Fluke Biomedical 4000M+ - Manual (Page 5)

General Information
Introduction
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1-1
Section 1
General Information
1.1 Introduction
The Model 4000M+ is a self-contained, noninvasive X-ray Test Device. In a single exposure, it
simultaneously measures:
• kVp
• Exposure or Air Kerma
• Exposure Rate or Air Kerma Rate
• Time
The Model 4000M+ features a dual sensitivity preamplifier for compatibility with Radiographic,
Fluoroscopic, and Dental X-Ray Machines. In addition, it is calibrated for both tungsten anode (W/Al) and
molybdenum (Mo/Mo) anode X-Ray tubes, making it suitable for screen film mammography applications.
Its automatic waveform phase determination and extensive diagnostics minimize the potential for error.
The external ion chamber port accepts a variety of accessory ionization chambers for various
applications, including mammography, photo-timer calibration, and input phosphor image intensifier
measurements.
The Model 4000M+ uses proven technology to compute tube potential with +2% accuracy. Five
separate, selectable filter pairs ensure optimum accuracy over the maximum range with minimum filtration
dependence. A separate internal ionization chamber measures tube output. Time is measured with
crystal quartz accuracy. A microprocessor controls the electronics and performs calculations to obtain the
displayed results.