Continuous level measurement
Overview
Ultrasonic / Ultrasonic transmitters / SITRANS LU150
Continuous level measurement
Ultrasonic / Ultrasonic transmitters / SITRANS LU150
4/207
Overview
SITRANS LU150 is a short-range integrated ultrasonic level transmit
ter. This general purpose, 2-wire, 4 to 20 mA loop powered trans
mitter is ideal for liquids, slurries, and bulk materials in open or
closed vessels to 5m (16.4ft).
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 LU150 is easy to install and maintain, and can be quickly
removed for cleaning as required by the food, beverage and phar
maceutical industries.
The reliability of the level data is based on the Sonic Intelligence
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 LU150 mounting
Siemens FI01 · 2023
Level Measurement
© Siemens AG 2023
Continuous level measurement
Ultrasonic / Ultrasonic transmitters / SITRANS LU150
4/208
Selection and ordering data
Article No.
SITRANS LU150 Ultrasonic level transmitter
Continuous, non-contact, 5m (16.4ft) range. Monitors level in
liquids and slurries. Basic level performance.
7ML5201-
0 ● ● 0
Click on the Article No. for the online configuration in the PIA Life Cycle
Portal.
Transducer/Process connection (PVDF)
PVDFcopolymer, 2"NPT [(Taper),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/processinstrumentation/docu
mentation
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
Siemens FI01 · 2023
Level Measurement
© Siemens AG 2023
Continuous level measurement
Ultrasonic / Ultrasonic transmitters / SITRANS LU150
4/209
Technical specifications
SITRANS LU150
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
C
CSA
US,
CE, UKCA
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 -30 ... +60 °C (-22 ... +140 °F)
•
Metallic mounting -20 ... +60 °C (-4 ... +140 °F)
Storage temperature
•
Standard -30 ... +60 °C (-22 ... +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
LU150
Optional
flange
adapter
The SITRANS LU150 can be fitted with the optional 75 (3)
flange adapter for mating to 3" ANSI, DIN 65 PN10 and
JIS 10K3B flanges.
SITRANS LU150, Flange Adapter
SITRANS LU150 optional flange adapter, dimensions in mm (inch)
Siemens FI01 · 2023
Level Measurement
© Siemens AG 2023
Continuous level measurement
Ultrasonic / Ultrasonic transmitters / SITRANS LU150
4/210
Dimensional drawings
Electronics
Mounting Thread
Sensor
SITRANS LU150, 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 LU150, dimensions in mm (inch)
Siemens FI01 · 2023
Level Measurement
© Siemens AG 2023
Continuous level measurement
Ultrasonic / Ultrasonic transmitters / SITRANS LU150
4/211
Dimensional drawings (continued)
Electronics
Mounting
thread
Sensor
SITRANS LU150, Sanitary
239.2 (9.4)
73.0
(2.9)
SITRANS LU150, 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
Threaded and Sanitary models
max
V Supply
+–+
–
1 2
–
SITRANS
LU150
SITRANS LU150 connections
Siemens FI01 · 2023
Level Measurement
© Siemens AG 2023