Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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Overview
The SITRANS LR400 is a 4-wire, 24 GHz FMCW radar level
transmitter for continuous monitoring of liquids and slurries in
storage and process vessels including high temperature and
high pressure, to a range of 50 m (164 ft); ideal for low dielectric
media.
■
Benefits
• Easy installation and commissioning, low maintenance
• Self-calibration with internal reference
• Built-in diagnostics
• Auto False-Echo Suppression and advanced echo processing
• 24 GHz and high signal-to-noise ratio
• Communication using HART or PROFIBUS PA
• Programming using infrared Intrinsically Safe handheld
programmer or with SIMATIC PDM or HART handheld device
■
Application
It provides excellent results on low dielectric media.
SITRANS LR400 is available for standard applications and for
applications that require explosion proof protection.
SITRANS LR400 features robust enclosure, flange and horn
components. It is virtually unaffected by atmospheric or
temperature conditions within the vessel.
Safe on-site local programming is simple using the Intrinsically
Safe handheld programmer. SIMATIC PDM can be used for easy
remote programming.
The characteristics of 24 GHz and high signal-to-noise ratio
contribute to exceptional signal reflection, regardless of the
dielectric value of the medium.
• Key Applications: long-range liquid or slurry applications,
high temperature [up to 250 °C (480 °F)] or high pressure,
low dielectric media, such as LPG (liquid, petroleum, gas)
without the need for stilling pipes
■
Configuration
SITRANS LR400 installation, dimensions in mm (inch)
Beam angle
For best signal, always use largest horn size possible.Note:
Installation in mounting nozzle
4" long horn antenna
3" short horn antenna
Parabolic
Conical
Mounting unit on vessel
13°
10
(0.39)
9°
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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Technical specifications
Mode of operation
Measuring principle FMCW radar level measurement
Frequency
24 ... 25 GHz FMCW
Measuring range 0.35 ... 50 m (1.15 ... 164 ft)
Output
Analog output (HART)
• Signal range Optically isolated 4 ... 20 mA
•Load Max. 600 (330 for [ia]
versions, Area classification
options G, L, P, S)
• Relay NC or NO function, max. DC 50 V,
max. 200 mA, rating 5 W
Communication HART, optional PROFIBUS PA
PROFIBUS PA protocol Layer 1 and 2, Class A, Profile 3.0
Performance
(Reference conditions)
Dead band 0 ... 350 mm from bottom edge of
flange
Error in measurement at +25 °C
(+77 °F)
5 mm from 2 ... 10 m
15 mm from 10 ... 50 m
• Repeatability 1mm
•Fail-safe
mA signal programmable as
high, low or hold (LOE)
Rated operating conditions
Amb. temperature for enclosure -40 ... +65 °C (-40 ... +149 °F)
Location Indoor/outdoor
Installation category II
Pollution degree 4
Medium conditions
Dielectric constant
r
>1.4
Process temperature range
• Standard -40 ... +200 °C (-40 ... +392 °F)
-20 ... +200 °C (-4 ... +392 °F) for
SITRANS LR400 with ATEX rating
• With optional temperature
extension
-40 ... +250 °C (-40 ... +482 °F)
Vessel Pressure Up to 40 bar g (process
connection dependent)
Design
Weight Approx. 12.2 kg (26.8 lb) with
3 inch 150 psi flange
Materials
• Enclosure Die-cast aluminum, painted
• Degree of protection IP67/Type 4X/NEMA 4X,
Type 6/NEMA 6
• Cable inlet 2x M20x1.5 or ½" NPT
Process connections
• Flat faced flanges 316L stainless steel, 80, 100,
150 mm, bolt holes matching
EN 1092-1 and JIS B 2220
• Raised face flanges 316L stainless steel, 3 inch,
4 inch, 6 inch, bolt holes
matching ASME B 16.5
Programming
Intrinsically Safe Siemens handheld
programmer
(ordered separately)
Infrared receiver
• Approvals for handheld
programmer
IS model with ATEX EEx ia IIC T4,
CSA/FM Class I, Div. 1, Groups A,
B, C, D T6 at max. ambient
temperature of 40 °C (104 °F)
Handheld communicator
HART communicator 375
PC SIMATIC PDM
Display (local) Alphanumeric LCD for readout
and entry
Power supply
100 ... 230 V AC ± 15 %
(50/60 Hz), 6 W (12 VA)
or
24 V DC +25/-20 %, 6 W
(optional)
Certificates and approvals
Safety CSA
US/C
, CE, FM, C-TICK
Shipping • Lloyd's Register of Shipping
• ABS
Radio
Europe (R&TTE, CETECOM),
Industry Canada, FCC, C-TICK
Hazardous
• Flame Proof/Increased Safety
(Brazil)
INMETRO
• Explosion Proof (Canada/USA)
CSA/FM Class I, Div. 1, Groups B,
C, D; Class II, Div. 1, Groups E, F,
G; Class III T6
• Flame Proof/Increased Safety
(Europe)
ATEX II 1/2 G EEx dem IIC T6
• Flame Proof/Increased Safety with
Intrinsically Safe output(Europe)
ATEX II 1/2 G EEx dem [ia] IIC T6
Optional equipment
Purging (self-cleaning) system
PTFE dust cover
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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Selection and Ordering data
Article No.
SITRANS LR400
4-wire, 24 GHz FMCW radar level transmitter for
continuous monitoring of liquids and slurries in
storage and process vessels including high
temperature and high pressure, to a range of
50 m (164 ft); ideal for low dielectric media.
Order handheld programmer separately
7ML5421-
77777
-
7777
Process temperature range
-40 °C ... +200 °C (-40 ... +392 °F), standard 0
-40 °C ... +250 °C (-40 ... +482 °F),
high temperature extension
1
Process connection
Universal flange 3 inch/80 mm
1)
A
Universal flange 4 inch/100 mm
1)
B
Universal flange 6 inch/150 mm
1)
D
DN 80, PN 16, Type A, flat faced S
DN 80, PN 40, Type B1, raised face C
DN 100, PN 16, Type A, flat faced T
DN 100, PN 40, Type B1, raised face G
DN 150, PN 16, Type A, flat faced U
3" ASME, 150 lb, raised face E
3" ASME, 300 lb, raised face F
4" ASME, 150 lb, raised face J
4" ASME, 300 lb, raised face K
6" ASME, 150 lb, raised face N
JIS, DN 80 10K Q
JIS, DN 100 10K R
JIS, DN 150 10K
(Note: Flange bolting patterns and facings
dimensionally correspond to the applicable
ASME B16.5, or EN 1092-1, or JIS B 2220 standard.)
V
Antenna
Horn antenna, long 93 mm (3.66 inch) diam. for
100 mm (4 inch) nozzles
D
Horn antenna, short 74 mm (2.91 inch) diam. for
80 mm (3 inch) nozzles
K
Antenna purging system
None 0
Purging system
Note: Available with process connections B or D,
and for area classification B only
1
Process seal/gasket
PTFE for -40 ... +250 °C (-40 ... +482 °F)
flange temperatures
1
FKM for -20 ... +200 °C (-4 ... +392 °F)
flange temperatures
2)
3
Output/communication
4 ... 20 mA, HART 0
PROFIBUS PA 1
Power supply/cable inlet
100 ... 230 V AC
• 2 x M20x1.5 B
• 2 x ½" NPT C
24 V DC
• 2 x M20x1.5 E
•2 x ½"NPT F
Approvals
General Purpose, CSA
US/C
, Industry Canada, FCC,
CE and R&TTE
B
ATEX II 2G EEx d IIC T6; CE, R&TTE;
INMETRO Ex d IIC T6
E
ATEX II 2G EEx dem IIC T6; CE, R&TTE;
INMETRO Ex de mb II T6
F
ATEX II 2G EEx dem [ia] IIC T6; CE, R&TTE;
INMETRO Ex de [ia] mb IIC T6
3)
G
ATEX II 1/2 GD EEx d IIC T6; CE, R&TTE;
INMETRO Ex d IIC T6
2)
J
ATEX II 1/2 GD EEx dem IIC T6; CE, R&TTE;
INMETRO Ex de mb IIC T6
2)
K
ATEX II 1/2 GD EEx dem [ia] II T6; CE, R&TTE;
INMETRO Ex de [ia] mb IIC T6
2)3)
L
FM Class I, Div. 1, Groups B, C, D; Class II/III,
Div. 1, Groups E, F, G; FCC
2)
T
CSA Class I, Div. 1, Groups B, C, D; Class II/III,
Div. 1, Groups E, F, G; FCC
2)
U
Local operation
Local Display Only. Handheld programmer not
included
(Order programmer separately)
2
1)
Available with antenna purging system option 1 only, universal,
0.5 bar g (7.25 psi g) maximum
2)
Available with process temperature range option 0 only
3)
Available only with power supply option E or F
Selection and Ordering data
Article No.
SITRANS LR400
4-wire, 24 GHz FMCW radar level transmitter for
continuous monitoring of liquids and slurries in
storage and process vessels including high
temperature and high pressure, to a range of
50 m (164 ft); ideal for low dielectric media.
Order handheld programmer separately
7ML5421-
77777
-
7777
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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1)
Product shipped with plastic cable gland, rated to -20 °C.
If -40 °C rating required, then metallic cable gland is recommended.
Selection and Ordering data
Order code
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
Inspection Certificate Type 3.1 per EN 10204
C12
Operating Instructions Article No.
English
7ML1998-5FH06
German
7ML1998-5FH36
French
7ML1998-5FH16
Note: The Operating Instructions should be
ordered as a separate line item on the order.
Multi-language Quick Start manual
This device is shipped with the Siemens Milltronics
manual DVD containing the ATEX Quick Start and
Operating Instructions library.
A5E32007509
Accessories Article No.
Handheld programmer Intrinsically Safe, EEx ia
7ML5830-2AJ
Long horn dust cover, PTFE
7ML1930-1AH
Short horn dust cover, PTFE
7ML1930-1AJ
HART modem/RS 232
(for use with a PC and SIMATIC PDM)
7MF4997-1DA
HART modem/USB
(for use with a PC and SIMATIC PDM)
7MF4997-1DB
One metallic cable gland M20x1.5,
rated -40 ... +80 °C (-40 ... +176 °F), HART
(two required)
1)
7ML1930-1AP
One metallic cable gland M20x1.5,
rated -40 ... +80 °C (-40 ... +176 °F),
PROFIBUS PA (two required)
1)
7ML1930-1AQ
SITRANS RD100 Remote display - see Chapter 7
SITRANS RD200 Remote display - see Chapter 7
SITRANS RD500 web, datalogging, alarming,
ethernet, and modem support for instrumentation -
see Chapter 7
7ML5750-
1AA00-0
For applicable back up point level switch -
see point level section on page
4/9
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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Characteristic curves
SITRANS LR400 Process Pressure/Temperature derating curves
80 mm, 100 mm, 150 mm, PN 16 or 10K 80 mm, 100 mm, 150 mm, PN 16 or 10K
Pressure (bar, gauge)
Temperature (°C)
Flange 22482 or 22487,
FF standard process seal
Pressure (bar, gauge)
Temperature (°C)
Flange 22483 or 22488,
RF standard process seal
ATEX II 2 G approval options
Pressure (bar, gauge)
Temperature (°C)
Flange 22482 or 22487,
FF process seal for hazardous locations
Pressure (bar, gauge)
Temperature (°C)
Flange 22483 or 22488,
RF process seal for hazardous locations
ATEX II 1/2 G approval options
30.0
15.0
10.0
25.0
20.0
5.0
0.0
050100150200
80 mm, 100 mm, PN 40
150 mm, PN 40
300
-50
-100 250
30.0
15.0
10.0
25.0
20.0
5.0
0.0
050100150200
3 inch, 4 inch, 300#
6 inch, 300#
3 inch, 4 inch, 6 inch, 150#
300
-50
-100 250
30.0
15.0
10.0
25.0
20.0
5.0
0.0
050100150200 300
-50
-100 250
35.0
45.0
40.0
050100150200 300
-50
-100 250
60.0
30.0
20.0
50.0
40.0
10.0
0.0
80 mm, 100 mm, PN 40
150 mm, PN 40
3 inch, 4 inch, 300#
6 inch, 300#
3 inch, 4 inch, 6 inch, 150#
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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Dimensional drawings
SITRANS LR400, dimensions in mm (inch)
SITRANS LR400
(with temperature
extension)
Standard
Maximum flange and process temperature
versus allowable ambient temperature
Optional temperature extension
Process temperature (°C)
Ambient temperature (°C)
Earth
terminal
Connec-
tion cover
Electronics
cover
Intermediate
flange
Process
flange
Horn
antenna
Threaded
ring
SITRANS LR400 (7ML5421) SITRANS LR400
2752502252001751501251007550
25
0
0
10
20
30
40
50
60
70
400LRSITRANS
257 (10.1)
238 (9.4)
191
(7.5)
204
(8.0)
74
(2.9)
238 (9.4)
191
(7.5)
93 (3.7)
74
(2.9)
93 (3.7)
204
(8.0)
384 (15.1)
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400
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Schematics
SITRANS LR400 connections
Part number:
7ML5830-2AJ
Hand programmerAC version
Recommended torque on terminal clamping screws, 0.5 ... 0.6 Nm
Notes
•
4 ... 20 mA, PROFIBUS PA, DC input circuits, 14 ... 20 AWG, shielded copper wire•
AC input circuit, min. 14 AWG copper wire•
All field wiring must have insulation suitable for at least 250 V •
The equipment must be protected by a 15 A fuse or circuit breaker in the building installation•
DC version
Cable clamp
Earth terminal
Cable clamp
Earth terminal
Cable clamp
Earth terminal
Cable clamp
Earth terminal
SITRANS LR400
HART HART
PROFIBUS PA PROFIBUS PA
© Siemens AG 2013
Level Measurement
Continuous level measurement — Radar transmitters
SITRANS LR400 Specials
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1)
Available with no pressure rating and with General Purpose approvals only
SITRANS LR400 Specials
Article No.
3 inch/80 mm Universal Flange,
without horn or hub.
1)
PBD:
51035813
4 inch/100 mm Universal Flange,
without horn or hub.
1)
PBD:
51035814
6 inch/150 mm Universal Flange,
without horn or hub.
1)
PBD:
51035815
8 inch/200 mm Universal Flange,
without horn or hub.
1)
PBD:
51035816
Purging kit with Easy Aimer ball,
no flange, no horn.
1)
PBD:
51036110
Purging kit with Easy Aimer ball
with 4 inch/100 mm flange,
no horn.
1)
PBD:
51035810
Purging kit with Easy Aimer ball
with 6 inch/150 mm flange,
no horn.
1)
PBD:
51035811
Purging Kit with Easy Aimer ball
with 8 inch/200 mm flange,
no horn.
1)
PBD:
51035812
Short horn antenna, no emitter
supplied
PBD:
22475K1A
Long horn antenna, no emitter
supplied
PBD:
22475K2A
Short horn antenna, purged,
no emitter supplied
PBD:
22475K3A
Long horn antenna, purged,
no emitter supplied
PBD:
22475K4A
Replacement display module,
SITRANS LR400 Liquids and
Solids versions
PBD:
51035410
4" extension kit for horn antenna
with General Purpose approvals
PBD:
51035474
8" extension kit for horn antenna
with General Purpose approvals
PBD:
51035473
8" extension kit for horn antenna
for hazardous units
PBD:
51036180
SITRANS LR400 Aluminum
enclosure with AC power,
M20 cable inlet, HART
communication, and GP, CE,
and CETECOM approvals.
PBD:
51036479
SITRANS LR400 Aluminum
enclosure with AC power,
M20 cable inlet, PROFIBUS PA
communication and GP, CE,
and CETECOM approvals.
PBD:
51036480
SITRANS LR400 Aluminum
enclosure with AC power,
M20 cable inlet, HART
communication and GP, CE,
CSA, Industry Canada, FCC and
R&TTE.
PBD:
51035867
SITRANS LR400 Aluminum
enclosure with AC power,
M20 cable inlet, PROFIBUS PA
communication and GP, CE,
CSA, Industry Canada, FCC and
R&TTE.
PBD:
51035871
SITRANS LR400 Aluminum
enclosure with AC power,
M20 cable inlet, PROFIBUS PA
communication and ATEX II 1/2
GD EEx d IIC T6, CE and R&TTE
approvals.
PBD:
51035873
SITRANS LR400 Aluminum
enclosure with DC power,
M20 cable inlet, HART
communication and and GP, CE
and CETECOM approvals.
PBD:
51036481
SITRANS LR400 Aluminum
enclosure with DC power,
M20 cable inlet, PROFIBUS PA
communication and GP, CE and
CETECOM approvals.
PBD:
51036482
SITRANS LR400 Aluminum
enclosure with DC power,
M20 cable inlet, HART
communication and GP, CE,
CSA, Industry Canada, FCC and
R&TTE
PBD:
51036483
SITRANS LR400 Aluminum
enclosure with DC power,
M20 cable inlet, PROFIBUS PA
communication and GP, CE,
CSA, Industry Canada, FCC and
R&TTE.
PBD:
51036484
SITRANS LR400 Aluminum
enclosure with DC power,
M20 cable inlet, HART
communication and ATEX II 1/2
GD EEx d IIC T6, CE and R&TTE
approvals.
PBD:
51036485
SITRANS LR400 Aluminum
enclosure with DC power,
M20 cable inlet, PROFIBUS PA
communication and ATEX II 1/2
GD EEx d IIC T6, CE and R&TTE
approvals.
PBD:
51036486
SITRANS LR400 Specials
Article No.
© Siemens AG 2013
