Ludlum Measurements 3078 User manual

Model 3078 Stretch Scope
Ludlum Measurements
May 2021
Serial Number: 25020730 and Succeeding
Firmware: F.3.0.1059 and Higher

Model 3078 Stretch Scope
Ludlum Measurements
May 2021
Serial Number: 25020730 and Succeeding
Firmware: F.3.0.1059 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 7
List of Tables 9
1 Introduction 11
2 Getting Started 13
2.1 Unpacking and Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 Battery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3 Turning the Instrument On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.4 Instrument Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.4.1 Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.4.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.4.3 Calibration Due . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.5 Instrument Operational Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.6 Detector Failure Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.6.1 Detector Loss of Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.6.2 Detector Over Max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.6.3 Detector Over Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.6.4 Detector Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.7 Instrument Use And Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.7.1 ON/AUD Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.7.2 UNITS Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.7.3 DETECTOR Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.7.4 MODE Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.7.5 ACK/RST Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.7.6 LOG Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.7.7 PRG Button: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.8 RATE Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.9 MAX Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.10 COUNT Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.11 DOSE Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3 Specifications 33
4 Setup Mode 37
4.1 Setup Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.2 Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.3 Entering Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.4 Setup Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.5 Model 3078 List of Parameters (in order) . . . . . . . . . . . . . . . . . . . . . . . 43
3

4CONTENTS
4.6 Page 1 - Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.7 Page 2 - Datalogging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.8 Page 3 - Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.9 Page 4 - Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4.10 Page 5 - Channel 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.11 Page 6 - Unit 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.12 Page 7 - Unit 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4.13 Page 8 - Reset (WARNING!!!) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5 Datalogging 67
5.1 Datalogging Operation – Mode 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.2 Datalogging Operation – Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.3 Datalogging Operation – Mode 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.4 Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6 Software 71
6.1 Connecting to Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7 Advanced Features 73
7.1 Dead Time Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7.2 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7.3 R to Sv Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.4 Software Calibration Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.5 Instrument Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.6 Other Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.7 Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.8 Real-time Streaming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
8 Safety Considerations 77
8.1 Environmental Conditions for Normal Use . . . . . . . . . . . . . . . . . . . . . 77
8.2 Warning Markings and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
8.3 Cleaning and Maintenance Precautions . . . . . . . . . . . . . . . . . . . . . . . 78
9 Revision History 79
10 Recycling 81
11 Options 83
A Auxiliary Communications 85
A.1 AuxComm Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
A.2 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
A.3 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
A.3.1 AuxComm Usage - Hot Key . . . . . . . . . . . . . . . . . . . . . . . . . . 85
A.3.2 AuxComm Usage - Pairing . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
A.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
A.4.1 AuxComm Setting - Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
A.4.2 AuxComm Setting - Off Time . . . . . . . . . . . . . . . . . . . . . . . . . 89
Ludlum Measurements, Inc.

CONTENTS 5
A.4.3 AuxComm Setting - Pwr Mode . . . . . . . . . . . . . . . . . . . . . . . . 89
A.4.4 AuxComm Setting - Write Protect . . . . . . . . . . . . . . . . . . . . . . 89
A.4.5 AuxComm Setting - Encryption . . . . . . . . . . . . . . . . . . . . . . . . 90
A.4.6 AuxComm Setting - Auto Mode Interval . . . . . . . . . . . . . . . . . . . 90
May 2021

LIST OF FIGURES
2.1 Startup Display (All Segments Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2 Hardware Revision Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 Firmware Version Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.4 Battery Voltage Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5 Startup Display Showing 189 Stored Data Records . . . . . . . . . . . . . . . . . . . 16
2.6 Instrument Date Reset (Audio Alarm) . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7 Definitions Reset (Audio Alarm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.8 Calibration Due (Audio Alarm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.9 Detector Loss of Count Display (Display Will Flash) . . . . . . . . . . . . . . . . . . 19
2.10 Detector Over Max (Display Will Flash) . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.11 Detector Over Range (Display Will Flash) . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.12 Detector Overload Alarm (Display Will Flash) . . . . . . . . . . . . . . . . . . . . . . 20
2.13 WiFi Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.14 RATE Mode Displaying Background Radiation Rate . . . . . . . . . . . . . . . . . . 26
2.15 MAX Mode Display With ALARM Indication . . . . . . . . . . . . . . . . . . . . . . . 27
2.16 COUNT Mode Displaying COUNT Timer of 5 Minutes, 30 Seconds . . . . . . . . . 30
2.17 COUNT Mode Displaying COUNT Timer of 100k Seconds . . . . . . . . . . . . . . . 30
2.18 DOSE Mode Operation Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.1 Backlight/Setup Protect Dipswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.2 Setup Page Selection Display (showing page 4-CAL) . . . . . . . . . . . . . . . . . . 42
4.3 Detector Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.1 Displaying Datalog Table Index of 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.2 Displaying Datalog Location ID Table Index of 36 . . . . . . . . . . . . . . . . . . . . 69
A.1 Example – Device Selection In Lumic Linker App (iOS) . . . . . . . . . . . . . . . . 87
A.2 Example – Pairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
A.3 Example – Model 3000 series Found in Lumic Linker App (iOS) . . . . . . . . . . . . 87
A.4 Example – Entering PIN In Lumic Linker App (iOS) . . . . . . . . . . . . . . . . . . . 87
A.5 Example – Lumic 2.0 Calibration Software . . . . . . . . . . . . . . . . . . . . . . . . 88
7

LIST OF TABLES
2.1 COUNT Mode Units and Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.1 Features That Affect Units in All Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 74
A.1 AuxComm Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
A.2 AuxComm Auto Off Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
A.3 AuxComm Power on at Boot-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
A.4 AuxComm Write Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
A.5 AuxComm Encription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
A.6 AuxComm Auto Mode Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
9

CHAPTER
1
INTRODUCTION
The Model 3078 and Model 3078i are ergonomic, lightweight instruments which can be used
for gamma radiation survey while the user remains at a distance from the potentially high
fields of radioactivity. The Model 3078i version has all the features of the Model 3078 plus the
addition of an internal detector for tracking user exposure rate or dose, but both instruments
will hereafter be referred to as “Model 3078."
The Model 3078 features an external probe on a telescoping pole that contains two GM de-
tectors for low range and for high range. These ranges may be controlled manually, or the
instrument may be configured with the capability of auto-ranging between low and high ra-
dioactivity fields. The Model 3078 features the ability to measure radiation in count rate,
exposure rate/dose, activity rate, integrated exposure/dose, time-averaged rates, and scaler
counts.
The instrument features a large backlit LCD (liquid crystal display), an 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, er-
gonomic grip but may be removed for ease of decontamination.
Four modes of operation are available for the Model 3078 – RATE, MAX, COUNT, and DOSE.
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, 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, cps), a time-averaged exposure or dose (R/h, Sv/h), or an
integrated exposure or dose (R or Sv).
DOSE mode allows the user to view a real time integrated dose (R or Sv) with the possibility
of continually monitoring the integrated dose during other modes of operation.
11

12 CHAPTER 1. INTRODUCTION
The primary keypad includes four push buttons: ON/AUD to toggle instrument power and
adjust the click audio level, UNITS to change between available units, DETECTOR to change
between available detectors, and MODE to switch between available modes.
The standard handle includes three pushbuttons: the LOG button that allows the instrument
to log up to 1000 data points when activated with the optional Lumic Datalogging Kit, an
ACK/reset button for acknowledging alarms and resetting readings, and a PRG button for
entering setup mode and activating additional features.
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, COUNT, and DOSE modes can be silent or utilize a “click” audio; the “click” au-
dio 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 for the user to find small increases above the background radia-
tion 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 watch-
ing 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 3078 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 3078 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 75 hours under normal usage. A low-battery indicator on
the LCD warns when less than 16 hours of battery life remain.
The Model 3078 may optionally be provided with a 1/8-inch stereo headphone jack that
would allow for headphone use for audio output.
The Model 3078 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 de-
vices 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 3078 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 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.
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. Press the silver latch on the bottom left side of the instrument case and gently slide
the instrument towards the detector and away from the handle base.
3. Turn the instrument over so that the bottom of the instrument is facing up.
4. Use a straight, medium-sized screwdriver to turn the single screw on the battery
cover one-quarter turn counter-clockwise.
13

14 CHAPTER 2. GETTING STARTED
5. Release and remove the battery cover.
6. Replace all four AA batteries.
7. Replace the cover and turn screw one quarter of a turn clockwise to secure.
8. Place the meter back on the mounting plate and gently slide the instrument away
from the detector and towards the handle base until the latch engages.
2.3 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 current revision level of each board installed in the system:
main board, internal detector high-voltage board, and auxiliary communications board.
Figure 2.2: Hardware Revision Levels
A revision level of 0 indicates that the board is not installed or detected.
Ludlum Measurements, Inc.

2.3. TURNING THE INSTRUMENT ON 15
Next, the instrument displays the firmware version.
Figure 2.3: Firmware Version Display
The first character defines the firmware type, the second character defines the major version
level, and the third character defines the revision level. The build version is not displayed.
The instrument then displays the battery voltage. The low-battery indicator is only displayed
to indicate that the value displayed is related to the battery voltage and not that the battery
voltage is low.
Should the instrument detect a battery voltage that is high enough to power on, but too low
to safely operate, the display will go blank and the low-battery icon will flash. Normal opera-
tion 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.
Figure 2.4: Battery Voltage Display
The instrument then displays the number of stored records if datalogging is enabled.
May 2021

16 CHAPTER 2. GETTING STARTED
Figure 2.5: Startup Display Showing 189 Stored Data Records
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 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 12 seconds plus an-
other 8 seconds if Sigma Audio is enabled.
2.4 Instrument Diagnostics
After the boot process is complete, the instrument will perform some simple diagnostic
checks.
2.4.1 Date
If the instrument displays the instrument date reset message, this indicates that the real time
clock, which maintains the date and time in the instrument, has been reset. This is a com-
mon occurrence after installing new batteries into the instrument after an extended period
without batteries (typically greater than 15 minutes).
Figure 2.6: Instrument Date Reset (Audio Alarm)
To acknowledge this condition, a short press of the ACK/RST button will silence the alarm,
clear the screen, and resume normal instrument operation. A ’FAULT’ message will remain
on the screen as a reminder until the instrument power is cycled.
Ludlum Measurements, Inc.