Specializing in Industrial Automation & Data Collection Since 1984

Level Sensor

LMK 858

BD Sensors LMK 858 Plastic Detachable Submersible Probe for Aggressive Media with Ceramic Sensor , from 0 … 40 cmH2O up to 0 … 100 mH2O with 45 mm Diameter

SKU: LMK 858 Category:

The separable plastic immersion probe LMK 858 was designed for level measurement in aggressive media (acids, alkalis), desalination plants and for use in more viscous media such as sludge. Since the area of application is often outside a building, great emphasis was placed on high surge / lightning protection. The immersion probe is based on an extremely robust and precise pressure sensor, the membrane of which consists of a high-purity ceramic (99.9% purity), with which even the smallest fill levels can be reliably detected. Another special feature of the LMK 858 is the separability of the probe head and cable part. This advantage reduces maintenance or service tasks and also simplifies storage.


  • Nominal pressure:
  • from 0 ... 40 cmH2O up to 0 ... 100 mH2O
  • Output signals:
  • 2-wire: 4 ... 20 mA others on request
  • Special characteristics:
  • diameter 45 mm
  • cable assembly and sensor head detachable
  • chemical resistance
  • housing PP-HT
  • integrated lightning protection and increased overvoltage protection 8 kA gas discharge tube (8/20 μsec); 4 kV surge l-l/l-e according to EN61000-4-5
  • Optional versions:
  • diaphragm 99.9 % AI2O3
  • different kinds of cables and elastomers
  • cable protection (on request)