SITRANS LH300

Key Features

• Compact design for easy deployment in tight installation spaces

• Simple mounting with included accessories: cable junction box and mounting clamp

• High accuracy with a low error margin of ±0.15% of full span

• IP68 protection rating, ensuring reliable operation under continuous submersion

• Multiple housing material options:

  • PPE: lightweight and economical

  • Stainless steel: robust and impact-resistant

  • ETFE: chemically resistant, suitable for seawater or corrosive solutions

Typical Applications

• Shipbuilding: level measurement in ballast and storage tanks

• Water supply and wastewater treatment systems

• Drinking water treatment facilities

• Boreholes, open tanks, and non-pressurized vessels

• Desalination plants handling seawater environments

Design and Construction

• Employs a ceramic sensor with integrated Wheatstone bridge for high accuracy

• Sensor and signal processing electronics are integrated within a stainless steel housing

• Signal cable features a vented tube with moisture filter, allowing atmospheric pressure compensation and preventing condensation

• Sensor membrane is protected by a dedicated impact- and debris-resistant cover

• Equipped with full-range temperature compensation to maintain accuracy across varying ambient conditions

Mode of Operation

• The hydrostatic pressure from the liquid column acts on the sensor membrane and is transmitted to the Wheatstone bridge within the ceramic sensing element

• The difference between hydrostatic and atmospheric pressure is balanced through the vented tube integrated in the cable

• The resulting voltage signal is amplified and converted into a standard 4–20 mA current output

• Grounding cable is connected to the outer housing for electrical safety and noise suppression