S.E. International Radiation alert Monitor 1000 EC User manual

S.E. Internaonal, Inc. P.O. Box 39, 436 Farm Rd. Summertown, TN 38483 USA
1.800.293.5759 | 1.931.964.3561 | Fax: [phone]
www.seintl.com | radia[email protected]om
INTERNATIONAL
®
PRELIMINARY

2
Cal Panel (Calibraon Panel) 15
Calibraon Informaon 15
Funcons 16
Retrieve Memory 16
Synchronize Monitor 1000EC to PC Clock 16
Chapter 7: Troubleshoong 17
Accessories 18
Xtreme Boot (Included) 18
Lanyard (Included) 18
Stand (Included) 18
Free Observer USB Soware (Download) 18
Appendix A: Technical Specicaons 19
Appendix B: Limited Warranty 20
Calibraon Database Applicaon 21
Contents
Chapter 1: Introducon 3
How the Monitor 1000EC Detects Radiaon 3
Precauons 3
Chapter 2: Features 4
The LCD Display 4
Indicators 4
The Buons 5
Power (Enter) Buon 5
Alarm Buon 5
Count Buon 5
Audio (Minus) Buon 5
Menu Buon 5
Backlight (Plus) Buon 5
Mode Buon 6
The Detector 6
The USB Port 6
Lanyard Loop 6
Xtreme Boot 6
Chapter 3: Operaon 7
Starng The Monitor 1000EC 7
Units of Measurement 7
Display Update 7
Maximum level 7
Response Time (Autoaveraging) 7
Autoranging 8
Operang in Dose/Rate Modes 8
Using The Alarm 8
Using the Data Logging Feature 8
Operang in Count Mode 9
How to Take a Timed Count 9
Using Dose/Rate Modes While The Timer is On 9
Menu 9
Menu Items 10
Monitor 1000EC Factory Defaults 10
Seng the Internal Clock 10
Interfacing with an External Device 10
Chapter 4: Common Procedures 11
Establishing the Background Count 11
Environmental Area Monitoring 11
Checking for Surface Contaminaon 11
Chapter 5: Maintenance 12
Calibraon 12
General Maintenance Tips 12
Chapter 6: Observer USB Soware 13
Installing the Observer USB Soware 13
Connect to The Monitor 1000EC 13
Observer USB Chart Screen 13
Observer USB Meter Screen 14
Show Grid 14
File 14
View 15
Preferences 15
Chart Sengs 15
Grid Sengs 15

3
The Monitor 1000EC is a health and safety instrument that is opmized to detect low levels of radiaon. It
measures gamma and x-ray radiaon (ionizing radiaon only).
Its applicaons include:
• Detecng and measuring surface contaminaon
• Monitoring possible radiaon exposure while working with radionuclides
• Screening for environmental contaminaon
• Detecng noble gases and other low energy radionuclides
How the Monitor 1000EC Detects Radiaon
The Monitor 1000EC uses a Geiger-Mueller tube to detect radiaon. The Geiger tube generates a pulse of
electrical current each me radiaon passes through the halogen quenched tube. Each pulse is electronically
detected and registers as a count. The count is displayed in the mode you choose.
The number of counts detected by the Monitor 1000EC varies from moment to moment due to the random
nature of radioacvity. A reading is expressed more accurately as an average over me, and the average is
more accurate over a longer me period. See Chapter 3: Operang in Count Mode.
Precauons
To keep the Monitor 1000EC in good condion, handle it with care, and observe the following precauons:
• CAUTION: Never touch the Monitor 1000EC to a surface that
may be contaminated. You may contaminate it.
• Do not leave the Monitor 1000EC in temperatures over 100° F (38°C)
or in direct sunlight for extended periods of me.
• Do not get the Monitor 1000EC wet. Water can damage the circuitry.
• Do not put the Monitor 1000EC in a microwave oven. It cannot measure
microwaves, and you may damage it or the oven.
• The Monitor 1000EC may be sensive to and may not operate properly in radio
frequency, microwave, electrostac, and electromagnec elds.
• The soware may disconnect in high stac condions and may need to be restarted by the user.
• If you do not expect to use the Monitor 1000EC for longer than one month, remove the baeries to avoid
damage from baery corrosion. A baery indicator appears on the display to show remaining power.
Chapter 1: Introducon

4
Chapter 2: Features
The Monitor 1000EC measures gamma and x-ray radiaon. It is opmized to detect small changes in radiaon
levels and to have high sensivity to many common radionuclides. This chapter briey describes The Monitor
1000EC’s features. The Monitor 1000EC counts ionizing events and displays the results on the liquid crystal
display (LCD). The unit of measurement is located on the lower right, below the numerical value. The unit of
measurement is selected by using the mode switch. Whenever the Monitor 1000EC is operang, the red LED
Indicator ashes each me a count (an ionizing event) is detected Figure 2(2).
The LCD Display
The LCD (liquid crystal display. Figure 2(1)) shows various indicators according to the mode seng, funcon(s)
being performed, and baery condion as shown below.
Indicators
BATTERY ICON - Indicates that the Monitor 1000EC
is powered by the AA baeries and shows the
remaining baery life. The baery icon (not shown)
will not appear if it is plugged into USB power.
USB ICON - Indicates that the Monitor 1000EC is plugged
into the USB jack and is running on USB power. The USB
icon will not appear if it is running on baery power.
ALARM ICON - Indicates that the alarm
has been set and is acve.
HOURGLASS ICON - Indicates that a med count is being taken.
RADIATION ICON - The ashing radiaon icon indicates that an alarm has been triggered
and will remain unl the radiaon levels drop below the set alarm threshold. The radiaon
icon will connue to ash at the top of the display if an alarm has been muted.
BACKLIGHT ICON - Indicates that the backlight has been turned on.
AUDIO ICON - Indicates that the audio clicks will sound with each count collected.
MUTE ICON - Indicates the audio has been turned o and the Monitor 1000EC is operang in silent
mode. While in silent mode, you will not hear the “beeps” that indicate turning on or o the alarm,
turning on or o the mer or making changes in the menu. You can sll acvate the “clicks” by pressing
the Audio buon. The Mute funcon does not turn o the “beeps” from the Alarm or the Over Range
feature. If you turn the unit o, you will have to turn the Mute feature back on if you wish to use it.
RECORD ICON - Indicates that the readings are being recorded into the internal
memory, which can be downloaded with the free Observer USB Soware.
The record icon will ash when the on board memory is full.
Figure 2(1)

5
The Buons
The Monitor 1000EC has a circular membrane
buon on the face of the instrument, which
consists of: Power (Enter), Alarm, Count, Audio
(Minus), Menu, Backlight (Plus), and Mode.
Power (Enter) Buon
The power (enter) buon is located in the center
of the membrane switch. It turns the Monitor
1000EC on and o and acts as the “Enter” buon
when in the ulity menu. To turn the Monitor
1000EC on, hold down the power buon unl you
hear a beep. To turn the unit o, press and hold
the power buon unl prompted to release.
Alarm Buon
The alarm buon is used to acvate the alarm
aer seng the desired alarm levels.
Count Buon
The count buon is used to take a med count. To
enter the me set screen, press the count buon.
The default count me is 10 Minutes. See Chapter 3: How To Take A Timed Count.
Audio (Minus) Buon
When not in the menu, the Audio Buon will funcon to silence the audio clicks and switch between silent and
audio operaon. To switch between audio clicks and no audio clicks with each count collected, press the Audio
Buon. To switch between silent and audio operaon, which mutes everything except the ALARM and OVER
RANGE, press and hold the Audio Buon for 3 seconds.
NOTE: When in the menu, the Audio Buon will funcon as the “scroll down,” or “Minus Buon,” for numbers
and sengs in the ulity menu.
Menu Buon
Pressing the MENU buon will enter into the menu. See Chapter 3: Menu.
Backlight (Plus) Buon
The LCD has a backlight that can be acvated for the default 7 seconds by pressing the backlight buon.
Pressing and holding the backlight buon for 3 seconds will turn the backlight on permanently. Once the
backlight has been permanently acvated, pressing and holding the backlight buon for 3 seconds will turn o
the backlight.
NOTE: When in the menu, the Audio Buon will funcon as the “scroll up,” or “Plus Buon,” for numbers and
sengs in the ulity menu.
Figure 2(2)

6
Mode Buon
The MODE BUTTON (Figure 2 (2)) is used to select from the available units of measurement.
• mR/hr (MilliRoentgen) - displays the radiaon level from .001 to 200.
• CPS (Counts Per Second) - displays the radiaon level from 0 to 3923.
• µSv/hr (MicroSievert) - displays the radiaon level from .001 to 2000.
• Counts - displays the accumulated total of counts from 1 to 9,999 kcounts (9,999,000).
• CPM (Counts Per Minute) - displays the radiaon level from 0 to 235,400.
• µR/hr (MicroRoentgen) - displays the radiaon level from 1 to 9999. Once the levels
exceed 9999 µR/hr, the unit of measure will change to mR/hr. Once the radiaon levels
go below 9999 µR/hr, the unit of measurement will revert back to µR/hr.
• NOTE: In CPM and Count modes, when numeric values exceed 9999, the unit of
measurement will change from COUNTS to KCOUNTS (1000 Counts).
The Detector
The Monitor 1000EC uses an energy compensated GM tube, that
detects gamma and x-rays. The EC tube responds lineraly over
the full range of the unit’s detecon range. The small radiaon
symbol on the back label indicates the approximate center of the
Geiger tube.
The USB Port
The USB Port (Figure 2 (2)) allows you to interface with a PC for
use with the Observer USB Soware. See Chapter 6: Observer
USB Soware.
Lanyard Loop
The lanyard loop is located on the boom of the Monitor 1000EC and serves as a means to connect a lanyard. It
also serves as the clip to lock the instrument into the stand.
Xtreme Boot
The Xtreme Boot is great for protecng against drops and scratches. You will need to remove the boot to
change the baeries.
Figure 2(3)
(1) Radiano Symbol

7
Chapter 3: Operaon
Starng The Monitor 1000EC
Before starng the Monitor 1000EC, install 2 AA alkaline baeries in the baery compartment located in the
lower rear of the enclosure. You will need to remove the protecve boot to gain access. CAUTION: Be sure not
to press on the window of the GM tube while removing the boot.
The power buon is located in the center of the circular buons on the front. To turn the Monitor 1000EC
on, press and hold the power buon unl you hear a beep. The Monitor 1000EC then begins a system check,
displaying the serial number and rmware version. Aer the system check, the radiaon level is displayed in
the previously selected mode. Approximately 30 seconds aer start up, a short beep indicates that enough
informaon has been collected to ensure stascal accuracy.
If you plan on using the data logging feature, please be sure to set the correct local me and date with the
Observer USB Soware prior to acvang the data logging. See Chapter 6: Observer USB Soware.
Units of Measurement
The Monitor 1000EC is designed for the use of convenonal measurement units; counts per minute (CPM),
microroentgens per hour (µR/hr), milliroentgens per hour (mR/hr), counts per second (CPS), microsieverts
per hour (µSv/hr), and counts, which are used when taking a med count. To switch between units, press the
mode buon.
Display Update
In the dose, rate, and count modes, the numeric display is updated every second.
Maximum level
When the maximum level for the current mode is reached, the Monitor 1000EC beeps for 3 seconds, pauses
for 3 seconds, and repeats. The numerical values displayed will show OVER instead of the specic rate. The
beeping paern and the ashing display connue unl the level decreases or the instrument is turned o.
Response Time (Autoaveraging)
When the radiaon level is less than 6,000 CPM, the reading in any of the dose rate modes is based on the
radiaon detected in the previous 30 seconds. In order to give a quicker response to changes, when the
radiaon level exceeds 6,000 CPM in any 30-second period, the reading is based on the previous 6 seconds.
When the radiaon level exceeds 12,000 CPM in any 30-second period, the reading is based on the previous
3 seconds. Note: Though Auto-Averaging is on by default, you can choose the fast response mode at any
radiaon level in the menu.
Aer 30 second start-up The reading will be based
if instrument is detecng on an average of the previous
(<100 CPS) 30 seconds
<6000 CPM or <1.75 mR/hr
(100 -200 CPS) 6 seconds
6000-12,000 CPM or 1.75-3.6 mR/hr
(>200 CPS) 3 seconds
>12.000 CPM > 3.6 mR/hr

8
Autoranging
When radiaon levels increase in some modes over certain preset levels, the Monitor 1000EC uses autoranging,
automacally changing from CPM to KCPM or from µR/hr to mR/hr.
Operang in Dose/Rate Modes
Cauon: Be sure there is no obstrucon between the detector window and the source being monitored/
surveyed. Avoid making measurements with the GM window facing the sun, as it could aect your readings.
At low count rates, signicant changes in the radiaon level displayed can take up to 30 seconds to stabilize
when set to auto-ranging. See Autoaveraging.
CPM, CPS, and Total counts are the most direct methods of measurement.
µR/hr, mR/hr and µSv/hr are calculated using a conversion factor opmized for Cesium-137. This mode is
less accurate for radionuclides other than Cs-137, unless you have calibrated the instrument for the specic
radionuclide you are surveying.
The most immediate indicators of the radiaon level are the audio indicator and count light.
Using The Alarm
The Alarm can be set in dose or rate modes using the currently selected unit of measurement. Once the alarm
threshold is reached, the beeper will sound and the alert icon (radiaon symbol) will ash unl the alarm is
deacvated, or the radiaon level drops below the set alarm threshold.
1. To set the alarm, press the alarm buon. The SET ALARM screen will be displayed.
2. Use the + or - buons to increase or decrease the desired alarm level.
3. Once you have set the alarm to the desired level, press the enter buon to retain the seng into
memory and acvate the alarm. The alarm icon (bell icon) is now displayed to indicate the alarm is acve.
4. Once the alarm is triggered, press the alarm buon to mute the alarm. The alert icon (radiaon
symbol) will remain ashing unl the radiaon level falls below the set alarm level.
5. To deacvate the alarm mode, press the alarm buon, then the enter buon.
The alarm icon is no longer shown at the top of the display.
Using the Data Logging Feature
It is not necessary to set the internal clock to start collecng data to memory, but it is recommended to
properly me stamp the data collecon on your device to ensure the correct me and date in your collected
readings. You will need a copy of the Observer USB Soware to set the internal clock. The latest version is
available at seintl.com/soware. See Chapter 6: Observer USB Soware. The internal clock of the Monitor
1000EC can be set to the date and me on a PC running the Observer USB Soware by clicking Funcons
> Synchronize Monitor 1000EC to PC Clock. The Monitor 1000EC will beep twice once synchronizaon has
completed.
Once the me has been set, you can acvate the data logging via the Observer USB Soware or via the menu
buon on the Monitor 1000EC. To acvate it on the instrument, press Menu > Data Logging, then enter and
follow the on screen prompts. The default data logging frequency is 1 minute. You can change the frequency
in the Cal Panel window of the Observer USB Soware. There is enough on-board memory for a data logging
frequency of 1 minute to record for 90 hours. A data logging frequency of 10 minutes can record for 888 hours.
See Chapter 6: Observer USB Soware.

9
Operang in Count Mode
A med count is useful for determining the average counts per minute over a longer period of me. The
number of counts detected varies from minute to minute due to the random nature of radioacvity. When a
count is taken over a longer period, the average count per minute is more accurate.
Taking an average allows you to detect low-level contaminaon or dierences in background radiaon due
to altude or soil mineral content. For example, if one 10-minute average is 1 count per minute higher than
another 10-minute average, the increase is likely due to normal variaon. But over 12 hours, a 1 count per
minute increase over the 12 hour background average may be stascally signicant.
How to Take a Timed Count
1. Press the count buon
2. Using the menu buon to switch between seconds, minutes, and hours, set the
me using the + and - buons, to increase and decrease the me.
3. Once you set the count me, press the enter buon (Figure 2(2)) to begin the med count.
4. On the count screen, once the count has begun, a ashing hourglass will appear at
the top of the display and a star will appear next to the count down unl the count is
completed. Once the count is completed the hour glass and star will disappear.
5. From the count screen, press the mode buon to cycle through the various units of measure. If you want
to see the remaining me in the count, connue cycling through the units of measure unl you return to
the count screen. If you have pressed the count buon accidentally and do not wish to start a new med
count, press the count buon again to exit the set count me screen and return to the units of measure.
6. To stop the current count, press the count buon, and press enter.
Using Dose/Rate Modes While The Timer is On
Dose/rate modes can be used while the mer is on. In any dose/rate mode, the hour glass indicator will
connue to ash during a med count. At the end of the med period, the hour glass will remain solid, and the
Monitor 1000EC will beep 3 mes.
Menu
The Menu allows the user to change the default sengs for several operang parameters. Once a seng is
changed, it remains in eect unless it is changed through the Ulity Menu, the USB Observer Soware, or by
restoring the default sengs.
1. To acvate the Menu, press the menu buon. The display will show the menu opons.
2. Scroll through the menu by pushing the + or - buons.
3. To select an opon, push the enter buon.
4. Use the + or - buons to toggle between choices and press the enter buon to select
the new value. To adjust another menu opon, repeat the above steps.
5. To exit the Ulity Menu at any me, press the menu buon again. Normal operaon will connue.

10
Menu Items
Auto Averaging
Turns auto averaging on or o. On by default.
Data Logging
Turns the internal memory on or o to record readings. O by default.
Set To Defaults
Resets the Monitor 1000EC to the default factory sengs. Doing this will not change the deadme and
sensivity, the me and date, or the data collecon frequency.
Monitor 1000EC Factory Defaults
The factory default seng are:
Auto Average - On
Clicks - On
Audio Buon silent mode - O
Count Time - 10 minutes (600 seconds)
Alarm - O - Default level - 1070 CPM (1.0 mR/hr, 1000 µR/hr, 10 µSv/hr, 17 CPS)
Data Logging Interval - 1 minute
When you access Set to Defaults in the Menu on the instrument, all of the above sengs will be returned
to the factory defaults, except Data Logging. The Data Logging Interval can only be changed through the
soware.
When you turn o the Monitor 1000EC, any sengs you have made will come back to their last state except the
Audio Buon silent funcon. To switch between silent and audio operaon, which mutes everything except
the ALARM and OVER RANGE, press and hold the Audio Buon for 3 seconds.
Seng the Internal Clock
It is not necessary to set the internal clock to start collecng data to memory, but it is recommended to
properly me stamp the data collecon on your device to ensure the correct me and date in your collected
readings. You will need a copy of the Observer USB Soware to set the internal clock. The latest version is
available at seintl.com/soware. See Chapter 6: Observer USB Soware.
Interfacing with an External Device
The USB jack on the right side provides an interface for use with the USB Observer Soware. See Chapter 6
Observer Soware. The USB connecon will not charge the baeries.

11
Chapter 4: Common Procedures
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, 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. See Chapter 3:
How To Take A Timed Count.
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 Monitor 1000EC in dose/rate 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 count mode 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).
Checking for Surface Contaminaon
To check a surface, hold the detector window close to the surface, and read the count rate (wait 30 seconds
or unl the reading has stabilized). Do not touch the unit to whatever you are checking to avoid contaminang
the unit.

12
The Monitor 1000EC requires regular calibraon and careful handling to assure good measurements. Use the
following guidelines to properly maintain the instrument.
Calibraon
We recommend that the Monitor 1000EC be calibrated annually, or as oen as your regulaons require. The
best way to calibrate the Monitor 1000EC is using a calibrated source at a calibraon lab.
The reference standard by which the Monitor 1000EC is calibrated is Cesium-137. A cered calibraon source
should be used. To calibrate the Monitor 1000EC for another radionuclide, use a calibrated source for that
radionuclide or the appropriate conversion factor referenced to Cs-137.
CAUTION: Errors can occur when using low level sources or background for calibrang. In the Calibraon
mode, the smallest increment which can be adjusted is .010.
If you would like more informaon about source calibraons, please contact us at 1.800.293.5759 or go to
seintl.com/services.
General Maintenance Tips
1. Do not get the Monitor 1000EC wet.
2. Be sure to store the Monitor 1000EC in a locaon without direct sunlight, as
sunlight can damage the end window of the detector over me.
3. Be sure to store the Monitor 1000EC inside the carrying case when not in use.
4. If you are planning to store the Monitor 1000EC for a long me, remove the
baeries to avoid baery corrosion inside the baery compartment.
5. Do not place the Monitor 1000EC inside a microwave oven as it can damage the instrument
and/or the microwave. This instrument is for detecng ionizing radiaon such as gamma and
x-rays. It will not detect non-ionizing radiaon such as microwave and radio emissions.
Chapter 5: Maintenance

13
The Observer USB reads in Total Counts, CPM, µR/hr, mR/hr, CPS, µSv/hr, and has the ability to collect, log
the data received, set the calibraon date and sengs, and echo the readings collected on a PC. The data
is displayed on a graph, as well as a digital on-screen meter. Data can be saved or printed in various ways,
including a spreadsheet format. The dwell/count me can be adjusted for each point on the graph. You can
also set the length of me for the count. The soware display has adjustable sengs as well as a seable
alarm.
Installing the Observer USB Soware
The New Observer USB is a free version of the Observer soware that runs on Windows®. You can download a
copy the Observer USB Soware at seintl.com/soware. Install the soware prior to connecng your Monitor
1000EC to the computer. Aer the soware has completed downloading, double click on the installer, and
follow the on-screen prompts.
Connect to The Monitor 1000EC
Once the soware is installed and started, it will
run as a service in the background idened by
the icon in the system tray. The instrument will be
automacally detected and idened when the
Monitor 1000EC is connected via USB. The USB port is
a micro USB jack located on the side of the Monitor
1000EC Figure 2(2). To connect the Monitor 1000EC,
turn the instrument on, plug the cable into the USB
jack, and connect the other end to the USB port on
your computer.
Once the Monitor 1000EC is connected, the Observer
Soware will launch and open a window for the
instrument with the serial number displayed in
the upper le corner of the tle bar (Figure 6(1)). A new window will open for each detector
connected.
Observer USB Chart Screen
The Observer USB Chart Screen (Figure 6(2)) displays
a chart of the data currently collected by the
aached instrument.
The X Axis
The X axis consists of the me and date
stamp of the reading collected and will adjust
automacally to display all of the data collected
unless the Scroll check box is selected. If the Scroll check box is selected, the X axis will
display the latest readings collected in the minute(s) me frame selected next to the Scroll check box. For
example, if 2 minutes is selected in the Scroll me, then the chart will display the latest 2 minutes of data
collected. The most recent data collected will be shown on the right side of the graph.
The Y Axis
The Y axis displays the unit of measurement for the reading displayed and will automacally adjust to
display the highest reading collected.
Chapter 6: Observer USB Soware
Figure 6(1)
Figure 6(2)

14
Observer USB Meter Screen
The Observer USB Meter Screen (Figure 6(3)) simulates a digital
meter to display the readings collected by the detector.
Zero
When the Zero is clicked, the averaging of the collected
counts starts over.
Averaging Time
The Averaging Time selects the amount of me in which
the previous readings are averaged. The longer the
averaging me, the more accurate your reading. Shorter
averaging mes allow signicant changes to be seen more quickly.
Units
To switch between units of measurement, use the Units drop down menu. The Units drop down box
selects the unit of measurement displayed on the y axis of the chart screen. You can select Averaging
Time and the Units of measurement of the chart screen and the meter screen.
Echo Monitor 1000EC Display
When Echo Monitor 1000EC Display is checked, only the meter screen will mirror the display of the
Monitor 1000EC.
Enable Alarm at and Latch Alarm
You must rst check Use Audible Alarm in View > Preferences to enable the alarm on your computer’s
sound system. The Enable Alarm at box will acvate the alarm that is built into the soware. Once the
radiaon levels go back below the set level of the alarm, the alarm will stop unless you have checked
Latch Alarm. When Latch Alarm is checked, the alarm will connue to go o unl the reset buon is
pressed. This is a USB Observer Soware alarm only, not the alarm on the Monitor 1000EC.
Show Grid
Show Grid displays an ongoing collecon of
data based on the user selectable sengs in
the View > Preferences > Grid Sengs dialog
box (Figure 6(4)).
Save Grid and Clear Grid
You can save or clear the Grid at any me by
clicking on the Save Grid or Clear Grid boxes.
File
Save Chart
A text le of the Chart data is saved.
Save Grid
A text le of the Grid data is saved.
Exit
Closes the program.
Figure 6(3)
Figure 6(4)

15
View
Preferences
Use View > Preferences menu to adjust the
sengs in the Observer USB Preferences
(Figure 6(5)).
Chart Sengs
Autosave and Clear Chart Every
Will automacally save and clear the chart at
the number of minutes selected. Auto Save
les are saved to the Observer USB Data
folder located in the Documents Library.
Use Audible Alarm
Will sound an alarm on the computer’s
sound system.
Grid Sengs
Write to Grid Every
Will set how oen a new data point will appear on the grid.
Autosave and Clear Grid Every
Will automacally save and clear the grid at the number of data points selected.
Addional Grid Data
Allows the seng of the units of measurement shown in the grid for Value 1 and Value 2.
Cal Panel (Calibraon Panel)
Located under View > Cal Panel, the Calibraon Panel Window (Figure 6(6)) displays the Serial Number and
Calibraon Values. You can use the Calibraon Panel to change
a number of sengs on the instrument. The Monitor 1000EC
should be in a mode screen or count screen when choosing
to Update Sengs, as some changes to the menu items via
the Cal Panel will not refresh if the instrument is displaying a
menu screen. Note: Update Sengs must be chosen before any
changes made in the Calibraon Panel will be applied to the
Monitor 1000EC.
Calibraon Informaon
Calibraons, such as an NIST Source Calibraon, contain
informaon including the Serial Number, Calibraon Date,
Deadme, and Sensivity (cpm per mR/hr).
CAUTION: Please note that changes to the Serial Number,
Calibraon Date, Deadme, and Sensivity may void any
calibraon of the instrument on record.
Figure 6(5)
Figure 6(6)

16
Alarm cpm and Alarm Enabled
To acvate the alarm, enter the alarm threshold in the Alarm cpm eld, and check Alarm Enabled. To
disable the alarm, uncheck Alarm Enabled. If the alarm has been acvated and Alarm Enabled is then
unchecked, the alarm will connue to sound unl Update Sengs has been selected.
Preset Counng Time (sec)
Enter the number of seconds to set the me for taking a med count. The default is 600 seconds.
Use Data logging
Enables wring the collected data to the internal memory. Note: Set the me and date on the Monitor
1000EC before acvang the data logging feature. The internal clock of the Monitor 1000EC can be set to
the me on a PC running the Observer USB Soware by clicking Funcons > Synchronize Monitor 1000EC
to PC Clock. The Monitor 1000EC will beep twice when synchronizaon has completed unless Quiet Mode is on.
Datalogging Interval (min)
Sets the interval for the data to be logged. The default is 1 minute and can only be changed through the soware.
Circular Buer
Allows the oldest collected data to be overwrien with the most recent data when the memory is full.
Clear Memory
Clears the data stored in the internal memory on the instrument.
Backlight On Time
Sets how many seconds the backlight will be on when pressing the backlight buon.
Display Mode
Use to select from the available units of measurement
Contrast
Sets the contrast of the LCD display numbers and icons.
Auto-Averaging
This acvates the auto-averaging feature. When unchecked, the Monitor 1000EC is in fast response mode.
Fast response mode is only recommended for use in high radiaon elds.
Clicks Enabled
Enable or disable the clicks only.
Quiet Mode
Enable or disable all sounds on the Monitor 1000EC except the ALARM and OVER RANGE. You can sll
enable clicks in Quiet Mode.
Funcons
Retrieve Memory
If the recording feature is acvated and the internal clock is set, then the collected data can be retrieved from
the internal memory by selecng Funcons > Retrieve Memory. Data is stored in a delimited text le, which
can be opened in your preferred spreadsheet soware. The default data logging frequency is 1 minute. You can
change the value in the Calibraon Panel window of the Observer USB Soware.
Synchronize Monitor 1000EC to PC Clock
Sets the date and me on a PC running the Observer USB. The instrument will beep twice when
synchronizaon has completed.

17
The Monitor 1000EC is a highly reliable instrument. If it does not seem to be working properly, look through the
following chart to see if you can idenfy the problem.
Chapter 7: Troubleshoong
Problem Possible Cause Acon
Display works, but no counts
are registered
defecve Geiger tube Replace it.
Reading is high, but another
instrument has a normal
reading in the same locaon
possible contaminaon Scan the Monitor 1000EC with another
instrument.
Instrument has false high
reading
moisture The circuit board may be wet. Dry the
instrument in a warm, dry place. If
it sll has a problem, it may require
service.
Instrument has false high
reading or OVER RANGE
connuous discharge Replace the Geiger tube.
electromagnec eld Move the instrument away from
possible sources of electromagnec or
radio frequency radiaon.
Display is blank no baery, dead baery, poor
baery connecon, defecve
LCD
Install new AA baeries. If count light
and audio work, If the count light and
audio work, it requires service.

18
Xtreme Boot (Included)
The Xtreme boot oers maximum performance in a lightweight rugged
soluon for using Radiaon Alert® products in the eld. The Xtreme boot is
designed specically for individuals operang in tough environments, such as
1st Responders and Mining and HAZMAT crews. Made of a RoHS compliant
TPE rubber, the case also oers superior grip and drop protecon.
Lanyard (Included)
The loop on the boom of the enclosure can accommodate the included
lanyard to help protect the Monitor 1000EC from drops.
Stand (Included)
Whether you need to perform area monitoring or
scan your hands and items for contaminaon, the
STAND oers a convenient way for the instrument
to stand vercally while leaving your hands free
for other tasks.
Free Observer USB Soware (Download)
The New Observer USB is a free version of the
Observer soware that runs on Windows®. It can
be used with The USB versions of the Radiaon
Alert® Radiaon Detector Family. The Observer
USB reads in Counts, CPM, and CPS, as well as
µR/hr, mR/hr, and µSv/hr and has the ability to
collect, log, and perform stascal analysis on the
data received. You can download a copy at
seintl.com/soware.
No Mac or WinRT versions are available.
Accessories

19
Detector
Halogen-quenched GM tube with thin mica end window. Mica window density 1.5-2.0 mg/cm2.
E󰀨ective window diameter is .360 inch. Side wall is .012 inch thick.
Operating Range
mR/hr - .001 (1µR) to 1000 mR/hr
µSv/hr - .01 to 10000
CPM - 0 to 450,000
CPS - 0 to 7500
Total Counts- 1 to 9,999,000 counts
Accuracy (Referenced to Cs-137)
Typically ±15% from factory,
±10% with NIST Source
Calibration
Energy Sensitivity
450 CPM/mR/hr referenced to Cs-137
Selectable Alert Set Range
Alarm can be set in any mode. Pulsating beeper sounds the alert. 70db at 1 m. Alarm will sound when
in Count Mode when set alarm threshold is reached.
Anti-Saturation
Meter will hold at OVER RANGE in elds as high as 100 times the maximum reading.
Averaging Periods
Display updates every second. At low background levels, the update is the average for the past
30-second time period. The timed period for the average decreases as the radiation level increases.
Display
Graphic Display with Backlight
Count Light
Red LED ashes with each radiation event
Audio Indicator
Internally mounted beeper (can be switched o󰀨 for silent operation)
Outputs
USB and Bluetooth BLE (4.1) for use with Free Observer Family Software for PCs and Android OS.
Power Requirements
Two AA alkaline batteries (included). Approximately 800 hrs at background.
Size
140 X 68 X 33 mm (5.5 X 2.7 X 1.3 in.)
Includes
Carrying Case, Xtreme Boot, Stand, Lanyard, Detector Cover, Mini-USB Cable, Observer USB
Software Download, Certicate of Conformance
Options
NIST Calibration
Limited Warranty
1 year limited warranty
Appendix A: Technical Specicaons
5
4
3
2
1
0
10
1
10
2
10
3
10
4
71313 ENERGY RESPONSE
(Relative to Cs-137)
RELATIVE COUNTRATE
PHOTON ENERGY (keV)

20
WARRANTOR: S.E. Internaonal, Inc., P.O. Box 39, 436 Farm Road, Summertown, TN 38483-0039, USA, (931)
964-3561
ELEMENTS OF WARRANTY: S.E. Internaonal, Inc., warrants for one 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