S.E. International Inspector EXP Specifications download pdf (Page 11)

Chapter 4: Common Procedures

Seng the Internal Clock

It is necessary to set the internal clock to properly me stamp the data collecon on your device. We

recommend the clock be set prior to collecng data to ensure a correct me and date in your collected data.

To set the internal clock, enter into the ulity menu, select CLOC, and press set.

1. The seconds are displayed. Use the + and - buons to select the seconds for the clock and press SET to

select your choice.

2. The me will be displayed. The minutes will ash while using the + and - buons to select the desired

minutes and press SET. You will then select the hour and press SET again.

3. The date will be displayed. First set the day and press SET. Then select the month and press SET.

4. The year will be displayed. Select the appropriate year and press SET.

You will now see donE displayed in the Ulity Menu. You can now select another item in the Ulity Menu or

press SET to enter into the normal funcon of the Inspector EXP.

Interfacing with an External Device

The USB jack on the le side of the Inspector EXP provides an interface for use with the USB Observer Soware

Figure 2(10). You can use it to record the counts on a computer, download the recorded data, and calibrate the

instrument. For details, see Chapter 7 Observer Soware.

The following secons give instrucons for several commonly-used procedures. With any procedure, the user

must determine the suitability of the instrument or procedure for that applicaon.

Establishing the Background Count

Normal background radiaon levels vary at dierent locaons, dierent mes, even in dierent areas of the

same room. To accurately interpret the readings you get on the Inspector EXP, it is good to establish the normal

background radiaon count rate for each area you plan to monitor. You can do this by taking a med count. For

more informaon on using the mer, see Taking a Timed Count in Chapter 3.

A 10-minute average is moderately accurate. You can repeat it several mes and compare the results to

establish accuracy. To establish a more accurate average, take a 1 hour med count. If you need to determine

whether there is prior contaminaon, take averages in several locaons, and compare the averages.

Environmental Area Monitoring

You can keep the Inspector EXP in CPM or mR/hr mode whenever you want to monitor the ambient radiaon,

and look at it from me to me to check for elevated readings.

If you suspect an increase in ambient radiaon, use the mer and take a 5 or 10 minute count, and compare

the average to your average background count. If you suspect an increase that is too small to detect with a

short med reading, you can take a longer count (for example 6, 12, or 24 hours).

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S.E. International Inspector EXP Specifications Page 11