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Oil & Gas Industry

Level gauge LB470

  1. Point source shield
  2. Mounting base
  3. Radiation beam
  4. Rod detector
  5. Measurement line to master EVU
  6. Master EVU
  7. Product

The measuring system LB440 is used for the contactless, continuous measurement of liquids and bulk materials in reactors, vessels and bunkers. The measurement is not affected by the chemical and physical properties of the product being measured. The level measurement is adapted to the specific geometry of the vessel.

The LB 470 DuoSeries level measurement system is the successor of the well known and successful LB 440. It is based on the proven 2-wire technology and is compatible to the LB 440 and the LB 44xx / 54xx detectors.

Echipament radiometric de masurare continua a nivelului, tip Berthold LB 470 folosit pentru masurarea fara contact a lichidelor si a materialelor solide in rezervoare. Masurarea nu este afectata de proprietatile chimice si fizice ale produsului masurat (presiune, temperatura, vascozitate, culoare, densitatea mediului, etc.) Este succesorul binecunoscutului model performant LB440. Functionarea este bazata pe metoda consacrata “2 wire tehnology” si este perfect compatibil cu detectorii LB 44xx / 54xx.

User interface:

  • Operating Languages: English, German, Chinese, French, Italian, Portuguese, Russian, Korean, Spanish, Finish, Romanian, Serbian, Bulgarian
  • 3,5“ LC color touch display (320x240 pixels)
  • USB mouse / keyboard support
  • On-screen keyboard
  • Ethernet remote control

Power supply:

  • Wide range 100 ... 240 V AC
  • 24 V DC

Environmental conditions:

  • Operating temperature: -20°C ... +50°C

Inputs and Outputs

  • LB 4700 detector interface (Fully compatible to the LB 44xx / 54xx detectors)
  • Master / slave interface
  • RS-485
  • USB & ethernet ports
  • Monitored current output (4-20 mA) with user-defined mapping
  • 1 Error-relay (SPDT)
  • 2 Alarm relays (1x SPDT & 1x SPST) with user-defined mapping
  • 2 Digital inputs with user-defined mapping

Diagnostic functionality

  • Self-diagnostics according to Namur NE-107
  • Event log
  • Event counter
  • Change log
  • Data log

Software Features

  • Linear, exponential and inverted calibration
  • Calibration adjust
  • Process value and detector temperature alarms
  • Rapid Switch
  • Radiation interference detection
  • Source replacement notification
  • Simulation mode for all relevant measurement values
  • Gas Properties Compensation

Competitive Arguments

  • The 2-wire detectors don't need an additional power cable in the field.
  • The separate transmitter allows operation outside the radiation field.
  • The LB 470 can be operated locally without any additional devices
  • The LB 470 can be operated from a PC via a simple ethernet connection
  • The software of the LB 4700 detectors and the LB 470 transmitter can be updated from the control room via USB.
  • The advanced self-diagnostics of the LB 470 improves process reliability.
  • Only Berthold provides a fully DCS-compatible current output monitoring.
  • Only Berthold provides a solution for gas density compensation integrated in our systems.

Advantages of the LB 470 level measurement system over the LB 440

  • Local operation per touch screen is much easier.
  • The LB 470 can be controlled remotely via an Ethernet cable from a PC (e.g. from the office). The same user interface is used as for local operation.
  • The LB 470 provides an internal solution to compensate for gas influences, the Gas Properties Compensation.
  • The diagnostic functions of LB 470 were implemented in accordance with the Namur recommendation NE-107 and include event-descriptions and aid instructions in plain text.
  • The new slave modules are much more compact. Thus, three times as many slave modules fit into a wall housing / 19 "rack. Up to 17 detectors can be cascaded.
  • The LB 470 has our proven monitored current output.

Continuous Oil Analyzer LB 340B

From bottom to top, a subflow of the oil flows through the measurement configuration incorporating the systems for determining the sulphure content, densitym hydrogen content and temperature. The sulphure content, density and hydrogen content are determined radiometrically.

On one side of each measurement system there is a radiation source and on the opposite side a scintillation detector adapted to each individual measurement.

The three radiometric measurement methods are based on the following principles:

  1. Sulphure content measurement: The absorption of a 244Cm sources soft gamma radiation is influenced substantially by the oils sulphur content.
  2. Density measurement: The absorption of a 137Cs sources harder gamma radiation depends mainly on the oils density.
  3. Hydrogen content measurement: It is significant wherever continuous monitoring of the hydrogen content it is necessary for process control purpose. It can also compensates for influences of C/H ratio changes on sulphur and density.

Tower-Sens LB 490

Gamma radiation is attenuated when passing through its area. This attenuation is measured by a very sensitive detector. If the type of radiation, and wall thickness are constant during radiation, radiation attenuation will be affected only by a change in the level.

In this way, the safe can be measured without contact - regardless of pressure, temperature, viscosity, color and chemical properties. Consequently, radiometric measurement devices demonstrate a high level of functioning, even without the revisions under difficult operating conditions.

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