Test Of Kv-Accuracy - Siemens MOBILETT Plus HP Installation And Setting Instructions Manual

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Test of kV-accuracy

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Requirement:
- The measured kV values, shall be within the limits.
Required measurement devices:
- kV-meter, based on the filter-comparison method, for example PTW-Nomex kV meter.
When measuring the kV non invasive a correction factor from the user manual of the
kV-meter has to be used. If a kV meter is not available and if it is within local laws and
regulations, the measurement can be made with an oscilloscope on D1. KVPEAK - D1
GND with a result of 40 kV/V.
NOTICE
•
For the actual filtration of this MOBILETT, see the test protocol.
If the actual inherent filtration is unknown, the correction shall be made with a reference
value of 5 mm Al.
•
Put the kV meter into operation, see operating instructions for the kV-meter.
•
Place the measurement detector on a table or other. Using the light field, set the detector
in the beam projection, see fig. 4.
•
Set the SID to approx. 50 cm (20"). The SID may vary between different kV-meters.
Fig. 4
MOBILETT Plus HP
Higher filtration results in higher kV values.
SPR8-220.033.01
Rev. 05
Installation and setting
Page 6 of 10
05.01 SPS-UD
2
Siemens-Elema AB
Solna, Sweden