In our series: Product lines in focus, we alternately present the most important features and characteristics of our product lines from our business areas.

In the field of level measurement technology, today's topic is our "HeavyDutyLine", the in-tank level meter for reliable results in surface or interface measurement.

Task and function

Our continuous level probes (Tank Level Instruments - TLI) are integrated in the tank, monitor the level of a liquid and transmit the signal for processing.

Special features of the series

The WEKA HeavyDutyLine features a low stray magnetic field design where the magnetic field of the float is only directed inward (to activate the electronics), but is not detectable outward. A wide range of variants allows use for a wide variety of fluids and pressure ranges.

The XM-140000EN series, for example, is dead space optimized, i.e. mounting variants can be selected that allow the float to travel almost all the way to the tank top or bottom. This makes full use of the maximum measuring range and minimizes the areas that cannot be measured (dead spaces). 

Various connection types are available for installation situations with little space. Special coatings increase corrosion resistance and reduce the risk of buildup.

Application areas

• Shipbuilding
• Oil and gas industry / petrochemistry
• Water management
• Power generation

Operating principle

The float equipped with magnets activates the electronics located in the switch tube. The output signal supplied by the voltage divider can be used directly. Otherwise converters are available which convert the voltage into a 4...20mA signal (current sink).

Special suitability in the field of application

Mainly the HeavyDutyLine is used on submarines for the detection of various liquid levels (drinking water, seawater, oil, diesel, fecal matter, ...). The special voltage part electronics is extremely robust and meets military requirements. With shock strengths of up to 400 g, the mechanics are also optimally developed for the application.

The multi-part designs offer the possibility to completely detect even bulky tanks. Pressure-resistant cables and connectors connect the sensors in the tank, providing an uninterrupted signal.

Reliability and longevity are particularly important, as the sensors are often difficult to access and cannot be maintained or replaced for years.

Variable features within the product line

• Switch tube
• Float
• Mounting variant

Available versions

• XM-36000E (12.7 mm resolution, 40 g)
• XM-140000E (5 mm resolution, 400 g)
• XM-140000EN (5 mm resolution, 400 g, dead space)

Available accessories

For use in hazardous areas, associated electrical equipment must be used to limit the energy entering the hazardous area. For this purpose WEKA offers transmitters that also meet further environmental requirements of the applications.

Available spare parts

The advantages of the product include its long service life, which is designed to last for decades, and the low maintenance requirements. There are practically no wear parts - yet the individual probes, cables and transmitters can be reordered.

Current market approvals

The requirements in the submarine market are on such a high level that no standard covers them. In addition to the usual requirements of the European Union (CE) with regard to the Low Voltage Directive and EMC, applications in European explosion protection (ATEX) can also be served as simple electrical equipment.

Current certificates

• Declarations of conformity / certificates according to CE
• Declarations of conformity / certificates according to ATEX
• Various references for submarine use

Additional information about this product line

Many years of experience in this field enable us to make customer-specific modifications in compliance with all otherwise given requirements and prerequisites.

For more information on our HeavyDutyLine, please visit our product section, or contact our sales team, we will be happy to help you.