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Easy setup and control
No pressure corrections required
RS-232 port
The 444D Daily Constancy Tool is a single-channel photon and electron beam constancy device. It provides a quick, easy and reliable way of verifying relative beam output on a daily basis.
The 444D Daily Constancy Tool has a diode detector embedded in a unit density plastic phantom to detect radiation output. The 444D Daily Constancy Tool can store up to 10 readings of relative dose, relative dose rate, and irradiation time for each exposure. This data can then be easily read on the units dot matrix display. There is no need to enter the therapy room to gather readings between exposures. A blinking light conveniently indicates when the next exposure is ready.
Once the initial setup is complete, there are no special procedures necessary for this portable, battery operated unit.
Options
Gantry Holders for Varian or Siemens machines
Laser Alignment Cap to align tool with side-wall lasers
Specifications
Dose Rate Range: 1 to 2000 cGy/min
Beam Energy: Photons: 1.25 to 25MV; Electrons: 3 to 25MeV
Field Size: 10 cm sq.
Temperature Dependence: 1% of reading per C°
Long Term Stability: ±1.5% of reading over 60,000 Rads (approximately 6 months of use)
Readings
Relative Dose (machine output) - Relative Dose Rate - Time
Detector: Diode
Power Supply: 4AA alkaline batteries (20 hrs. approx. lifetime)
Dimensions: 4.5 W x 12.5 D x 1 H
Weight: 2 lbs 5 oz
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