Ludlum Measurements 3005 User manual

LUDLUM MODEL 3005
DIGITAL SURVEY METER WITH INTERNAL DETECTOR
USER’S MANUAL
July 2017
Serial Number: 25009185 and Succeeding
Firmware: 49830n26 and Higher

LUDLUM MODEL 3005
DIGITAL SURVEY METER WITH INTERNAL DETECTOR
USER’S MANUAL
July 2017
Serial Number: 25009185 and Succeeding
Firmware: 49830n26 and Higher

Model3005GammaSurveyMeter User’s Manual

Model3005GammaSurveyMeter User’s Manual
STATEMENT OF WARRANTY
Ludlum Measurements, Inc. warrants the products covered in this manual to be free of
defects due to workmanship, material, and design for a period of twelve months from
the date of delivery. The calibration of a product is warranted to be within its
specified accuracy limits at the time of shipment. In the event of instrument failure,
notify Ludlum Measurements to determine if repair, recalibration, or replacement is
required.
This warranty excludes the replacement of photomultiplier tubes, GM and
proportional tubes, and scintillation crystals which are broken due to excessive
physical abuse or used for purposes other than intended.
There are no warranties, express or implied, including without limitation any implied
warranty of merchantability or fitness, which extend beyond the description of the
face there of. If the product does not perform as warranted herein, purchaser’s sole
remedy shall be repair or replacement, at the option of Ludlum Measurements. In no
event will Ludlum Measurements be liable for damages, lost revenue, lost wages, or
any other incidental or consequential damages, arising from the purchase, use, or
inability to use product.
RETURN OF GOODS TO MANUFACTURER
If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please
send to the address below. All shipments should include documentation containing return shipping
address, customer name, telephone number, description of service requested, and all other necessary
information. Your cooperation will expedite the return of your equipment.
LUDLUM MEASUREMENTS, INC.
ATTN: REPAIR DEPARTMENT
501 OAK STREET
SWEETWATER, TX 79556
800-622-0828 325-235-5494
FAX [phone]

Model3005GammaSurveyMeter User’s Manual
Table of Contents
Introduction 1
Getting Started 2
Unpacking and Repacking 2-1
Battery Installation 2-1
Instrument Operational Test 2-2
Detector Failure Diagnostic 2-5
Detector Over Range 2-5
Detector Overload 2-6
Instrument Use and Controls 2-6
RATE Mode Operation 2-8
MAX Mode Operation 2-9
COUNT Mode Operation 2-10
Specifications 3
Setup Mode 4
Setup Overview 4-1
Default Setup Values 4-2
Entering Setup Mode 4-3
Setup Mode Operation 4-5
Advanced Features 5
Dead Time Correction 5-1
Units 5-2
Software Calibration Tools 5-2
Instrument Calibration 5-3
Other Device Data 5-3
Real-Time Settings 5-3

Model3005GammaSurveyMeter User’s Manual
Datalogging 6
Datalogging Operation –Mode 1 6-2
Datalogging Operation –Mode 2 6-3
Datalogging Operation –Mode 3 6-4
Specifications 6-4
Software 7
Connecting to Software 7-1
Extended Features 7-2
Safety Considerations 8
Environmental Conditions for Normal Use 8-1
Warning Markings and Symbols 8-1
Cleaning and Maintenance Precautions 8-2
Revision History 9
Recycling 10
Options 11
Energy Response A

Model3005GammaSurveyMeter User’s Manual Section1
Ludlum Measurements, Inc. Page 1-1 July 2017
Introduction
The Model 3005 is an ergonomic, lightweight instrument with an
internal detector used for radiation survey. The instrument features a
large backlit LCD (liquid crystal display), a piercing audio warning, and
easy, intuitive use. The unit body is made of lightweight but durable
plastic. It is intended for outdoor use and can resist splashing water.
Versions: While the standard Model 3005 has an internal Energy-
Compensated Geiger-Muller (ECGM) detector, other detectors are
possible:
3005: ECGM with range 0.1-5000 mR/hr or 0.001-50 mSv/h
3005/3: ECGM with range 0.1-25000 mR/hr or 0.001-250 mSv/h
3005/4: ECGM with range 1-50000 mR/hr or 0.001-500 mSv/h
Three modes of operation are available for the Model 3005 –RATE,
MAX, and COUNT. RATE mode operation will display the current
exposure, or dose rate. MAX mode is used to capture the highest
exposure or dose rate detected –useful for finding a peak rate when the
display is not visible. Two sets of units (primary and secondary) for
RATE and MAX modes can be chosen from among cps, cpm, Bq,
dpm, R/h, or Sv/h. The user can switch between these two units by
simply tapping the Units button. If not needed, the 2nd set of units can
be disabled. Also, the additional MAX and COUNT modes may also be
disabled, reducing the possible number of displays the user may
confront.
COUNT mode allows the user to perform a count for a predetermined
time. Depending on the count units chosen, the result can be a scaler
count (in counts or disintegrations), a time-averaged rate (cpm, dpm,
Bq, cps), a time-averaged exposure or dose (R/h, Sv/h), or an
integrated exposure or dose (R or Sv).
The display will be automatically backlit if light levels are low. The
display backlight can also be configured for “Continuous On”
operation. Radiation level alarm points can also be configured.
Section
1

Model3005GammaSurveyMeter User’s Manual Section1
Ludlum Measurements, Inc. Page 1-2 July 2017
Setup of the instrument is accomplished through the front-panel
buttons, or through the USB port with software available from Ludlum
Measurements. The advanced user or administrator can set:
Calibration Constant
Dead Time Correction 1
Dead Time Correction 2
Efficiency
High Voltage
Pulse Threshold
Detector Current Overload Threshold
Loss of Count Alarm Time
Primary and Secondary Units
Primary and Secondary Minimum and Maximum Displays
Primary and Secondary Unit Alarm Levels
Primary and Secondary Count Units
Primary and Secondary Count Units Minimum Displays
Primary and Secondary Count Alarm Levels
Response Time
Auto-Response Rate (Fast or Slow)
Available Operational Modes
Count Time
Auto Shutdown Time
Backlight Threshold
Sigma or Click Audio Mode
The Model 3005 comes with the ability to log measurements to memory
for later download. The optional Ludlum Lumic Datalog software is
needed to download this memory, however. The unit can log up to
1000 measurements, and it adds a date/time stamp to each
measurement.

Model3005GammaSurveyMeter User’s Manual Section1
Ludlum Measurements, Inc. Page 1-3 July 2017
Front-panel setup can be disabled via the internal switch on the Model
3005 in order to protect settings from inadvertent changes.
The unit is operated with four alkaline AA batteries for operation from
-20 to 50 °C (-5 to 122 °F). Battery life is approximately 750 hours
under normal usage. A low-battery indicator on the LCD warns when
less than 16 hours of battery life remain.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-1 July 2017
1. Turn the instrument over so that the bottom of
the instrument is facing up.
2. Use a straight medium-sized screwdriver to turn
the single screw on the battery cover one
quarter-turn counter-clockwise.
3. Release and remove the battery cover.
4. Replace four each AA batteries.
5. Replace the cover and turn screw one quarter-
turn clockwise to secure.
Getting Started
Unpacking and Repacking
Remove the calibration certificate and place it in a secure location. Remove
the instrument and ensure that all of the items listed on the packing list are
in the carton. Check individual item serial numbers and ensure calibration
certificates match between instruments and detectors (if applicable). The
Model 3005 serial number is located on a label on the front side of the unit.
To return an instrument for repair or calibration, provide sufficient packing
material to prevent damage during shipment.
Every returned instrument must be accompanied by an Instrument
Return Form, which can be downloaded from the Ludlum website at
www.ludlums.com. Find the form by clicking the “Support” tab and
selecting “Repair and Calibration” from the drop-down menu. Then choose
the appropriate Repair and Calibration division where you will find a link to
the form.
Battery Installation
A low-battery indicator appears at the bottom of the LCD when less than
16 hours of battery life remain. When this indicator is present, follow these
steps to replace the four standard AA batteries:
Section
2

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-2 July 2017
Instrument Operational Test
Turn the instrument ON by pressing the ON/ACK button for about a
second, and then releasing.
The instrument should activate all the LCD segments and the audio.
Observe the device during this time. If any LCD segments are missing, or
audio fails to work, the device is in need of repair. Please refer to Figure 1
below.
Figure 1: Startup display for Model 3005, with all LCD segments shown.
The instrument then displays the firmware version. Please refer to Figure 2
below.
Figure 2: Firmware version display.
Note: Firmware Versions with the Bq displayed support auxiliary
communication.
The instrument then displays the battery voltage. Please refer to Figure 3.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-3 July 2017
Figure 3: Battery Voltage display
The instrument then displays the number of stored records if data logging is
enabled. Please refer to Figure 4 below.
Figure 4: Startup display for Optional Data Logging firmware, showing
155 stored records.
The instrument will then move to normal operation, displaying the current
rate for the Primary units (default: µR/hr).
If the Sigma Audio option is selected, the unit will display a countdown
from :08 to :01 (in seconds) as the unit measures background radiation
levels. Note that the Sigma Audio option is intended for scintillation
detectors and will generally not work well for the GM detectors used in the
Model 3005, 3005/3 and 3005/4.
The user may select the Secondary units (default: cpm) by tapping the Units
button.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-4 July 2017
Ensure that the low-battery indicator is not present. If the low-battery
indicator is present, replace the batteries as soon as possible. Should the
instrument detect a battery voltage that is high enough to power on, but too
low to safely operate, the display will blank and the low-battery icon will
flash. Normal operation will not be available until the batteries have been
replaced. Under extreme low-battery conditions, be aware that the unit may
not even turn on or may turn itself off abruptly.
A reference reading with a check source, 1 µCi (37 kBq) of 137Cs for
example, should be obtained at the time the instrument is received in the
field. Small check sources of radiation are available from Ludlum
Measurements. While exempt from many regulations because of their small
size, these sources are large enough to produce a response on this
instrument. If this procedure is done routinely with the same radiation
source, instrument malfunction may be detected when anomalous readings
are observed. If at any time the instrument fails to read within 20% of the
reference reading when using the same check source, it should be sent to a
calibration facility for recalibration and/or repair.
Example log reading:
Check Source # Rate Units
Once this procedure has been completed, the instrument is ready for use.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-5 July 2017
Detector Failure Diagnostic
Note that the Model 3005 has its own diagnostic tests to ensure that the
detector is functioning correctly. The Model 3005 can detect when the
radiation detector is malfunctioning and will flash the display to indicate a
fault. If the detector stops detecting radiation for a settable number of
seconds, the Model 3005 will flash a zero reading for the currently selected
units. This indication is common if the unit is powered up without a
detector connected. If this indication is observed with a connected detector,
remove the unit from service and have it evaluated by a qualified repair and
calibration technician.
Figure 5: Detector Failure display (shown for cpm); will also flash.
Detector Over Range
If the detector is exposed to high levels of radiation or has an internal
malfunction that causes it to count high or excessively, the unit flashes the
maximum rate (999) for the currently selected units as a warning. The user
should ensure whether this is being caused by a high radiation field or by
internal malfunction. With some detectors, this display could be an indicator
of a light leak, possibly caused by a puncture or tear in the detector face. If a
Maximum Display parameter is set, then it is possible for the display to flash
the Maximum Display value under this condition.
Figure 6: Detector Over Range (shown for cpm); will also flash.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-6 July 2017
Detector Overload
As another diagnostic test, the Model 3005 monitors the HV supply's
detector current. A current overload threshold can be set via Setup Mode.
(A setting of 0 disables this alarm.) In general, this alarm setting can be used
to detect when there is some detector failure, a cable failure, or a possible
high level of radiation. When this alarm is triggered, the LCD will display
OL and an alarm tone will sound. Once the detector current goes below the
threshold, the Model 3005 will return to normal operation.
Figure 7: Detector Overload Alarm; will also flash.
Instrument Use and Controls
With four front-panel buttons, the Ludlum Model 3005 is simple and easy
to use with minimal training required. Default operation is RATE mode,
and the display shows the current count rate using the Primary units.
Tapping the UNITS button will switch between Primary and Secondary
units. Long-pressing the MODE button will switch the instrument to MAX
mode, which will display the highest count rate detected. Long-pressing the
MODE button again will switch to COUNT mode, which will display the
COUNT timer. Note that either or both of the MAX and COUNT modes
can be locked out in the setup process.
See the Model 3005 drawing at the beginning of this manual to
reference the following controls:
There are two types of button presses for each button described below:
Short Press - pressing the button and releasing in under a half second. A
short press will be referred to as a tap throughout this document.
Long Press -pressing the button and holding for at least a half second
before releasing. A long press will be referred to as a press throughout this
document.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-7 July 2017
ON/ACK button:Used to power the Model 3005 ON and OFF, reset MAX
mode, start/reset the COUNT Timer, and acknowledge audio alarms.
Power On: Press for approximately one second and release (all
LCD segments will activate, and firmware version will be shown).
Power Off: Press for approximately five seconds. The display will
show a 3, 2, 1 countdown for the final three seconds of shutdown.
Releasing the ON/ACK button during shutdown will return the
device to the previous state of operation. At completion of the
shutdown count, the LCD will go blank.
Short Press(Tap):
Will acknowledge/silence alarms in all modes of operation.
Change Log Location Selected Position (if data logging is enabled).
Will move selection position in the device menu.
Long Press(press):
Start/reset COUNT Timer in COUNT mode.
When Sigma Audio is enabled, pressing the ON/ACK button will
take a new background reading and update the Sigma Audio level
(in Rate Mode only).
Reset/Zero (if enabled): When in Rate mode, will reset/zero the
averaged rate. The minimum display will be shown before returning
to the exposure rate. When Sigma Audio is enabled, Rate Reset is
disabled.
Will reset MAX mode display.
UNITS button: Tap to switch between Primary and Secondary units in all
available modes.
AUDIO button: Tap to toggle the click/Sigma audio ON or OFF. Audio
defaults to ON when the unit is powered up. Count Mode audio is disabled
by default, but can be enabled through Lumic Software. Sigma audio is
disabled in Count Mode. While viewing the Detector Overload parameter in
the device menu, long-pressing the audio button will allow the user to view
the actual current level. Another long press will return the user to overload
setpoint.
MODE button: Tap to advance between the three operating modes, RATE,
MAX, and COUNT. Note that MAX and/or COUNT mode may be
disabled from use by the administrator or calibrator. While in the device
menu, tap to increment the selected digit/text to the next available option.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-8 July 2017
RATE Mode Operation
In RATE mode, the current count rate will be displayed.
Long-pressing the ON/OFF button for at least a half second will reset the
averaged rate before releasing the button. The Reset feature must be
enabled through Lumic Calibration software (see parameter: RateResetBtn)
and will be disabled when Sigma Audio is enabled.
Tapping the UNITS button will switch the displayed value between the
Primary and Secondary Units.
Tapping the AUDIO button will turn the audio on/off.
If an alarm condition is present, tapping the ON/ACK button will
acknowledge and turn off the continuous tone alarm audio. Under an alarm
condition, the ALARM display indicator will remain on. Alarms are non-
latching in RATE mode.
If other operational modes are available, tapping the MODE button will
move to the next available operational mode.
Figure 8: RATE mode display showing typical background radiation rate
and the low-battery icon.

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MAX Mode Operation
While in MAX mode, the highest detected count rate (since the last reset) is
displayed. The word MAX will be displayed when in MAX mode.
Tapping the UNITS button will switch the displayed value between the
Primary and Secondary Units.
Tapping the AUDIO button will turn the audio on/off.
Under a non-alarm or alarm condition, long-pressing the ON/ACK button
will reset the display. When Sigma Audio is enabled, the Sigma Audio alarm
level cannot be reset in Max Mode.
If an alarm condition is present, tapping the ON/ACK button once will
acknowledge and turn off the continuous tone alarm audio. (The “click”
audio will remain as selected under non-alarm conditions.) Under an alarm
condition, the ALARM display indicator will remain on until the display is
reset. Alarms in MAX mode latch with the display.
If other operational modes are available, tapping the MODE button will
move to the next available operational mode.
Figure 9: MAX mode operation display with ALARMindicator.

Model3005GammaSurveyMeter User’s Manual Section2
Ludlum Measurements, Inc. Page 2-10 July 2017
COUNT Mode Operation
When entering COUNT Mode from another operational mode, the
currently selected COUNT Units will be displayed for approximately one
second. The purpose of COUNT mode is to count for a predetermined
amount of time, and to display the results on the display. Note that the
predetermined count time can be from 1 second to 10 minutes, or can be set
to zero to enable continuous counting until stopped by the user.
Count mode operation is very flexible, depending on the units chosen. A
common choice is for the count mode to just perform a scaler count for a
specified time, with a resulting answer in counts (equaling detected radiation
events).
There are two different options for COUNT mode, which can be set
through software.
Go to “Device Count Display Mode” in the Device or Others tab
(depending on Software version). Enter/Select the desired option into the
“Value” field.
0 - will only show the count-down timer while timer is active
(default selection).
1 - will cycle between showing the count-down timer and the
current reading.
2 - will only show the current gathered reading.
Note:
If the Data Logging Option is installed, tapping the LOG
button will start a count and automatically log the result. A
long press of the LOG button during the count will toggle the
display between the timer and reading.
Count Mode Audio Mode will enable\disable click audio during a COUNT.
0 - Disabled -default selection (Mute icon will always be
illuminated in COUNT mode.)
1- Enabled