flange 4.0 in. (102 mm) All flanged options

Extended, customer specified length in tenths of inches All except 1-in. BSPP O-ring (1P)

Extended, customer specified length in millimeters All except 1-in. BSPP O-ring (1P)

Specific extended fork length

0000 Factory default length (only if Fork Length A or H is selected)

(9)

XXXX

Specific customer specified length in tenths of inches or millimeters (XXX.X inches or XXXX mm)

Typical Model Number: 2120 D 0A K 1 I1 A 0000

Options (include with the selected model number)

Calibration data certification

Q4 Certificate of functional test

Material traceability certification

(8)(10)

Q8 Material traceability certification per EN 10204 3.1

Material certification

(8)(10)

Q15 NACE® MR0175 / ISO 15156

Q25 NACE MR0103

Safety certification

(11)

★

QS Prior-use certificate of FMEDA Data

(12)

Special procedures

Safety certificate to IEC61508

(13)

P1 Hydrostatic testing with certificate

Hygienic certifications

(14)

QA 3-A certificate

QE EHEDG certificate

ASME-BPE statement

(14)

QB ASME-BPE statement

Food Drug Administration statement

(14)

QH FDA statement

Surface finish certification

(14)

Q16 Surface finish certificate

Example of options included with the model number: 2120 D 0A K 1 I1 A 0000 Q8

1. ECTFE copolymer coating is only available for a flanged Rosemount 2120 but excludes 1-in./DN25/25A flanges. Flanges are dual certified 316 and 316L Stainless Steel (1.4401 and 1.4404).

★

Emerson.com/Rosemount

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Rosemount 2120 Level Switch

2. Other process connections available upon request.

3. Hand-polished for hygienic connections to better than 0.4 μm Ra such that there are no pits, folds, crevices o r cracks discernible to the naked eye (i.e. no features larger than 75 micrometers based on resolving 1/60 degree at a distance of 250 mm).

4. Not available for explosion-proof or flameproof product certifications.

5. Includes the Technical Regulation Customs Union (EAC) ordinary location mark.

6. See “Product Certifications” on page 14. E5 includes G5 requirements. G5 is for use in unclassified, safe area locations only.

7. See “Product Certifications” on page 14. E6 includes G6 requirements. G6 is for use in unclassified, safe area locations only.

8. Not available for hand polished wet side.

9. Minimum length available for and for Tri Clamp, it is 4.1 in. (105 mm). Maximum length is 157.5 in. (4000 mm), except for ECTFE copolymer coating and polished process where the maximum length is 59.1 in. (1500 mm) and 39.4 in. (1000 mm) respectively. Examples: Code E1181 is 118.1 inches. Code M3000 is 3000 millimeters.

10. Only available for process-wetted parts.

11. Not available for Direct Load or Relay (option code E) switching electronics.

12. Not available with Relay (option code V) switching electronics.

13. Option limited to units with extended lengths up to 59.1-in. (1500 mm). Option is not available for ECTFE coating.

14. Available only for a Rosemount 2120 with a Tri Clamp fitting, Product Certification code NA, G*, or I*, and Surface Finish code 3, 4, 7, or 8.

/4-in. threaded connection is 3.8 in. (95 mm); for 1-in. threaded, it is 3.7 in. (94 mm); for flanged, it is 3.5 in. (89 mm);

December 2017

Safety Integrity Level (SIL) certification option

 The Rosemount 2120 has been independently certified to IEC 61508 as required by IEC 61511. Certification was conducted by

Exida. If required, add “QT” to the end of the model code. For example, 2120 D 0A K E1 X A0000 QT. (Note that you can have one or more OPTIONS codes at the end).

 Visit the Rosemount 2120 web page for additional information.

Overfill approval option

 The Rosemount 2120 has been TÜV-tested and approved for overfill protection according to the German DIBt/WHG regulations.

This option is not selectable in the ordering information table. If required, add “R2259” to the end of the model code. For example, 2120 D 0A K E1 X A0000 R2259. (Note that you can have one or more OPTIONS codes at the end).

Emerson.com/Rosemount

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December 2017

Rosemount 2120 Level Switch

Spare Parts and Accessories

Table 2. Spare Parts and Accessories

Specification and selection of product materials, options, or components must be made by the purchaser of the equipment. See page 10 for more information on Material Selection.

Spares and accessories

(1)(2)

02100-1000-0001 Seal for 1-in. BSPP (G1A). Material: Non-asbestos BS7531 grade X carbon fiber with rubber binder

02100-1040-0001 Seal for 3/4-in. BSPP (G3/4A). Material: Non-asbestos BS7531 grade X carbon fiber with rubber binder

02100-1010-0001 Adaptor boss 1-in. BSPP to 11/2-in. (38mm) Tri-Clamp. Material: 316 SST fitting. FPM/FKM O-ring

02100-1020-0001

(3)

2-in. (51 mm) Tri Clamp kit (vessel fitting, clamp ring, and seal). Material: 316 SST, NBR Nitrile

02100-1030-0001 Telescopic test magnet

02120-7000-0001

02120-7000-0002

02120-7000-0003

02120-7000-0004

02120-7000-0005

02120-7000-0007

02100-1060-0001

1. Check the Electronic Type and Product Certification sections in Table 1 on page 4 for availability conditions.

2. Intrinsically Safe (IS) approved cassettes can only be replaced with the same type of IS cassette. Non-IS cassette types can be interchanged with other non-IS cassettes, but the new label must be fitted and the original part number transferred to the new label.

3. This is not approved to be used with a 3-A or EHEDG approved products and is not assessed for use with FDA or ASME-BPE compliant products.

4. This replacement cassette is for versions of the Rosemount 2120 shipped since June 2013.

5. The Quick Release kit is a set of accessories requiring a Rosemount 2120 with the 2-in. Tri Clamp option and an existing 2-in. NPT process connection on the vessel. For additional information, see Rosemount 2120 Quick Release kit – Quick Start Guide

(4)

Replacement Cassette: Direct load switching (2 Wire) (Red)

(4)

Replacement Cassette: PNP/PLC, 20 to 60 Vdc (Yellow)

(4)

Replacement Cassette: NAMUR (Light Blue)

(4)

Replacement Cassette: Relay (DPCO), standard version (Green)

(4)

Replacement Cassette: 8/16 mA output (Dark Blue)

(4)

Replacement Cassette: Relay (DPCO), 9...30 Vdc (12 Vdc nominal) version (Green)

(3)(5)

Quick Release kit (contains 2-in. Tri Clamp, seal, and quick release device for 2-in. NPT process connection)

★

Emerson.com/Rosemount

Page 10

Rosemount 2120 Level Switch

December 2017

Specifications

General

Product

Rosemount 2120 Level Switch

Measuring principle

Vibrating fork technology

Applications

Most liquids including coating liquids, aerated liquids, and slurries.

Mechanical

Housing / Enclosure

Table 3. Housing / Enclosure Specifications

Housing code

Housing material

Rotational Yes No No

Housing paint

LED window Nylon PA12 None None

Conduit entry M20

Ingress protection

A D X Y S T

Nylon PA66

30%GF

Not

applicable

ANPT

IP66/67 to

EN60529

/2-in.

Al alloy ASTM

B85 A360.0

Polyurethane

paint

M20

/4-in.

ANPT

IP66/67 to

EN60529,

NEMA

316C12 SST

Not

applicable

M20

IP66/67 to EN60529,

NEMA 4X

/4-in.

ANPT

Dimensional drawings

See “Dimensional Drawings” on page 16.

Material selection

Emerson™ provides a variety of Rosemount product with various product options and configurations including materials of construction that can be expected to perform well in a wide range of applications. The Rosemount product information presented is intended as a guide for the purchaser to make an appropriate selection for the application. It is the purchaser’s sole responsibility to make a careful analysis of all process parameters (such as all chemical components, temperature, pressure, flow rate, abrasives, contaminants, etc.), when specifying product, materials, options and components for the particular application.

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.

Process connection materials

316/316L stainless steel (1.4401/1.4404 dual certified).

Alloy C (UNS N10002) and Alloy C-276 (UNS N10276) – available for flanged, and BSPT and NPT threaded process connections (

ECTFE co-polymer coated 316/316L Stainless Steel (1.4401/1.4404 dual certified) – only available for a flanged Rosemount 2120 but excludes 1-in./DN25/25A flanges.

Gasket material for BS7531 Grade X carbon fiber with rubber binder.

/4- and 1-in. BSPT (R), and 3/4- and 1-in. NPT).

/4- and 1-in. BSPP (G) is non-asbestos

Connections

Threaded, Tri Clamp, and flanged process connections. See “Process connection size / type” on page 4 for a full list.

Extended lengths

The maximum extended length is 157.5 in. (4000 mm) except for ECTFE copolymer coating and mechanically-polishe d process connection options which have a maximum length of 59.1 in. (1500 mm) and 39.4 in. (1000 mm) respectively.

Table 4. Minimum Extended Lengths

Process connection Minimum extended length

/4–in. threaded 3.8 in. (95 mm) 1–in. threaded 3.7 in. (94 mm) Flanged 3.5 in. (89 mm) Tri Clamp 4.1 in. (105 mm)

Transmissible Spongiform Encephalopathy (TSE) Declaration

Emerson™ certifies no process wetted components used in this product contain substances of animal origin. Materials used in the production or processing of wetted components for this product meet the requirements stated in EMA/410/01 Rev. 3 and ISO 22442-1:2015. Wetted components in this product are considered free of TSE.

This declaration is applicable to Tri Clamp connections,

/2-in. (38 mm) or 2-in. (51 mm) sizes when ordered with

i.e. 1 Surface Finish option codes: 3, 4, 7 and 8.

Emerson.com/Rosemount

Page 11

December 2017

1450 (100)

1160 (80)

-14.5 (-1.0)

-40

(-40)

122 (50)

302

(150)

Process Temperature °F (°C)

Process Pressure psig (barg)

0 (0)

32 (0)

176 (80)

140

(60)

-40 (-40)

-40

(-40)

302

(150)

Process Temperature °F (°C)

Ambient Temperature °F (°C)

122 (50)

32 (0)

Rosemount 2120 Level Switch

Functional

Maximum operating altitude

6562 ft. (2000 m)

Maximum operating pressure

The final rating depends on the selected process connection.

 Threaded connection: see Figure 1 for operating pressures

 Tri Clamp connection: 435 psig (30 bar g).

 Flanged connection:

See Figure 1 or Table 5 (whichever gives the lowest pressure).

Figure 1. Process Pressure

Minimum and maximum operating temperatures

See Figure 2 for operating temperatures.

Clamp glands 02120-2000-0001 and 02120-2000-0002 (page 9) limit the maximum temperature to 257 °F (125 °C).

The ambient temperature for a 8/16 mA cassette is limited to 158 °F (70 °C) in dust applications.

Figure 2. Operating Temperatures

Table 5. Maximum Flange Pressure Rating

Standard Class/Rating SST flanges

ASME B16.5 Class 150 275 psig

ASME B16.5 Class 300 720 psig

ASME B16.5 Class 600 1440 psig

EN1092-1 PN 10/16 16 barg

EN1092-1 PN 25/40 40 barg

EN1092-1 PN 63 63 barg

EN1092-1 PN 100 100 barg

JIS B2220 10K 14 barg

JIS B2220 20K 34 barg

1. At 100 °F (38 °C), the rating decreases with an increasing process temperature.

2. At 122 °F (50 °C), the rating decreases with an increasing process temperature.

3. At 248 °F (120 °C), the rating decreases with an increasing process temperature.

Emerson.com/Rosemount

(2)

(3)

(1)

(2)

(1)

Liquid density requirement

Minimum of 37.5 lb/ft3 (600 kg/m3).

Liquid viscosity range

Up to 10000 cP (centiPose).

Solids content and coating

Maximum recommended diameter of solid particles in the liquid is 0.2 in. (5 mm).

For a coating product, avoid bridging of forks.

Switching delay

User selectable 0.3, 1, 3, 10, 30 seconds delay for dry-to-wet and wet-to-dry switching.

Clean-In-Place (CIP) cleaning

Withstands cleaning routines up to 160 °F (71 °C).

Steam-In-Place (SIP) cleaning

Withstands cleaning routines up to 275 °F (135 °C).

NACE

NACE compliance to MR0175 / ISO 15156 or MR0103, depending on the option code selected for the model number.

Page 12

Rosemount 2120 Level Switch

December 2017

Performance

Hysteresis (water)

±0.039-in. (±1 mm) nominal.

Switching point (water)

0.5 in. (13 mm) from tip (vertical) / from edge (horizontal) of fork (this will vary with different liquid densities).

Electrical

Switching mode

User selectable switching mode (Dry=on or Wet=on).

Protection

Polarity insensitive – on Relay (except 12 Vdc version) and Direct Load electronics

Over-current protection – on Direct Load and PNP/PLC electronics

Short-circuit protection – on Direct Load and PNP/PLC electronics

Load-missing protection – on Direct Load and PNP/PLC electronics

Surge protection (to IEC61326) – available on all versions of the Rosemount 2120

Heartbeat LED

The Rosemount 2120 has a status-indicating ‘heartbeat’ LED, which can be seen at all times and from all angles through a lens in the cover (no lens in metal housings).

Grounding

The Rosemount 2120 must always be grounded either through the terminals or using the external ground connection provided.

Conduit plugs/cable gland

Metal housing: Conduit entries for explosion-proof areas are shipped with one Exd plug (loose in bag) and two dust caps fitted. Use suitably rated cable glands. Unused conduit entries must be sealed with a suitably rated blanking plug.

Glass-filled nylon housing with direct load, PNP/PLC and IS

(1)

electronics are shipped with one PA66

cable gland and one

blanking plug.

Glass-filled nylon housing with relay electronics are shipped with two PA66

(1)

cable glands.

Electrical connections

 Direct load switching (mains two wire) cassette

LOAD

123

(Ground)

Neutral

LINE

Fuse 2A(T)

DPST

Live

OPERATION MODE

Dry On Mode

Wet On Mode

Dry On Wet On

Dry Wet

0.3 0.3 1

Dry Wet

Seconds Delay

R = External load (must be fitted )

U = 20 - 264 V ~ (ac) ( 50/60Hz )

< 4

OFF

20 - 500

= 5 A, 40 ms (inrush)

U = 20 - 60 V ( dc))

< 4 mA

OFF

IL =

20 - 500 mA

= 5 A, 40 ms (inrush)

Direct Load Switching

WARNING

Isolate Supply

Before Removing

The LED flashes when the output is ‘off’ and is constantly lit when it is ‘on’. The LED gives a constant indication that the Rosemount 2120 is functioning correctly (different flash rates are used to indicate a product malfunction) and gives a local indication of the process state.

Magnetic test point

A magnetic test point is located on the side of the housing, allowing a functional test of the Rosemount 2120 and a system connected to it. By holding a magnet to the target, the output changes state for as long as the magnet is held there.

Terminal connection (wire diameter)

Minimum 26 AWG, Maximum 14 AWG (0.13 to 2.5 mm2). Note national regulations.

 NAMUR (light blue) cassette

OPERATION MODE

Dry On Wet On

Dry Wet

0.3 0.3 1

Dry Wet

Seconds Delay

8V dc

Dry On Mode

Wet On Mo de

ION= 2.2 ... 2.5 mA

= 0.8 ... 1.0 mA

OFF

< 1.0 mA

FAULT

A certified intrinsically safe isolating amplifier to IEC 60947-5-6

1. Cable diameter 0.2 to 0.3 in. (5 to 8 mm)

EN 50227 / NAMUR

Emerson.com/Rosemount

Page 13

December 2017

OPERATION MODE

Dry On Mode

Dry Wet

Wet OnMode

Dry

Wet

Dry On WetOn

Seconds Delay

0.3 0.3

8/16 mA

Drives 4-20 mA Analog Input

OFF

A certified intrinsically safe barrier must be used to meet IS requirements

15 ... 17 mA

7.5 ... 8.5 mA

(Ground)

24 Vdc Nominal

FAULT

< 3.7 mA

NC NO

789

NOCNC

RELAY

123

NOCNC

OPERATION MODE

Dry On

Dry Wet

Wet On

Dry Wet

Dry On

Wet On

Seconds Delay

0.3 0.3

Isolate Supply Before Removing

Warnin g

Resistive Load

cos φ = 1 ; L/R = 0 ms

Inductive L oad

Fuse 0.5 (T)PE

(Ground)

DPST

Live

U = 20...264 V ~ (ac)

(50/60 Hz)

U = 20...60 V (dc)

I < 6 mA

MAX

= 5 A

MAX

= 250 V

MAX

= 1250 VA

MAX

= 30 V

MAX

= 240 W

cos φ = 0.4 ; L/R = 7 ms

MAX

= 3.5 A

MAX

= 250 V

MAX

= 875 VA

MAX

= 30 V

MAX

= 170 W

OPERATION MODE

Dry On Mode

Dry Wet

Wet On Mode

Dry Wet

Dry On Wet On

Seconds Delay

0.3 0.3

OUT

PLC/PNP

Isolate Supply Before Removing

(Ground)

0VO/P

U = 20 - 60 V (dc)

I < 4 mA + I

L (MAX)

= 0 - 500mA

OUT(ON)

= U -

2.5 V

L (OFF)

< 100A

Fuse 2A(T)

= 5 A, 40 ms (inrush)

IPK

Rosemount 2120 Level Switch

 8/16 mA (dark blue) cassette

 DPCO dual relay cassette (standard version)

 DPCO dual relay cassette (12 Vdc nominal version)

Dry On

Wet On

Isolate Supply Before Removing12 VDC NOM.

NOCNC

NC NO

Resistive Load cos φ = 1 ;

L/R = 0 ms

= 2 A

MAX

ac:

= 125 V

MAX

= 62.5 VA

MAX

dc:

= 30 V

MAX

= 60 W

MAX

789

Inductive L oad cos φ = 0.4 ;

L/R = 7 ms

MAX

ac:

= 125 V

MAX

= 37.5 VA

MAX

dc:

= 30 V

MAX

= 30 W

MAX

(Ground)

123

OPERATION MODE

Seconds Delay

Dry On

0.3 0.3 1

Fuse 0.5 (T)PE

DPST

U = 9...30 V (dc) I < 4 mA

Wet On

Dry Wet

Dry

Wet

 Solid state PNP output for direct interface to a PLC

NOCNC

RELAY

= 1 A

Note

The external DPST switch that is shown in the wiring diagrams is an optional local disconnect (customer supplied).

Emerson.com/Rosemount

Page 14

Rosemount 2120 Level Switch

Product Certifications

European directive information

December 2017

The EU declaration of conformity for all applicable European directives for this product can be found at

Emerson.com/Rosemount

NAMUR approval

NAMUR NE95 type test report is available upon request. Complies with NAMUR NE21.

Overfill approval

Certificate: Z-65.11-522

TÜV-tested and approved for overfill protection according to the German DIBt/WHG regulations. Certified under safety devices for tanks and piping related to water pollution control.

Hygienic certifications and compliances (surface finish codes 3, 4, 7, and 8)

3-A Authorization 3496

EHEDG Certificate: 102016

ASME-BPE and FDA compliant.

Ordinary location certification for FM

G5 Project ID: 3021776

The switch has been examined and tested to determine that the design meets basic electrical, mechanical, and fire protection requirements by FM, a nationally recognized testing laboratory (NRTL) as accredited by the Federal Occupational Safety and Health Administration (OSHA)

Ordinary location certification for CSA

G6 Certificate Number: 06 CSA 1805769

The switch has been examined and tested to determine that the design meets basic electrical, mechanical, and fire protection requirements by CSA, a nationally recognized testing laboratory as accredited by the Standards Council of Canada (SCC). Single process seal.

Safety Integrity Level (SIL) certification

The Rosemount 2120 is SIL2-certified, and is also SIL3 capable. It has been independently certified to IEC 61508 as required by IEC 61511. Certification was conducted by Exida. If required, add “QT” to the end of the model code. For example, 2120 D 0A K E1 X A0000 QT.

Drinking water approval

Rosemount Measurement Limited, Slough, UK confirms that the wetted parts of the Rosemount type 2120 vibrating level switches are suitable and approved for use in potable water.

The wetted parts of the vibrating level switches executed in:

Stainless steel (option code D) and Alloy C / Alloy C-276 (option code C) with Flanged, NPT thread, BSPT(R) thread, or Tri Clamp process connections, are in accordance with the requirements of DVGW - Worksheet W270.The materials used are classified as toxicologically and microbiologically safe.

Marine approvals

ABS American Bureau of Shipping

GL Germanischer Lloyd

SRS Russian Maritime Registered Shipping (RMRS)

SIL certifications are not available for all switching electronics. See Table 1 on page 4 for exclusions.

Canadian Registration Number

CRN 0F04227.2C

The requirements of CRN are met when a Rosemount 2120 CSA-approved vibrating fork level switch model is configured with 316/316L stainless steel (1.4401/1.4404) process-wetted parts and either NPT threaded or 2 to 4-in. ASME B16.5 flanged process connections.

Emerson.com/Rosemount

Page 15

December 2017

Hazardous locations certifications

Note

A certified isolating amplifier or barrier must be used for intrinsic safety.

Rosemount 2120 Level Switch

North American approvals

Factory Mutual (FM) explosion-proof approval

E5 Project ID: 3012658

Explosion-proof for Class I, Div. 1, Groups A, B, C, and D Temperature Class: T6 (T Enclosure: Type 4X

Factory Mutual (FM) intrinsically safe approval and non-incendive

I5 Project ID: 3011456

Intrinsically Safe for Class I, Div. 1, Groups A, B, C, and D Class I, Zone 0, AEx ia IIC Non-incendive for Class I, Div. 2, Groups A, B, C, and D Class I, Zone 2, IIC Temperature Code: T5 (T Control Drawing: 71097/1154 (with NAMUR electronics) Control Drawing: 71097/1314 (with 8/16 mA electronics)

–40 to 75 °C)

amb

–40 to 80 °C, Tproc < 80 °C)

amb

Canadian approvals

Canadian Standards Association (CSA) explosion-proof

E6 Project ID: 1786345

Explosion-proof for Class I, Div. 1, Groups A, B, C, and D Temperature Class: T6 (T Enclosure: Type 4X Single process seal

Canadian Standards Association (CSA) intrinsically safe and non-incendive

I6 Certificate Number: 06 CSA 1786345

Intrinsically Safe for Class I, Div. 1, Groups A, B, C, and D Class 1, Zone 0, Ex ia IIC Non-Incendive for Class I, Div. 2, Groups A, B, C, and D Temperature Code: T5 (T Control Drawing: 71097/1179 (with NAMUR electronics) Control Drawing: 71097/1315 (with 8/16 mA electronics) Single process seal

–40 to 75 °C)

amb

–40 to 80 °C, Tproc < 80 °C)

amb

European approvals

ATEX flameproof and dust-proof approval

E1 Certificate: Sira 05ATEX1129X

Flameproof and dust-proof: ATEX Marking II 1/2 GD Ex db IIC T6...T2 Ga/Gb Ex tb IIIC T85 °C...T265 °C Db

ATEX intrinsically safe approval

I1 Certificate: Sira 05ATEX2130X

Intrinsic Safety for gas and dust environments: ATEX Marking II 1 GD Ex ia IIC T5...T2 Ga Ex ia IIIC T85 °C...T265 °C Da

International approvals

International Electrotechnical Commission (IEC) flameproof and dust-proof approval

E7 Certificate: IECEx SIR 06.0051X

Flameproof and dust-proof: Ex db IIC T6...T2 Ga/Gb Ex tb IIIC T85°C...T265°C Db

International Electrotechnical Commission (IEC) intrinsically safe approval

I7 Certificate: IECEx SIR 06.0070X

Intrinsically Safe for gas and dust environments: Ex ia IIC T5...T2 Ga Ex ia IIIC T85 °C...T265 °C Da

Technical Regulation Customs Union (EAC) approvals

EM Certificate: TC RU C-GB.BH02.B.00175

Flameproof: 1Exd IIC T6...T3 X Ta (see table in the certificate)

Emerson.com/Rosemount

IM Certificate: TC RU C-GB.BH02.B.00175

Intrinsic Safety: 0Exia IIC T5...T3 X Ta (see table in the certificate)

Page 16

Rosemount 2120 Level Switch

0.5 (13) switchpoint

(when mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

(127)

3.5 (90)

1.7 (44)

2.7 (69

Allow 1.2 (30)

to remove cover

Glass-filled nylon housing

Aluminum/stainless steel housing

Allow 1.2 (30)

to remove cover

4.7 (120)

5.9

(151)

2.7

(69)

1.7 (44)

0.5 (13) switchpoint (when mounted vertically)

0.5 (13) switchpoint

(when mounted horizontally)

4 (102)

Dimensional Drawings

Figure 3. 3/4- and 1-in. Threaded Mounting (Standard Length)

December 2017

A. Cable entry M20 x 1.5 or 1/2-in. ANPT C. 1.6 (40) A/F hexagon B. Cable entry M20 x 1.5 or

Dimensions are in inches (millimeters). See the Rosemount 2120 web page

/4-in. ANPT D. 3/4- or 1-in. thread

for all 1-in. BSPP threaded dimension drawings.

Emerson.com/Rosemount

Page 17

December 2017

E(M)

1.7 (44)

0.5 (13)

switchpoint (when

mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

5.9

(151)

Allow 1.2 (30)

to remove cover

Ø1.14 (29) for 1-in. thread Ø0.9 (23) for

/4-in. thread

4.7 (120)

Allow 1.2 (30)

to remove cover

6.7

(171)

Ø1.14 (29) for 1-in. thread Ø0.9 (23) for

/4-in. thread

0.5 (13) switchpoint (when mounted vertically)

0.5 (13)

switchpoint (when

mounted horizontally)

1.7 (44)

E(M)

3.5 (90)

4 (102)

Glass-filled nylon housing

Aluminum/stainless steel housing

Figure 4. 3/4- and 1-in. Thread Mounting (Extended Length)

Rosemount 2120 Level Switch

A. Cable entry M20 x 1.5 or 1/2-in. ANPT C. 1.6 (40) A/F hexagon B. Cable entry M20 x 1.5 or

Dimensions are in inches (millimeters). See the Rosemount 2120 web page

Table 6. Fork Length for 3/4- and 1-in. Threaded Rosemount 2120

/4-in. ANPT D. 3/4- or 1-in. thread

Process

connection

/4-in. thread 1.7 in. (44 mm) 3.75 in. (95 mm) 157.5 in. (4000 mm)

Standard length

fork length code A

1-in. thread 1.7 in. (44 mm) 3.74 in. (94 mm) 157.5 in. (4000 mm)

for all 1-in. BSPP threaded dimension drawings.

Minimum length

fork length code E (M)

Maximum length

fork length code E (M)

Emerson.com/Rosemount

Page 18

Rosemount 2120 Level Switch

0.5 (13) switchpoint

(when mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

5.2

(132)

3.5 (90)

1.7 (44)

2.5

(64)

Allow 1.2 (30)

to remove cover

Glass-filled nylon housing

(and not hygienically approved)

Aluminum/stainless steel housing

(and not hygienically approved)

Allow 1.2 (30)

to remove cover

4.7 (120)

6.1

(155)

2.5

(64)

1.7 (44)

0.5 (13) switchpoint (when mounted vertically)

0.5 (13) switchpoint

(when mounted horizontally)

4 (102)

Ø0.9 (23)

0.5 (13) switchpoint

(when mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

5.2

(132)

3.5 (90)

1.7 (44)

2.5

(64)

Allow 1.2 (30)

to remove cover

Ø1.65 (42)

4 (102)

Glass-filled nylon housing

(and hygienically approved)

Aluminum steel housing

(and hygienically approved)

Allow 1.2 (30)

to remove cover

4.7 (120)

6.1

(155)

2.5

(64)

1.7

(44)

0.5 (13) switchpoint (when mounted vertically)

0.5 (13) switchpoint

(when mounted horizontally)

Ø1.65 (42)

Ø0.9 (23)

Figure 5. Tri Clamp Mounting (Standard Length, Surface Finish Codes 1 and 2)

December 2017

A. Cable entry M20 x 1.5 or 1/2-in. ANPT C. 1.6 (40) A/F hexagon B. Cable entry M20 x 1.5 or Dimensions are in inches (millimeters).

/4-in. ANPT D. 11/2-in. (38 mm) or 2-in. (51 mm) Tri Clamp, surface finish codes 1 and 2

Figure 6. Tri Clamp Mounting (Standard Length, Surface Finish Codes 3, 4, 7, and 8)

A. Cable entry M20 x 1.5 or 1/2-in. ANPT C. 1.6 (40) A/F hexagon B. Cable entry M20 x 1.5 or Dimensions are in inches (millimeters).

/4-in. ANPT D. 11/2-in. (38 mm) or 2-in. (51 mm) Tri Clamp, surface finish codes 3, 4, 7, and 8

Emerson.com/Rosemount

Page 19

December 2017

E(M)

1.7 (44)

0.5 (13) switchpoint

(when mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

5.2

(132)

Allow 1.2 (30)

to remove cover

Ø1.14 (29)

4.7 (120)

Allow 1.2 (30)

to remove cover

6.4

(162)

Ø1.14 (29)

0.5 (13) switchpoint (when mounted vertically)

0.5 (13) switchpoint (when mounted

horizontally)

1.7 (44)

E(M)

3.5 (90)

4 (102)

Glass-filled nylon housing

(and not hygienically approved)

Aluminum/stainless steel housing

(and not hygienically approved)

Ø1.61 (41)

Ø1.6 (41)

Figure 7. Tri Clamp Mounting (Extended Length, Surface Finish Codes 1 and 2)

Rosemount 2120 Level Switch

A. Cable entry M20 x 1.5 or 1/2-in. ANPT C. 11/2-in. (38 mm) or 2-in. (51 mm) Tri Clamp, surface finish codes 1 and 2 B. Cable entry M20 x 1.5 or

Dimensions are in inches (millimeters).

Table 7. Fork Lengths for Tri Clamp Rosemount 2120 (Not Hygienically Approved)

Process

connection

Tri Clamp

(surface finish code 1)

Tri Clamp

(surface finish code 2)

Emerson.com/Rosemount

/4-in. ANPT

Standard length

fork length code A

1.7 in. (44 mm) 4.13 in. (105 mm) 157.5 in. (4000 mm)

1.7 in. (44 mm) 4.13 in. (105 mm) 157.5 in. (1000 mm)

Minimum length

fork length code E (M)

Maximum length

fork length code E (M)

Page 20

Rosemount 2120 Level Switch

E(M)

1.7 (44)

0.5 (13) switchpoint

(when mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

5.2

(132)

Allow 1.2 (30)

to remove cover

Ø0.9 (23)

4.7 (120)

Allow 1.2 (30)

to remove cover

6.1

(155)

Ø0.9 (23)

0.5 (13) switchpoint (when mounted vertically)

0.5 (13) switchpoint

(when mounted horizontally)

1.7 (44)

E(M)

3.5 (90)

4 (102)

Glass-filled nylon housing

(and hygienically approved)

Aluminum housing

(and hygienically approved)

Ø1.65 (42)

Figure 8. Tri Clamp Mounting (Extended Length, Surface Finish Codes 3, 4, 7, and 8)

December 2017

A. Cable entry M20 x 1.5 or 1/2-in. ANPT C. 11/2-in. (38 mm) or 2-in. (51 mm) Tri Clamp, surface finish codes 3, 4, 7, and 8 B. Cable entry M20 x 1.5 or

Dimensions are in inches (millimeters).

Table 8. Fork Length for Tri Clamp Rosemount 2120 (Hygienically Approved)

(surface finish codes 3, 4, 7, and 8)

Process

connection

Tri Clamp

/4-in. ANPT

Standard length

fork length code A

fork length code E (M)

Minimum length

Maximum length

fork length code E (M)

1.7 in. (44 mm) 4.13 in. (105 mm) 157.5 in. (1000 mm)

Emerson.com/Rosemount

Page 21

December 2017

4.8

(121)

1.7 (44)

0.5 (13)

switchpoint (when

mounted horizontally)

Ø1.14 (29) for 1

/2 in. or larger flange; Ø0.9 (23) for up to 1 in. flange; Ø1.18 (30) for ECTFE-coated flanges

0.5 (13) switchpoint (when mounted vertically)

Allow 1.2 (30)

to remove cover

4.7 (120)

Allow 1.2 (30)

to remove cover

(154)

4.0

(102)

1.7 (44)

0.5 (13)

switchpoint (when

mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

Ø1.14 (29) for 1

/2 in. or larger flange; Ø0.9 (23) for 1 in. flange; Ø1.18 (30) for ECTFE-coated flanges

3.5 (90)

4 (102)

(102)

Glass-filled nylon housing

Aluminum/stainless steel housing

Figure 9. Flange Mounting (Standard Length)

Rosemount 2120 Level Switch

A. Cable entry M20 x 1.5 or 1/2-in. ANPT B. Cable entry M20 x 1.5 or

Dimensions are in inches (millimeters).

Emerson.com/Rosemount

/4-in. ANPT

Page 22

Rosemount 2120 Level Switch

1.7 (44)

4.8

(121)

E(M)

0.5 (13)

switchpoint (when

mounted horizontally)

Ø1.1 (28) for 1

/2 in. or larger flange; Ø0.9 (23) for up to 1 in. flange; Ø1.18 (30) for ECTFE-coated flanges

0.5 (13) switchpoint (when mounted vertically)

Allow 1.2 (30)

to remove cover

4.7 (120)

Allow 1.2 (30)

to remove cover

0.5 (13)

Switchpoint (when

mounted horizontally)

0.5 (13) switchpoint (when mounted vertically)

Ø1.14 (29)) for 1

/2 in. or larger flange; Ø0.9 (23) for up to 1 in. flange; Ø1.18 (30) for ECTFE-coated flanges

(154)

E(M)

3.5 (90)

4 (102)

1.7 (44)

Glass-filled nylon housing

Aluminum/stainless steel housing

Figure 10. Flange Mounting (Extended Length)

December 2017

A. Cable entry M20 x 1.5 or 1/2-in. ANPT B. Cable entry M20 x 1.5 or

Dimensions are in inches (millimeters).

Table 9. Fork Length for Flanged Rosemount 2120

Process connection material

ECTFE co-polymer coated 4 in. (102 mm) 3.5 in. (89 mm) 59.1 in. (1500 mm)

Minimum length

model code E (M)

Maximum length

model code E (M)

/4-in. ANPT

Standard length

model code H

Stainless steel 4 in. (102 mm) 3.5 in. (89 mm) 157.5 in. (4000 mm)

Alloy C and Alloy C-276 4 in. (102 mm) 3.5 in. (89 mm) 157.5 in. (4000 mm)

Emerson.com/Rosemount

Page 23

December 2017

Rosemount 2120 Level Switch

Emerson.com/Rosemount

Page 24

Rosemount 2120 Level Switch

00813-0100-4030, Rev HC

Global Headquarters

Emerson Automation Solutions

6021 Innovation Blvd. Shakopee, MN 55379, USA

+1 800 999 9307 or +1 952 906 8888 +1 952 949 7001 RFQ.RMD-RCC@Emerson.com

North America Regional Office

Emerson Automation Solutions

8200 Market Blvd. Chanhassen, MN 55317, USA

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Latin America Regional Office

Emerson Automation Solutions

1300 Concord Terrace, Suite 400 Sunrise, FL, 33323, USA

+1 954 846 5030 +1 954 846 5121 RFQ.RMD-RCC@Emerson.com

Product Data Sheet

December 2017

Europe Regional Office

Emerson Automation Solutions Europe GmbH

Neuhofstrasse 19a P.O. Box 1046 CH 6340 Baar Switzerland

+41 (0) 41 768 6111 +41 (0) 41 768 6300 RFQ.RMD-RCC@Emerson.com

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Emerson Automation Solutions Asia Pacific Pte Ltd

1 Pandan Crescent Singapore 128461

+65 6777 8211 +65 6777 0947 Enquiries@AP.Emerson.com

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Emerson Automation Solutions

Emerson FZE P.O. Box 17033, Jebel Ali Free Zone - South 2 Dubai, United Arab Emirates

+971 4 8118100 +971 4 8865465 RFQ.RMTMEA@Emerson.com

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The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount and Rosemount logotype are trademarks of Emerson. 3-A is a trademark of 3-A Sanitary Standards, Inc. NEMA is the registered trademark and service mark of the National Electrical Manufacturers Association. All other marks are the property of their respective owners. © 2017 Emerson. All rights reserved.

Rosemount 2120 Specifications

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Ordering Information

Spare Parts and Accessories

Specifications

General

Mechanical

Functional

Performance

Electrical

Product Certifications

European directive information

NAMUR approval

Overfill approval

Ordinary location certification for FM

Ordinary location certification for CSA

Safety Integrity Level (SIL) certification

Drinking water approval

Marine approvals

Canadian Registration Number

Hazardous locations certifications

Dimensional Drawings