Harshaw TLD Model 5500, Automatic reader

  Harshaw TLD Model 5500, Automatic reader



TLD The Harshaw 5500 includes an automatic sample changer and carrier disk for automatic processing of up to 50 TLD dosimeter elements in a single loading.

   Product Detail


The Model 5500 TLD Reader provides cost-effective measurements of the radiation dose absorbed by individual TLD elements: ribbon (chips), rods or micro-cubes. The instrument includes an automatic sample changer and carrier disk for automatic processing of up to 50 TLD dosimeter elements in a single loading. Also included are a linear, programmable heating system and a cooled photomultiplier tube with associated electronics to measure the TL light output. The WinREMS System Software, which runs under Windows™ on a separate computer, provides the user interface, the reader control and the application software.

Model 5500 key features:

  • Unattended automatic operation for up to 50 dosimeters
  • Multiple, programmable, linear time-temperature profiles
  • Heating profile includes pre-heat and post-read anneal cycles, with editing
  • Heating by hot gas, temperature capability up to
  • 7 decade glowcurve acquisition range
  • Thermoelectric PMT cooler for maximum gain stability
  • Measurement quality assurance
  • Automatic background subtraction capability
  • Easy to operate, service and maintain
  • Compact and attractive; 460 mm wide x 560 mm deep x 375 mm high
  • Built-in calibration software

Applications:

  • Radiotherapy planning verification
  • Total Body Irradiation dose verification
  • Skin Irradiation dose verification
  • Stereotactic beam output factor measurement
  • Critical organ dose verification
  • Diagnostic dose studies
  • Mammography
  • CT dose measurement for quality assurance
  • Environmental dosimetry
  • Radioactive dating
  • Radiation hardness testing
  • Research

Advantages of a separate computer:

  • Minimum initial investment
  • Extremely flexible parametric adjustments, implemented in software
  • The computer can be used for other purposes when not required for TLD 
  • Data is easily exported to ASCII for use by commercial software for data manipulation and special report generation
 
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Purchase Details
SKU : Harshaw TLD 5500 
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Specifications:
(These performance figures are when using LiF:Mg,Ti chips (TLD-100))
Radiations measured :Photon, energies > 5 keV
Neutron energies thermal to 100 MeV
Electron/beta, energies > 70 keV
Range (photons) :10 µGy to 1Gy (1mrad to 100 rad) linear
1 Gy to 20 Gy (100 rad to 2000 rad) supralinear
Tissue equivalence :Nearly tissue equivalent
Batch uniformity :+/- 15% Std. Dev. from the batch mean, tighter on special request
Residual TL signal :< 0.2% of reading, over the range, without annealing
Repeatability :for 1 mGy (100 mrad) 137Cs doses, < 2% Std. Dev. of 10 sequential measurements
Reuse :more than 500 per dosimeter with < 10% sensitivity charge
Threshold :<10 µGy (1 mrad) based on 2.26 Std. Dev. of 10 repeat readings of an unexposed dosimeter