International Medcom Radalert 100, Руководство по эксплуатации

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2. Use the + and – buttons to set the timing period. The timed
period can be for 1 to 10 minutes in one-minute increments,
for 10 to 120 minutes in ten-minute increments, or for 2 to 40
hours in one-hour increments.
3. Press the Set button. The Radalert 100 starts totaling the
counts it registers, and the numeric display is updated each
time a count is registered. The hourglass indicator flashes
during the timed period.
During the counting period, if you want to see how many
minutes remain, press the Set button. The display counts
down from the time setting in hours and minutes to zero. For
example, if the display shows 00:21, 21 minutes remain.
4. At the end of the timed period, the Radalert 100 beeps three
times, and repeats the beeping several times. The number
displayed is the total count.
5. To find the average dose rate for the timed period, divide the
total by the number of minutes.
The average count is in counts per minute. To convert to
mR/hr for Cesium-137, divide by 1000.
6. Move the Mode switch to one of the dose rate modes to
return to normal operation.
If you move the Mode switch to one of the dose rate modes while
the Radalert 100 is taking a timed count, the timed count will stop.
Operating Ranges and Response Times
The following table shows the radiation levels the Radalert 100
measures in each mode and how they are displayed. In some
modes, when radiation levels increase over certain preset levels,
the Radalert 100 uses autoranging, automatically changing to the
X1000 scale. Whenever
X1000 is shown above the numeric
display, multiply the displayed reading by 1000 to determine the
radiation level.