LB 126 portable Dose- and Doserate Monitor

Handheld monitor for measurement of ambient dose equivalent H*(10) for photon radiation with energy compensated proportional counter tube LB 6006-H10.


  • Compact and power-saving microprocessor electronics with charging circuit for 4 rechargeable batteries (AA cells)
  • Measurement of the new quantities ambient dose and ambient dose rate equivalent H*(10)
  • Energy-compensated low dose counter tube LB 6006-H10 according to ICRU Report 39
  • Easy operation by means of 3 softkeys
  • Signal and alarm indication
  • Free selectable alarm thresholds for dose and dose rate
  • Data storage for 1000 measurements
  • RS232 and RS485 data interface for printout and communication;
    RS485 networking for up to 32 devices

The LB 126 is a portable Dose Rate Monitor which is used in the entire field of radiation protection. A sealed off proportional counter tube, approved in accordance with the new standard H*10, is used as detector.

Three buttons suffice to navigate through the clearly arranged and userfriendly
menu prompting.

Up to 1000 measurements can be stored in the data memory and this data can be accessed and printed out via a RS232 and/or a RS485 interface. Serial data communication with the PC, i.e. reading and reset of the data memory, acquisition of the measurement values, reading the parameters and reset of the dose, takes place via F2C Protocol.

Up to 32 devices can be linked via the integrated RS485 interface within a RS485 bus system.

Digital electronics
Microprocessor electronics with charging circuit for 4 rechargeable batteries
(AA cells)
Alternative operation with 4 batteries (AA batteries)
32 kB Eeprom memory for parameters and 1000 measurement data
Real time clock, battery-buffered
Acoustics for single pulses and alarm
Free selectable alarm thresholds for dose and dose rate
RS232 and RS485 interface with adjustable baud rate
Selectable Units                                                   µSv/h, µSv or mrem/h, mrem
Operating temperature-10 to +40°C
Relative humidity30 % to 75 %
External charging voltage+9 VDC, <0.6V
Energy-compensated proportional counter tube according ICRU Report 39;
H*10 (ambient dose equivalent)
Measuring Range                                50 nSv/h to 50 mSv/h
Energy Range30 keV – 1.3 MeV
Angle dependence± 45°
Operation point1750 V
Calibration factor0.214 µSv/h
Intrinsic Background0.07 cps
Dead time2.6 µs
Digital electronics
Lenght x diameter                   370 mm x 50 mm
Weight950 g
Display ranges
Doserate                                                               0 to 50000 mSv/h
Dose0 to 999 mSv
Dose Integral timeup to 99:59:59 (hh:mm:ss)


Order Information and Accessories                                                        Ident. No.
Aluminium case for storage and transport           LB 123-K48089
Wall bracket                                                         for LB 12647587



Handheld monitor for fast and reliable measurements of ambient dose equivalent H*(10) in photon radiation fields.

Format Size
LB 126 en PDF 116.37 KB