Page 38 of 55
USER MANUAL • Owandy-RX AC • 02/2020 • NXACEN160A
User Manual – Owandy-RX AC
Dose in air is:
SOURCE-SKIN DISTANCE
31 cm = 12”
20 cm = 8”
70 kV – 8 mA = 5,5 mGy/s ± 30%
70 kV – 8 mA = 12 mGy/s ± 30%
STEP 3 – Checking the exposure time (s)
The exposure time is measured with a “non invasive” instrument.
SET TECHNICAL FACTORS
Vn ± 10%
NOMINAL VOLTAGE
3%
MAXIMUM VOLTAGE DROP
70 kV
NOMINAL HIGH VOLTAGE
8 mA
NOMINAL CURRENT
3,2 s
SET EXPOSURE TIME
The exposure time measured is 3,2s ±5% or ±20 ms, whichever is larger.