MOBILETT Plus / - E/ - M
SPR8-215.898.01
Page 20 of 22
Siemens-Elema AB
Rev. 05
01.02
SPS-UD
Solna, Sweden
2 - 20
Display messages
Monitoring the kV- and mA-controls
2
* Note on Err 3, Err 4 and Err 5:
Under the following conditions, the corresponding Err.. message is sig-
naled:
Fig. 1
NOTE:
A change in heating value may be due to the following causes:
1. Measurement error in the kV measuring circuit.
a.
b.
too high + kV
actual
value results in increased heating value
(positive correction)
too low + kV
actual
value results in decreased heating value
(negative correction)
2. Change in generator output.
This may occur when exchanging the inverter or the single tank.
In each case, the heating values must be readjusted and recorded
(refer to P10 and P07 in the service program).
a.
b.
If the generator output is increased, this results in an increase
in heating value.
If the generator output decreases, the heating value will be
decreased.
Any change of the tube current involves a change in exposure time
(mAs = i x t)!
The measured kV must be
Generates when
the measured value
is beyond the
limits during 0.6 ms
0,8 ms
Time
5 kV from the kV
selected after 0.8 ms from
exposure start.
kV