TAU-N100A

Real Time Optical Fallout Monitor

Pictures

Shows the liquid crystal display (LCD) as it appears immediately after the unit is activated.  The LCD remains active for a short period and then goes into a “sleep” mode to conserve battery power.  The unit “awakes” according to a user- programmed schedule to take a sample which is displayed on the LCD for a brief period.

The On/Off switch is used to activate or deactivate the TAU-N100A.

The Screen Toggle momentary switch is used to switch between alternate screens and user- selectable fields during programming.

If the Terminal Mode momentary switch is active during power-up, the TAU-N100A enters the programming and data retrieval state.

Shows the rear of the TAU-N100A with the hatch containing the silicon wafer assembly.  The wafer is removed for cleaning through this hatch.

A terminal/computer can be connected through the serial port connector.  This interface is used for programming, real time monitoring of the measurements being taken, and retrieval of stored measurements.

The battery charger interface is used to recharge the batteries.  The batteries last for a minimum of 6,000 measurements, which depending on the interval between measurements could be between several days and several months.

This view show the hatch door opened and the silicon wafer removed.  The silicon wafer is removed for cleaning when the measurements show significant obscuration.  The cleaning process is simple, involving the careful wiping of the wafer’s surface with seedless cotton containing a high quality cleaning solution such as alcohol.

This view show the silicon wafer re- installed into the TAU-N100A.