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Instruction Manual
DIAMENTOR E

- 17 -

Technical Data

[D151.131.0/3]

Chamber:

PTW type B, type no. 57523

Filtration of the chamber:

equivalent to 0.2 mm Al

Transparency of the chamber:

> 70 %

n

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17

Summary of Contents for DIAMENTOR E

Page 1: ...reiburg Loerracher Stra e 7 D 79115 Freiburg FAX E Mail 49 761 490550 49 761 49055 70 PTW PTW DE Registergericht Freiburg HRB NR 1673 Gesch ftsf hrer Dr Edmund Sch le Dr Christian Pychlau Instruction...

Page 2: ...id at printing date All rights are reserved for devices circuits techniques and names appearing in the manual No part of the technical documentation may be reproduced without written permission from P...

Page 3: ...ents Safety Instruction to avoid electrical hazard The product is a device of IEC 601 protection class II Before connecting the device to the power line make sure that line voltage and frequency are e...

Page 4: ...Connection and Care of the Ionization Chamber 9 6 Adjusting the DIAMENTOR E 10 6 1 Adjustment during the Installation 10 6 2 Checking the Calibration after Installation 10 7 Checking the Stability 12...

Page 5: ...ctrometer with built in display connection cable and separate power supply The area of the ionization chamber must always be bigger than the cross section of the beam The ionization chamber automatica...

Page 6: ...ecommended that the PTW power supply T99021 or T99008 is used For a mains voltage of 230 V AC it is recommended that the PTW power supply T99009 or T99008 is used If the power outlet is different from...

Page 7: ...is pressed a charged capacitor is connected to the amplifier in put This results in a well defined number of counts The status of the counter after this proce dure allows to estimate the response of t...

Page 8: ...er into the guides found a most light beam diaphragms Both types of chambers are 70 transparent to visible light and do not impair the use of the light beam diaphragm The ionization chambers present a...

Page 9: ...dings The metal parts of plug and socket are connected to the outer shielding which has mass potential When installing the cable it must be sure that plug and socket of the cable do not touch metallic...

Page 10: ...ed Repeat this procedure until the correct value of nc is displayed The RESET button must be pressed before each test 6 2 Checking the Calibration after Installation During the factory calibration the...

Page 11: ...be placed in the reference plane e A comparison of the dose area product as indicated by the DIAMENTOR E with that calculated from the reference dosemeter dose times area should then be made at a ran...

Page 12: ...ely 1 second and then release it By doing so an amount of charge is fed into the amplifier This amount of charge is constant within 1 If the sensitivity of the DIAMENTOR E has not changed the check re...

Page 13: ...r each transport over longer distances 8 2 Checking the Leakage The reading of the DIAMENTOR E may be affected by leakage current If a not irradiated ionization chamber causes a reading on the display...

Page 14: ...the delivered screws into the wall and make sure that they have a perpendicular distance of 140 mm Please make sure that the maximum distance between the wall and the head of the screw is 6 mm Now yo...

Page 15: ...to chapter 7 every second year If leakage occurs that can not be fixed by the drying procedure described in chapter 8 1 a check of the DIAMENTOR E chamber cable and chamber should be performed First...

Page 16: ...me 1 s Overall uncertainly of the measuring system according to DIN 6819 25 Accuracy of the display 3 1 digit Mains 115 V 230 V AC 10 15 50 60 Hz 3 Hz with separate power supply Power supply 15V DC 30...

Page 17: ...Instruction Manual DIAMENTOR E 17 Technical Data D151 131 0 3 Chamber PTW type B type no 57523 Filtration of the chamber equivalent to 0 2 mm Al Transparency of the chamber 70 n...

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