Midmark Preva - Specifications

Preva Dental X-ray System User Manual, 00-02-1576, Revision ZA1
38
Specifications
Parameter
Description
Line Voltage
AC 110 V to 230 V, 50 Hz or 60 Hz
Line Load
250 V, UL Recognized – It is recommended that branch circuit does
not exceed 15A
Tube Potential
60 kV, 65 kV, 70 kV
Tube Current
4 mA, 5 mA, 6 mA, 7 mA (7 mA is not available at 70 kV)
Irradiation Time
20 ms through 2 s
Maximum Deviation from
Indicated Values
Peak tube potential, maximum deviation: ±5%
Tube current, maximum deviation: ±1 mA
Exposure time: min 20 ms, max. 2 s, max. deviation: ±5%+1 ms
Minimum Source-to-Skin
Distance
20 cm (8 in.)
30 cm (12 in.)
Focal Spot
0.4 mm (per IEC 60336)
Temperatures
Operating
+10 °C to +35 °C (+50 °F to +95 °F)
Storage
-35 °C to +66 °C (-31 °F to +151 °F)
Transport
0 °C to +50 °C (+32 °F to +122 °F)
Atmospheric Pressures
Operating
70 kPa to 106 kPa
Storage
70 kPa to 106 kPa
Transport
70 kPa to 106 kPa
Maximum Altitude
3,000 m (9,843 ft.)
X-ray Beam Dimension
Diameter of 6 cm (2.36 in.) at the end of the 8-inch cone.
Cones with smaller diameter or rectangular beams are available.
Humidity Range
(Operation & Storage)
10 to 80% non-condensing
U.S. Patents
D470237, D469182, D470589, and 6,837,468