Brand: ABB

ABB Compact ultrasonic level transmitter LST300

Name: ABB LST300 Compact Ultrasonic Level Transmitter – Datasheet
Brand: ABB

Description

Overview

The ABB LST300 is a compact ultrasonic level transmitter designed as a space-saving solution for accurate, non-contact level measurement in both liquids and solids. Offered in two sensor ranges – C06 covering 0.25 to 6.00 m and C10 covering 0.35 to 10.00 m – the LST300 is purpose-built for tanks, silos, sumps, and open channels where installation space is limited but measurement performance cannot be compromised.

Seven Star LLC supplies the ABB LST300 to water treatment, chemical processing, and food production operators across Oman and the wider GCC as an experienced supply partner for genuine ABB instrumentation.Seven Star LLC supplies this item on request with the manufacturer documentation, and availability and lead time are confirmed at quotation.

Operating Principle

The LST300 sends acoustic pulses to the surface of the medium and measures the time it takes for the echo to return, converting that time-of-flight into a level reading. This non-contact measurement method ensures accuracy of ±2 mm or 0.20% of full span (whichever is larger), with repeatability rated at ±0.20% of the measurement range, without interference from dust, vapors, or temperature variations that would degrade a contact-based sensor’s performance.

An intelligent echo-processing algorithm enhances reliability in difficult applications, whether monitoring liquid levels in chemical tanks or bulk solids in storage silos, delivering consistent and dependable results despite the sensor’s smaller physical footprint compared to ABB’s longer-range LST400. The C10 sensor’s market-leading 5° beam angle (versus 7° on the C06) focuses more of the acoustic energy directly at the target surface, reducing false echoes from tank walls, ladders, or internal structures on taller or narrower vessels.

Engineering Design of the ABB LST300

Built for harsh industrial conditions, the LST300 features a rugged enclosure rated IP66/67/68 and NEMA 4X, with full submersion capability to 2 metres for 24 hours, and is resistant to corrosion and ingress. Its compact form factor allows easy integration into existing installations, reducing both installation time and space requirements – a key advantage where retrofit projects have limited mounting space for a level instrument. The transmitter is powered from 16 to 42 V DC (limited to 30 V DC maximum for intrinsically safe applications) with reversed-polarity protection, operates across a wide −40°C to 85°C temperature range, and is rated for process pressures from −0.25 to 3.00 bar (−4 to 44 psi).

Process connection is via a universal 38 mm (1½ inch) or 51 mm (2 inch) thread compatible with both NPT and BSP standards, simplifying retrofit into existing tank nozzles regardless of the original fitting standard. The transmitter supports both analog 4–20 mA and HART digital communication, offering full compatibility with modern control systems, and its intuitive setup interface and diagnostic features enable quick configuration and ongoing monitoring, minimizing downtime and maintenance.

Key Features

Compact, space-saving ultrasonic level transmitter in two range options: C06 (0.25–6.00 m) and C10 (0.35–10.00 m)
Accuracy of ±2 mm or 0.20% of full span, whichever is larger, with ±0.20% repeatability
Non-contact measurement, unaffected by dust, vapor, or temperature variation
Intelligent echo processing algorithm for difficult applications
Market-leading 5° beam angle on the C10 sensor for improved target focus
IP66/67/68 and NEMA 4X-rated rugged enclosure, submersible to 2 m for 24 hours
Wide power input (16–42 V DC) and operating temperature range (−40°C to 85°C)
Universal 38 mm or 51 mm process thread compatible with NPT and BSP
Analog 4–20 mA and HART digital communication
Suitable for both liquids and bulk solids, with easy retrofit integration into existing installations

Industrial Applications

The LST300 is ideal for tanks, silos, sumps, and open channels where space is limited, across chemical tanks and bulk solids storage silos in water treatment, chemical processing, and food production applications – particularly retrofit projects where a compact form factor and universal thread connection simplify installation without re-engineering the tank nozzle.

Across Oman’s water treatment and food processing sectors, and throughout the wider GCC, Seven Star LLC supplies the LST300 as a trusted supplier of ABB products to facilities in Muscat, Sohar, and Salalah that require dependable, factory-genuine compact ultrasonic level transmitters with full local support, correctly sized between the C06 and C10 range options to the customer’s actual tank height.

Technical Specifications

Key technical specifications for the ABB LST300 compact ultrasonic level transmitter are summarized below; contact Seven Star LLC for the full data sheet and model-specific ordering information.

Parameter	Specification
Model	ABB LST300
Measurement Type	Ultrasonic, non-contact, compact
Measurement Range	0.25–6.00 m (C06) or 0.35–10.00 m (C10)
Accuracy	±2 mm or 0.20% of full span (larger of the two)
Repeatability	±0.20% of measurement range
Beam Angle	7° (C06) or 5° (C10)
Media	Liquids and solids
Power Supply	16–42 V DC (30 V DC max for IS applications)
Operating Temperature	−40°C to 85°C
Pressure Range	−0.25 to 3.00 bar (−4 to 44 psi)
Process Connection	38 mm (1½ in.) or 51 mm (2 in.) universal thread, NPT/BSP
Enclosure Rating	IP66/67/68, NEMA 4X; submersible to 2 m for 24 h
Outputs	4–20 mA analog with HART digital communication

Request a Quote for ABB Compact ultrasonic level transmitter LST300

Contact Seven Star LLC for a quotation on the ABB LST300 compact ultrasonic level transmitter, with manufacturer documentation and local support across Oman and the GCC.

Where the ABB LST300 is used

Tanks
Silos
Sumps
Open channels
Water treatment, chemical and food production

Selection checklist for the ABB LST300

Liquid or solid medium
Sensor range
Vessel height and width
Internal structures
Output needed
Mounting connection
Cable length
Installation space

Installation, commissioning and maintenance notes for the ABB LST300

Mount the transmitter above the medium with a clear view of the surface and away from walls and internal structures. Wire the output and set the empty and full levels. Check the sensor face and the readings at regular intervals.

Requesting a quotation for the ABB LST300

Please send the vessel height, the medium and the mounting details. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

LST300 transmitter type

It is a compact ultrasonic level transmitter.

LST300 maker

It is made by ABB.

LST300 measurement

It measures level without contact in liquids and solids.

LST300 space saving

It is designed as a space-saving solution.

LST300 ranges

It comes in two sensor ranges, C06 and C10.

LST300 echo principle

It sends acoustic pulses to the surface of the medium and measures the time for the echo to return.

LST300 time of flight

The time of flight is converted into a level reading.

LST300 non-contact

A non-contact method is not degraded by the wear that hits contact sensors.

LST300 algorithm

An intelligent echo-processing algorithm improves reliability in difficult applications.

LST300 liquids and solids

It monitors liquid levels in chemical tanks and bulk solids in storage silos.

LST300 footprint

Its physical footprint is smaller than that of the longer-range LST400.

LST300 beam angle

The C10 sensor has a narrower beam angle than the C06.

LST300 false echoes

A narrow beam puts more acoustic energy on the target surface and reduces false echoes from walls, ladders and internal structures.

LST300 tall vessels

This helps on taller or narrower vessels.

LST300 enclosure

The enclosure is rugged for harsh industrial conditions.

LST300 water

Water treatment operators use it on tanks and open channels.

LST300 food

Food production operators use it where space is limited.

LST300 documentation

Manufacturer documentation is supplied with a quotation.

LST300 customers

Seven Star LLC serves operators across Muscat, Sohar and Salalah.

LST300 support

Seven Star LLC gives local technical support with selection.

Level records for the ABB LST300

Record the empty and full settings, the readings and the date of each check.

Choosing the right ABB LST300 sensor range

Choose the C06 or C10 range from the vessel height and the installation.

Datasheets & Documents

Datasheet ABB-Compact ultrasonic level transmitter LST300 Datasheet Download

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About brand

ABB is the Swiss-Swedish engineering group for electrification and automation: low voltage drives, motors, circuit breakers and motor control, process instruments and analysers, control systems and robots. It was formed on 5 January 1988 by the merger of two older companies. ASEA was founded in Västerås, Sweden, in 1883 by Ludvig Fredholm to make electric lighting and generators. BBC Brown Boveri was founded in Baden near Zurich in 1891 by Charles E. L. Brown and Walter Boveri. ABB Ltd is incorporated in Switzerland, headquartered in Zurich and listed on the SIX Swiss Exchange and Nasdaq Stockholm.

ABB company profile

Formed	5 January 1988, by the merger of ASEA (Sweden) and BBC Brown Boveri (Switzerland), each holding 50%
ASEA	Founded 1883 in Västerås, Sweden, by Ludvig Fredholm; first products electric lighting and generators
Brown, Boveri & Cie	Founded 1891 in Baden, Switzerland, by Charles E. L. Brown and Walter Boveri
Headquarters	Zurich, Switzerland; ABB Ltd became the group holding company in 1999
Ownership	Public company listed on SIX Swiss Exchange and Nasdaq Stockholm
Brands in the group	Baldor (US motors, acquired 2011), B&R (machine automation, acquired 2017), K-TEK level instruments, Endura and Navigator analysers, SACE breakers
Product families	Low and medium voltage drives (ACS series), motors, SACE Tmax and Emax breakers, contactors and soft starters, flow, pressure, temperature and level instruments, liquid and gas analysers, Contrac actuators, AC500 PLCs, Ability System 800xA and S800 I/O, protection relays, robots

Milestones

1883: ASEA is founded in Västerås, Sweden.
1891: Brown, Boveri & Cie is founded in Baden, Switzerland.
1987–1988: The merger is announced on 10 August 1987; ABB Asea Brown Boveri starts operating on 5 January 1988.
1999: ABB Ltd, incorporated in Switzerland, becomes the single holding company of the group.
2011 and 2017: Baldor Electric and B&R join ABB.
2020: ABB sells its power grids business to Hitachi, focusing on electrification, motion, process and machine automation.

Choosing an ABB drive

ABB's ACS drive codes are easy to read once you know the pattern. In ACS580-01-046A-4, "ACS580" is the drive family, "01" means a wall-mounted single drive, "046A" is the rated output current (about 46 A) and "-4" means a 380–480 V supply. The family is chosen by application: ACS355 for compact machinery, ACS310 for simple pumps and fans, ACS580 as the general-purpose drive, ACQ580 for water and wastewater with pump functions such as pipe fill and dry-run protection, and ACS880 for heavy industrial duty with direct torque control. Size the drive on the motor's full-load current, not only its kW rating, and allow derating for the high ambient temperatures common in Gulf electrical rooms.

Where ABB products are used

In Oman and the GCC, ABB drives and motors run pumps, fans and compressors in water and wastewater plants, district cooling, oil and gas and industry. ABB flowmeters, level instruments and analysers are used in water utilities, power and desalination plants and refineries, and SACE breakers protect switchboards in buildings and plants.

ABB products we list

Family	Examples
AC drives	ACS580, ACS580-01-046A-4, ACQ580, ACS355, ACS310, ACS880-01, FEN-31 encoder module
Breakers, motor control and protection	SACE Tmax XT, XT3N 250, SACE Emax 2, AF09 contactor, PSR soft starter, REM615 relay
Flow measurement	ProcessMaster FEP300, AquaMaster4, CoriolisMaster FCB430, VortexMaster FSV430, SwirlMaster FSS430, OriMaster FPD500
Pressure, temperature and level	266DRH, 267CS multivariable, TTH300, K-TEK AT100, LMT200, MT5000 GWR, KM26 gauge
Analysers	Endura AZ20, AK100 hydrogen purity, Navigator AW641 silica, AW402 chlorine, AWT210
Control systems and actuators	AC500, AC500-S, S800 AI810, AC 800F SA 811F, Contrac RSD50, Contrac RHD4000

Ordering ABB products: what we need

Send the full type code from the nameplate (for example ACS580-01-046A-4 or 266DSH...) and, for spare parts, the ABB ID number (such as 3BSE008508R1 or 1SBL176001R3010). For drives, add the motor power and current and any option codes (+...). For instruments, send the complete order code, which sets range, materials and approvals. Baldor motors are listed on their own brand page.

Facts checked against ABB company filings and published histories of ASEA and Brown, Boveri & Cie, October 2026.

FAQ

Questions about the ABB Compact ultrasonic level transmitter LST300

Answers from our engineering team on installation, compatibility and integration.

01How does the ABB LST300 differ from the LST400?

The LST300 is a compact, space-saving model designed for installations where mounting space is limited, while the LST400 is ABB's longer-range ultrasonic model measuring up to 15 meters.

02Is the LST300 affected by dust or vapor in the tank?

No. Its non-contact ultrasonic measurement method ensures exceptional accuracy without interference from dust, vapors, or temperature variations.

03What communication protocols does the LST300 support?

The LST300 supports both analog and HART digital communication, offering full compatibility with modern control systems.

04What media can the ABB LST300 measure?

It is suitable for both liquid levels in chemical tanks and bulk solids in storage silos.

05Is Seven Star LLC an experienced supply partner for ABB products?

Yes. Seven Star LLC supplies ABB products to customers in Oman and the GCC and can provide the manufacturer documentation and technical support on request.