Technological Highlights

Simple and intuitive operation

  • Versatile detector for various applications
  • Solid system for standard applications
  • Can also be used for mass flow measurements


State of the art technology

  • Compact field device with integrated transmitter
  • Communication via HART, Foundation Fieldbus or Profibus PA
  • Communication can be switched from Bus to HART at any time

Robust detector for high demands

The Uni-Probe LB 491 is a compact field device, combining both detector and evaluation in one single instrument. It provides interfaces for

  • HART
  • Profibus PA
  • Foundation Fieldbus

Even if the Uni-Probe LB 491 is used in Profibus or Fieldbus systems, it is always possible to switch to HART communication if required. In addition the separate 4-20mA current output can always be used as alternative signal output.


Highly sensitive density measurement systems

Our high-sensitive detectors achieve a better measuring effect and can work with remarkably low source activities. Depending on the application the source activity can be reduced by up to 80%.

Read more

Sources & Shields

Sources & Shields

Sources and shields used in our radiometric systems are the safest and highest quality on the market. The shielding containers create an optimum shielding.


Density Measurement Brochure

English | PDF | 1.6 MB

Radiometric measurement Whitepaper

English | PDF | 1.8 MB

Density LB 491 Manual

English | PDF | 15.9 MB

Article made to measure Publication

English | PDF | 6.8 MB