PERFORMANCE
Environmental conditions
Operating temperature:
15
E
C to 35
E
C
(30
E
C for 40X9,10-M sensors)
Pressure
60 to105 kPa
Humidity:
Up to 80% RH or 20 g/m
3
Storage Temperature:
-20
E
C to +50
E
C
kV Sensors
40X W Sensors
:
Potential
40 kV - 160 kV
Accuracy
1 kV or 1% of value
Repeatability (COV of 10 150 ms exposures)
0.2kV
Long-term drift:
1 kV for 1 yr
Rotation (normal to source-detector line)
about sensor long axis: 1 kV for 6 º
about sensor short axis: 1 kV for 5 º
Alignment (tube anode-cathode vs sensor long axis)
1 kV for 10º
Width accuracy (2 ms - 5 sec): 0.1% of value + 0.2 ms
Ripple Error (Displayed kVp):
0.8 kV for 10%, 0-to-peak, ripple < 4 kHz
Filtration
kV, uncorrected
0.7kV/mm
kV, manual entry
1 kV
kV, automatic
1 kV 1 to 23 mm Al, 0.030 - 0.695 mm Cu
For combined thicknesses, the Al equivalent thickness is 33 times the Cu
value.
HVL (mm Al)
10% of value + 0.3 mm
Reference conditions:
21 - 23 C
Varian A192M tube (W-Re Anode)
HVL at 70 kV
2.9 mm Al
Anode current:
50 mA, < 1% ripple
Focus - Sensor distance
50 cm
Sensor long axis perpendicular to anode-cathode axis
Sensor plane normal to focus-sensor line
Width measured at 75% of kV waveform
23
