PRM-7000 / 8000 / 9000 Users Guide | 11
4.3 Maximum Measurement
This display indicates the Maximum dose rate level that has been measured since the
device was turned on, or since the Average, Maximum, Minimum, Total and Elapsed
Time counters have been reset. This capability provides valuable insight into one-time
events or conditions that occur while the user is away from the device.
When a new maximum is recorded, the PRM Instrument notes the time and date and
stores this information for later viewing by the user.
4.4 Minimum Measurement
This display indicates the Minimum dose rate level that has been measured since the de-
vice was turned on, or since the Average, Maximum, Minimum, Total and Elapsed Time
counters have been reset. This provides useful information as to the minimum value the
device has measured.
NOTE: At low levels of less than 6.00 mR/hr, The Maximum and Minimum are aver-
aged over one minute. At higher levels, the Maximum and Minimum are determined
by measurements recorded every second.
4.5 Total Count Measured
This display indicates the total number of pulses from the Geiger tube recorded by the
PRM Instrument since the device was turned on, or since the Average, Maximum, Mini-
mum, Total and Elapsed Time counters have been reset. The value is uncompensated
and indicates only the number of pulses detected by the device which corresponds to the
number of times the audible click sounds, or the LED blinks.
4.6 Time/Date of Maximum Measurement
When a new Maximum dose rate level is recorded, the PRM Instrument captures the
time and date that the Maximum occurred. This allows the instrument to capture and
report transient maximums in radiation level that may occur within an otherwise normal
background radiation environment. Time format on this screen is 24 hour hh:mm:ss and
the date format is: MM:DD:YY.
4.7 Current Time and Date
This screen displays the time and date of the real time clock/calendar within the PRM
Instrument. Time format is 24-hour hh:mm:ss and the date format is: MM/DD/YY.
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