Density Transmitter DuoSeries LB 475

DuoSeries LB 475 is the new radiometric density system from Berthold especially designed for the hydraulic fracturing and cementing industry. The measuring system DuoSeries stands out by a particularly excellent performance with high accuracy and repeatability of density as well as pounds proppant added.

The DuoSeries density measuring easily connects to the FracSENS LB 6770 detector and links directly to the customer control system. No calibration or difficult math has to be implemented in the data system. The density gauge is used to translate the measured count rate into the output values specified by the customer such as PPA, PPG or SGU either in low pressure or in high pressure applications.

The density transmitter is a state-of-the-art control unit with robust 3.5” TFT touch panel, powerful Dual Core CPU, and diverse operator interfaces. Operators benefit from the new simplified user-friendly interface where calibration is as simple as possible. Only two-points – a low and a high density, e.g. air and water – have to be acquired by the customer. Advanced self-diagnostics and monitoring features ensure a safe function of the system.

Operators also benefit from the new service functionalities like data logging, which can be accessed either remotely through Ethernet connection or through the USB port at the front panel of the system.



FracSENS LB 6770

Nucleonic density detector for direct integration into the customer control system, providing counts per second output



DuoSeries LB 475 Fracturing
Operating data


Power supply100...240 VAC ±10 %, 50 ... 60 Hz, 30 VA
24 VDC (18 ... 30 VDC), 30 W
Ambient temperature

Operation: -20 ... +60°C (-4 ... +140°F)
no condensation
Storage: -20 ... +85°C (-4 ... +185°F)
no condensation

Design19" module 3RU, 21HU, protection IP 20


Dual Core CPU

InstallationIn wall-mounted cabinet (up to 2 units)
In 19" rack (up to 4 units)
Other options available on request



Other certificates

NRTL according to UL/CSA approval
(100...240 VAC only)

Signal inputs and outputs


Signal output

4 ... 20 mA, potential-free / max. impedance 500 Ω

Digital inputs

2 inputs, for external calibration

Digital outputs

1 relay (SPDT) for failure event
2 relays (SPDT and SPST) for high/low PV alarm,
detector temperature, etc.
(see manual for all options)


g/ccm, SGU, PPA


USB (for software update, data backup, keyboard, mouse)
RS 485, Ethernet (for remote access)

Data backup

internally: in non-volatile memory
externally: USB memory device


Menu languages

English, German, French, others on request


- Easy calibration
- Automatically generated message for pending
  source exchange
- Diagnostics according to Namur NE-107 with event log,
  change log, data log


Application Report
Format Size
Solution for Oil and Gas Production Level, Multiphase Level and Density Measurement de, en PDF 4.24 MB
Format Size
DuoSeries LB 475 Fracturing en PDF 662.38 KB
FracSENS LB6770 Densitometer de, en PDF 598.15 KB
Operation Manual
Format Size
LB 475 en PDF 9.97 MB
LB 6770 de, en PDF 1.15 MB
Software Tool
Format Size
LB 475 DuoSeries Measuring Unit Software Update Version 1.4.0 de, en ZIP 12.13 MB
LB 6770 PC Application de, en ZIP 2.97 MB
LB 6770 Update Software Version 1.1.1 de, en ZIP 321.85 KB