Online help for LVL-R-5

General product information

The LVL-R-5 is a compact, portable sensor for measuring the water level of fresh, dirty or grey water. The measurement is carried out using radar. Thanks to the internal battery and to the data transmission via local radio connection, the device works independently and thereforeThe ultra low power technology allows for a long battery life time (up to 10 years) with both short measurement intervals and high resolution.

Product specifications:

  • ATEX certified for zone 1
  • High resolution
  • Large measurment range
  • Short measurment interval
  • Compact dimensions
  • Up to 10 years battery life due to ultra low power technology
  • Data transmission via local radio connection
  • Very low commissioning and operating costs
  • No cabling required

Fields of application:

  • Sewage systems and industrial plants
  • Municipal water and wastewater systems

This online help is valid from:

  • Firmware version: 01v005
  • Product revision: 1.0

Frequently asked questions (FAQs)

The LVL-R-5 does not have a special transport mode. I.e. it is always ready for operation and does not have to be activated.

The zero point is located at the level of the contact surface of the process connection. Measure the installation height from this reference plane. The red line in the illustration marks the zero point.

This method is only suitable for empty channels.

If the laser beam hits a water surface, it cannot be guaranteed that the value displayed is actually the distance to the surface. Depending on the turbidity of the water, it may also be the distance to the bottom or a value in between. Even if the laser distance meter correctly displays the distance to the surface, the level must still be added to determine the mounting height.

Using the optional accessory "Laser meter adapter (301492)", a laser distance meter can be attached to the bracket of the sensor recess or inserted into the sensor recess instead of the LVL-R-5 . The distance to the bottom of the channel indicated by the laser distance meter thus corresponds to the mounting height.

The following laser distance meters are compatible with the adapter:

  • Bosch PRO GLM 50-27 CG
  • Bosch PRO GLM 50-27 C
  • Bosch PRO GLM 50-25 G
  • Bosch PRO GLM 50-23 G
  • Bosch PRO GLM 50-22
  • Bosch PRO GLM 40-31

1 Laser distance meter 3 Bracket of the sensor recess
2 Laser meter adapter " (301492)    
The laser distance meter sits upside down in the sensor recess. The "front edge of the measuring tool" must therefore be selected as the reference plane.

See also Flexibly adjustable mounts

Using a compatible data logger, the values for mounting height and trimming can be transmitted to the LVL-R-5 . Both values are taken into account when calculating the water level (see Determining the water level).

With a Jellox Analogfor instance, mounting height and trimming can be set via the input window "Remote sensor module of type Radar".

Water level = (mounting height - distance) + trimming

Calculation of the measurement level "water level"

Mounting height 50 cm
Distance 40 cm
Trimming -1 cm
Water level 9 cm

The scattering of the measured values increases in waters with a turbulent surface. This can lead to gaps and jumps in the measurement graphs.

In section Framework conditions for a reliable measurement, you will find information on how the choice of installation location affects the quality of the measurement values and what steps you can take to optimise accuracy.

The LVL-R-5 does not have a special transport mode and therefore does not need to be deactivated.

A more detailed explanation is provided in section Storage of the product.

Additional information