Thermo Scientific™

Harshaw TLD™ Model 3500 Manual Readers

Catalog number: 3500TLDREADERHT
Thermo Scientific™

Harshaw TLD™ Model 3500 Manual Readers

Catalog number: 3500TLDREADERHT
Thermoluminescence (TL) technology is commonly used in medicine, such as in radiation therapy for dose measurement on the skin and within the body to assess treatment and ensure that safe radiation levels are maintained. The Thermo Scientific™ HARSHAW TLD™ Model 3500 Manual Reader provides manual readout of TL chips, disks, rods and cubes in a broad variety of sizes. This reader is suitable for all kinds of applications that require thermoluminescence dosimetry (TLD) detectors. Due to planchet heating, this versatile model is able to read powders, an essential feature for food testing and analysis. 
 
Catalog Number
3500TLDREADERHT
Unit Size
Each
Description
TLD reader instrument (High temperature)
Price (USD)
Full specifications
Batch Uniformity±30% from the factory standard
DescriptionTLD reader instrument (High temperature)
Dose RangeMeasurement range: 10 µGy to 1 Gy (linear), 1 Gy to 20 Gy (supralinear)
Detection threshold: <10 µGy based on 2.26 standard deviations for 10 sequential readings of an unexposed dosimeter
Dosimeter ReusabilityTypically>500
Dynamic Range7 decades
Flow Rate130 liters/h, subject to external regulation
Heating MethodMultiple, programmable, linear heating cycles include pre-read anneal, acquire and post-read anneal cycles
Height (English)1.85 in.
Height (Metric)47 cm
HumidityFunctions within specification after 24 hour
LinearityBetter than 1%
PMTsThermoelectric PMT cooler for Maximum gain stability
Radiation TypePhotons, Electrons, Neutrons
Reference LightTemperature-stabilized LED
RepeatabilityLess than 2% variation based on one standard
StabilityHV stability: ±0.005% per hour, ±0.02% per 8 hours
Operating Temperature (English)59°F to 104°F
Storage Temperature (English)14°F to 140°F
Operating Temperature (Metric)15°C to 40°C
Storage Temperature (Metric)−10°C to 60°C
Time and Temperature ProfilesHeating temperature capability up 600°C; Typical cycle time per detector: 30 seconds
Power SupplySelectable, 110/120 VAC ±10%, 60 Hz or 220/240 VAC ±10%, 50 Hz
Warm Up Time30 min.
Weight (English)55.12 lb.
Weight (Metric)25 kg
Width (English)12.6 in.
Width (Metric)32 cm
Ambient Light ExposureFunctions within specifications when exposed to ambient light up to 1000 Lux with cover on the reader
For Use With (Equipment)Thermo Scientific TLD Card Dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Product TypeRadiation Dosimeter Reader
SensitivityDependent on config. Used
Unit SizeEach
Catalog Number
Unit Size
Each
Description
3 Year Extended Depot Service Warranty
Price (USD)
Full specifications
Description3 Year Extended Depot Service Warranty
Radiation TypePhotons, Neutrons, Thermal, Electron/Beta
Repeatabilityfor 1 mGy (100 mrad) 137 Cs doses, <2% STD DEV of 10 sequential measurements
For Use With (Equipment)Thermo Scientific TLD Card Dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Product TypeRadiation Dosimeter Reader
SensitivityDependent on config. Used
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Model 3500 with Heating Temperature Capability of 400°C
Price (USD)
Full specifications
Batch Uniformity±30% from the factory standard
DescriptionModel 3500 with Heating Temperature Capability of 400°C
Dose RangeMeasurement range: 10 µGy to 1 Gy (linear), 1 Gy to 20 Gy (supralinear)
Detection threshold: <10 µGy based on 2.26 standard deviations for 10 sequential readings of an unexposed dosimeter
Dosimeter ReusabilityTypically>500
Dynamic Range7 decades
Flow Rate130 liters/h, subject to external regulation
Heating MethodMultiple, programmable, linear heating cycles include pre-read anneal, acquire and post-read anneal cycles
Height (English)1.85 in.
Height (Metric)47 cm
HumidityFunctions within specification after 24 hour
LinearityBetter than 1%
PMTsThermoelectric PMT cooler for Maximum gain stability
Radiation TypePhotons, Electrons, Neutrons
Reference LightTemperature-stabilized LED
RepeatabilityLess than 2% variation based on one standard
StabilityHV stability: ±0.005% per hour, ±0.02% per 8 hours
Operating Temperature (English)59°F to 104°F
Storage Temperature (English)14°F to 140°F
Operating Temperature (Metric)15°C to 40°C
Storage Temperature (Metric)−10°C to 60°C
Time and Temperature ProfilesHeating temperature capability up to 400°C;Typical cycle time per detector: 30 seconds
Power SupplySelectable, 110/120 VAC ±10%, 60 Hz or 220/240 VAC ±10%, 50 Hz
Warm Up Time30 min.
Weight (English)55.12 lb.
Weight (Metric)25 kg
Width (English)12.6 in.
Width (Metric)32 cm
Ambient Light ExposureFunctions within specifications when exposed to ambient light up to 1000 Lux with cover on the reader
For Use With (Equipment)Thermo Scientific TLD Card Dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Product TypeRadiation Dosimeter Reader
SensitivityDependent on config. Used
Unit SizeEach
Showing 3 of 3
Catalog NumberSpecificationsUnit SizeDescriptionPrice (USD)
3500TLDREADERHTFull specifications
EachTLD reader instrument (High temperature)Request A Quote
Batch Uniformity±30% from the factory standard
DescriptionTLD reader instrument (High temperature)
Dose RangeMeasurement range: 10 µGy to 1 Gy (linear), 1 Gy to 20 Gy (supralinear)
Detection threshold: <10 µGy based on 2.26 standard deviations for 10 sequential readings of an unexposed dosimeter
Dosimeter ReusabilityTypically>500
Dynamic Range7 decades
Flow Rate130 liters/h, subject to external regulation
Heating MethodMultiple, programmable, linear heating cycles include pre-read anneal, acquire and post-read anneal cycles
Height (English)1.85 in.
Height (Metric)47 cm
HumidityFunctions within specification after 24 hour
LinearityBetter than 1%
PMTsThermoelectric PMT cooler for Maximum gain stability
Radiation TypePhotons, Electrons, Neutrons
Reference LightTemperature-stabilized LED
RepeatabilityLess than 2% variation based on one standard
StabilityHV stability: ±0.005% per hour, ±0.02% per 8 hours
Operating Temperature (English)59°F to 104°F
Storage Temperature (English)14°F to 140°F
Operating Temperature (Metric)15°C to 40°C
Storage Temperature (Metric)−10°C to 60°C
Time and Temperature ProfilesHeating temperature capability up 600°C; Typical cycle time per detector: 30 seconds
Power SupplySelectable, 110/120 VAC ±10%, 60 Hz or 220/240 VAC ±10%, 50 Hz
Warm Up Time30 min.
Weight (English)55.12 lb.
Weight (Metric)25 kg
Width (English)12.6 in.
Width (Metric)32 cm
Ambient Light ExposureFunctions within specifications when exposed to ambient light up to 1000 Lux with cover on the reader
For Use With (Equipment)Thermo Scientific TLD Card Dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Product TypeRadiation Dosimeter Reader
SensitivityDependent on config. Used
Unit SizeEach
3500TLDDS3Full specifications
Each3 Year Extended Depot Service WarrantyRequest A Quote
Description3 Year Extended Depot Service Warranty
Radiation TypePhotons, Neutrons, Thermal, Electron/Beta
Repeatabilityfor 1 mGy (100 mrad) 137 Cs doses, <2% STD DEV of 10 sequential measurements
For Use With (Equipment)Thermo Scientific TLD Card Dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Product TypeRadiation Dosimeter Reader
SensitivityDependent on config. Used
Unit SizeEach
3500TLDREADERFull specifications
EachModel 3500 with Heating Temperature Capability of 400°CRequest A Quote
Batch Uniformity±30% from the factory standard
DescriptionModel 3500 with Heating Temperature Capability of 400°C
Dose RangeMeasurement range: 10 µGy to 1 Gy (linear), 1 Gy to 20 Gy (supralinear)
Detection threshold: <10 µGy based on 2.26 standard deviations for 10 sequential readings of an unexposed dosimeter
Dosimeter ReusabilityTypically>500
Dynamic Range7 decades
Flow Rate130 liters/h, subject to external regulation
Heating MethodMultiple, programmable, linear heating cycles include pre-read anneal, acquire and post-read anneal cycles
Height (English)1.85 in.
Height (Metric)47 cm
HumidityFunctions within specification after 24 hour
LinearityBetter than 1%
PMTsThermoelectric PMT cooler for Maximum gain stability
Radiation TypePhotons, Electrons, Neutrons
Reference LightTemperature-stabilized LED
RepeatabilityLess than 2% variation based on one standard
StabilityHV stability: ±0.005% per hour, ±0.02% per 8 hours
Operating Temperature (English)59°F to 104°F
Storage Temperature (English)14°F to 140°F
Operating Temperature (Metric)15°C to 40°C
Storage Temperature (Metric)−10°C to 60°C
Time and Temperature ProfilesHeating temperature capability up to 400°C;Typical cycle time per detector: 30 seconds
Power SupplySelectable, 110/120 VAC ±10%, 60 Hz or 220/240 VAC ±10%, 50 Hz
Warm Up Time30 min.
Weight (English)55.12 lb.
Weight (Metric)25 kg
Width (English)12.6 in.
Width (Metric)32 cm
Ambient Light ExposureFunctions within specifications when exposed to ambient light up to 1000 Lux with cover on the reader
For Use With (Equipment)Thermo Scientific TLD Card Dosimeters, Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories
Product TypeRadiation Dosimeter Reader
SensitivityDependent on config. Used
Unit SizeEach
Showing 3 of 3

The HARSHAW TLD Model 3500 Manual Reader includes a sample drawer for a single element TL detector, a linear, programmable heating system, and a cooled photomultiplier tube with associated electronics to measure the TL light output. Planchet heating incorporates a welded thermocouple for best temperature reproducibility. The operational software, Thermo Scientific™ WinREMS™, which runs on a separate computer, provides the user interface, the reader control and the applications software.

  • Multiple, programmable, linear heating cycles such as pre-read anneal, acquire and post-read anneal cycles.
  • Typical cycle time per detector: typically 30 seconds.
  • Heating temperature capability up to 400°C (standard model) or 600°C (high-temperature version).
  • Thermoelectric PMT cooler for maximum gain stability.
  • Seven decade glow curve acquisition range.
  • Options include glow curve deconvolution software (WinGCF Software), various types of neutral density filters to extend the high measurement range, and TL element specific planchets for best possible reproducibility.
  • Easy to operate, service and maintain.
  • Size: 31 × 32 × 47cm.
  • Weight: 25kg.

Dosimetry Performance Using LiF:Mg,Ti (TLD-100/600/700):

  • Nearly tissue equivalent.
  • Radiation types: photons (E>5 keV), electrons (E>70 keV), neutrons (from thermal energies up to ∽100 MeV, TLD-600 only).
  • Measurement range: 10 µGy to 1 Gy (linear), 1 Gy to 20 Gy (supralinear).
  • Detection threshold: <10 µGy based on 2.26 standard deviations for 10 sequential readings of an unexposed dosimeter.
  • Repeatability: Less than 2% variation based on one standard deviation for 10 sequential measurements of 1 mGy 137-Cs
  • Residual TL signal: <0.2% of reading
  • Fading: <20% in 3 months without thermal treatment; <5% in 3 months using pre-read anneal or glow curve deconvolution software (WinGCF Software).
  • Batch uniformity: ±30% from the factory standard.
  • Reuse: typically >500.

Instrument Performance:

  • Dynamic range: 7 decades.
  • HV stability: ±0.005% per hour, ±0.02% per 8 hours.
  • Linearity: better than 1%.
  • Test light: temperature-stabilized LED.
  • Electrical supply: selectable, 110/120VAC ±10%, 60Hz or 220/240VAC ±10%, 50Hz
  • Nitrogen supply:
    Purified (99.995%), dry
    Pressure: 1.5 to 3kg/cm2
    Flow Rate: 130 liters/h, subject to external regulation
    Note: The use of nitrogen is optional. Absence of nitrogen will result in understated performance.
  • Operating temperature: 15° to 40°C
  • Storage temperature: -10° to 60°C
  • Humidity: Functions within specification after 24 hour exposure to 90% humidity and subsequent 6-hour recovery with use of the nitrogen supply
  • Ambient light exposure: Functions within specifications when exposed to ambient light up to 1,000 Lux with cover on the reader
  • Shock: Withstands a 1-cm drop onto a concrete surface

Ordering Alerts:

Computer requirements: Any commercially available PC system with Windows™ 7, XP, 2000, or NT 4. 32 bit OS only. RS232 strongly recommended. (Please contact your sales representative for approved USB to RS232 converters).

Compatible with:

Thermo Scientific TLD Materials, Thermo Scientific TLD Accessories

Recommended for:

Treatment planning verification, diagnostic dose studies, quality assurance, whole body dosimetry, extremity dosimetry, environmental dosimetry, high dose applications (radiation hardness testing), irradiated food analysis, dating, and many more.