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Siemens FI 01 · 2021

Level measurement

Continuous level measurement

Radar level transmitters

SITRANS Probe LR

■

Overview

SITRANS Probe LR is a 2-wire, 6 GHz pulse radar level transmit-

ter for continuous monitoring of liquids and slurries in storage

vessels with nominal pressure and temperature, to a range of

20 m (66 ft).

■

Benefits

• Uni-Construction polypropylene rod antenna standard

• Easy installation and simple startup

• Programming using infrared Intrinsically Safe handheld

programmer, SIMATIC PDM or HART handheld communicator

• Communication using HART

• Process Intelligence signal processing

• Auto False-Echo Suppression of false echoes

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Application

The Probe LR is ideal for applications with chemical vapors,

temperature gradients, vacuum or pressure, such as simple

chemical storage or water treatment vessels. SITRANS Probe LR

has a range of 0.3 to 20 m (1 to 65 ft).

Probe LR is designed for safe and simple programming using

the Intrinsically Safe handheld programmer without having to

open the instrument’s lid. It has a standard Uni-Construction

polypropylene rod antenna that offers excellent chemical resis-

tance and is hermetically sealed. The Uni-Construction antenna

includes an internal, integrated shield that eliminates vessel

nozzle interference.

SITRANS Probe LR incorporates Process Intelligence signal

processing. The Probe LR also has a high signal-to-noise ratio

leading to improved reliability.

Startup is easy with as few as two parameters for basic opera-

tion. Programming is simple using SIMATIC PDM, HART hand-

held communicator or the Intrinsically Safe handheld program-

mer.

• Key Applications: chemical storage, wastewater wet well, and

drilling mud

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Configuration

SITRANS Probe LR installation, dimensions in mm (inch)

ParabolicFlatConical

Mounting unit on vessel

Mounting on a manhole cover Mounting on a nozzle

Min. 300 mm (1 ft) for every

3 m (10 ft) of vessel wall

Installation

Beam

angle 28°

Min.

10 (0.4)

Min. 100 (4)

SITRANS Probe LR

shield length 100 (4) or

250 (10) standard

lengths

Note:

Beam angle is the

width of the cone

where the energy

density is half of

the peak energy

density.

The peak energy

density is directly

in front of and in

line with the rod

antenna.

•

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Siemens FI 01 · 2021

Level measurement

Continuous level measurement

Radar level transmitters

SITRANS Probe LR

■

Technical specifications

Mode of operation

Measuring principle Pulse radar level measurement

Frequency C-band, approx. 6 GHz

Measuring range

0.3 ... 20 m (1.0 ... 65 ft)

Output

Analog output 4 ... 20 mA

Accuracy

± 0.02 mA

Span Proportional or inversely proportional

Communications

HART

Performance (reference conditions)

Accuracy ± the greater of 0.1 % of range or

10 mm (0.4 inch)

• From end of antenna to 600 mm

(23.62 inch)

40 mm (1.57 inch)

• Remainder of range 10 mm

(0.4 inch) or 0.1 % of span

(whichever is greater)

10 mm (0.4 inch) or 0.1 % of span

(whichever is greater)

Influence of ambient temperature

0.003 %/K

Repeatability

± 5 mm (2 inch)

Fail-safe mA signal programmable as high,

low or hold (LOE)

Rated operating conditions

Installation conditions

• Location Indoor/outdoor

Ambient conditions (enclosure)

• Ambient temperature -40 ... +80 °C (-40 ... +176 °F)

• Storage temperature

-40 ... +80 °C (-40 ... +176 °F)

• Installation category

• Pollution degree

Medium conditions

Dielectric constant ε

> 3.0

Vessel temperature

-40 ... +80 °C (-40 ... +176 °F)

Vessel pressure 3 bar g (43.5 psi g)

Design

Enclosure

• Body construction PBT (Polybutylene Terephthalate)

• Lid construction

PEI (Polyether Imide)

• Cable inlet

2 x M20 x 1.5 or 2 x ½" NPT with

adapter

Degree of protection

Type 4X/NEMA 4X, Type 6/NEMA 6,

IP67, IP68

Weight

1.97 kg (4.35 lb)

Antenna

• Material Polypropylene rod, hermetically

sealed construction

• Dimensions

Standard 100 mm (4 inch) shield for

maximum 100 mm (4 inch) nozzle or

optional 250 mm (10 inch) long shield

Process connections

1½" NPT [(Taper), ANSI/ASME

B1.20.1]

R 1½" [(BSPT), EN 10226]

G 1½" [(BSPP), EN ISO 228-1]

Power supply • Nominal 24 V DC with max. 550 Ω,

maximum 30 V DC

• 4 ... 20 mA

Certificates and approvals

General CSA

US/C

, CE, FM, RCM

Marine • Lloyd's Register of Shipping

• ABS Type Approval

Radio

FCC, Industry Canada, RED, RCM

Hazardous

• Intrinsically Safe (Brazil) INMETRO Ex ia IIC T4 Ga

• Intrinsically Safe (Canada)

CSA Class I, Div. 1, Groups A, B, C,

D; Class II, Div. 1, Group G; Class III

• Intrinsically Safe (Europe)

ATEX II 1G EEx ia IIC T4

• Intrinsically Safe (International)

IECEx Ex ia IIC T4

• Intrinsically Safe

(Russia/Kazakhstan)

EAC Ex ia

• Intrinsically Safe (USA)

FM Class I, Div. 1, Groups A, B, C, D;

Class II, Div. 1, Groups E, F, G;

Class III

Programming

Handheld programmer HART communicator 375

SIMATIC PDM

Intrinsically safe Siemens handheld

programmer (optional)

Infrared receiver

• Approvals (handheld programmer)

ATEX II 1G EEx ia IIC T4

CSA and FM Class I, Div. 1,

Groups A, B, C, D, T6

at max. ambient

Display (local)

Multi-segment alphanumeric liquid

crystal with bar graph (representing

level) available in four languages

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Siemens FI 01 · 2021

Level measurement

Continuous level measurement

Radar level transmitters

SITRANS Probe LR

■

Selection and ordering data Article No. Order code

SITRANS Probe LR Radar level transmitter

Continuous, non-contact, 20 m (66 ft) range,

for liquids and slurries.

7ML5430-

7 7 7 7 0

Click on the Article No. for the online

configuration in the PIA Life Cycle Portal.

Enclosure/Cable inlet

Plastic, (PBT), 2 x ½" NPT 1

Plastic, (PBT), 2 x M20 x 1.5 2

Antenna type/Material - (max. 3 bar and 80 °C)

Polypropylene antenna

1½" NPT [(Taper), ANSI/ASME B1.20.1],

comes with integral 100 mm shield

R 1½" [(BSPT), EN 10226],

comes with integral 100 mm shield

G 1½" [(BSPP), EN ISO 228-1],

comes with integral 100 mm shield

1½" NPT [(Taper), ANSI/ASME B1.20.1],

comes with integral 250 mm shield

R 1½" [(BSPT), EN 10226],

comes with integral 250 mm shield

G 1½" [(BSPP), EN ISO 228-1],

comes with integral 250 mm shield

Approvals

General Purpose, CE, RED, RCM A

General Purpose, CSA

us/c

, FM, FCC B

CSA Class I, Div. 1, Groups A, B, C, D, Class II,

Div. 1, Group G, Class III, FCC, Intrinsically Safe

FM, Class I, II and III, Div. 1,

GroupsA,B,C,D,E,F,G, FCC, IntrinsicallySafe

IECEx Ex ia IIC T4; ATEX II 1G EEx ia IIC T4, RED,

RCM, Intrinsically Safe; INMETRO Ex ia IIC T4 Ga;

EAC

Communication/Output

4 ... 20 mA, HART 1

Further designs

Please add "-Z" to Article No.

and specify Order code(s).

Stainless steel tag [69 x 50 mm (2.71 x 1.97 inch)]:

Measuring-point number/identification

(max. 27 characters) specify in plain text

Y15

Manufacturer's test certificate:M to DIN 55350,

Part 18 and to ISO 9000

C11

Operating Instructions

All literature is available to download for free, in a

range of languages, at

http://www.siemens.com/processinstrumentation/documentation

Accessories Article No.

Handheld programmer, Intrinsically Safe,

ATEX II 1G, Ex ia

7ML5830-2AH

HART modem/USB

(for use with a PC and SIMATIC PDM)

7MF4997-1DB

One metallic cable gland M20 x 1.5,

rated -40 ... +80 °C (-40 ... +176 °F)

7ML1930-1AP

SITRANS RD100, loop powered display -

see Chapter 7

7ML5741-.....-.

SITRANS RD150, remote digital display for

4 ... 20 mA and HART devices - see Chapter 7

7ML5742-.....-....

SITRANS RD200, universal input display with

Modbus conversion - see Chapter 7

7ML5740-.....-..

SITRANS RD300, dual line display with totalizer

and linearization curve and Modbus conversion -

see Chapter 7

7ML5744-.....-..

For applicable back up point level switch -

see point level measurement section

Spare parts

Plastic lid 7ML1830-1KB

For applicable back up point level switch -

see point level measurement section

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Siemens FI 01 · 2021

Level measurement

Continuous level measurement

Radar level transmitters

SITRANS Probe LR

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Dimensional drawings

SITRANS Probe LR, dimensions in mm (inch)

■

Circuit diagrams

SITRANS Probe LR connections

Std. 115 (4.5)

[Optional 268 (10.5)]

Std.: 273 (10.8) min.

Option: 423 (16.7) max.

Std.: 552 (21.7) min.

Option: 702 (27.6) max.

Inactive shield length

(internal)

Standard: 100 (4)

Optional: 250 (10)

Polypropylene

rod antenna

Locking collar

Mounting thread

1½" NPT,

R 1½" BSPT,

G 1½" BSPP

Enclosure/

electronics

Lid screws

Lid

½" NPT cable entry

(or alternatively M20 x 1.5)

103.5

(4)

139

(5.5)

129

(5.1)

134

(5.3)

23 (0.9)

Part number: 7ML5830-2AH

Hand Programmer

DC terminal shall be supplied from an SELV source in accordance with IEC-1010-1 Annex H.

Notes:

All field wiring must have insulation suitable for rated input voltages.-

Use shielded twisted pair cable (14-22 AWG).-

Separate cables and conduit may be required to conform to standard instrumentation wiring practices or electrical codes.-

Connect the wires to the

terminals as shown: the

polarity is identified on the

terminal block.

Strain relief

(or NPT cable inlet)

SITRANS Probe LR