Digital display plug-in module for the Victoreen model 555 integral and rate exposuremeter

Area of Science:

• Medical Physics
• Instrumentation
• Radiological Measurement

Background:

• The Victoreen 555 exposuremeter is a standard instrument for radiation dosimetry.
• Analog meter movements can exhibit nonlinearity, potentially affecting measurement accuracy.
• Data acquisition from analog devices can be cumbersome and prone to error.

Purpose of the Study:

• To describe a digital display plug-in for the Victoreen 555 exposuremeter.
• To enhance the usability and accuracy of radiation measurements.
• To provide a clear, legible numerical readout accounting for all scale factors.

Main Methods:

• Development of a digital readout subsystem.
• Integration of the plug-in with the Victoreen 555 mainframe.
• Implementation of circuitry to circumvent analog meter nonlinearity.

Main Results:

• The digital display plug-in provides clear, legible numerical and dimensional information.
• Probe and range scale factors are automatically accounted for in the display.
• The device successfully circumvents nonlinearity issues inherent in the analog meter movement.

Conclusions:

• The digital display plug-in significantly improves data gathering capabilities for the Victoreen 555.
• This enhancement offers a more accurate and user-friendly method for radiation exposure measurements.
• Minor modifications to the 555 mainframe are required for integration.