Continuous level measurement
Overview
Ultrasonic / Ultrasonic transmitters / SITRANS LU180
Ultrasonic / Ultrasonic transmitters / SITRANS LU180
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Overview
SITRANS LU180 is a short-range integrated ultrasonic level transmit
ter. It is intrinsically safe (ATEX, UKEX, CSA, FM, IECEx, NEPSI), 2
wire, 4 to 20 mA loop-powered, ideal for liquids, slurries, and bulk
materials in open or closed vessels to 5meters (16.4feet).
Benefits
•
Easy to install, program, and maintain
•
Accurate and reliable
•
Sanitary models available
•
Patented Sonic Intelligence echo processing
•
Integral temperature compensation
Application
The transducer is available in PVDF copolymer, making the device
suitable for use in a wide variety of applications. SITRANSLU180 is
easy to install and maintain, and can be quickly removed for clean
ing as required by the food, beverage and pharmaceutical indus
tries. The reliability of the level data is based on the Sonic Intelli
gence echo processing algorithms. A filter discriminates between
the true echo and false echoes from acoustic or electrical noises and
agitator blades in motion. The ultrasonic pulse propagation time to
the material and back is temperature compensated and converted
into distance for display, analog output.
•
Key Applications: chemical storage vessels, filter beds, mud pits,
liquid storage vessels, food applications
Configuration
12º
Pipe
Rungs
Seams
Fill
Beam
Angle
SITRANS LU180 mounting
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Continuous level measurement
Level Measurement
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Selection and ordering data
Article No.
SITRANSLU180 Ultrasonic level transmitter
Continuous, non-contact, 5m (16.4ft) range. Monitors level
in liquids and slurries. Basic level performance for intrinsically
safe applications.
7ML5202-
0 ● ● 0
Click on the Article No. for the online configuration in the PIA Life Cycle
Portal.
Transducer/Process connection
PVDFcopolymer, 2"NPT [(Taper),ANSI/ASMEB1.20.1] E
PVDFcopolymer, R2" [(BSPT),EN10226] F
PVDFcopolymer, G2" [(BSPP),ENISO228-1] G
PVDFcopolymer, 4"Sanitarymounting J
Cable inlet
M20x1.5 [GeneralPurposecablegland -20...+60°C (-4...+140°F)
included]
B
1/2"NPT stainlesssteelentry (nocableglandincluded) C
Selection and Ordering data Ordercode
Further designs
Please add "-Z" to Article No. and specify Order code(s).
Stainlesssteeltag [13x45mm (0.5x1.75inch)]: Meas
uring-point number/identification (max.20characters)
specify in plain text
Y15
Declaration of Compliance, EN 10204, 2.1, Delivery meets
Order Requirements
C11
Accessories ArticleNo.
Operating Instructions
All literature is available to download for free, in a range
of languages, at http://www.siemens.com/processinstru
mentation/documentation.
Accessories
Tag, stainlesssteel, 12x45mm (0.47x1.77inch), one
text line
7ML1930-1AC
Universal box bracket mounting kit
7ML1830-1BK
Sanitary 4"mounting clamp
7ML1830-1BR
3"ASME, DN65 PN10, JIS10K3BETFE Flange adapter for
2"NPT
7ML1830-1BT
3"ASME, DN65 PN10, JIS10K3BETFE Flange adapter for
2"BSPT
7ML1830-1BU
2"BSP nylonplasticlocknut
7ML1830-1DQ
2"NPT nylonplasticlocknut
7ML1830-1DT
CableGland, GeneralPurpose -20...+60°C (-4...+140°F)
A5E34457564
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Technical specifications
SITRANS LU180
Mode of operation
Measuring principle Ultrasonic level measurement
Input
Measuring range 0.25 ... 5 m (0.8 ... 16.4 ft)
Frequency 54 kHz
Output
mA 4 ... 20 mA
•
Span Proportional/ inversely proportional
•
Max. load 600 Ω in the loop at 24 V DC
Power supply
Supply voltage 12 ... 30 V DC, 0.1 A surge
Max. power consumption 0.75 W (25 mA at 24 V DC)
Certificates and approvals CSAIS/ ClassI,II,III, Div.1,
Groups:A,B,C,D,E,F,G T4
FMIS/ ClassI,II,III, Div.1,
Groups:A,B,C,D,E,F,G T4
ATEXII1GExiaIICT4Ga, Ta=
‑40°Cto+60°C;
UKEXII1GExiaIICT4Ga, Ta=
‑40°Cto+60°C;
IECExExiaIICT4Ga, Ta= ‑40 °Cto+60°C;
NEPSIExiaIICT4Ga
Accuracy
Error in measurement 0.25 % of measuring range (in air)
Resolution 3 mm (0.125 inch)
Temperature compensation Built in
Echo processing Sonic Intelligence
Rated operation conditions
Beam angle 12°
Ambient temperature
•
Standard -40 ... +60 °C (-40 ... +140 °F)
•
Metallic mounting -20 ... +60 °C (-4 ... +140 °F)
Storage temperature
•
Standard -40 ... +60 °C (-40 ... +140 °F)
•
Metallic mounting -20 ... +60 °C (-4 ... +140 °F)
Max. static operating pressure Normal atmospheric pressure
Design
Weight 1.3 kg (2.9 lb)
Material
•
Electronics enclosure PBT
•
Transducer PVDF copolymer
Degree of protection IP68 / NEMA 6 / TYPE 6
Process connection
•
2" NPT [(Taper), ASME B1.20.1]
•
R 2" [(BSPT), EN 10226]
•
G 2" [(BSPP), EN ISO 228-1]
•
4" sanitary
Flange adapter 3" Universal (fits DN 65, PN 10 and 3"ASME)
Cable inlet 1 inlet for M20, optional 1/2" NPT
Options
SITRANS
LU180
Optional
flange
adapter
The SITRANS LU180 can be fitted with the optional 75 (3)
flange adapter for mating to 3" ASME, DIN 65 PN10 and
JIS 10K3B flanges.
SITRANS LU180, Flange Adapter
SITRANS LU180 optional flange adapter, dimensions in mm (inch)
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Dimensional drawings
Electronics
Mounting Thread
Sensor
SITRANS LU180, Threaded
160.6 (6.3)
234.6 (9.2)
91.5
(3.6)
122.7 (4.8)
104.5 (4.1)
53 (2.0)
87
(3.4)
83.3
(3.2)
SITRANS LU180, dimensions in mm (inch)
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Dimensional drawings (continued)
Electronics
Mounting
thread
SITRANS LU180, Sanitary
Sensor
239.2 (9.4)
73.0
(2.9)
SITRANS LU180, dimensions in mm (inch)
Circuit diagrams
12 ... 30 V DC
Loop
instrumentation
R
Units
LOE/faultOperation
status
'4' key
'20' key
Program
mode
Alphanumeric
Display
SITRANS LU180, Threaded and sanitary models
max
V Supply
+–+
–
1 2
–
SITRANS
LU180
SITRANS LU180 connections
Siemens FI01 · 2023
Level Measurement
© Siemens AG 2023