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| 4000M+ X-Ray Test Device. |
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Introduction The Victoreen® X-Ray Test Device, Model 4000M+ does it all. Simply place the instrument in the x-ray beam, make one exposure, and it serially displays kVp Maximum, kVp Average, kVp Effective, dose, and time. The Model 4000M+ then automatically resets for the next exposure. A CsI photodiode pair provide the kVp measurements through five user-selectable filter pairs. This ensures optimum accuracy over the entire diagnostic range with minimum filtration dependence. Exposure measurements are made with a parallel plate ionization chamber located above the filter wheel. Exposure time is measured with quartz crystal accuracy. Plus, a variety of external ion chambers may be connected for even greater flexibility. Specifications Kilovoltage Accuracy: 1 kV Mo/Mo (22 to 35 kVp), (Mammo generators w/30 μ Mo) Range: W/Al Tubes: 27 to 155 kVp, Mo/Mo Tubes: 21 to 50 kVp |
| Time Measured during entire exposure at 90% rise/fall of waveform Accuracy: Within 2% or 2 ms, whichever is greater Range: 1 ms to 10 seconds Exposure Measure during entire exposure; kvp corrected Accuracy: ± 5% Range: 10 mR to 10 R Fluoroscopic rate Measured over one second intervals during fluoro exposure Accuracy: ± 5% Range: 0.5 to 200 R/min Detectors kV CsI/photodiode pair measures x-ray transmission through differential attenuators Time Computed from kV waveform stored in memory against quartz crystal time base Exposure Parallel plate ionization chamber Volume 36 cm³ Window 38 mg/cm², 18.9 cm² polycarbonate Calibration Reference to a NIST traceable voltage divider and a calibrated exposure monitor during irradiation Physical |
| Display 16 character dot-matrix LCD Controls Model 4000+ has five rocker switches - On/Off: Power switch - Radio/Fluoro: Select radiographic or fluoro operation - High/Low: Select for sensitivity - Roll: Roll thru data - Exposure/All: Select exposure only for external ion chamber - Mo/Mo or W/Al: Select anode/filter of x-ray tube Connectors - Power 9 VDC, 500 mA - Scope BNC for oscilloscope connection - RS-232 DB-9 connector configured as DCE. BNC and banana plug for external Ion chamber Power requirements 9 VDC 500 mA external supply. Rechargeable internal Ni-Cd batteries supply more than six hours of continuous service with overnight charge Dimensions 8.5 (w) x 9 (d) x 3 in (h) (21.5 x 23 x 7.6 cm) Weight Approximately 3.5 lb (1.59 kg) HVL set Aluminum filters: 2.3, 1.0, and 0.3 mm Optional Accessories 4000 Toolkit for Excel (Model 4000EXL) Ultra-High Purity HVL Attenuators (Model 07-434): for mammo, set of 6 Carrying Case (Model 4000-69) |
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