Level Measurement

Level measurement of liquid media based on the float principle

WEKA has specialised in recording the level of liquid media in tanks whose content cannot be monitored on a directly visual basis by the operator.

Whether on submarines, on offshore platforms, in chemistry or in research, high pressures and/or high temperatures are increasingly being worked with, as are media that are toxic or high-purity. In all cases, the opening of the containers is undesired or not possible, yet the level must be recorded securely and continuously.
For this purpose, WEKA has made use of the principle of magnetic transmission. In a float that floats on the surface or a separating layer, magnets are integrated whose position can be displayed electrically or visually. The magnets are so strong and stable that several millimetres to centimetres of distance can be bridged. This distance means large wall thicknesses of the float chambers and thus safe use in high pressures of the systems.

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Connection type
Application
Resolution
Fixation
Coating
Density of liquid
EAC approval
Ex approval
Counter plug
Accuracy
Halogen-free
Cable outlet
Contacts
Mounting of converter
max. indication length
Application of media
min. indication length
Nominal pressure PN
Process connection
Pipe diameter
Shipbuilding approval
Shock resistance
Welding approval
Float material
Service flange
Signal output (1)
Temperature Range
Death band
Interface measurement
Ozone / UV resistant
Material

Bypass - Visual Level Indicators (VLI)

Three functions combined in one instrument

Magnetic visual level indicators combine up to three functions in one device: level display, switch and transmitter. The display, which is readable across large distances, does not use any energy and functions inevitably owing to the physical law of fluids in communicating vessels.

WEKA magnetic visual level indicators impress thanks to their compact design and their wide range of applications.

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EconomyLine

≤ 6bar
-40 … +100°C
≥ 0.60g/cm3
≤ 600cSt

SmartLine

≤ 50bar
-80 … +250°C
≥ 0.60g/cm3
​≤ 150cSt

StandardLine

≤ 50bar
-100 … +400°C
≥ 0.55g/cm3
​≤ 600cSt

HighPressureLine

≤ 200bar
-80 … +400°C
≥ 0.70g/cm3
​≤ 600cSt

PetroLine

≤ 148bar
-80 … +400°C
≥ 0.47g/cm3
​≤ 600cSt

LowDensityLine

≤ 50bar
-196 … +400°C
≥ 0.27g/cm3
​≤ 600cSt

PlasticLine

≤ 10bar
-20 … +140°C
≥ 0.75g/cm3
​≤ 600cSt

Special VLI

≤ 630bar
-100 … +400°C
≥ 0.37g/cm3
​≤ 600cSt

Accessories & spare parts

Top of Tank - Visual Level Indicators (ToT VLI)

All advantages top of tank​

Instead of on the side of the tank, top of tank magnetic visual level indicators are installed on top of the tank.

The magnet is not located in the float directly, but in a magnetic carrier found above the top of the tank that is connected to the float by a connecting pipe. The float system moves in a guide pipe and the fill level is displayed above the tank, as in the bypass visual level indicators. Thus, all the advantages of the magnetic visual level indicators are available.

Magnetic visual level indicators combine up to three functions in one device: level display, switch and transmitter. The display, which can be read across large distances, works without energy. The float records the fill level directly and inevitably and displays it without further calculations.

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Top of Tank Line - SS


≤ 50bar
-80 … +150°C
≥ 0.55g/cm3
​≤ 600cSt

Top of Tank Line - Plastic

≤ 10bar
-20 … +140°C
≥ 0.87g/cm3
​≤ 600cSt

Top of Tank Line - Special

≤ 630bar
-80 … +400°C
≥ 0.30g/cm3
​≤ 600cSt

Accessories & spare parts

In-Tank - Tank Level Indicators (TLI)

WEKA TLI, continuous level measurement in the tank, as an ideal complement to WEKA magnetic visual level indicators

The continuous level sensors from WEKA are the ideal complement to the WEKA bypass system wherever an outer installation is not possible. Fully electronic and, apart from the float, without moving parts, they deliver reliable level values for remote indication. The XM types work according to the voltage divider principle and deliver output voltages between zero and the supply voltage along the lines of the float status. Most types are also available as an XT version, where an integrated converter changes the voltage signal into a 4…20mA signal (current sink).

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IndustryLine

≤ 20bar
-20 … +150°C
≥ 0.60g/cm3

HeavyDutyLine

≤ 140bar
-20 … +80°C
≥ 0.50g/cm3

Level switches

≤ 50bar
-20 … +80°C
≥ 0.60g/cm3

HeavyDuty cables

≤ 90bar
0 … +85°C
 

Accessories & spare parts