Gamma Density Measurement with SmartSeries LB 414

Smart detector for non-hazardous areas

The SmartSeries LB 414 is a radiometric detector for density, concentration and solids content measurements, combining both -detector and evaluation in one single unit.

Measuring principle density measurement

The density measurement SmartSeries LB 414 can be applied on all liquids and slurries. Besides the high level of accuracy and repeatability, easy use of the detector is a major advantage of this density gauge. The local user interface with display and the software -focusing on the main functions make calibration and operation of the HART device very easy. Parametrization can be carried out directly at the detector’s push button, using a HART communicator, via PC or infrared remote control.

A smart solution for standard tasks

The density detector SmartSeries has been designed for the harshest of process conditions and is best suited for standard density measurements in non-hazardous, non-explosive environments but tough industries like mining, cement or pulp & paper industry. Its outstanding mechanical stability and robustness is verified by the Fraunhofer Institute. SmartSeries is cost-efficient and can be used for many years without the need of maintenance and re-calibrations.

SmartSeries LB 414 - Your advantages at a glance:

  • Compact field device with integrated transmitter
  • Perfect for density measurements in non-hazardous areas
  • Simple and straightforward local display operation
  • Process connection via 4-20mA/HART
  • No recalibration required
  • Impressively simple



  LB 414

Detector operating data


Power supply

100 ... 240 VAC +/–10 %, 50 ... 60 Hz max. 10 VA
24 VDC, 18 ... 32 VDC max. 8 W

Cable connections

3 cable entries, 1x M20, 2x M16

Maximum cable length

3300 m (120 Ω), 1600 m (250 Ω), 800 m (500 Ω)

Wire cross section

0,5 ... 1,5 mm2 (bis 2,5 mm2 without wire-end sleeves)

Housing material

Stainless steel ISO 1.4301 / AISI 304 (others on request)

Water cooling

Option (can also be retrofitted), max. 6 bar


Scintillator size                  Weight                  Weight with                  Collimator      

Ø x length [mm]                   [kg]                  cooling system [kg]          


(Point detectors)

50 x 60 Polymer            10                           13,5                              Option

40 x 35 NaI(Tl)              10                           13,5                              Option 

Ambient temperature
(Operation and storage)

 -20 ... +60°C (-4 ... +140°F)

Temperature stability

≤ 0.002 %/°C (–20 ... +50 °C)

Detector certificates & tests


Environmental tests

IP protection: IP66 / IP67
IEC 60068-2-27 
Mechanical shock (30 g)
IEC 60068-2-6 Vibration (1,9 g at resonance frequency)
IEC 60068-2-38 Temperature and humidity (–10 ... 65 °C; >90 %)
IEC 60068-2-14 
Temperature shock  (–45°C ... 65 °C in 10 s)

Other certificates

CCSAUS general area

Inputs and outputs


Signal output

HART 4 ... 20 mA potential-free, active or passive

Digital output

Relay (SPDT) optionally for: Status indicators, min./max. alarm,

Detector temperature



Measurement application 

Density/Concentration: g/cm3, kg/m3, g/l, SGU, lb/gal, lb/ft3, Solids content: % (wt/wt)

User Interfaces

Local User Interface, HART, PC Interface

Data backup

in non-volatile memory

Options and accessories


PC software for parameter setting


Accessory kit
for expanded
temperature range

Stainless steel lid and cable glands
–40 ... +60 °C (–40 ... +140 °F),
with water cooling –40 ... +100 °C (–40 ... +212 °F)

Accessory kitExternal communication

M20 adapter and cable for detector service modem
or 475 HART Communicator

IR remote control

Infrared remote control for local user interface


Protects polymer lid from unintended removal



Format Size
Densidad y Concentracion solidos Spanish language en PDF 2.65 MB
Density Measurement Russian language en PDF 2.51 MB
Density measurement - system overview en PDF 1.57 MB
SmartSeries LB 414 en PDF 1.48 MB
Operation Manual
Format Size
LB 414 en PDF 5.04 MB
LB 414 Spanish language en PDF 5.22 MB
LB 414 Configuation as high or low level switch Short instruction en PDF 132.44 KB
Product Information
Format Size
DTM for SENSseries LB 480 & SmartSeries LB 414 en PDF 2.43 MB
Project Questionnaire
Format Size
Density en PDF 104.6 KB
Software Tool
Format Size
FlashLoader for Software Update de, en ZIP 2.97 MB
LB 414 PC Control Software Version 1.2.0 de, en ZIP 546.39 KB
LB 480 & LB 414 HART DTM V2.4.4.61 Software Level, Density, Switch de, en ZIP 18.19 MB
SmartSeries LB 414 Density DD (Device Description) for HART-Communicator de, en ZIP 260.74 KB
SmartSeries LB 414 Embedded Software, Update Version 1.3.0 en ZIP 546.39 KB
Technical Information
Format Size
LB 414 de, en PDF 2.31 MB