Level instruments
Continuous level measurement - Ultrasonic controllers
SITRANS LU01 and LU02
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Siemens FI 01 · 2010
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Technical specifications
Mode of operation
• Measuring principle Ultrasonic level measurement
• Measuring range
0.3 to 60 m (1 to 200 ft)
• Measuring points
SITRANS LU01: Max. one point;
SITRANS LU02 Max. two points
Output signal
• Ultrasonic transducer Echomax series, ST-H transduc-
ers
•Relays
4 SPDT Form C relays, rated at
5 A at 250 V AC, resistive load
• mA output
0/4 to 20 mA, optically isolated
-Max. load
750 , isolated, 30 V
- Resolution
0.1 % of range
-Outputs
SITRANS LU01:
Max. one mA output
SITRANS LU02:
Max. two mA outputs
Accuracy
• Error in measurement 0.25% of range or 6 mm (0.24"),
whichever is greater
• Resolution
0.1% of measuring range or 2 mm
(0.08"), whichever is greater
• Temperature compensation
-50 to +150 ºC (-58 to +302 ºF)
• Integral temperature sensor
• External TS-3 temperature
sensor (optional)
• Programmable fixed
temperature
Rated operating conditions
Ambient conditions
Ambient temperature for enclosure -20 to +50 ºC (-4 to +122 ºF)
Design
Weight 2.7 kg (6 lbs)
Material (enclosure)
Polycarbonate
Degree of protection (wall mount)
IP65
Electrical connection
• Ultrasonic transducer cable exten-
sion
RG62-A/U coaxial cable with low
capacitance
• mA output signal
2-core copper conductor, twisted,
shielded, 0.5 to 0.75 mm²
(22 to 18 AWG), Belden
®
8760 or
equivalent is acceptable
• Electrical connection and relay
connection
Copper conductor according to
local requirements,
rated 250 V
5 A
• Synchronization
Up to 16 LU01/LU02 units can be
synchronized together
Power supply
AC model 100/115/200/230 V AC 15%,
50/60 Hz, 31 VA
DC model
18 to 30 V DC, 25 W
Displays and controls
51 x 127 mm (2 x 5") graphics
LCD with backlighting
•Memory
EEPROM (non-volatile), no
backup battery required
• Programming
Using removable programmer
(ordered separately) or
Dolphin Plus (option)
Certificates and approvals
CE, CSA
US/C
, FM, ATEX II 3D
Lloyd's register of Shipping
(Categories ENV1, ENV2, ENV3
and ENV5)
Options
• External temperature sensor TS-3
• Communications
• SmartLinx: protocol-specific
modules as interface for popular
industrial fieldbus systems
• Dolphin Plus: Siemens
Windows
®
-compatible interface
and ComVerter link (infrared)
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