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LB 1234 – Scintillation gamma probe

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  • LB 1234 scintillating gamma probe 
  • Two sizes of NaI detector 1″ x 1″ or 1.5″ x 1.5″
  • Measured unit cps (not dose rate)

The NaI-Scintillation-Counter Probe LB 1234 and LB 1234-2 are offering a high γ-sensitivity in the energy range between 25 keV and 2 MeV. Typical application is searching for radioactive sources or low level fluctuation detection.

When connected to LB 115 you need an other cable with free leads, 5 meters connecting cable to LB 115, part 23784


Data sheet


Stefan Mårtensson


Technical specification

Scintillator: 1 x 1″ or 1.5 x 1.5″ NaI
Measured unit: cps
γ-sensitivity: 250 cps per µSv/h @ 662 keV  (1″)
                   3000 cps per µSv/h @ 59 keV  (1″)
Background: approx. 30 cps @ 0,1 µSv/h
Energy range: 25 keV to 2 MeV (coating 0.5 mm aluminium)
Dimensions: Ø40 x 305 mm (Ø50 mm at the handle)
Temperature range: -10 °C to +40°C
Protection class: IP 65
Electronic: PMT, active voltage divider, high voltage supply, pre-amplifier with discriminator
Wall bracket: Optional. P/N 25668. 

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