Ludlum Measurements 3001 User manual

Model 3001 Multi-Detector Survey Meter
Ludlum Measurements
December 2021
Serial Number: 25009185 and Succeeding
Firmware: n42.4810 and Higher

Model 3001 Multi-Detector Survey Meter
Ludlum Measurements
December 2021
Serial Number: 25009185 and Succeeding
Firmware: n42.4810 and Higher

STATEMENT OF WARRANTY
Ludlum Measurements, Inc. warrants the products covered in this manual to be free of de-
fects 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 lim-
its 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, G-M 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 war-
ranty 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 contain-
ing return shipping address, customer name, telephone number, description of service re-
quested, 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]

CONTENTS
Contents 3
List of Figures 5
List of Tables 7
1 Introduction 9
2 Getting Started 11
2.1 Unpacking and Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Battery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Instrument Operational Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.1 Turning the Instrument On . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Sigma Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5 Detector Failure Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5.1 Detector Loss of Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5.2 Detector Over Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5.3 Detector Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6 Instrument Use And Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6.1 ON/ACK Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6.2 UNITS Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.6.3 DETECTOR Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.6.4 MODE Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.6.5 LOG Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.7 RATE Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.8 MAX Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.9 COUNT Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3 Specifications 27
4 Setup Mode 31
4.1 Setup Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.2 Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.3 Entering Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.4 Setup Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5 Model 3001 List of Parameters (in order) . . . . . . . . . . . . . . . . . . . . . . . 37
4.6 Setup Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.7 Setup Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.8 Setup Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.9 Setup Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
4.10 Setup Page 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5 Datalogging 51
3

4CONTENTS
5.1 Datalogging Operation – Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.2 Datalogging Operation – Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.3 Datalogging Operation – Mode 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.4 Data Log Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.5 Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6 Software 55
6.1 Connecting to Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7 Advanced Features 57
7.1 Dead Time Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.2 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.3 R to Sv Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.4 Software Calibration Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.5 Instrument Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.6 Other Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.7 Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.8 Real-time Streaming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.9 Button Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.10 CPS Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8 Safety Considerations 61
8.1 Environmental Conditions for Normal Use . . . . . . . . . . . . . . . . . . . . . 61
8.2 Warning Markings and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.3 Cleaning and Maintenance Precautions . . . . . . . . . . . . . . . . . . . . . . . 62
9 Revision History 63
10 Recycling 67
11 Options 69
12 Standard Parts List 71
A Auxiliary Communications 73
A.1 AuxCom Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
A.2 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
A.3 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
A.3.1 AuxCom Usage - Hot Key . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
A.3.2 AuxCom Usage - Pairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
A.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
A.4.1 AuxCom Setting - Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
A.4.2 AuxCom Setting - Off Time . . . . . . . . . . . . . . . . . . . . . . . . . . 77
A.4.3 AuxCom Setting - Pwr Mode . . . . . . . . . . . . . . . . . . . . . . . . . 77
A.4.4 AuxCom Setting - Write Protect . . . . . . . . . . . . . . . . . . . . . . . . 77
A.4.5 AuxCom Setting - Encryption . . . . . . . . . . . . . . . . . . . . . . . . . 78
A.4.6 AuxCom Setting - Auto Mode Interval . . . . . . . . . . . . . . . . . . . . 78
Ludlum Measurements, Inc.

LIST OF FIGURES
2.1 Startup Display (All Segments Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Firmware Version Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3 Battery Voltage Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4 Startup Display Showing 189 Stored Data Records . . . . . . . . . . . . . . . . . . . 13
2.5 Detector Loss of Count Display (Display Will Flash) . . . . . . . . . . . . . . . . . . 15
2.6 Detector Over Range (Display Will Flash) . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.7 Detector Overload Alarm (Display Will Flash) . . . . . . . . . . . . . . . . . . . . . . 16
2.8 RATE Mode Displaying Background Radiation Rate . . . . . . . . . . . . . . . . . . 21
2.9 MAX Mode Display With ALARM Indication . . . . . . . . . . . . . . . . . . . . . . . 22
2.10 COUNT Mode Displaying COUNT Timer of 5 Minutes, 30 Seconds . . . . . . . . . 25
4.1 Setup Page Selection Display (showing page 4-CAL) . . . . . . . . . . . . . . . . . . 36
5.1 Displaying Datalog Table Index of 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.2 Displaying Datalog Location ID Table Index of 36 . . . . . . . . . . . . . . . . . . . . 52
A.1 Example – Device Selection In Lumic Linker App (iOS) . . . . . . . . . . . . . . . . 75
A.2 Example – Pairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
A.3 Example – Model 3000 series Found in Lumic Linker App (iOS) . . . . . . . . . . . . 75
A.4 Example – Entering PIN In Lumic Linker App (iOS) . . . . . . . . . . . . . . . . . . . 75
A.5 Example – Lumic 2.0 Calibration Software . . . . . . . . . . . . . . . . . . . . . . . . 76
5

LIST OF TABLES
2.1 COUNT Mode Units and Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Dead Time and Calibration Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.3 Primary Units and Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.4 Primary Unit Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.5 Secondary Units and Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.6 Secondary Unit Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.7 Response Time Based on Count Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1 Features That Affect Units in All Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 58
12.1 Standard Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
A.1 AuxCom Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
A.2 AuxCom Auto Off Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
A.3 AuxCom Power on at Boot-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
A.4 AuxCom Write Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
A.5 AuxCom Encription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
A.6 AuxCom Auto Mode Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
7

CHAPTER
1
INTRODUCTION
The Model 3001 is an ergonomic, lightweight instrument which can be used for radiation
survey purposes. The Model 3001 features the ability to measure radiation in count rate,
exposure rate/dose, activity rate, time-averaged rates, and scaler counts. It supports up to
four external radiation detectors to detect alpha, beta, or gamma radiation. Each detector
may have its own set of calibration and user parameters. The DETECTOR button is used to
select the active detector. The instrument features a large backlit LCD (liquid crystal display),
an easy, intuitive use keypad, and audio feedback. The unit body is made of lightweight but
durable plastic. It is intended for outdoor use and can resist splashing water. The foam grip
provides a comfortable, ergonomic grip but may be removed for ease of decontamination.
Three modes of operation are available for the Model 3001 – RATE, MAX, and COUNT.
RATE mode operation will display the current count, exposure, or activity rate.
MAX mode is used to capture the highest count, activity, or exposure rate detected – useful
for finding a peak rate, or frisking 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 pressing the UNITS
button.
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 inte-
grated exposure or dose (R or Sv). The primary keypad includes four push buttons: ON/ACK
to toggle instrument power and adjust the click audio level, UNITS to change between avail-
able units, DETECTOR to change available external detectors, and MODE to switch between
available modes.
The standard handle includes a LOG button that allows the instrument to log up to 1000
data points when activated with the optional Lumic Datalogging Kit. The display will be
automatically back-lit if light levels are low or can be set to a user defined light level. The
display back-light can also be configured for “Continuous On” operation. RATE, MAX, and
COUNT modes can be silent or utilize a “click” audio; the “click” audio is always silent during
COUNT mode by default. A "sigma" audio mode can be enabled (disabling the "click" audio)
in RATE and MAX modes when scintillator detectors are used, and this mode makes it easy
9

10 CHAPTER 1. INTRODUCTION
for the user to find small increases above the background radiation level. In this mode, the
instrument measures background for 8 seconds after power-up, and then beeps whenever
the rate increases by a small amount. Users are freed from watching the numeric value to
"find" something. They can simply listen for multiple beeps. Setup of the instrument is
accomplished through the front-panel buttons, or through Lumic 2.0 software available from
Ludlum Measurements.
Front-panel setup can be disabled via the internal switch on the Model 3001 in order to pro-
tect settings from inadvertent changes. When the settings are protected, the user can view
the settings or modify a limited number of settings as defined with the Lumic software. Us-
ing the Lumic software, the Model 3001 can be configured to allow changes to the alarms
and/or count time even when in protect mode.
The unit is operated with four alkaline AA batteries for operation from -20 to 50 °C (-5 to 122
°F). Battery life is approximately 500 hours (as low as 60 hours w/backlight always on) under
normal usage. A low-battery indicator on the LCD warns when less than 16 hours of battery
life remain. The Model 3001 may optionally be provided with a 1/8-inch stereo headphone
jack that would allow for headphone use for audio output. It is located near the left handle
base.
If a headphone jack is not in use, the Model 3001 may optionally be provided with an RS-
232 serial output for connection to PC or other electronic device. For more advanced use:
See Appendix A for information on our Auxiliary Communications features, which allow the
instrument to expand its capabilities with a variety of external devices through a standard
serial interface.
Ludlum Measurements, Inc.

CHAPTER
2
GETTING STARTED
2.1 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 de-
tectors (if applicable). The Model 3001 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 pre-
vent damage to the instrument during shipment. Every returned instrument must be ac-
companied by an Instrument Return Form, which can be downloaded from the Ludlum web-
site at www.ludlums.com. Find the form by clicking the “Support” tab and selecting “Service
Department” from the drop-down menu. Then choose the appropriate form located under
the "Returned Goods Form" heading.
2.2 Battery Installation
A low-battery indicator appears at the top 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:
1. Turn off power to the instrument.
2. Turn the instrument over so that the bottom of the instrument is facing up.
3. Use a straight, medium-sized screwdriver to turn the single screw on the battery
cover one-quarter turn counter-clockwise.
4. Release and remove the battery cover.
5. Replace all four AA batteries.
6. Replace the cover and turn screw one quarter of a turn clockwise to secure.
11

12 CHAPTER 2. GETTING STARTED
2.3 Instrument Operational Test
Once this procedure has been completed, the instrument is ready for use.
2.3.1 Turning the Instrument On
Turn the instrument ON by pressing the ON/ACK button for about a second, and then re-
leasing. 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 2.1.
Figure 2.1: Startup Display (All Segments Shown)
The instrument then displays the firmware version. Please refer to figure below.
Figure 2.2: Firmware Version Display
Note: Firmware versions with Bq units are equipped with auxiliary communication.
Beginning with the n42 version firmware, the tick marks below the firmware number define
the board generation which will help with future firmware updates. Once n42 is installed,
the user will no longer have to open the instrument to determine which version of the main
processor board was used in the instrument. Instead, use the following table to determine
which main processor board is installed in the instrument:
• 1 tick - 5498-440
• 2 ticks - 5519-042
• 3 ticks - 5519-773
Ludlum Measurements, Inc.

2.3. INSTRUMENT OPERATIONAL TEST 13
The instrument then displays the battery voltage. Please see Figure below.
Figure 2.3: Battery Voltage Display
The instrument then displays the number of stored records if datalogging is enabled. Please
refer to the figure below.
Figure 2.4: Startup Display Showing 189 Stored Data Records
The instrument will then move to normal operation, displaying the current rate for the Pri-
mary units (factory default: mR/h). This boot-up process takes about 5 seconds, plus an-
other 8 seconds if Sigma Audio is enabled.
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.
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.
To assure proper operation of the instrument and detectors(s) between calibrations, an in-
strument operational check including battery test and instrument test should be performed
at least daily or prior to use, whichever is less frequent. A reference reading (or readings)
with a dedicated check source should be obtained with the detector(s) in a constant and re-
producible manner at the time of calibration or at the time the instrument is received in the
field.
If at any time the instrument fails to read within 20% of the reference reading when using
the dedicated check source, it should be removed from service and sent to a calibration fa-
December 2021

14 CHAPTER 2. GETTING STARTED
cility for recalibration and/or repair. If desired, multiple readings may be taken at different
distances and/or with different sources so that other scales are checked.
Example of a Check Source reading:
Check Source # Rate Units
2.4 Sigma Audio
The Ludlum Model 3001 has the standard "click" audio that is widely used by radiation in-
struments; however, it also has a Sigma Audio mode that can be enabled to change the audio
sound. This mode is useful for scintillation detectors because their high count rate makes
the "click" audio less useful.
In the sigma audio mode, the instrument measures the background radiation for eight sec-
onds on power-up, and then automatically sets a low threshold alarm rate above the back-
ground rate. Afterwards, the instrument will produce a beep any time that the instrument
"sees" more than this threshold value. The user doesn’t need to watch the display to find a
small increase over background; the user may just listen for multiple beeps. Thus, the unit
has an audio alarm that, on power-up, adjusts to just above the current background level
and provides a sensitive audio indication to the user.
Note that this audio alarm can also work in conjunction with the fixed alarm, i.e. the user
can have both a floating audio alarm (resulting in audio beeps) based on the background
level, and a fixed tone audio and a steady ALARM icon when a predetermined fixed alarm
level is exceeded.
2.5 Detector Failure Diagnostics
Note that the Model 3001 has its own diagnostic tests to ensure that the detector is function-
ing correctly.
2.5.1 Detector Loss of Count
If the detector stops detecting radiation for a settable number of seconds, the Model 3001
will flash the minimum display value to indicate which units have been affected by the loss
of count event. This indication is common if the unit is powered up without a detector con-
nected. 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.
Ludlum Measurements, Inc.