Measuring level and density on different elevations

To achieve optimum control of the cracking taking place inside the hydrocracking reactor the level of hydrocarbons, catalyst and gas is monitored by means of multiple density measurements along the reactor height. The radiometric density gauges from Berthold are very fast responding and are capable of measuring smallest density changes down to a resolution of ≤0.002 g/cm3.



Customer Benefit

  • Maximum process transparency 
  • Reliable control over the cracking process
  • Increased throughput and availability
  • Efficient utilization of catalyst



  • Multiple point sources inserted in dip pipe
  • Density detectors mounted outside the reactor
  • Typically a reduction of the vessel wall is required for improved measurement effect
  • Highly accurate density reading, resolution of ≤0.002 g/cm3
  • Very fast responding measurement

SIL certified option

The SENSseries LB 480 detectors are certified for use in SIL2 applications. Even SIL3 is achieved with homogenous redundancy. The certificate covers all measurement applications, from high level or low level alarms to continuous level measurement and density measurement. Thus safe operation of critical oil and gas processes is guaranteed.

More about SIL



The multiphase level measurement

For the measurement of three or more different product layers or where no clear interface is formed and therefore emulsion layers have to be monitored, our multiphase level measurement EmulsionSENS is used. Here, a density profile of the vessel contents is created and, depending on the measuring arrangement, the position of the individual phases is additionally determined.



Various thick walled vapor/liquid separators, catalyst handing vessel, various towers and in-line densities at high temperature and high pressure.
Radiometric level and density measurements are used in the separation section of the hydrocracker to ensure that proper vapor/liquid separation occurs as the pressure and temperature is lowered thorught the various separators. Radiometric measurements are also used the catalyst section of the hydrocracker to ensure the pro­per amount of catalyst is added or withdrawn from the reaction system to maintain effective cracking.


Multiphase level measurement Whitepaper

English | PDF | 4.2 MB