LUDLUM 3001, 3000 User Manual

LUDLUM MODEL 3001

MULTI-DETECTOR SURVEY METER

USER’S MANUAL

April 2017

LUDLUM MODEL 3001

MULTI-DETECTOR SURVEY METER

USER’S MANUAL

April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual

Model 3001 Multi-Detector Survey Meter 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, 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
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]

Model 3001 Multi-Detector Survey Meter 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

Sigma Audio 2-4

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 Firmware Values 4-2

Entering Setup Mode 4-3

Setup Mode Operation 4-5

Datalogging Option 5

Datalogging Operationg – Mode 1 5-2

Datalogging Operationg – Mode 2 5-3

Datalogging Operationg – Mode 3 5-4

Specifications 5-4

Software

Connecting to Software 6-1

Extended Features 6-2

6

Safety Considerations 7

Environmental Conditions for Normal Use 7-1

Model 3001 Multi-Detector Survey Meter User’s Manual

Warning Markings and Symbols 7-1

Cleaning and Maintenance Precautions 7-2

Revision History 8

Recycling 9

Options 10

Standard Parts List 11

Appendix A: Typical Values A

Model 3001 Multi-Detector Survey Meter User’s Manual Section 1

Section

1

Introduction

The Model 3001 is an ergonomic, lightweight instrument which can be
used for radiation survey purposes. It features the ability to measure
radiation in count rate, exposure rate/dose, activity rate, integrated
exposure/dose, time-averaged rates, and scaler counts. The Model 3001
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), 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. 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

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. 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"

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 1

audio) in RATE and MAX modes when scintillator detectors are used,
and this mode makes it easy 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 software available from Ludlum Measurements.

Front-panel setup can be disabled via the internal switch on the Model
3001 in order to protect settings from inadvertent changes. When the
settings are protected, the user can only view the settings, and the
password-protected software must be used to change any of the
settings. The Model 3001 can be configured through software 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
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 to the left of the detector connector.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 2

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 all four AA batteries.

5. Replace the cover and turn screw one quarter of

a turn clockwise to secure.

Section

2

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 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 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 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:

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 2

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 3001, 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 units are equipped with auxiliary
communication.

The instrument then displays the battery voltage. Please refer to Figure 3.

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Figure 3: Battery Voltage display

The instrument then displays the number of stored records if datalogging
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: mR/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.

The user may select the Secondary units (default: cpm) by pressing the Units
button.

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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

137

Cs 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.

Sigma Audio

The Ludlum Model 3001 has the standard "click" audio that is widely used
by radiation instruments. 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 alarm for eight seconds on power-up, and then automatically sets a
low threshold rate above the background rate. Then 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.

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Detector Failure Diagnostic

Note that the Model 3001 has its own diagnostic tests to ensure that the
detector is functioning correctly. The Model 3001 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 3001 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 icon
ALARM is also displayed at the top of the screen. The user should ensure
whether this condition is being caused by a high radiation field, by a shorted
cable, 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 kcpm); will also flash.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 2

Detector Overload

As another diagnostic test, the Model 3001 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 3001 will return to normal operation.

Figure 7: Detector Overload Alarm; will also flash.

Instrument Use and Controls

With four front-panel buttons (as seen in front-panel drawing in front of
manual), the Ludlum Model 3001 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. Long-pressing 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 it 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.

ON/ACK button: Used to power the Model 3001 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 and hold for approximately four 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.

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Short Press (tap-pressing the button and releasing in under a half second):

 Normal Operation: 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 (pressing the button and releasing for at least a half second):

 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: When in Rate mode, a long press of the ON/ACK.

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:

Short Tap (pressing the button and releasing under a half second)

 Used to switch between Primary and Secondary units in all available

modes.

DETECTOR button:

Short Tap (pressing the button and releasing under a half second)

 Used to select the active detector, as evidenced by the

corresponding DET1, DET2, DET3, or DET4 LED. Unit saves
this setting prior to shutting down, so it will power up with the
same detector setting.

Long Press (pressing the button and releasing for at least a half second)

 Only used in the device menu. While viewing the Detector

Overload parameter, a long press will allow the user to view the
actual current level. Another long press will return user to overload
setting.

MODE button:

Short Tap (pressing the button and releasing under a half second)

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 Used to advance between the three operating modes: RATE, MAX,

and COUNT. Note that MAX and/or COUNT mode may be
disabled from use.

 The device menu increments selected digit/text to the next available

option.

RATE Mode Operation

In RATE mode, the current count rate will be displayed.

Long-pressing the ON/ACK 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 ON/ACK button will turn the “click” audio on/off. When Sigma
Audio is enabled, tapping the ON/ACK button will toggle the Sigma Audio
beep on/off. If dual Level audio is enabled, it will toggle between “Hi, LO,
and 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 non­latching in RATE mode. When Sigma Audio is enabled, and an alarm
condition is not present, a long press (at least a half second) of the
ON/ACK button will reset the Sigma Audio alarm level. The Sigma count
can only be reset in RATE mode.

Figure 8: RATE mode display showing typical background radiation

rate and the low-battery icon.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 2

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 ON/ACK button will turn the “click” audio on/off. When
Sigma Audio is enabled, tapping the ON/ACK button will toggle the Sigma
Audio beep on/off.

Under a non-alarm or alarm condition, a long press of 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.) Tapping the
ON/ACK button a second time will toggle the audio setting. 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 ALARM indicator.

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COUNT Mode Operation

When entering COUNT Mode from another operational mode, the
currently selected COUNT Unit 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 DisplayMode” in the Device or Others tab
(depending on software version). Enter the desired option into the “Value”
field.

 0 - will only show the countdown timer while the timer is active

(default selection).

 1 - will cycle between showing the countdown 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. Audio ‘clicks’ are disabled in COUNT mode

by default

Device Count Mode AudioMode will enable\disable click audio during a
COUNT

 0 – Disabled (Mute icon will always be illuminated in COUNT

mode.)

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 1- Enabled

Model 3001 Multi-Detector Survey Meter User’s Manual Section 2

Note:

Sigma audio is disabled in Count Mode. If Sigma Audio and Count
Mode Audio are enabled, click audio will be utilized in Count
Mode. If a result in terms of activity is desired, the scaler count can
also be in units of "d" or disintegrations. But if the count units are
chosen to be cpm or cps, then the resulting answer is an averaged
count rate over the time interval. Similarly, if count units of Bq or
dpm are chosen, the resulting answer is an averaged disintegration
rate.

Note:

If the user desires the instrument to show results in terms of
disintegrations/area (eg. dpm/100cm2 or Bq/cm2), then the
appropriate factor should be placed in the Efficiency parameter.

Other choices are to have count mode units of R/h or Sv/h, in which case
the COUNT mode result is an averaged exposure or dose rate. But if count
mode units of R or Sv are chosen, the result is shown in accumulated
exposure or accumulated dose over the chosen count time. The following
tables lists the possibilities:

UNITS RESULT

c counts per count time
d disintegrations per count time
cpm, cps count rate averaged over the count time
dpm, Bq disintegration rate, averaged over the count time
R/h, Sv/h exposure or dose rate, averaged over the count time
R, Sv integrated exposure or dose over the count time

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In COUNT mode, operation depends on the current state of the Count
Timer.

When the Count Timer is Ready:

 The display will show the Count Time.
 Tapping the UNITS button will switch between the Primary and

Secondary Count Units. The newly selected Count Units will be
displayed for approximately one second, and the display will then
return to the Count Timer.

 Long-pressing the ON/ACK button starts the Count Timer.
 If other operational modes are available, tapping the MODE button

will move to the next available operational mode.

When the Count Timer is active:

 The display will show either Count Time (default), both Count Time

and Counts, or just counts, depending on Count Display Mode.

 Doing a long press (pressing the button and releasing afater at least a

half second) the ON/ACK button will reset the Count Timer.

 Tapping the UNITS button will display the other unit if enabled.
 Click audio, if enabled, can be turned on and off by tapping the

ON/ACK button.

 If an alarm condition occurs, the ALARM display indicator will turn

on. Alarm audio will sound after the count is completed if the result
is over the alarm threshold. (If the count unit is an averaged rate, it is
possible for the ALARM icon to come on during the count, but if
the averaged rate falls below the alarm threshold by the end of the
count, no ALARM will be active.)

 If other operational modes are available, tapping the MODE button

will cancel the current Count Timer and move to the next available
operational mode.

When the Count Timer has finished:

 The display will show either the accumulated total for c, d, R, and

Sv, or the timed ratemeter average for cps, cpm, Bq, dpm, or the
average exposure or average dose in R/h and Sv/h.

 Tapping the UNITS button will switch between the Primary and

Secondary Count Units.

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 Pressing the ON/ACK will reset the Count Timer.

Model 3001 Multi-Detector Survey Meter User’s Manual Section 2

 If an alarm condition occurred during the Timed Count, a

continuous audio tone will sound, and the ALARM display indicator
will already be on. Tapping the ON/ACK button once will
acknowledge and turn off the continuous tone alarm audio. Doing a
long press (pressing the button and releasing after at least a half
second) to the ON/ACK button will clear the alarm condition and
reset the Count Timer. Alarm audio will sound after the count is
completed if the result is over the alarm threshold.

 If other operational modes are available, tapping the MODE button

will move to the next available operational mode.

Figure 10: COUNT mode operation showing COUNT Timer of 5
minutes, 30 seconds.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 3

Section

3

Specifications

0

Detector: may be Geiger-Mueller (GM), scintillator, or proportional

HV Range: 400-1500 Vdc

Threshold Range: 4-100 mVdc

Resolving Time: approximately 5 µsec as defined by IEC 60325

Alarms: count rate, exposure/dose, and count alarm setpoints adjustable over

the display range

Overload: high count rate saturation protection prevents false display of lower
count rates

Zero Protection: after a user-settable number of seconds of no pulses from

detector, unit will flash a zero reading and the alarm audio will be triggered

LCD Display: 3-digit LCD with large 20 mm (0.8 in.) digits, (k)cps, (k)cpm,
(k)Bq, (k)dpm, (µ)(m)R(/h), (µ)(m)Sv(/h), low-battery indicator, MAX,
ALARM, AUDIO

Display Range:

 0.0 cps to 99.9 kcps
 0.00 cpm to 999 kcpm
 0.00 Bq to 99.9 kBq
 0.00 dpm to 999 kdpm
 0.00 µR/h to 999 R/h
 0.00 µSv/h to 999 Sv/h

Headphone Jack (optional): 1/8 inch stereo jack for use with headphones for
audio output. It is located to the left of the detector connector.

Backlight: built-in ambient light sensor automatically activates low-power
LED backlight, unless internal dip switch is set to continuous-on (will reduce
battery life)

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User Controls:

 ON/ ACK – long press to turn ON, tap to acknowledge alarms and

silence alarm tone, long press to reset Sigma Audio alarm, long press to
reset Rate, and hold for OFF. Tap to turn “click” audio on/off, or turn
Sigma Audio beep on/off

 MODE – alternates between RATE (count rate), MAX ( captures peak

rate), and COUNT ( user-selectable preset count time from 0 to 10
minutes)

 DETECTOR – tap to change active detector to the next enabled

detector

 UNITS – changes the units from count rate (cpm, cps), to

dose/exposure (µSv/h, mR/h) or disintegration (dpm, Bq)

Response Time: user-selectable from 1 to 60 seconds, or auto-response rate
FAST or SLOW

Audio: click audio greater than 65 dB at 0.6 m (2 ft), alarm audio at greater than
72 dB, approximately 4.5 kHz

Power: four alkaline “AA” batteries

Battery Life: approximately 500 hours of operation (as low as 100 hours with

backlight configured for continuous-on), 16-hour low-battery warning

Maximum Current: 35 mAdc

Construction: high-impact plastic with water-resistant rubber seals and

separate battery compartment

Temperature Range: -20 to 50 ˚C (-5 to 122 ˚F), may be certified for
operation from -40 to 65 ˚C (-40 to 150 ˚F)

Environmental Rating: NEMA (National Electrical Manufacturers
Association) rating of 4x or IP (Ingress Protection) rating of 65

Size: 16.5 x 11.4 x 21.6 cm (6.5 x 4.5 x 8.5 in.) (H x W x L)

Weight: 0.9 kg (2.0 lb)

Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Section

4

Setup Mode

Warning!

Only advanced users or administrators should consider changing
any of the parameters in the following section. Incorrect settings
could jeopardize the safety of users depending on this instrument.

Setup Overview

Your instrument has been shipped from Ludlum Measurements only after
passing electronic checkout, a 24-hour burn-in process, and a careful calibration
process. Calibration papers are supplied with each instrument shipped from
Ludlum Measurements.

Recalibration should be accomplished after maintenance or adjustments have
been performed on the instrument. Recalibration is not normally required
following instrument cleaning or battery replacement. Recalibration does not
require any special tools or software to perform.

Ludlum Measurements offers a full-service repair and calibration department.
Not only do we repair and calibrate our own instruments, we also service most
other manufacturers’ instruments. Calibration procedures are available upon
request for customers who choose to calibrate their own instruments.

Note:

Ludlum Measurements, Inc. recommends recalibration at intervals
no greater than one year, assuming that regular operational checks
are performed. Check the appropriate local, state, and federal
regulations to determine required recalibration intervals.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Setup Parameter

Default

Value

Notes

P1-1

Calibration Constant Mantissa

200

200 e6 Counts/R
P1-2

Calibration Constant Exponent

06

P1-3
Dead Time Correction

0

Scintillator 5-10 µsec
GM Tube 50-100

P1-4

Dead Time Correction 2 Mantissa

0

P1-5

Dead Time Correction 2 Exponent

0

P1-6

Efficiency

15.0

Efficiency %

P1-7

High Voltage Setpoint

900

Volts

P1-8

Pulser Threshold

35

millivolts

P1-9

Detector Current Overload Threshold

100

microamps

P1-10

Loss of Count Alarm Time

60

Seconds

P1-11

Detector Enable

En

Enabled

P2-1

Primary Units and Minimum Display

000 cpm

P2-2

Primary Units Maximum Display

999 kcpm

P2-3

Primary Units RATE/ MAX Mode Alarm
Point

000

Disabled

P2-4

Primary Count Units and Minimum Display

000 c

P2-5

Primary Count Alarm Point

000

Disabled

P3-1
Secondary Units and Minimum Display

0.00

mR/h

Non-SI exposure rate

P3-2
Secondary Units and Maximum Display

999

mR/hr

P3-3

Secondary Units RATE/ MAX Mode Alarm
Point

000

Disabled

P3-4

Secondary Count Units and Minimum
Display

0.00 mR

Non-SI exposure

P3-5

Secondary Count Alarm Point

000

Disabled

P4-1
Response Time

0

Enable Auto
Response

P4-2

Auto-Response Rate

S

Slow Auto Response

P4-3
Operational Modes

0

All Modes Available

P4-4

Count Time

1:00

One Minute

P4-5

Auto Shutdown Time

0

Hours (0 – Disabled)

Default Detector SetupFirmware Values

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Setup Parameter

Default

Value

Notes

P4-6

Backlight Threshold

LO

Most Sensitive

P4-7

Sigma Audio

OFF

Disabled

P4-8

Dual Level Audio

OFF

Disabled

P5-1

Datalogging Mode (optional)
Note: These options are not editable
through the Device Menu. They can only be
manipulated when connected to Lumic
Software.

1

Mode 1

P5-2

RTC Month

1

P5-3

RTC Day

7

P5-4

RTC Year

14

2014

P5-5

RTC Hour

16

24-hour format

P5-6

RTC Minute

30

P5-7

RTC Second

00

Default Device SetupFirmware Values
(continued)

Entering Setup Mode

To enter Setup Mode, power down the Model 3001, then turn the unit back
ON. Following the display of the Firmware version, when the instrument has
begun normal operation, tap the MODE button three times (within four
seconds) to enter Setup mode.

Note:

This process is different if you are in Sigma Audio Mode, rather
than in the “click” Audio Mode. While trying to enter Setup
Mode with Sigma Mode enabled, once the screen displays the
firmware number and then begins the Sigma countdown, press
the Mode button three times. Do not wait until the countdown
is complete, which will prevent you from getting into the Setup
Mode. There is no countdown for the “click” Audio Mode.

Entry to Setup Mode can be confirmed when the numeric portion of the display
shows -1, indicating Detector 1 parameters will be shown. To select another
detector, tap the DETECTOR button. To view or edit the selected detector’s
settings, tap the UNITS button to advance to Setup Page Selection. The

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

display will then show P-1, indicating the first setup page is selected. Select the
desired Setup Page by tapping the MODE button. Tap the UNITS button to

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

advance through the parameters available on the selected Setup Page. To select
a different detector or setup page, first advance to the Setup Page Selection by
pressing the UNITS button. Pressing the UNITS button again while the page
selection is active will return to the Setup Detector Selection. Pressing the
UNITS button again while the detector selection is active will exit the device
men. To return to normal operation from anywhere in the menu, press and
hold the UNITS button for approximately 5 seconds.

Note:

If the menu is not exited properly, any changes made will not be
saved.

SETUP PROTECT: The Model 3001 parameters can be protected from
unauthorized changes via the internal switch located on the Model 3001 circuit
board. To change the switch, open the battery compartment and remove the
batteries from the Model 3001. Next, loosen the six pan head screws that fasten
the bottom cover.

Gently remove the bottom cover of the instrument. The DIP (dual in-line
position) switch should now be visible in the upper left-hand corner of the
circuit board.

To protect the Model 3001 from changes in Setup mode, slide DIP Switch 2
(the rightmost switch) to the ON (forward) position. If DIP Switch 2 is in the
OFF (back) position, changes are allowed in Setup mode. Once the DIP Switch
is set as desired, gently replace the back cover and the six pan head screws.
Install the batteries, and replace the battery cover.

There are three different options for protect mode, which can be set through

Lumic Calibration Software. Locate the Parameter “Device Setup Prtct” in the
Others tab. Enter the desired option into the “Value” field.

- Normal: All Parameters are protected from change through the

device menu.

- Bypass Alarms: All Parameters except for Rate and Count Alarms

are protected from change through the device menu.

- Bypass Alarms Count: All Parameters except for Rate Alarms,

Count Alarms, and count time are protected from change through
the device menu.

Note that with the DIP Switch 2 in the ON position. Setup mode may be
entered and parameters viewed, but changes cannot be made.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

DISPLAY BACKLIGHT ‘Continuous On’: The Model 3001 display
backlight can be set to remain on continuously during operation. Follow the
steps above for SETUP PROTECT, but use DIP Switch 1 for display
backlight selection. Setting DIP Switch 1 to the ON (forward) position will
configure the display backlight to remain on during operation. Set DIP Switch 1
to the OFF (back) position, and the display will be backlit only when light levels
are low.

Note:

Setting the display backlight for continuous-on operation can
result in reduced battery life. The backlight can be configured to
always be off as well through the device menu or Lumic
Calibration Software.

Setup Mode Operation

Setup Detector Selection: Once the Model 3001 is in Setup mode, the Setup
Detector Selection will be displayed on the LCD, and the detector number will
be blinking, indicating it as the selected item. Tap the DETECTOR button to
choose the detector. Once the desired detector is shown, tap the UNITS button
to advance to Setup Page Selection. Pressing the UNITS button will exit the
menu.

Figure 11: Setup Detector Selection display (showing detector 2).

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Setup Page Selection: Once the Model 3001 is in Setup mode, the Setup Page
selection will be displayed on the LCD, and the Page number will be blinking,
indicating it as the selected item. The number of available parameters per Setup
Page will be displayed using the graph — the number of segments indicating the
number of parameters. Tap the MODE button to choose the Setup Page. Once
the desired Setup Page is shown, tap the UNITS button to move to the first
parameter of that Setup Page. Pressing the UNITS button will to the Detector
Page Selection.

Figure 12: Setup Page Selection display (showing page 4).

Long-pressing the UNITS button, no matter what parameter is shown, will first
return the user back to the Setup Page Selection screen. Pressing and holding
the UNITS button in Setup Page Selection will return to Setup Detector
Selection. If the UNITS button is then held down for about 5 seconds, the
display will exit the Setup Mode.

The list below shows the four setup pages and the parameters, in order, on each
page.

Model 3001 List of Parameters (in order)

Page 1 (P-1)

 Calibration Constant Mantissa
 Calibration Constant Exponent
 Dead Time Correction 1
 Dead Time Correction 2 Mantissa
 Dead Time Correction 2 Exponent
 Efficiency
 High Voltage Setting
 Pulse Threshold

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

 Detector Current Overload Threshold
 Loss of Count Alarm Time
 Detector Enable

Page 2 (P-2)

 Primary Units and Minimum Display
 Primary Units Maximum Display
 Primary Units RATE/MAX Mode Alarm Point
 Primary COUNT Units and Minimum Display
 Primary COUNT Units Alarm Point

Page 3 (P-3)

 Secondary Units and Minimum Display
 Secondary Units Maximum Display
 Secondary Units RATE/MAX Mode Alarm Point
 Secondary COUNT Units and Minimum Display
 Secondary COUNT Units Alarm Point

Page 4 (P-4)

 Response Time
 Auto Response Rate
 Operational Modes
 Count Time
 Auto Shutdown Time
 Backlight Threshold
 Sigma Audio
 Dual Level Audio

Setup Parameter Adjustment: Tap (pressing the button and releasing under a
half second) the MODE button to adjust the value for the selected item. When
the appropriate value is selected for that item, tap the ON/ACK button to
move to the next item. When the desired value is displayed, tap the UNITS
button to advance to the next parameter. The graph will display the total
number of parameters available on the current Setup Page, and the current

parameter’s position will be blinking. When the Model 3001 is in PROTECT

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Detector

Dead Time

Calibration Constant

Model 44-2

10 µsec ±5 µsec

100e+08

Model 44-6

100 µsec ±35 µsec

709e+05

Model 44-7

262 µsec ±35 µsec

139e+06

Model 44-9

85 µsec ±35 µsec

200e+06

Model 44-38

100 µsec ±35 µsec

709e+05

mode (dipswitch setting), the Setup parameters will cycle through to display
the set values, but changes are not possible.

The order of Setup parameters for the Model 3001 is as follows:

Setup Page 1

Calibration Constant Mantissa (Default 200) - Tap ON/ACK to select the

value to adjust, and MODE to adjust the value. Value is used with Calibration
Constant Exponent to express counts per selected exposure unit. Available
values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (1-9)

Calibration Constant Exponent (Default 6) - Tap ON/ACK to select the
value to adjust, and MODE to adjust the value. Value is used with Calibration
Constant Mantissa to express counts per selected exposure unit. Available
values are:

Ones Place (0-9)

Tens Place (0-1)

Dead Time Correction (Default Varies) - Tap ON/ACK to select the value
to adjust, and MODE to adjust the value. Value is in microseconds. Should be
set to zero when checking instrument with pulser or function generator.
Otherwise, higher count rates will result in non-linearities. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

See the following table for examples with specific detectors.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Dead Time Correction 2 Mantissa (Default 0) - Tap ON/ACK to select the
value to adjust, and MODE to adjust the value. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (1-9)

Dead Time Correction 2 Exponent (Default 0) - Tap ON/ACK to select
the value to adjust, and MODE to adjust the value. Available values are:

Value between (-6 to -12)

Efficiency (Default 15.0%) - Tap ON/ACK to select the value to adjust, and
MODE to adjust the value. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0 or 1)

Normally the efficiency is used on a per detector basis or 4pi basis, i.e. the
efficiency of the detector is calculated by dividing the count rate received from a
source by the total disintegration rate of the source. When either dpm or Bq
units are chosen, the use of the 4pi efficiency allows the display of the source
size or activity on the Model 3001 display.

But if the user desires to have the Model 3001 show results in terms of
dpm/100 cm2, the user could manipulate the efficiency to produce this result by
multiplying the efficiency times the ratio of the detector area to 100 cm2. For
example, using a detector with an area of 15 cm2, if we start with 10% efficiency
to measure in dpm, then the parameter could be changed to 1.5% to measure in
dpm/100 cm2.

Or likewise for Bq/cm2, efficiency could be calculated as: efficiency = count
rate/disintegration rate*detector area (in cm2). For example, with the same
detector as above with an area of 15 cm2, and starting with an efficiency value of
15%, then the parameter could be changed to 225% to measure in Bq/cm2.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

High Voltage (Default 900 Volts) - Tap ON/ACK to select the value to
adjust, and MODE to adjust the value. Value is in Volts. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

k Multiplier (on/off)

Note: k multiplier also activates left-most decimal point. If k multiplier is used,
Hundreds Place value is limited to 0 and 1.

Pulser Threshold (Default 35 millivolts) - Tap ON/ACK to select the
value to adjust, and MODE to adjust the value. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Note: Audio is enabled for this parameter only for east of setting.

Detector Current Overload Threshold (Default 100) - Tap ON/ACK to

select the value to adjust, and MODE to adjust the value. Setting the Detector
Current Overload Threshold to 0 disables the Current Overload Alarm.
Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

A long press (at least a half second) of the DETECTOR button will cause the
display to show the actual live current reading. Repeating this process will return
you back to the overload threshold setpoint.

Loss of Count Alarm Time (Default 60 seconds) - Tap ON/ACK to select
the value to adjust, and MODE to adjust the value. Setting the Loss of Count
Alarm Time to 0 disables the alarm. Value is in seconds. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Detector Enable (Default En) - Tap MODE to enable (En) or disable (dIS)

operational use of the currently selected detector.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

cpm

kcpm

cps

kcps

dpm

kdpm

Bq

kBq

µR/h

mR/h

R/h

µSv/h

mSv/h

Sv/h

Setup Page 2

Primary RATE/MAX Units and Minimum Display (Default 0 µR/hr) -

Tap ON/ACK to select the value to adjust, and MODE to adjust the value.
Available values are:

Number of Decimal Places (0, 1, or 2)

Minimum Units (See list below.)

Primary Units RATE/MAX Maximum Display (Default 999 mR/hr) -
Tap ON/ACK to select the value to adjust, and MODE to adjust the value.
Units will be the same as selected earlier with Primary Units. Available values
are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0, 1, or 2)

Range (k on or off – cpm, cps, dpm, Bq; µ, m or none for R/h and Sv/h)

Primary Units RATE/MAX Mode Alarm Point (Default 000) - Tap
ON/ACK to select the value to adjust, and MODE to adjust the value. Units
will be the same as selected earlier with Primary Units. The ALARM LCD
Segment will be on to indicate an Alarm parameter. Set this Alarm Point to 000
to disable. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0, 1, or 2)

Range (k on or off – cpm, cps, dpm, Bq; µ, m or none for R/h and Sv/h)

Note: If the Primary Units has changed to a value other than that used to
previously set this Alarm Point, the Alarm Point will be reset to 000.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Primary

Units

Primary

Count

Units

Available

Primary

Units

Primary

Count

Units

Available

cps

kcps

cps

c

µR/h

mR/h

R/h

µR/h µR

mR/h mR

R/h R

cpm

kcpm

cpm c Bq

kBq

Bq

d

µSv/h

mSv/h

Sv/h

µSv/h µSv

mSv/h mSv

Sv/h Sv

dpm

kdpm

dpm

d

Primary Count Units and Minimum Display (Default 0 µR) - Tap
ON/ACK to select the value to adjust, and MODE to adjust the value.
Available values are:

Number of Decimal Places (0, 1, or 2)

Minimum Units depend on the selected Primary Units (See list below.)

Primary Count Alarm Point (Default 000) - Tap ON/ACK to select the
value to adjust, and MODE to adjust the value. Units will be the same as
selected earlier with Primary Count Units. Primary Count Units of c or d will
not be displayed, but mR or µSv will. The ALARM LCD Segment will be on to
indicate an Alarm parameter. Set this Alarm Point to 000 to disable. Available
values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0, 1, or 2)

Range (k on or off – cpm, cps, dpm, Bq; µ, m or none for R/h and Sv/h)

Note: If the Primary Count Units has changed to a value other than that used
to previously set this Alarm Point, the Alarm Point will be reset to 000.

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

cpm

kcpm

cps

kcps

dpm

kdpm

Bq

OFF

kBq

µR/h

mR/h

R/h

µSv/h

mSv/h

Sv/h

Setup Page 3

Secondary RATE/MAX Units and Minimum Display (Default 000 cpm)

- Tap ON/ACK to select the value to adjust, and MODE to adjust the value.

Available values are:

Number of Decimal Places (0, 1, or 2)

Minimum Units (See list below.)

Secondary Units RATE/MAX Maximum Display (Default 999 kcpm) -
Tap ON/ACK to select the value to adjust, and MODE to adjust the value. If
the Secondary Units is off, this parameter will be skipped. Units will be the same
as selected earlier with Secondary Units. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0, 1, or 2)

Range (k on or off – cpm, cps, dpm, Bq; µ, m or none for R/h and Sv/h)

Secondary Units RATE/MAX Mode Alarm Point (Default 000) - Tap
ON/ACK to select the value to adjust, and MODE to adjust the value. If the
Secondary Units is off, this parameter will be skipped. Otherwise, units will be
the same as selected earlier with Secondary Units. The ALARM LCD Segment
will be on to indicate an Alarm parameter. Set this Alarm Point to 000 to
disable. Available values are:

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0, 1, or 2)

Note: If the Secondary Units has changed to a value other than that used to
previously set this Alarm Point, the Alarm Point will be reset to 000.

Ludlum Measurements, Inc. Page 4-13 April 2017

Range (k on or off – cpm, cps, dpm, Bq; µ, m or none for R/h and Sv/h)

Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Secondary

Units

Secondary

Count

Units

Available

Secondary

Units

Secondary

Count

Units

Available

cps

kcps

cps

c off

µR/h

mR/h

R/h

µR/h µR

mR/h mR

R/h R

off

cpm

kcpm

cpm

c off

Bq

kBq

Bq

d off

µSv/h

mSv/h

Sv/h

µSv/h µSv

mSv/h mSv

Sv/h Sv

off

dpm

kdpm

dpm

d off

Secondary Count Units and Minimum Display (Default c) - Tap
ON/ACK to select the value to adjust, and MODE to adjust the value. If the
Secondary Units is off, this parameter will be skipped. Available values are:

Number of Decimal Places (0, 1, or 2)

Minimum Units depend on the selected Primary Units. (See list below.)

Secondary Count Alarm Point (Default 000) - Tap ON/ACK to select the
value to adjust, and MODE to adjust the value. If the Secondary Units is off,
this parameter will be skipped. Otherwise, units will be the same as selected
earlier with Secondary Count Units. The ALARM LCD Segment will be on to
indicate an Alarm parameter. Set this Alarm Point to 000 to disable. Available
values are:

Note: If the Secondary Count Units has changed to a value other than that used
to previously set this Alarm Point, the Alarm Point will be reset to 000.

Ludlum Measurements, Inc. Page 4-14 April 2017

Ones Place (0-9)

Tens Place (0-9)

Hundreds Place (0-9)

Number of Decimal Places (0, 1, or 2)

Range (k on or off – cpm, cps, dpm, Bq; µ, m or none for R/h and Sv/h)

Model 3001 Multi-Detector Survey Meter User’s Manual Section 4

Count Rate

Auto Response

Time – Fast

(Seconds)

Auto Response

Time – Slow

(Seconds)

Less than 3 kcpm (50 cps)

10.5

21

Between 3 kcpm and 4 kcpm (67 cps)

8.4

16.8

Between 4 kcpm and 6 kcpm (100 cps)

6.3

12.6

Between 6 kcpm and 12 kcpm (200 cps)

4.2

8.4

More than 12 kcpm

2.1

4.2

Setup Page 4

Response Time (Default 0 - auto) – Tap ON/ACK to select the value to be

adjusted and MODE to adjust the value. Setting the Response Time to a fixed
value is useful primarily when performing surveys to a fixed MDA (Minimum
Detectable Activity) level. Setting the Response Time to 0 will enable the Auto­Response mode for the Model 3001 (see the next parameter). Available values
for the Response Time (in seconds) are:

Ones Place (0-9)

Tens Place (0-6, 6 forces max response time of 60)

Auto-Response Rate (Default S) - Tap MODE to select Fast (F) or Slow (S).

When operating in Auto-Response mode, the Model 3001 will vary the
Response Time based on the Auto-Response Rate selected (Fast or Slow) and
the current Count Rate. The following table shows the response time for
different count rates when these auto response modes are chosen:

The Model 3001 also utilizes a Step function in Auto Response mode, which
enables faster response to a significant increase or decrease in Count Rate.
When the instrument detects a sudden change in count rate from the detector,
the response time is reduced to 1 second to quickly show the new value.

Operational Modes (Default 0 - All modes available) - Tap MODE to
adjust the value. Available values are:

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0 – RATE, MAX, and COUNT Modes

1 – RATE and MAX Modes only

2 – RATE and COUNT Modes only

3 – RATE Mode only

Model 3001 Survey meter User’s Manual Section 4

Count Time (Default 1 minute) - Tap ON/ACK to select the value to
adjust and MODE to adjust the value. Setting Count Time to 0 enables
continuous count until reset. If 9 minutes are selected, then the maximum
seconds value is 60; otherwise, the maximum seconds value is 59. Available
values are:

Ones Place (0-9)

Tens Place (0-6, 6 only available if minutes value is 19)

Hundreds Place (0-9)

Note:

The UNITS button can be used to advance to the next parameter. To
send Setup mode and save the current setting, press and hold the
UNITS button for approximately 5 seconds, or press the UNITS button
for at least a half a second two times.

Auto Shutdown Time (Default 0 - off) - Tap MODE to adjust the value.
Setting Auto Shutdown Time to 0 disables Auto Shutdown. Available values are:

Ones Place (0-9) hours

Backlight Threshold (Default LO –most sensitive) - Tap MODE to adjust
the value. Available values are:

LO – Backlight comes on at a higher ambient light level

There are two different options for Backlight Threshold LOW, which can be
set through software. Locate the Parameters in the Others tab. Enter the desired
number into the “Value” field.

- Low Light Turn On: The value will set the threshold that the backlight

will turn on at. (This should be lower than the Turn Off value.)

- Low Light Turn Off: The value will set the threshold that the backlight

will turn off at. (This should be higher than the Turn On value.)

HI – Backlight comes on at a lower ambient light level

There are two different options for Backlight Threshold HIGH, which can
be set through software. Locate the Parameters in the Others tab. Enter the
desired number into the “Value” field.

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Model 3001 Survey meter User’s Manual Section 4

- High Light Turn On: The value will set the threshold that the

backlight will turn on at. (This should be lower than the Turn Off
value.)

- High Light Turn Off: The value will set the threshold that the

backlight will turn off at. (This should be higher than the Turn On
value.)

OFF – Disables backlight

Sigma Audio (Default OFF) - Tap MODE to adjust the value. Available values
are:

ON – Sigma Audio Enabled

OFF – Sigma Audio Disabled (Normal ‘Click’ Audio active)

Note

The Sigma Mode may not work properly until the 8-second background is
completed. If the 8-second background count is too low or too high, the
device will continually beep until an acceptable background count rate (500
cpm - 200 kcpm) is obtained. Sigma Audio is disabled in Count Mode. If
Count audio and Sigma Audio are enabled, Count audio will be “click”
audio.

Dual Level Audio (Default OFF) - Use MODE to adjust the value. Available
values are:

ON – Dual Level Audio Enabled (Audio settings: Hi, LO, and Mute)

OFF – Dual Level Audio Disabled (Audio settings: Hi and Mute)

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Model 3001 Multi-Detector Survey Meter User’s Manual Section 5

Section

5

Datalogging Option

The datalogging feature of the Model 3001 allows the user to log radiation
readings with the use of a handle-mounted LOG button. Data can be
logged in any of the Model 3001’s operational modes (RATE, MAX, and
COUNT). Up to 1000 data points can be taken and stored internally.
Depending on the chosen Datalogging Mode, the user can quickly save
logged data using a single Location ID, or select from up to 250 stored
Location IDs. A Real Time Clock (RTC) is utilized to time and date stamp
each datalog entry.

The saved log data and stored location IDs can be viewed, downloaded, and
erased using the LMI Lumic software kit, which includes a USB cable.
Editing of datalogging parameters and RTC via setup mode on the
instrument is disabled.

Setup of the datalogging parameters is also done through the LMI Lumic
software. The advanced user or administrator can set:

 Datalogging Mode
 Real Time Clock (RTC) Values
 Location IDs

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Model 3001 Survey meter User’s Manual Section 5

Datalogging Operation – Mode 1

Datalogging Mode 1 will store the logged data using only the first Location ID
in the Location ID table.

 When the LOG button is pressed, the current radiation reading and

other log data is saved along with the first Location ID in the format
specified in the Specifications at the end of this section.

 In COUNT Mode:

 With a set count time, the LOG button is disabled until completion

of a Scaler count.

 For a continuous Scaler count (Scaler time is 0), the LOG button is

enabled at all times.

 For approximately 2 seconds, the LCD will display the Datalog Table

index for the newly saved log data.

Figure 13: Display showing a Datalog Table index of 12.

 After displaying the Datalog Table index, the instrument will return to

the previous mode of operation.

 The Datalog Table is linear; once the table is full, no further writes will

be allowed until the Datalog Table is erased.

 If an attempt is made to write to a full Datalog Table, a beep will sound

and the maximum Datalog Table index (1.00 k) will be displayed for
about 2 seconds. The instrument will then return to the previous mode
of operation.

Ludlum Measurements, Inc. Page 5-2 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 5

Datalogging Operation – Mode 2

Datalogging Mode 2 will allow the user to choose the Location ID (by Location
ID Table index) to store with the logged data.

 When the LOG button is pressed, the current radiation readings and

other log data are temporarily stored.

 In COUNT Mode: (Datalogging Mode 1 is always utilized in COUNT

Mode.)

o With a set count time, the LOG button is disabled until completion

of a Scaler count.

o For a continuous Scaler count (Scaler time is 0), the LOG button is

enabled at all times.

 The LCD display will show a possible Location ID Table index for the

user. The index will be auto-incremented from the previously used
index.

Figure 14: Display showing a Location ID Table index of 36.

 The ones digit of the index will be blinking, indicating a changeable

value. The user may then enter the preferred Location ID Table index
by tapping the ON/OFF (to select the digit) and MODE (to change
the value) buttons as in Setup mode.

 Once the user has the preferred Location ID Table index entered, tap

the LOG button to save the log data.

 For approximately 2 seconds, the LCD will display the Datalog Table

index for the newly saved log data. (See Figure 13.)

 After displaying the Datalog Table index, the instrument will return to

the previous mode of operation.

 The Datalog Table is linear; once the table is full, no further writes will

be allowed until the Datalog Table is erased.

Ludlum Measurements, Inc. Page 5-3 April 2017

Model 3001 Survey meter User’s Manual Section 5

Datalogging Operation – Mode 3

Data Logging Mode 3 will automatically record data log records using the
current location with the user settable auto log interval (settable to record every
1 to 1800 seconds).

 When the Device is turned on and in RATE or MAX mode, the current

radiation reading and other log data is recorded at the set interval.

 In SCALER Mode:

o Auto log will be paused and will only log at the completion of each

count.

o For a continuous Scaler count (Scaler time is 0), logs will be

recorded at auto log interval.

 The Data Log Table is linear; once the table is full, no further writes will be

allowed until the Data Log Table is erased.

Note:

Tapping the LOG button will start a count and automatically log
the result. Long-pressing the LOG button during the count will
toggle the display between the timer and reading.

Specifications

Handle mounted LOG button

Real Time Clock (RTC)

Internal Storage of up to 250 32-byte Location IDs

Internal Storage of up to 1000 64-byte Datalog records

Datalog format:

 Format Version (1 Byte)
 Month (1 Byte)
 Year (2 Bytes)
 Day (1 Byte)
 Hour (1 Byte)
 Minutes (1 Byte)
 Seconds (1 Byte)
 Logged Value (4 Bytes)
 Range (1 Byte)
 Units (1 Byte)
 Mode (1 Byte)

Ludlum Measurements, Inc. Page 5-4 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 5

 Detector Number (1 Byte)
 Status (1 Byte)
 Reserved (2 Bytes)
 Elapsed Count Time in seconds (4 Bytes)
 Scaler Count Time in seconds (4 Bytes)
 Location ID (32 Bytes)

Ludlum Measurements, Inc. Page 5-5 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 6

Section

6

Software

Connecting to Software

Most Model 3001 instruments are sent with a standard 2-meter cable (A 5-meter
cable can be provided if requested. However, any cable above 2 meters may
have issues with some USB-hubs/computers.)

To connect an instrument to the computer, please connect one end of the USB
cable to the instrument first, then the other end to the computer. Do not
connect both ends to the computer.

Please allow Windows® a moment to install the proper HID drivers for the
instrument before trying to use any software.

Note:

We recommend that you plug the USB cable into the back of your
PC that connects to your motherboard instead of a USB hub.

Note:

Some parameters may only be edited in software, such as the
backlight thresholds, COUNT Display Mode, COUNT Audio
Mode, and Setup prtct.

Ludlum Measurements, Inc. Page 6-1 April 2017

Model 3001 Survey meter User’s Manual Section 6

Extended Features

This section describes features that have been added to the firmware since the
last software release. If the version of your Lumic Calibration Software is higher
than 1.1.0.4, these parameters may have been moved to the Device tab.

Device Count DisplayMode

 0 - timer active only (default selection).
 1 – toggle between timer and the current reading.
 2 - current reading only.

Device Count AudioMode will enable\disable click audio during a COUNT.

 0 – Disabled (Mute icon will always be illuminated in COUNT

mode.)

 1 – Enabled

Device RateResetBtn

 0 disabled
 1 enabled

Device Setup Prtct

 Normal
 Bypass Alarms
 Bypass Alarms Count

Ludlum Measurements, Inc. Page 6-2 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 7

Section

7

Safety Considerations

Environmental Conditions for Normal Use

Indoor or outdoor use (While rain resistant, user is cautioned to avoid
getting water through detector opening.)

No maximum altitude

Temperature range of -20 to 50 °C (-5 to 122 °F) ), may be certified for

operation from -40 to 65 ˚C (-40 to 150 ˚F)

Maximum relative humidity of less than 95% (non-condensing)

Pollution Degree 3 (as defined by IEC 664): (Occurs when conductive
pollution or dry nonconductive pollution becomes conductive due to
condensation. This is typical of industrial or construction sites.)

Not certified for use in an explosive atmosphere

Warning Markings and Symbols

Caution!

The operator or responsible body is cautioned that the
protection provided by the equipment may be impaired if the
equipment is used in a manner not specified by Ludlum
Measurements, Inc.

The Model 3001 Survey meter is marked with the following symbols:

CAUTION (per ISO 3864, No. B.3.1): designates hazardous live voltage

and risk of electric shock. During normal use, internal components are
hazardous live. This instrument must be isolated or disconnected from the
hazardous live voltage before accessing the internal components. This
symbol appears on the side panel. Be sure to take the precautions noted in
the next section whenever necessary.

Ludlum Measurements, Inc. Page 7-1 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 7

The “crossed-out wheelie bin” symbol notifies the consumer that the

product is not to be mixed with unsorted municipal waste when discarding.
Each material must be separated. The symbol is placed on the label located
on the side panel. See section 7, “Recycling,” for further information.

The “CE” mark is used to identify this instrument as being acceptable for
use within the European Union.

Cleaning and Maintenance Precautions

The Model 3001 may be cleaned externally with a damp cloth, using only
water as the wetting agent. Observe the following precautions when
cleaning or performing maintenance on the instrument:

1. Turn the instrument OFF and remove the batteries.

2. Allow the instrument to sit for one minute before cleaning the

exterior or accessing any internal components for maintenance.

Ludlum Measurements, Inc. Page 7-2 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 8

Section

8

Revision History

NOTE: This section of the manual will be updated with each revision of the Model

3001 in order to document changes over time. Ludlum Measurements’ policy is to

provide free software upgrades to instruments for the life of the instrument.

July 2015: New manual.

November 2016: Added description of headphone option. Corrected the

location of the low-battery indicator. Updated the table on page 4-13. Removed
“Units selected as Primary will not be available as Secondary” on page 4-

11.Updated Sigma Audio Note on page 4-14. Added information about rate
reset on page 2-6. Added different options for protect mode to firmware on
page 4-3. Took out references to Triad software and replaced with Lumic.
Added information about the new parameters Backlight Threshold, Device
COUNT DisplayMode, Device COUNT AudioMode, Dead Time Correction

2. Added Section 5 Connection to Software, to most PCs.

Ludlum Measurements, Inc. Page 8-1 April 2017

April 2017: Corrected references of Audio button to Detector button.
Firmware was updated, which affects Section 2 with more screens at turn-on
and changes in what buttons do and how to press/tap them. Updated Audio in
Section 3 Specifications. In Section 4 updated Default Values including adding
P5 values, added a note on page 4-3 before Setup Protect explanation, added
sentence about backlight configuration in note at end of Entering Setup Mode
section on page 4-4, detailed types of presses/taps in setting up pages, changed
values of Dead Time Correction 2 Exponent to -6 to -12, added Dual Level
Audio default at end of Setup page 4, updated Response times in table on page
4-16. Added Section 5 Datalogging. Section 6 updated to Software with
Connecting to Software and Extended Features as sub-sections. Added Section
10 Options. Added Appendix A Typical Values. Added front-panel drawing
498 x 409M in front of manual

Model 3001 Multi-Detector Survey Meter User’s Manual Section 9

Section

9

Recycling

Ludlum Measurements, Inc. supports the recycling of the electronics
products it produces for the purpose of protecting the environment and to
comply with all regional, national, and international agencies that promote
economically and environmentally sustainable recycling systems. To this end,
Ludlum Measurements, Inc. strives to supply the consumer of its goods with
information regarding reuse and recycling of the many different types of
materials used in its products. With many different agencies – public and
private – involved in this pursuit, it becomes evident that a myriad of
methods can be used in the process of recycling. Therefore, Ludlum
Measurements, Inc. does not suggest one particular method over another, but
simply desires to inform its consumers of the range of recyclable materials
present in its products, so that the user will have flexibility in following all
local and federal laws.

The following types of recyclable materials are present in Ludlum
Measurements, Inc. electronics products, and should be recycled separately.
The list is not all-inclusive, nor does it suggest that all materials are present in
each piece of equipment:

Batteries Glass Aluminum and Stainless Steel

Circuit Boards Plastics Liquid Crystal Display (LCD)

Ludlum Measurements, Inc. products that have been placed on the market
after August 13, 2005, have been labeled with a symbol recognized
internationally as the “crossed-out wheelie bin,” which notifies the consumer
that the product is not to be mixed with unsorted municipal waste when
discarding. Each material must be separated. On the Model 3001, the symbol
will be placed on the serial number label located on the side of the
instrument.

The symbol appears as such:

Ludlum Measurements, Inc. Page 9-1 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 10

Section

10

Lumic Calibration Kit (part # 4498-1018): The kit includes calibration software plus the
cable required for calibration. The software allows users to collect data and read, print, and
save device parameters. It allows administrators to adjust device parameters from one device
to another.

Lumic Datalogging Kit (part # 4498-1019): The kit includes datalogging software plus the
required cable. The software allows users to collect data and read, print, and save device
parameters. It allows administrators to adjust device parameters from one device to another.

Model 3000 Series Datalogging Option (part # 4498-479): This option is available to
those who already own a Model 3000 series instrument but chooses to upgrade their existing
instrument to datalogging capability. This option includes firmware plus an instrument
handle incorporating a datalogging button. The handle-mounted LOG button saves the
instrument reading along with a user-selected Location ID, date/time, and other key values.

Headphone Option (part # 4498-555): This provides the Model 3000 series of
instruments with a jack and circuitry required for a standard headphone plug. Ludlum
Measurements also offers mono/stereo headphones with volume control.

Shoulder Strap (part # 4498-868): This adjustable, padded strap comes with a kit to attach
it to a Model 3000 series instrument.

Protective Storage/Transport Case (part # 2312958): This is a medium-sized, foam­padded, rugged case that can be secured with a padlock. It is fitted with a manual pressure
relieve valve for air transport, providing water and dust-proof protection for sensitive
instruments.

Bluetooth 4.0 LE® (
(part # 4498-1024): This feature permits wireless transmission of readings from a connected

instrument, allowing operators to remotely monitor the live data on the screen of their mobile

device. When paired with Ludlum’s Lumic Linker App, the operator can also seamlessly send data

to the *RadResponder Network, which provides a central location for up-to-date information
from operators in the field. Reported data includes user, radiometric survey, survey notes, and
GPS location, as well as details about the instrument and detector being used. (See the Model
3000 Series Bluetooth LE® Addendum for more details on how to use this option.)

Bluetooth

Options

Low Energy, sometimes referred to as

Bluetooth

Smart)

Ludlum Measurements, Inc. Page 10-1 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section 11

Section

11

Standard Parts List

Part Description Part #

Model 3001 Digital Survey Meter 48-4036
Model 3001 Main Board 5498-440
LCD 82 mm x 61.64 mm 7498-417
Unimorph with Harness 8498-542
Model 3001 Bezel Assembly 4498-476
Main Keypad Membrane Switch 7498-425
Battery Holder Modified 7498-458

Optional

Model 3001 Headphone Option 4498-555
Lumic Calibration Software 4498-578
Lumic Datalog Software 4498-775

Ludlum Measurements, Inc. Page 11-1 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section A

Setting

Setup Parameter

Model

133-6

Model

44-2

Alpha or

Beta

Model

133-4

Model
43-132

P1-1

Calibration Constant
Mantissa

122

100

001

600

940

P1-2

Calibration Constant
Exponent

04

08

01

04

8

P1-3

Dead Time Correction 1

36

10 5 80

5

P1-4

Dead Time Correction 2
Mantissa

360

0 (Off)

0 (Off)

TBD

0 (Off)

P1-5

Dead Time Correction 2
Exponent

-12

-12

-12

TBD

-12

P1-6

Efficiency

15

15

Alpha: 20

Beta: 15

15

15

P1-7

High Voltage Setpoint

550

800

800

550

800

P1-8

Discriminator Threshold

35

10

35

35

10

P1-9

Detector Current
Overload Threshold

100 (default)

P1-10

Loss of Count Alarm
Time

999

60

Alpha:600

Beta:60

300

60

P1-11

Detector Enable

En

P2-1

Unit 1 - Units and
Minimum Display

00.0 mR/h

000 µR/h

000 cpm

00.0

mR/h

00.0 µR/h

P2-2

Unit 1 - Units Maximum
Display

999 R/h

50.0

mR/h

999 kcpm

50.0 R/h

2.50

mR/h

P2-3

Unit 1 - RATE/ MAX
Mode Alarm Point

50.0 mR/h

5.00

mR/h

5.00 kcpm

50.0

mR/h

500 µR/h

P2-4

Unit 1 - Count Units
and Minimum Display

000 µR

000 µR

000

counts

000 µR

00.0 µR

P2-5

Unit 1 - Count Units
Alarm Point

000 µR

(disabled)

000 µR

(disabled)

0 counts

(disabled)

000 µR

(disabled)

000 µR

(disabled)

P3-1

Unit 2 - Units and
Minimum Display

000 cpm

000 cpm

oFF

000 cpm

000 cpm

Section

A

Appendix A: Typical Values

Ludlum Measurements, Inc. Page A-1 April 2017

Model 3001 Multi-Detector Survey Meter User’s Manual Section A

Setting

Setup Parameter

Model

133-6

Model

44-2

Alpha or

Beta

Model

133-4

Model
43-132

P3-2

Unit 2 - Units Maximum
Display

999 kcpm

999 kcpm

999 kcpm

999 kcpm

P3-3

Unit 2 - RATE/ MAX
Mode Alarm Point

5.00 kcpm

5.00 kcpm

5.00 kcpm

5.00 kcpm

P3-4

Unit 2 - Count Units
and Minimum Display

000 counts

000

counts

oFF

000

counts

000

counts

P3-5

Unit 2 - Count Units
Alarm Point

0 counts

(disabled)

0 counts

(disabled)

0 counts

(disabled)

0 counts

(disabled)

P4-1

Response Time/

0 (Auto Response)

P4-2

Auto Response Rate

S (slow)

P4-3

Enabled Modes

0 (All Modes)

P4-4

Count Time

60

P4-5

Auto Shutdown Time

0 hours (disabled)

P4-6

Backlight Threshold

LO (Most Sensitive)

P4-7

Sigma Audio Mode

oFF

on

P4-8

Dual Level Audio

oFF

P5-1

Datalogging Mode

1 (Mode 1)

P5-2

Real Time Clock Month

P5-3

Real Time Clock Day

P5-4

Real Time Clock Year

P5-5

Real Time Clock Hour

P5-6

Real Time Clock Minute

P5-7

Real Time Clock Second

Ludlum Measurements, Inc. Page A-2 April 2017