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Crosslinking DR 020 Operating Manual

Dosimeter
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Operating manual for dosimeter type DR020
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___________________________________________________________________
ELECTRON CROSSLINKING AB
Sweden - Head office
Skyttevägen 42
SE-302 44 Halmstad
EB_DOS_01_Manual_EN_01.doc
Purpose of the device
Design
Connection
Operation
Calibration
Application
Method of measurement
Principle of measurement
Measuring film
Measured values via the interface
Malfunctions / servicing
Technical data
Telefon/Phone
+46 (0)35 15 71 30
Telefax
+46 (0)35 14 82 06
Germany
Brühlstraße 7
DE-72147 Nehren
Telefon/Phone
+49 (0)7473 920 281
Telefax
+49 (0)7473 920 282
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Summary of Contents for Crosslinking DR 020

  • Page 1 Application Method of measurement Principle of measurement Measuring film Measured values via the interface Malfunctions / servicing Technical data ___________________________________________________________________ ELECTRON CROSSLINKING AB Sweden - Head office Telefon/Phone Germany Telefon/Phone Skyttevägen 42 +46 (0)35 15 71 30 Brühlstraße 7 +49 (0)7473 920 281...
  • Page 2 The reproduction, transmission or use of this document is not permitted without express written authority. Electron Crosslinking AB shall have no liability for any indirect or speculative damages arising from the use of this product. Technical data subject to change.

  • Page 3: Device Design

    1. Purpose of the device This dosimeter is used to measure ionizing radiation in processes such as cross-linking of paints or plastics. As a measurement instrument, it is extremely simple to use: a measuring film is exposed to radiation and then evaluated using the dosimeter in a matter of seconds. The measured value is displayed in kGy.

  • Page 4: Operation

    4. Operation The dosimeter is activated by means of the power switch. The user is then requested to remove any measuring film still in the measuring head and to press any key. Now calibration of the device takes place: the red and green intensities are adjusted to a particular value. Because optical components are subject to drift, you should switch on the device 30 min before use and then recalibrate it after the half hour.
  • Page 5 4.1 Menu 1 / main menu Dose reading, Save, Calibration 4.1.1 T1 Next The T1 key is used to proceed to the next menu. Even though this function does not appear on the display, this key is active. 4.1.2 T2: Save The T2 key is used to save the value that is currently displayed.
  • Page 6 4.5 Menu 5 Choose language 4.5.1 T1 Next The T1 key is used to proceed to the next menu. 4.5.2 T2: Choose language This key calls up the menu that allows you to select a language. The following choices are available: German English...
  • Page 7 6. Application The dosimeter has been designed to perform measurements in the field of electron beam engineering. Nowadays, procedures in electron beam engineering are tested and implemented at an acceleration voltage of 50 keV up to the MeV range. At low acceleration voltages, it is important to measure not only the exact dose, but also the depth dose.

  • Page 8: Principle Of Measurement

    7. Method of Measurement The film holder contains an optical transmitter which has a light emission of max. 635 nm (red) and 565 nm (green). The brightness of the LEDs in the red and green areas can be controlled using two digital /analog converters. The optical receiver, located opposite the transmitter, measures the intensity in both the red and the green areas.
  • Page 9 Quantization error With a dose of 40 kGy and a measured intensity of 1000, the relative quantization error is 0.75 %. With the same dose and a measured intensity of 500, the relative quantization error is 1.5 %. 9. Measuring film Pararosanilin is also UV-sensitive and should therefore not be exposed to sunlight.
  • Page 10 10. Measured values via the interface The device is equipped with a serial interface located on the rear of the device. This allows the stored data to be read into a PC using the Print Memory option. The Windows HyperTerminal program is used for this purpose.
  • Page 11 On the dosimeter DR020, press the "T2: Print Memory" function. The information is printed in the following format: address dose App.factor Foil factor 5D64 048.1 5D68 050.5 5D6C 051.7 5D70 052.7 5D74 055.2 Select Save as from the File menu and place the file into the appropriate directory. This file can imported into a spreadsheet program, for example, for further processing.
  • Page 12 11.2 Service mode 2 If the keys T1 and T2 are pressed at the same time during start-up, the device is switched to service mode 2. This mode displays important data to simplify diagnostics. The instrument-specific calibration factor (App.fact) which compensates for the hardware of different devices can also be set in this mode.
  • Page 13 11.2.1 Menu 1 Toggle LED The T2 key is used to set each LED separately to max. brightness and to display the transmissions: Red channel output value: max. input value: measured intensity Green channel output value: max input value: measured intensity Both channels off 11.2.2 T2 Calibrate The T2 key is used to perform the calibration as in the main menu except with additional...
  • Page 14 Technical data Dimensions: Housing: L x W x H 295 x 135 x 55 mm Height with measuring head: 90 mm Measuring head: L x B x H 40 x 25 x 35 mm Device stands, retractable for tilting at an angle of approx. 23° Weight: 1.90 kg Power supply:...