Products » Radiation Detection » Portable Instruments » Dual Use instrument - Contamination and Dose Rate » LB 124 Scint-D

LB 124 Scint-D

Part number: 60026-10

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  • Measures simultaneously dose rate in µSv/h and contamination Bq/cm² or cps
  • Low weight and ruggedized
  • Flat detector responce
  • Wide temperature range
  • Counting gas supply not required - less and cheap maintaniance
  • Excellent position dependent response
  • Adjustable alarm levels, acustic alarm and optional vibration

The handheld LB 124 Scint-D is a contamination and dose rate monitor based on a 170 cm² ZnS(Ag) scintillation detector together with a energy compensated GM-tube. It simultanously measures alpha and beta/gamma contamination as well as gamma dose rate in ambient dose equivalent H*(10). Dose rate range 0,10 µSv/h to 20 mSv/h and the dose rate energy range from 50 keV to 1,3 MeV. There are calibration factors for more than 50 nuclides for Bq/cm² measurements

A sophisticated reflector geometry ensures that the response is extremely flat over the entire sensitive area. 

Partnumbers
60026-10 = LB 124 Scint-D with one set of 3 x C-cell alkaline batteries
60026-20 = LB 124 Scint-D with wall mount stand, power supply and rechargeable batteries

Radiation detector: ZnS(Ag) scintillator
Detect: Simultanious Alpha and Beta/Gamma + dose rate H*(10)
Detector: 118 mm x 145 mm, sensitive area: 170 cm². 
Measurement modes: Dose rate, Ratemeter, Scaler-timer-mode
Entrance window: Plastic metallized, thickness of 6 µm (0.4 mg/cm²)
Transmission Protective grid: 80 %
Max. operating time (without illumination): 3.5 Ah Ni-MH > 25 h or 7.8 Ah alkaline batteries > 50 h
Instrument Dimensions: 240  x 140 x 110 mm
Weight with batteries: 1400 g
Data memory: 1000 measured values
Interface RS232
Temperature range -20°C to +40°C (Operation)
Temperature range -40°C to +60°C (Storage)
Relative humidity 0 % to 80 % (no condensation)
Protection class IP53

Dose rate H*(10) detector
Dose rate range: 0.10 µSv/h to 20 mSv/h
Energy range: 50 keV to 1.3 MeV
Sensitivity: 0.652 µSv/h per cps Cs-137

Sensitivity
Efficiency (related to the activity of a source with an area of 100 cm²)
C-14: 11 % (Beta channel)
Cl-36: 43 % (Beta channel)
Co-60: 29 % (Beta channel)
Cs-137: 43 % (Beta channel)
Pu-239: 18 % (Alpha channel)
Am-241: 20 % (Alpha channel)
Background approx. 0.1 cps (Alpha channel)
Background approx. 10 cps (Beta channel)
Gamma sensitivity in external Cs-137 field with 1 µSv/h
Alpha channel not detectable
Beta channel < 100 cps
Spillover Alpha to beta channel: < 20 % with Po-210
Spillover Beta to alpha channel: < 2 x 10E-5 with Sr-90
Measuring range: 0 to 5000 cps (Alpha channel), 0 to 50000 cps (Beta channel)
Surface response uniformity:  max. ± 20 % (Alpha channel with Am-241 and beta channel with C-14 point sources)