Density measurement with SENSseries LB 480

High-sensitive Detectors for Non-contact Process Measurements

The density detector SENSseries LB 480 is a compact field device combining cutting-edge measurement technology with the highest level of manufacturing quality and innovative features – the best system for high demand applications:

  •           density measurements
  •           concentration measurements
  •           solid content measurements

Safety Integrity

SENSseries LB 480 is the first radiometric density system on the market that has achieved SIL2 / SIL3 certification. Furthermore it provides many safety features and diagnosis functions such as a “Monitored Current Output” ensuring safe and reliable measurement during the complete time of operation. SIL 3 operation is possible in redundancy installations (1oo2).

Be SENSitive

SENSseries detectors have an outstanding sensitivity resulting in a significantly increased measuring accuracy. This allows for the use of very small source activities – a great advantage in terms of shielding costs and radiation protection matters.


The product version SpeedStar is used when rapid process changes have to be detected immediately. It offers an unmatched quick measurement with update rates down to 50ms only. One example of application is the detection of slugs in the pipeline before they enter the production vessels further downstream.



CrystalSENS Detector

Point detector with high-sensitive, high-quality Sodium Iodide crystal for best long-term stability.

UniSENS Detector

Rod detector with a sensitive detector length of 0.5 up to 2.0m for level and interface measurements.

SuperSENS Detector

Best sensitivity on the market, is able to work with smallest source activities.
LB 480
Detector operating data 
Power supply100 ... 240 VAC, ±10%, 50 ... 60 Hz, 8 VA
24 VDC (18 ... 32 VDC), 8 W
Housing materialStainless steel ISO 1.4301 / AISI 304 (others upon request)
Water coolingOption (can also be retrofitted), max. 6 bar
Scintillator Size Ø x lenght [mm]
(point detectors)
50 x 50 NaI (Tl)
Ambient temperature
(Operation and storage)
-40 ... +60°C (.40 ... +140 °F) for NaI (Tl),
observe possible temp. restrictions for Ex-protection!
Temperature stability≤0.002%/°C (-40 ... +60°C) for NaI (Tl)
Detector certificates & tests 
Explosion protectionATEX:
II 2 G Ex db eb IIC T5 / Ex tb IIIC T95°C          -40°C ... 80°C
II 2 G Ex db eb IIC T6 / Ex tb IIIC T80°C          -40°C ... 60°C
Vibration / ShockVibration: 1.9 g / mechanical Shock: 30 g
according to DIN EN 60068-6 and 60068-2-27
Signal inputs and outputs 
Signal outputsHART 4 ... 20 mA
Resolution better than 0.006 mA
Stability +/-0.0001 %/°C (-40 ... 60°C)
Analogue inputPt100 for temperature compensation
Digital outputsOpen Collector alternatively for: max./min. alarm, warning messages + error messages, hold signal, radiation interference detection, detector temperature
InterfacesRS 485 for software update


Format Size
Densidad y Concentracion solidos Spanish language en PDF 2.65 MB
Density measurement - system overview en PDF 1.57 MB
Medicao de Densidade e Concentracao Portuguese language en PDF 2.81 MB
SENSseries LB480 en PDF 1.49 MB
SIL Approved Radiometric Detectors SENSseries LB 480 en PDF 339.29 KB
Format Size
ATEX LB 480 en PDF 6.51 MB
IECEx LB 480 en ZIP 3.03 MB
LB 480 CSA Ex for Zones USA & Canada Certificate de, en PDF 322.25 KB
LB 480 FM Ex for Class/Division in Canada de, en PDF 229.69 KB
LB 480 FM Ex for Class/Division in USA de, en PDF 229.78 KB
LB 480 Summery Ex-Certificates en PDF 66.71 KB
SIL SENSseries LB 480 en PDF 473.42 KB
Operation Manual
Format Size
LB 480 Density en PDF 7.83 MB
Product Information
Format Size
DTM for SENSseries LB 480 & SmartSeries LB 414 en PDF 2.43 MB
LB 480 CSA Cerficate en PDF 1.76 MB
LB 480 SIL en PDF 3.44 MB
Project Questionnaire
Format Size
Density Portugiese Language en PDF 500.16 KB
Software Tool
Format Size
FlashLoader for Software Update de, en ZIP 2.97 MB
LB 480 & LB 414 HART DTM V2.4.4.61 Software Level, Density, Switch de, en ZIP 18.19 MB
LB 480 DeviceDescription for 475 HART-Communicator Level, Density, Switch de, en ZIP 470.58 KB
LB 480 Embedded Software V01.00.06 Level, Density, Switch de, en ZIP 3.87 MB
LB 480 HART DD Software HCF Level, Density, Switch de, en ZIP 1.18 MB
LB 480-PC User Interface de, en ZIP 4.07 MB
Technical Information
Format Size
LB 480 Density de, en PDF 1.94 MB