Radiation Alert AM-7149 User manual

S.E. Internaonal, Inc. P.O. Box 39, 436 Farm Rd. Summertown, TN 38483 USA
1.800.293.5759 | 931.964.3561 | Fax: [phone]
www.seintl.com | radia[email protected]om
®
Radiation Alert®
Area Monitor

2
Contents
Chapter 1: Introducon 3
Precauons 3
Chapter 2: Quick Start 4
Chapter 3: General Operaon 5
The General Operaon Screens 5
The Main Screen 5
The System Info Screen 5
Display of Alarms 5
Chapter 4: Selecng Base Units of Measurement 6
Chapter 5: Connecng Relays and Triggers 6
Chapter 6: Seng The Alarm Levels 7
The Set Alarm Levels Screen 7
The Set Indicators Screen 7
Chapter 7: Ethernet Conguraon 8
The Set Communicaons Screen 8
Chapter 8: Area Monitor PC Soware 8
Installing the Area Monitor Server PC Soware 8
Area Monitor Soware Menu Items 8-9
Help Menu 10
View Detail Window 10
Exporng Data 10
Loading A Floor Plan 10
Deleng Units from Area Monitor Server Soware 11
Acknowledging Alarms and Warnings 11
How to Send Alerts Via Email and Text Message 12
Soware Alerts 12
Hardware Alerts 13
Chapter 9: Calibraon Sengs 14
The Area Monitor Calibraon Screens 14
Accessing The Calibraon Sengs Screen 14
The Set High Voltage Screen 14
The Set Threshold Screen 15
The Set Dead Time Screen 15
The Set Cal Constant Screen 16
Setup and Calibraon Sequence 16
Chapter 10: Unit Conversions 17
Radiaon Measurement Units 17
Converng CPS to mR/hr 17
Chapter 11: Glossary of Common Terms 18
Appendix A: Technical Specicaons 19
Appendix B: Limited Warranty 20
Appendix C: Relays and Triggers Technical Info 21
Appendix D: How to Send a Text Message Via Email 21

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Chapter 1: Introducon
The Radiaon Alert® Area Monitor is one of the most user friendly, all inclusive, state of the art radiaon area
monitors available. The easy to use interface is an intelligent resisve touch screen display featuring a large 5
digit LED readout.
It comes with either an internal or external detector and free soware for monitoring every Radiaon
Alert® Area Monitor on your network. Includes user selectable warning indicators for low and high radiaon
alarm levels, low baery, and detector failure. All the sengs are stored internally, even when power is
disconnected.
Precauons
To keep the Area Monitor in good condion, handle it with care, and observe the following precauons:
• CAUTION: Never touch the Area Monitor or the external detector to a surface that may be contaminated.
You may contaminate the instrument.
• Do not get the Area Monitor wet. Water can damage the circuitry.
• Do not put the Area Monitor in a microwave oven. It cannot measure microwaves, and you may damage
it or the oven.
• This instrument may be sensive to and may not operate properly in radio frequency, microwave,
electrostac, and high electromagnec elds.
• In the event of exposure to high stac discharge, which may result in the screen going blank, please
restart the unit to resume normal funon.
• Do Not connect or disconnect an external probe to the base unit while the Area Monitor is powered on.

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Chapter 2: Quick Start
1. If you are using an external detector, ensure that the
unit is powered o before connecng the detector to the Area
Monitor with the included C to C cable. (If your Area Monitor has
an internal detector, skip this step and proceed to step 2.) Note the
Maximum Cable Lengths for GM Probes is 100 and for Scinllaon
Probes is 50
2. Connect the included +12VDC power supply into the right
side of the Area Monitor, located to the le of the power switch.
Then plug the power supply into an electrical outlet.
3. Once you have connected the probe and power, change the
Power switch to the ON posion. The power switch is located on
the boom of the Area Monitor to the le of the Ethernet jack.
4. The Area Monitor will quickly go to the start up screen
while the system boots up. It will take approximately 30 seconds to
nish the boot process.
5. Aer the boot process has been completed, the main
screen will be displayed and the Area Monitor is now operaonal.
The display will update to show the current radiaon rate within a
few seconds.
7. To silence or acknowledge any alarm, tap the “ALARM”
buon that appears towards the lower center of the screen when
an alarm has been triggered.
6. To see details of the system set up, tap the “System…”
buon on the touch-screen display.

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The General Operaon Screens
The Radiaon Alert® Area Monitor has two separate screens for general operaon of the unit; The Main Screen
and the System Info Screen. In order to enter the System Settings, press "System". The Default Passkey is 1234.
The Main Screen Figure 3(1)
The Main Screen is divided into two general secons. The top
two thirds displays the current radiaon rate. The lower secon
displays the units used, voltages of both the external power and
the internal baery, and the “System…” buon. This area is
also used to display alarm informaon and provide a buon to
acknowledge and/or silence current alarms.
The System Info Screen Figure 3(2)
Pressing the “System” buon will open the system informaon
screen.
This screen displays several key system parameters. They cannot
be edited from this screen. The upper right corner displays the
current radiaon rate. All alarms are sll acve and funcon as
normal while this screen is displayed.
Press the “Back…” buon to return to the main screen.
Display of Alarms Figure 3(3)
There are three alarm types:
Hardware Fail Low High
Soware Fail Radiaon
Warning
Crical Radiaon
Alert
The Fail condion occurs when the incoming count rate is lower than the entered set point, which is normally
set to some fracon of the ambient background. The Fail alarm indicates the Area Monitor is not funconing
properly (e.g. the detector has failed or has been disconnected). To silence or acknowledge any alarm, tap the
“ALARM” buon that appears towards the lower center of the screen. Once the alarm has been acknowledged,
the horn will stop and the strobe will connue to ash unl the levels fall below the alarm set threshold. Note:
By default, the fail alarm is deacvated.
Chapter 3: General Operaon
Figure 3(1)
Figure 3(2)
Figure 3(3)

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Chapter 4: Selecng Base Units of Measurement
The Set Base Unit Screen Figure 5(1)
The Base Unit sets the units of measurment that will be used
for the Area Monitor display and the alarm set points. From the
calibraon Sengs screen, tap the “Base Unit…” buon to open
the Set Base Unit screen
Tap the radio buon next to the desired Base Unit, and the
displayed rate will immediately be converted to that unit. The
displayed value updated within 2 seconds . When nished, tap
the “Back…” buon to return to the Calibraon Sengs screen.
The Base Unit also determines what MINIMUM subunit will be displayed. For example, if the base unit is mR/h
and the radiaon eld on the detector is 80 µR/h, the displayed value will be 0.1 mR/h.
Figure 5(1)
DB-9 Relay Connector
The Radiaon Alert Area Monitor can interface with external
triggers and external strobes/horns via the DB-9 relay connector,
located on the boom of the unit. See “Appendix C: Relay and
Triggers Technical Info” for more informaon.
Connecng The Remote Alarm
Connect the remote alarm with a standard serial cable by
plugging the female end of the cable into the boom of the area monitor and the male end into
the boom of the remote alarm. Once the unit is connected, you can set alarm response sengs in the Set
Alarm Indicators screen. Note: All alarm indicators can be modied directly on the Area Monitor or via the Area
Monitor PC soware.
To enter the set alarm indicators screen (Figure 6(2)), use the included pin, a paper clip, or another small
object to press the recessed buon on the boom of the Area Monitor. This will cause the Passkey Screen to
display: Figure 4(1). Enter your passkey and select the set buon, then select the Indicators buon to open the
Set Alarm Indicators screen. The strobe and siren sengs only apply to the local unit. The relays control the
remote alarm, and the remote alarm’s strobe and audio sengs are built into the alarm.
Assigning any alarm to relay A will cause the audible alarm to sound and the strobe light to ash, without
pause when triggered in the remote alarm. Relay A is generally intended for the high alarm.
Relay B will cause the audible alarm to cycle on and o for about one second each when triggered in the
remote alarm. The strobe will ash connuously. Relay b is generally intended for the low alarm.
Relay C will cause the audible alarm to make a short “blip” about once per second when triggered in the
remote alarm. The strobe will ash connuously. Relay C is generally intended for the fail alarm.
Chapter 5: Connecng Relays and Triggers
Figure 6(2)

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Chapter 6: Seng The Alarm Levels
The Set Alarm Levels Screen Figure 6(1)
The Set Alarm Levels Screen is used to set the levels at which the
three alarms are triggered. From the Calibraon Sengs screen,
tap the “Alarms…” buon to open the Set Alarm Levels Screen.
Tap the radio buon next to the alarm type to be set. Use the
keypad to enter the desired Alarm Level. Any value, including
fraconal, may be entered. The modied Alarm Level(s) will not
be applied unl the “Set” buon is tapped, at which point the
display will return to the Calibraon Sengs screen. Tap the “Back…” buon instead to cancel any modied
value(s) and return to the Calibraon Sengs screen.
The Fail alarm sets the level below which an instrument failure is indicated. The Low Alarm is intended for use
as a warning level, and the High Alarm is intended as a true level of interest.
The units used for the Alarm levels are determined by the Base Unit seng. If the Base Unit is changed the
alarm sengs will not be corrected. For example, if an alarm level of 100 mR/h is set and then the base unit is
changed to µR/h, the actual applied alarm value will become 100 µR/h.
Seng any Alarm Level to zero will disable that alarm.
NOTE: If you change the unit of measurement, you will need to reset your alarms with the current unit of
measure.
The Set Indicators Screen Figure 6(2)
The Set Indicators screen is used to set which annunciators are associated with the three alarms. From the
Calibraon Sengs screen, tap the “Indicators…” buon to open
the Set Indicators screen.
For each alarm type, tap the associated radio buons to trigger
one of three relays (accessible through the DB9-M connector on
the boom of the Area Monitor), ulize the strobe light on the
front of the Area Monitor, and to set the siren to sound fully,
use an intermient paern (1 second on, 1 second o), or be
disabled.
The modied Alarm Indicators will not be applied unl the “Set” buon is tapped, at which point the display
will return to the Calibraon Sengs screen. Tap the “Back…” buon instead to cancel any modied value(s)
and return to the Calibraon Sengs screen.
For informaon about seng up text and email alerts for your alarms, please refer to the “How to Send Alerts
Via Email and Text Message” secon on page 12 of Chapter 8.
Figure 6(1)
Figure 6(2)

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Chapter 7: Ethernet Conguraon
The Set Communicaons Screen Figure 7(1)
In addion to the touch screen interface, the Area Monitor
can communicate with a PC using USB and/or Ethernet and
the included Area Monitor PC Soware. From the Calibraon
Sengs screen, tap the “Comms…” buon to open the Set
Communicaons screen.
Tap the appropriate radio buon to enable the Ethernet and or
Serial (USB) funconality. For Ethernet, the IP address of the PC
to which data will be sent must be specied on this screen. The modied Communicaons Sengs will not be
applied unl the “Set” buon is tapped, at which point the display will return to the Calibraon Sengs
screen. Tap the “Back…” buon instead to cancel any modied value(s) and return to the Calibraon Sengs
screen.
Figure 7(1)
The Area Monitor Server Soware enables users to remotely monitor and congure the Radiaon Alert Area
Monitor via USB or Ethernet, view the area monitors in real me, export collected data, and change the
sengs of the unit.
Installing the Area Monitor Server PC Soware
There is no addional charge for the Area Monitor Server Soware. It can be downloaded at seintl.com/area_
monitor_soware. Once you have downloaded the installer to the PC you would like to install the soware on,
double click the exe le to begin your soware installaon. Follow the on-screen prompts unl the install is
complete.
Area Monitor Server Soware Menu Items
File Menu
Exit
To exit the soware, click EXIT in the File Menu.
View Menu
Floor Plan
To load an image of your oor plan, go to View > Floor Plan to open the Floor Plan window. From here, you can
place the area monitors listed in the main window of the Area Monitor Server Soware on a customized map
you can load into the soware. Accepted le formats for oor plan images are jpg (jpeg), png, bmp, and 
les.
Chapter 8: Area Monitor PC Soware

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Lost Connecon Status. Once it has lost a connecon, you can hide it from being
displayed in the main screen.
Server IP Address
Shows the IP address for the computer with the Area Monitor Server Soware installed.
Hide Unconnected
In the event that you have lost a network connecon or change the serial number of the area monitor
connected to the soware, the Area Monitor Server will lose the connecon to the previous serial number of
the area monitor and create a new area monitor in the soware window. Aer a unit fails on the network, or
the network connecon to the unit fails, it take approximately 5-10 seconds for the area monitor soware to
register the lost connecon. If you changed the serial number of the area monitor, the previous sengs will
appear as an area monitor that has a lost connecon. To remove the one listed with the older sengs, go to
View > Hide Unconnected.
Calibraon and Sengs
The Calibraon and Sengs screen is used to
change the High Voltage, Threshold, Dead Time, Cal
Constant, IP Address, Alarms, Units, Serial Number,
and Communicaon sengs.
You can access the Calibraon and Sengs Screen
two ways. For both, select the row in which the
area monitor is listed in the main window. An arrow
to the le side of the row will indicate you have
selected the correct unit.
1) Select View > Calibraon and Sengs
2) Right Click on the row and then click on
Calibraon and Sengs.
NOTE: Be sure to set your unit of measurement rst. When changing units of measurement, if you have
already set the alarm levels, then the same numeric value will be assigned to the new unit of measurement.
For example, if the alarm level is set at 300 CPM (Counts Per Minute) and then the units of measurement are
changed to mR/hr, then the alarm seng will change to 300 mR/hr. The numeric value stays the same, but
the unit of measurement changes. NOTE: If you change the unit of measurement, you will need to reset your
alarms with the current unit of measure.

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Help Menu
Open Help File
Opens a searchable help le for answering basic quesons about the use of the soware.
About RSA Area Monitor Server Soware
Opens a window that shows the version number of the soware, technical support contact, and the locaon of
the les on your computer that are created when each new area monitor is added or changed in the soware.
View Detail Window
The View Detail Window displays a histogram of the
collected data, the current count rate, the status of
the connecon, the serial number, and the IP address
of the unit. It is also used as a means of collecng
data, seng the data logging frequency, and exporng
the data received from the area monitor to a text le.
You can also select how frequently to log the data in
the Data Opons menu, located in the lower right
corner of the View Detail screen.
Exporng Data
You can select the last hour, the last day, the last week, or the last month to export, as well as custom date
ranges to export. Exporng data is located at the boom of the View Detail screen just below the data opons.
Loading a Floor Plan
To load an image of your oor plan into the Area Monitor Server
Soware, open View > Floor Plan to open the oor plan window.
Click the Load Floor Plan Image buon, select the image of your
oor plan, and click Open.
You will now see your oor plan image in the oor plan window.
There will also be green square icons (connected area monitors) or
purple square icons (lost connecon) that represent each monitor
on the network. To drag them to the proper posion on the oor
plan map, scroll over the small box in the upper le corner of each
icon and hold down the mouse buon to drag them to the desired
posion on the oor plan map. Once you have placed them where
you want them on the oor plan, check the Lock Monitor Locaons
check box in the upper le of the Floor Plan window. This will
ensure that the locaons of the area monitors on the oor plan
map will not be moved accidentally.

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Deleng Units from the Area Monitor Server Soware Permenently
In order to permanently delete any old area monitors in the Area Monitor Server window, you will need to de-
lete the conguraon les created by the soware on your computer. To do this, go to the Help menu and click
About. The about screen will contain the locaon of the folder on your computer where all of the conguraon
les are stored. Click on the address located at the boom of the about screen tled “User Data Locaon”. This
will open the folder and you will see the various folders created by the Area Monitor Server soware for each
monitor on your network.
Delete any of the folders you want to permanently remove from the area monitor list, along with the GuiState
le. Empty the recycle bin and restart the Area Monitor Server soware.
Acknowledging Alarms and Warnings
In the event that an area monitor alarm or warning, the corresponding row in the main screen will show the
state of the event in the status column. When the status of an alarm becomes acve, the user can acknowl-
edge the alarm by clicking the Acknowledge buon to the right of the alarm status.
Once you have Acknowledged an alarm from the Area Monitor Server Soware screen, the area monitor horn
will stop at the unit locaon and the buon state will change to Acknowledged in the soware. If the rate
drops below the alarm level, then the alarm will reset and the strobe will stop. This means that if the alarm is
triggered and acknowledged and the alarm goes o again, the rate has dipped below the alarm threshold and
has risen above the alarm level again. In other words, the rate is hovering around the set alarm level.
The Status has ve dierent states; OK, Monitor Failure Detected, Radiaon Warning, Crical Radiaon Alert,
and Lost Communicaon.
Monitor Failure Detected
In the event that the area monitor reaches the threshold set for the monitor failure, the Monitor Failure Alarm
will appear in the status column of the soware.
Radiaon Warning prior to Acknowledge buon click
Radiaon Warning aer Acknowledge buon click

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Radiaon Warning (Low Alarm on the Touch Screen)
The Radiaon Warning is the low alarm threshold. When the rate gets above the set Radiaon Warning, the
unit will respond with the sengs used in the Set Alarm Indicators.
Crical Radiaon Alert (High Alarm on the Touch Screen)
The Crical Radiaon Warning is the high alarm threshold. When the rate gets above the set High Alarm, the
unit will respond with the sengs in the Set Alarm Indicators.
Lost Communicaon
In the event that the area monitor has lost connecon with the network and/or the area monitor server for a
period of 10 seconds, the Lost Connecon in the status window will appear.
How to Send Alerts Via Email and Text Message
The Radiaon Alert® Area Monitor has the ability to send alert messages via text or email in the event an alert
is triggered. There are two dierent forms of alert sengs. One for the soware, which requires the soware
to be running on the computer connected to the Area Monitor. And one for the hardware, which programs
the alert nocaons to be sent directly into the Area Monitor itself, which does not require the soware to
be running at the me of the alert. Both require that the Area Monitor be connected to the network and have
access to the internet.
Soware Alerts
To set the Soware Alert, in the main window of the Area Monitor Server Soware, click on the View menu
and select “Soware Alert Rules”. This will open the Alert Rules window. The Alert Rules window enables the
user to set up dierent responses to dierent alert levels and direct the nocaon to the appropriate person.
By default, the rst Rule Name is tled “Send Alert”, however, you can
change the Rule Name to your desired seng.
Seng Up To Send An Alert
1) The “When Monitors” eld will list all of the Area Monitors connected to
the server soware. Select the Area Monitors that you would like to set up
to send alerts.
2) Select the alert warnings for which
you would like to recieve alerts under
“Change Status To:”
3) Enter the email address(es) you
would like to recieve the nocaons. If you would like to send a text
instead of an email, use an SMS to email gateway. (For more informaon
on SMS to email gateways, please refer to Appendix D on page 21.)
4) By default, the Area Monitor Server Soware uses the S.E.
Internaonal mail servers to send an alert from AreaMonitorAlert@
seintl.com. If you would like to congure the alerts to use your own
email server, click “Congure Alert Sender” and enter the appropriate
sengs for your email server.

13
Hardware Alerts
To set the Hardware Alert, in the main window of the Area Monitor Server Soware, click on the View menu
and select “Calibraon and Sengs”. From the Calibraon and Sengs window, click the “Hardware Alert
Sengs” to open the “Area Monitor Alerts” window.
Where as the “Soware Alert Rules” enable you to
setup a number of alert rules, the hardware “Area
Monitor Alerts” enables you to congure a single
alert rule that will be sent via the Area Monitor.
However, unlike the “Soware Alert Rules”, the
Hardware Alerts do not require that the Area
Monitor Server Soware be running to send them.
All that is required is for the Area Monitor to be
plugged into your network and provided with
internet access.
Seng Up To Send An Alert
1) Select the alert warnings for which you would
like to recieve alerts under “When Monitor Chages
Status To” by clicking the coresponding check box.
2) In the “Send Emails To: text box, enter the email address(es) you would like to recieve the nocaons. If
you would like to send a text instead of an email, use an SMS to email gateway. (For more informaon on SMS
to email gateways, please refer to Appendix D on page 21.)
3) By default, the Area Monitor Server Soware uses the S.E. Internaonal
mail servers to send an alert from Ar[email protected]. If you
would like to congure the alerts to use your own email server, click
“Congure Alert Sender” and enter the appropriate sengs for your email
server.

14
The Area Monitor Calibraon Screens
The Radiaon Alert® Area Monitor has ve separate screens for
calibraon of the detector in use with the unit. Each of these
can be accessed via the Calibraon Sengs Screen: The Set High
Voltage Screen, The Set Threshold Screen, The Set Dead Time
Screen, and The Set Cal Constant Screen.
Accessing The Calibraon Sengs Screen Figure 4(2)
All calibraon sengs can be modied directly on the Area
Monitor without requiring the use of the Area Monitor PC
soware. To enter the calibraon and sengs screen, use a
paper clip or other small object to press the recessed buon on
the underside of the Area Monitor. This will cause the Passkey
Screen to display. Figure 4(1)
Enter the passkey (default is 1234) then press the “Set” buon.
If the passkey is correct, the Calibraon Sengs screen will be
displayed. (Note: the passkey can only be changed using the
soware, with the Area Monitor connected to the PC through the
USB or Ethernet ports.) Figure 4(2)
The Set High Voltage Screen Figure 4(3)
From the Calibraon Sengs screen, tap the “High Voltage…”
buon to open the Set High Voltage screen.
Use the keypad to enter the desired high voltage. Any values,
including fraconal, may be entered. The modied high voltage
seng will not be applied unl the “Set” buon is tapped, at
which point the display will return to the Calibraon Sengs
screen. Tap the “Back…” buon instead to cancel any modied
value and return to the Calibraon Sengs screen.
Chapter 9: Calibraon Sengs
Figure 4(1)
Figure 4(2)
Figure 4(3)

15
Note that the High Voltage has a maximum of 1200 volts. If a value higher than this is set, 1200 V will instead
be applied
The Set Threshold Screen Figure 4(4)
The threshold sets the minimum size a detector pulse must be, in units of mV, in order to be registered as a
count. From the calibraon Sengs screen, tap the “Threshold…” buon to open the Set Threshold screen.
Use the keypad to enter the desired threshold. Any integer value may be entered. The modied threshold
seng will not be applied unl the “Set” buon is tapped, at which point the display will return to the
Calibraon Sengs screen. Tap the “Back…” buon instead to cancel any modied value and return to the
Calibraon Sengs screen.
The threshold can be set between 0 and 2000 mV . If a value higher than 2000 mV is set, 2000 mV will instead
be applied.
If the threshold is set too low, excessive counts (due to electronic noise) may occur. If it is too high, counts may
be missed. In gamma scinllaon detectors, a threshold seng that is too high could also reduce the response
to low-energy gamma radiaon. Generally, a seng of approximately 50 mV is appropriate.
The Set Dead Time Screen Figure 4(5)
Dead me is used to correct count rates for pulses that are
“missed” due to pile up (in the case of scinllaon detectors)
or from gas recombinaon me (in the case of GM detectors).
Dead-me correcon keeps responses linear over the enre
useful range of radiaon intensies. From the Calibraon
Sengs screen, tap the “Dead Time…” buon to open the Dead
Time screen.
Use the keypad to enter the desired dead me. Any value,
including fraconal, may be entered. The modied dead me seng will not be applied unl the
“Set” buon is tapped, at which point the display will return to the Calibraon Sengs screen. Tap the
“Back…” buon instead to cancel any modied value and return to the Calibraon Sengs screen.
There are no restricons on values to which the dead me can
be set. However, note that the absolute maximum count rate
that can be displayed is equal to 1/dead me.
Generally, scinllaon detectors have dead mes in the range of
1 to 4 µSec while GM tubes have dead mes in the range of 10 to
100 µSec.
Seng the Dead Time to zero will disable dead-me correcon. Figure 4(5)
Figure 4(4)

16
The Set Cal Constant Screen Figure 4(6)
The Calibraon Constant is a conversion factor used to convert
the detector’s count rate into units of exposure or dose rate.
From the calibraon Sengs screen, tap the “Cal Constant…”
buon to open the Set Cal Constant screen.
Use the keypad to enter the desired Cal Constant. Any value,
including fraconal, may be entered. The modied Cal Constant
seng will not be applied unl the “Set” buon is tapped, at
which point the display will return to the Calibraon Sengs
screen. Tap the “Back…” buon instead to cancel any modied value and return to the Calibraon
Sengs screen.
The Cal Constant is usually determined by exposing the detector to a known radiaon eld (in units of mR/h)
of about 10 to 20% of the maximum value the detector is capable of detecng, nong the count rate in cps,
and dividing cps by mR/h.
The Set Calibraon Date Screen Figure 4(7)
The Calibraon Date is used to set the Cal Date displayed in the
System screen. From the calibraon Sengs screen, tap the “Cal
Date…” buon to open the Set Calibraon Date screen.
Use the keypad to enter the Calibraon Date. Any value may be
entered and no checking is performed regarding format. The
modied Calibraon Date will not be applied unl the “Set”
buon is tapped, at which point the display will return to the
Calibraon Sengs screen. Tap the “Back…” buon instead to
cancel any modied value and return to the Calibraon Sengs
screen.
Setup and Calibraon Sequence
1. Disable alarms by seng all three alarm levels to zero.
2. Set threshold and high voltage to appropriate values, generally with the Base Unit set to cpm or cps.
3. Determine and set the Dead Time for the detector in use.
4. Determine and set the Calibraon Constant for the detector in use.
5. Set the Base Unit to the desired minimum unit of measure.
6. Conrm calibraon by challenging with known levels of radiaon and observing the indicaon.
7. Set Alarm Levels, Alarm Indicators, and Communicaon Sengs as desired.
8. Set the Calibraon Date.
Figure 4(6)
Figure 4(7)

17
Sensivity, or Calibraon Constant, is expressed in cps per mR/hr (Counts Per Second for every milliroentgen
the detector can detect) referenced to Cs-137. Mathemacally the cps units cancel each other out leaving mR/
hr, as shown below.
For example, if you have collected 200 CPS with a GM tube that has a typical gamma sensivity of 60 cpm per
mR/hr, you would divide the 200 cps by the 60 cpm per mR/hr sensivity. The cps cancels out and you are le
with 200/60 mR/hr = 3.33 mR/hr (Note, however, that the Area Monitor performs this conversion internally.)
=
cps
cps
mR/hr
cps
1
X
mR/hr
cps
= mR/hr
Radiaon Measurement Units
Several dierent units are used to measure radiaon, exposure and dosage.
Roentgen is the amount of X-radiaon or gamma radiaon that produces one electrostac unit of charge in
one cc of dry air at 0° C and 760 mm of mercury atmospheric pressure. One thousand milliroentgen (1,000
mR)= 1R. The Area Monitor can also displays in microroentgens per hour (millionths--µR/h), milliroentgens per
hour (throusandths--mR/hr) and kiloroentgens per hour (thousands—kR/h).
Rad is the unit of exposure to ionizing radiaon equal to an energy of 100 ergs per gram of irradiated material.
This is approximately equal to 1.07 roentgen.
Rem is the dosage received from exposure to a rad. It is the number of rads mulplied by the quality factor of
the parcular source of radiaon. The rem and millirem are the most commonly-used measurement units of
radiaon dose in the U.S. 1 rem= 1 rad.
Sievert is the standard internaonal measurement of dose. One sievert is equivalent to one hundred rems. A
microsievert (μSv) is one millionth of a sievert. A unit of dose equivalent. 1 Sv= 100 roentgens, 10 µSv/hr = 1
milliroentgen/hr.
Curie is the amount of radioacve material that decays at the rate of 37 billion disintegraons per second,
approximately the decay rate of one gram of radium. Microcuries (millionths of a curie) and picocuries
(trillionths of a curie) are also oen used as units of measurement.
Becquerel (Bq) is dened as the acvity of a quanty of radioacve material in which one nucleus decays per
second. 1 dps (one disintegraon per second).
Converng CPS to mR/hr
mR/hr = cps
sensivity
200 cps
cps
mR/hr
= 3.33 mR/hr
60
Chapter 10: Unit Conversions

18
Background Radiaon
Naturally occurring radiaon is always present. It includes high energy gamma rays and parcles from the sun
and outer space and alpha, beta, and gamma radiaon emied from elements in the earth.
CPM (counts per minute)
The unit of measurement usually used to measure alpha and beta radiaon.
Ion
An atomic parcle, atom, or molecule that has acquired an electrical charge, either posive or negave, by
gaining or losing electrons.
Ionizaon
The process by which neutral atoms of molecules are divided into pairs of oppositely charged parcles known
as ions.
Ionizing Radiaon
Radiaon capable of producing ionizaon by breaking up atoms or molecules into charged parcles called ions.
Radiaon
The emission and propagaon of energy through space or through maer in the form of parcles or waves.
Radionuclide
The naturally occurring or arcially produced radioacve form of an element.
Decay
When an atom emits an alpha or beta parcle or a gamma ray, it becomes a dierent type of atom. Radioacve
substances may go through several stages of decay before they change into a stable, or non-ionizing, form. For
example; U-238 has 14 dierent stages of decay before it stabilizes. An element may have several forms, or
isotopes. A radioacve isotope of an element may be called a radioisotope. However, the more correct term is
radionuclide.
Half-life
Each radionuclide has a characterisc half-life, which is the me required for half of a quanty of the material
to decay.
Chapter 11: Glossary of Common Terms

19
Display:
Approx. 4in by 2.2in resisve touch screen
Numeric Display:
Five digits, numerals 1.35in tall
Operang Ranges
• AM-7149: 0.2 - 16,000 mR/hr (2.0 - 160,000 µSv/hr) Using an Internally Mounted LND 7149 Energy
Compensated GM Detector. External mounting also available
• AM-7128: 15µR/hr – 200 mR/hr (0.2 - 2000 µSv/hr) Using an Internally Mounted LND 7128 Energy
Compensated GM Detector. External mounting also available
• AM-71313: 0.1 to 1500 mR/hr (0.5 - 15,000 µSv/hr) Using an Internally Mounted LND 71313 Energy
Compensated GM Detector. External mounting also available
• AM-1X1NAI: 1 µR/hr to 10 mR/hr (0 µSv/hr – 0.1 mSv/hr) Using an Externally Mounted 1X1 NaI(Tl)
Scintillation Probe
• AM-2X2NaI: 0.1 µR/hr to 2mR/hr (0 – 20 µSv/hr) Using an Externally Mounted 2X2 Nal(Tl) Scintillation
Probe
Maximum Cable Lengths:
GM Probes - 100, Scinllaon Probes - 50
High Voltage:
Adjustable from 200 to 1200 Volts in increments of 0.1 V
Threshold:
Adjustable from 0 to 2000 mV in increments of 1 mV
Dead Time:
Adjustable in increments of 0.01 uSec
Calibraon Constant:
Innitely adjustable in increments of 0.001 cps per mR/h
Base Units:
µR/h, mR/h, µSv/h, mSv/h, cpm, kcpm, cps, and kcps
Autorange:
Will not go below base selected base unit
Averaging Time:
Automac based on incoming count rate, from 4 to 20 seconds:
Greater than 400 cps, averaging me = 2 sec
201 to 400 = 4 sec
101 to 200 = 6 sec
68 to 100 = 8 sec
51 to 67 = 10 sec
41 to 50 =12 sec
35 to 40 =14 sec
30 to 34 =16 sec
26 to 39 =18 sec
Less than 25 = 20 sec
Power:
External 12VDC
Baery:
Internal SLA baery, will run unit for approximately 7.5 hours at background
Communicaons:
USB, Ethernet
Supported Detectors:
GM, Energy-Compensated GM, NaI, CsI, LaCl, LaBr, and all other scinllaon detectors
Appendix A: Technical Specicaons

20
WARRANTOR: S.E. Internaonal, Inc., P.O. Box 39, 436 Farm Road, Summertown, TN 38483-0039, USA, (931)
964-3561
ELEMENTS OF LIMITED WARRANTY: S.E. Internaonal, Inc., warrants for 1 year the included detector and for 1
year all materials and crasmanship in this product to be free from all defects with only the limitaons set out
below.
WARRANTY DURATION: The warranty shall terminate and be of no further eect one year aer the original
date of purchase of the product or at the me the product is: a) damaged or not maintained as is reasonable
or necessary, b) modied, c) repaired by someone other than the warrantor for a defect or malfuncon
covered by this Warranty, d) contaminated with radioacve materials, or e) used in a manner or purpose
for which the instrument was not intended or contrary to S.E. Internaonal, Inc.’s wrien instrucons. This
warranty does not apply to any product subjected to corrosive elements, misuse, abuse, or neglect.
STATEMENT OF REMEDY: In the event that the product does not conform to the warranty at any me while this
warranty is eecve, the Warrantor will repair the defect and return the instrument to you prepaid, without
charge for parts or labor.
NOTE: While the product will be remedied under this warranty without charge, this warranty does not cover or
provide for the reimbursement or payment of incidental or consequenal damages arising from the use of or
the inability to use this product. The liability of the company arising out of the supplying of this instrument, or
its use, whether on warranes or otherwise, shall not in any case exceed the cost of correcng defects in the
instrument, and aer the said one year period all such liability shall terminate. Any implied warranty is limited
to the duraon of the wrien warranty.
PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY: In the event that the product does not conform
to this warranty, please write or call to the address above. S.E. Internaonal, Inc. will not accept contaminated
instruments for calibraon or repair under warranty or otherwise.
NOTE: Before using this instrument, the user must determine the suitability of the product for his or her
intended use.
Appendix B: Limited Warranty