Ralco R 221 ACS DHHS Series, Инструкция по эксплуатации

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MTR 221 ACS - MTR 221 ACS DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
O
PTIONAL
I
TEMS
139
Model R 221 ACS - R 221 ACS DHHS
MT
R
2
21
ACS
-
MTR
2
21
AC
S DHH
S - Optio
nal Ite
m
s
S
UBSTITUTION OF
F
ILTER
M
OVEMENT
P
HOTOCELL
• Disconnect supply.
• Remove the front panel, see Chapter
C
OVER
R
EMOVAL
..
• Disconnect the photocell connector from the elec-
tronic board .
• Unscrew the 2 screws C holding the filter system on
the front plate, see fig. 1
• Take the support together with the filter out from the
collimator.
• Remove the photocell by unscrewing the 2 screws
B , see Fig. 3
• Substitute the photocell with an identical item.
• Remount the support with the photocell.
• Connect the four photocell removed previously.
• Remount the cover and front panel.
Additional variable filtration may be added to the
minimum collimator filtration in the form of an
aluminium disk, 1 mm thickness, with automatic
control via the electronic PCB.
The disk features a hole allowing the passage of
X-rays and includes three filters with the following
filtration values:
• 0: no filtration.
• 0,1 mm Cu (Al eq. 2.5 mm)
• 0,2 mm Cu (Al eq. 5.0 mm)
• 0,3 mm Cu (Al eq. 7.5 mm)
To adjust and/or to change the filter see
RO 305
Additional Variable Filtration description in this Chapter.
ASR003 Board
Characteristics
• Analogical/ Digital interface.
• Vertical SID interface with potentiometers for table and stand, Potter Bucky, (vertical, right,
left) inputs.
• Interface for 5 fixed lateral distances.
• Interface for general controls; e.g., open/close for shutters, tomography.
• CanBus interface.
Description
• Board ASR003 is an extension of the radiological system, providing an interface for the col-
limator to other system devices with analogical signals.
• It operates via CAN BUS with a Ralco proprietary protocol.
• The user end features 32 digital inputs, 8 analogue inputs and 10 relay outputs.
RO 305/1 Additional Variable Filtration
RO 308 External Board ASR003
Fig. 3
Fig. RO 258/1