Harshaw Model 3500 TLD Reader includes a sample drawer for a single element TLD dosimeter, a linear, programmable heating system and a cooled photomultiplier tube with associated electronics to measure the TL light output.
- Planchet heating incorporates welded thermocouple for best temperature reproducibility
- Heating profile includes pre-heat, acquire and anneal cycles
- Easy to operate, service and maintain
- Heating temperature capability up to 600°C (1112°F)
- Seven decade glowcurve acquisition range
- Optional neutral density filter to extend the high measurement range
- Thermoelectric PMT cooler for maximum gain stability
- Measurement quality assurance
- Freely selectable alarm limits
- Automatic background subtraction capability
- Compact and attractive
Dosimetry Performance Using LiF;Mg,Ti Chips (TLD-100)
- Tissue equivalence: nearly tissue equivalent
- Fading: <20% in 3 months without thermal treatment; <5% in 3 months using preheat or glow curve deconvolution
- 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
- Reuse: more than 500 per dosimeter with <10% sensitivity change
- Threshold: <10µGy (1 mrad) based on 2.26 std. dev. of 10 repeat readings of an unexposed dosimeter
Ordering Alerts: Computer requirements (minimum): Pentium 166MHz with 32MB RAM; 40 MB free disk space; CD-ROM drive; SVGA color monitor (800 x 600), keyboard and mouse; Windows* 98, 2000, XP or NT 4.x; One RS232 serial port for connection to Model 3500 and one parallel port for printer.
Compatible with: Thermo Scientific TLD card dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Recommended for: Ideal for:
- Radiotherapy planning verification
- Total body irradiation dose verification
- Skin irradiation dose verification
- Stereotactic beam output factor measurement
- Critical organ dose verification
- Diagnostic dose studies
- CT dose measurement for quality assurance
- Environmental dosimetry
- Testing for irradiated food
- Radioactive dating
- High dose verification for electronic components
