Maintenance of the BLE Radar

Important: Only the manufacturer is permitted to open the enclosure to carry out maintenance work, which must also be completed strictly outside the Ex area.

The BLE Radar itself does not require any cyclic maintenance work other than the actions listed in chapter General maintenance  and replacement of the batteries after max. 10 years. In the event of unfavourable environmental conditions (e.g. low temperatures), it may occur that the battery capacity is depleted before this period of time has elapsed. The batteries must only be replaced by the manufacturer (see Contact information) or a certified service partner. The device must be returned in its original packaging for this purpose.

Even though the BLE Radar itself does not require any specific maintenance, it is advisable to carry out the following maintenance work at the measuring point on a regular basis. This can be done, for example, as part of an annual inspection of the measuring site. The interval at which maintenance work should be carried out also depends on the environmental conditions at the measuring site. If increased contamination or deposits are to be expected, the work should be carried out at shorter intervals. In addition, maintenance work should also be carried out after exceptional events (e.g. flooding) or in the event of implausible measurement values.

Maintenance work to be carried out regularly at the measuring site (recommendation):

  • Check whether the entire space between the sensor and the water surface covered by the radar coneis free of obstacles. If necessary, remove plants, debris or other objects from this area.
  • Check the radar lens at the bottom of the BLE Radar (see Overview) for contamination such as insect remains, bird droppings, cobwebs or other deposits. Clean the radar lens with a soft, damp cloth if necessary. Use a mild cleaning agent if necessary.
    Important: Due to electrostatic effects, the BLE Radar must not be rubbed with cloths in the Ex zone.
  • Check the alignment of the BLE Radar and correct it if necessary.
  • Check that the attachment points of the brackets in use are secure. If a secure hold cannot be restored due to cracks, crumbling masonry or corrosion in the area of attachment, new attachment points must be selected.
  • Check that all screw connections are tight. Tighten the screws if necessary.
  • Check all metal fastening components for corrosion. Replace any parts that are heavily corroded and likely to fail soon.