Instruction Manual
DIAMENTOR E
- 8 -
Description and Mounting of the Ionization
Chamber
[D151.131.0/3]
4
Description and Mounting of the Ionization Chamber
The standard ionization chamber type B (no 57523) has the outer dimensions 17 cm x 18.5 cm
x 1.7 cm for a maximum diaphragm opening of 14.5 cm x 14.5 cm.
On special request the chamber type A (no 5754) can be supplied. This chamber has the outer
dimensions 21 cm x 18.5 cm x 1.7 cm for a maximum diaphragm opening of 18 cm x 18 cm.
Guide rails of the appropriate size are fitted to the ionization chamber to enable the user to slide
the chamber 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 an additional beam filtration of approximately 0.2 mm Al
equivalent according to DIN 6863 part 2. Further information about the ionization chambers
can be extracted from the data sheets.
The ionization chamber is connected to the DIAMENTOR E via cable type K3S. This cable
has an inner conductor which is connected to the collecting electrode, a first inner shield
connected to the guard potential, a second little shield connected to the polarizing voltage of +
500 V and a third outer shield connected to earth. The plugs and sockets of the cable are also
connected to the outer shield (earth).
