Radcal Mdh Industries Inc. Model 1015 X-ray Monitor

US $430

Swanton, Vermont, United States
Jun 20th

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Radcal MDH 1015 Series X-Ray Monitor With 10X5-6 is a General Purpose in Beam Chamber 10X5-6 is a General Purpose in Beam Chamber (coating chipping off, see pictures) Has batteries and powers up fine, last calibrated in 2009, calibration paperwork included From the manufacturer website: The MDH 1015 is a unique instrument in that it can accurately measure exposure time based on the accuracy specifications supplied by the manufacturer and the measurement basis (bases) used by them to arrive at their accuracy specifications. These measurements could be made with other instruments, but the MDH 1015 combines functions that would necessitate several instruments. When the Center for Devices and Radiological Health (formerly the Bureau of Radiological Health) initiated a diagnostic x-ray compliance testing procedure, there was a need for a more specialized instrument to conduct this testing. The instrument used prior to the development of the MDH 1015 X-ray Monitor was an ion chamber instrument with the following features: an ion chamber attached to a cable, an analog (needle) meter with one numerical range (ranges could be changed by means of a selector switch), and no exposure timing option. The MDH 1015 utilizes a current-to-frequency converter to measure exposure. When the ionization chamber is exposed to radiation, the ionization of air molecules in the chamber establishes a current in the instrument. The current-to-frequency converter measures the current and generates electrical pulses based on the amount of current. The higher the current from the ion chamber, the higher the frequency of the pulses emitted from the current-to-frequency converter. The MDH 1015 employs a LCD (liquid crystal display) readout for the numerical exposure value and LED (light-emitting diodes) for range indication. The LCD on the unit displays three digits with a decimal point. These three digits are the most significant digits for each measurement. The MDH 1015 can, for example, go from reading 998 mR/minute to 1.02 R/minute with the autoranging feature. On an instrument without autoranging, the 1.02 would most likely be off the scale. The MDH 1015 design, together with the Radcal Gold Standard ion chambers, the FDA is provided with unmatched performance, accuracy, ease of use and reliability in conducting compliance procedures on most radiation-emitting products