Features
The new Unfors PSD, Patient Skin Dosimeter, represents the latest in today’s technology for radiation protection. The Unfors PSD is used in CT and fluoroscopy procedures to prevent excessive dose usage and consequential patient lesions.
[[li]] Monitors patient dose
[[li]] Audible and visual warnings
[[li]] Small silicon sensors
[[li]] Easy to use
The Unfors PSD can be delivered with one, two, three or four sensors depending on the application. There are four different factory alarm levels set to 25, 50, 75 and 100 % of 2 Gy which is the documented deterministic biological injury level. Accumulated dose can be read in the display. The Unfors PSD sensors have been specially designed to meet the needs of real-time dose measurements on patients. Sensor characteristics give accurate information to the user on when injury risk is imminent. Unfors PSD sensors have a small footprint and are easy to position on several places on the patient’s body. The sensors, cable and instrument can be sanitized with an antiseptic such as propyl alcohol.
Specifications
General
Dose range: 1 μGy – 9999 Gy
100 μR – 9999 R
Start trig level: 10 μGy/s, 60 mR/min
Stop trig level: 5 μGy/s, 30 mR/min
Maximum dose rate: 100 mGy/s, 600 R/min
Reproducibility: 1 %
Reset: Manually or automatic
Power off: Manually or automatic after 5,
10, 30 or 240 (default) min of
inactivity
Disinfections: Sensor, cable and instrument
housing can be wiped off with
propyl alcohol
Power source: Two 1.5 V LR06 (AA) alkaline
Battery life time: 100 hours
Read out 4 digit LCD display with
units and sensor identifi cation
Temperature range: 15 – 35° C, 59 – 95° F
Size (H x W x L) 98 x 82 x 21 mm,
3.9 x 3.2 x 0.8 in
Weight 250 g, 9 oz
Sensor
Expanded uncertainty: &plusm; 6 % at calibration point 90 kVp
Angular dependence: &plusm; 5 % for 45°
&plusm; 10 % for 75°
Bandwidth: 2.4 Hz, 3 dB
Energy dependence:
&plusm; 10 % (60 – 120 kVp)
&plusm; 15 % (40 – 150 kVp)
at 6 mm Al
Temp. dependence: Negligible
Pressure dependence: Negligible
Size (H x W x L) 4 x 15 x 15 mm,
0.15 x 0.60 x 0.60 in
Cable length 2.25 m, 90 in
Alarms
Level 1 25 % of 2 Gy
Level 2 50 % of 2 Gy
Level 3 75 % of 2 Gy
Level 4 100 % of 2 Gy
Buzzer ON or OFF
Flashing diode ON or OFF
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