Solutions for Industries and Automation
ABB Measurement and Analytics - Quad Industry GmbH

LST200 – ABB Ultrasonic level transmitter

LST200Level measurement is a key requirement in many industries where accurate data on liquid levels is needed for purposes ranging from managing storage through to reporting. In water and wastewater treatment applications, where dozens of level devices may be used, a product that offers simple commissioning, reliable operation, fast delivery and easy maintenance offers tremendous customer value.

Developed in conjunction with our customers and drawing on ABB’s extensive experience in level measurement, the LST200 ultrasonic level transmitter offers a simple, smart and reliable level measurement solution. Featuring a modular design, the LST200 utilizes the latest developments in digital sensing technology, including built-in smart chip and an interface for upgrading with future modern data acquisition methods such as NB-IoT, offering the full benefits of digitalization for improved measurement and sharing of data.


Easy to use
• Easy setup menu and clear backlight for easy configuration
• Easy installation, maintenance and upgrade with modular design

Smart and reliable
• Compact transmitter with real-time echo waveform display and diagnostic messages
• Reliable accuracy with temperature compensation (better than ±3mm or 0.25% of full span)
• Reliable and smart algorithm with noise filtering for challenging applications
• Reliable protection grade IP66/IP68 which is typical for water and wastewater industry
• Reliable electromagnetic compatibility (IEC CISPR standard) proved by independent laboratory testing

• Measurement range
0.35 to 8.00 m (13.78 to 314.96 in)
Operating conditions could attenuate the ultrasound, which may shorten the measurement range. Consult with ABB for applications involving bulk material, heavy vapor or dust, strong turbulence or foam.
• Beam angle
(@ -3 dB, full angle) : 10°
• Accuracy and Repeatability
±3 mm or 0.25% of full span, whichever is larger
Accuracy and stability are further ensured by algorithm including temperature compensation, GAP regulator and noise filter.
• Resolution
1 mm
• Update time
2 s

Electrical Data
• Terminals
Max. cable cross section:  1.5 mm2 (AWG 16)
• Power supply
LST200-Basic: 15 to 30 VDC.
LST200-LCD: 19 to 30 VDC.
Ripple: Maximum 5 %
• Power consumption
60mW to 600mW
• Analog output
Two-Wire output: 4 to 20 mA related to level/distance/volume/flow, full compensation for temperature effects
• Integrated LCD display (Optional)
Blue backlight, 6 mm height display with percentage bargraph
Simplified two-button programming with easy set up menu enables fast configuration
Real-time waveform
Diagnostics message
Totalized and actual flow indication
Language: English and Chinese

Mechanical Data
• Housing and sensor enclosure: PC (Polycarbonate)
Note: The chemical compatibility of the sensors must be checked
before installation.
• Dimensions
90 × 81 × 209 mm (3.56 × 3.19 × 8.24 in)
• Weight
680 g
• Cable entry
M20 × 1.5 threaded bore for cable gland, directly on housing
• Process xonnection
M56x3.0, length 35mm

Environmental Data
• Electromagnetic compatibility (EMC)
· IEC 61326-1 Table 2
· CISPR Class B
• Protect IP
IP66/67 according to EN 60529
IP68-rated up to 2 meters for 24 hours at room temperature
• Temperature
-30 to 60 °C (-22 to 140 ℉) , according to EN 60068-2-14
-20 to 60 °C (-4 to 140 ℉) for display
• Humidity
Relative humidity: up to 100 %
• Sensor Pressure
Measurement functional from -4 to 44 psi
(-0.25 to 3.0 bar)
• Vibration resistance
Random: according to EN 60068-2-64
Shock: IEC 60068-2-27
• Climate class
IEC 60068-2-38 Test Z/AD


Catalog and Questionnaire List

DS_LST200-EN Rev.A.pdfData sheet – LST200 | Ultrasonic level transmitter