LB 134 UMo II as Dose Rate Monitor

 The LB 134 Universal Monitor II can be used to measure radioactive alpha and beta-gamma contaminations on surface such as floors, walls, desks, objects, clothing or skin as well as gamma dose rate in ambient dose equivalent H*(10). Therefore a large number of detectors can be attached to the basic unit.

Data communication via RS 485 and USB with F²C protocol including PC programm for remote parameter up- and download, data storage and graphical evaluation. Saving data storage, parameter up- and download and firmware upgrade are possible via USB memory stick.


Highlights of the LB 134 UMo II

  • Lightweight, easy to handle, rugged
  • Connetion to all portable detectors
  • Network capability
  • Wide temperature range
  • PC Software with remote application
  • Practical bag with strap

Dose Rate Detector [built-in]

  • Detector positioned parallel to the front
  • Energy response to H*(10) Ambient Dose Equivalent
  • Halogen quenched Geiger-Müller tube
  • Dynamic range: 100 nSv/h to 20 mSv/h
  • Energy range: 50 keV to 1.3 MeV
  • Alarm threshold for dose rate measurement
  • Accumulated dose and dose rate
DisplayMonochrome LCD 192 x 64 pixel
Electro-luminescence illumination
Gamma radiation detector Geiger-Müller tube (built-in)
Measurement modes ratemeter, scaler-timer-, search mode
External dimensions 160 x 160 x 55 (L x W x D in mm)
Weight1400 g (with batteries)
Data memory 2400 measured values with date & time
Communication USB, Host for USB stick, RS 485
Max. operating time> 15 h alkaline batteries 2.6 Ah (4 x AA)
> 10 h NiMH rechargeable batteries 1.9 Ah
(internal detector activated)
Ambient Conditions
Temperature range – 20 °C to + 40 °C (operation)
Rel. humidity 0% to 80% (no condensation)
External pressure 500 to 1300 hPa (operation)
Protection class IP 53 (according to IEC 60529)
Sensitivity Gamma Radiation Detector
Dose rate range 100 nSv/h to 20 mSv/h
Energy range 50 keV to 1.3 MeV
Calibration factor 0.625 μSv/h per cps Cs137
Intr. background approx. 0.07 cps