Highlights

General

  • High measuring accuracy
  • Precise distinction of radiation types
  • High sensitivity even at low energies
  • Low costs for the scintillator
  • Ease of maintenance

 

SCINT Technology

  • Unique simultaneous and separate measurement of α and β-y radiation
  • The individual types of radiation can be distinguished by means of special evaluation and correlation circuits, and thus separated and measured at the same time.
  • No counting gas required

Additional Features

  • Results can be displayed either as a count rate (cps = counts per second) or as area activities (Bq/cm²)
  • A metal grid protects the entrance window of the detector against damage

 

Different versions

LB 1342

The window foil of the detector is sensitive to mechanical damage. It is protected by a metal grid, but users should take precautions against damaging the window foil ( careful with sharp objects, measurement on stubble fields, rose bushes, cat paws, etc.).

A damaged detector window foil can be replaced by the user. BERTHOLD supplies a replacement foil stretched over a frame as spare part.

  • LB 1342 ZnS scintillation detector 170cm² α, β and γ contamination
  • 118 mm x 145 mm (170 cm²) at a transmission of 80%

  • Background: alpha channel approx. 0.1cps, beta channel approx. 10cps

The measuring results are presented on the easy to operate battery Universal Monitor (UMo II) LB 134 with display, data storage and printer output.

 

LB 1342 with cable 12

zoomed detector of LB 1342

LB 1342 sensitive detector area: 118mm x 145mm, 170 cm²

LB 1342 with LB 134 UMo II Universal Display

Lb 1342 with LB 134 connected

LB 134

LB 1343

  • LB 1343 ZnS scintillation detector 345 cm² α ,β and γ contamination
  • It is protected by a protective grid
  • A damaged detector window foil can easily be replaced by the user. BERTHOLD supplies a replacement foil stretched over a frame as spare part.
  • Background: alpha channel approx. 0.1cps, beta channel  approx. 15cps

The measuring results are presented on the easy to operate battery Universal Monitor (UMo II) LB 134 with display, data storage and printer output.

LB 1343 with black cable 12

LB 1343 with LB 134 UMo II Universal Display

LB 1343 connected with UMo 134 II

detector side of LB 1342 zoomed

LB 1343 sensitive detector area: 150 mm x 230 mm, 345 cm²

Technical Data

 LB 1342LB 1343
Sensitive detector area

118mm x 145mm, 170 cm²

150 mm x 230 mm, 345 cm²
Entrance window

layer thickness: 6 µm

weight per unit area: 0.4 mg/cm²

layer thickness: 6 µm

weight per unit area: 0.4 mg/cm²

Geometric transmission

80%80%
Background

Alpha channel: approx. 0.1cps,
beta channel: approx. 10cps

Alpha channel: approx. 0.1cps,
beta channel:  approx. 15cps
Sensitivity to 1 µSv/h external gamma radiation (Cs-137)

alpha channel: not detectable

beta channel: < 100cps

alpha channel: not detectable

beta channel: < 100cps
Spillover

alpha into beta channel (Po-210): < 20%

beta into alpha channel (Sr-90): < 2*10-5

alpha into beta channel (Po-210): < 20%

beta into alpha channel (Sr-90): < 2*10-5

Local variation responsiveness

both channels: ±20%both channels: ±20%
Temperature range

temperature range operation: -20°C to +40°C
(no condensation)

temperature range storage: -40°C to +60°C

temperature range operation: -20°C to +40°C
(no condensation)

temperature range storage: -40°C to +60°C

Protection typeIP53IP53
Light-proof/ Entrance windowSunlight      <10cpsSunlight      <10cps