• The Model 53-1 Scintillation Portal Monitor is used for Beta/Gamma radiation monitoring of personnel. It is designed to detect very low levels of radiation coming from personnel who walk through the portal. The portal frame incorporates an array of five plastic scintillation detectors positioned around the frame and base. One dectector is mounted above the portal opening, and two detectors are positioned on each side. To facilitate repair, all detectors are the same size. The electronics are microprocessor-based for ease of setup and reliability. The electronics are located in a key-locked, swing-down chassis. Parameters are thus protected from inadvertent or unauthorized change. Individual LEDs (Light Emitting Diodes) mounted in the frame indicate the specific alarm location. Status LEDs above the portal opening indicate count-cycle status. Audible signals accompany the LEDs for additional indication.

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