英語翻譯
To take a timed count,follow these steps:
1.With the Digilert 100 operating,set the Mode switch to Total.The display shows SET,the hourglass,and the most recent timing period used.The first time you use the timer,the setting is 00:01,which means one minute.
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 1 to 40 hours in one-hour increments.
3.Press the Set button.The Digilert 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 Digilert 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 Digilert
100 is taking a timed count,the timed count will stop.
Using The Alert
The Alert can be set in mR/hr or cpm.When using Utility Menu option #2 to switch units of measurements,the alert is reset to the default alert level of .1 mR/hr (1.0 mS/hr).Once the alert threshold is reached the beeper will sound until the alert is deactivated,or the radiation level drops below the set alert threshold.
1.To set the Alert,press the "SET" button on the end panel.The "ALERT"
icon (radiation symbol) and the "SET" icon are displayed.
2.Use the "+" and "-" buttons to adjust the display to the desired level.
3.Press the "Set" button once to retain the setting in memory.Then press it again to turn the alert mode on.The "ALERT" icon is now displayed to indicate the instrument is operating in the Alert mode.
4.To use the previous alert setting,press the set button twice.Now the alert mode is on.
5.To deactivate the Alert mode,press the "Set" button again.The "ALERT"icon is no longer displayed.