LUDLUM 3030E-2 User manual

LUDLUM MODEL 3030 & 3030E SERIES
ALPHA-BETA SAMPLE COUNTER
November 2017
Serial Number 185762 and Succeeding
Serial Numbers

LUDLUM MODEL 3030 & 3030E SERIES
ALPHA-BETA SAMPLE COUNTER
November 2017
Serial Number 185762 and Succeeding
Serial Numbers
LUDLUM MEASUREMENTS,INC.
501 OAK STREET, P.O. BOX 810
SWEETWATER, TEXAS 79556
325-235-5494, FAX:[phone]

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]

Table of Contents
INTRODUCTION.............................................................................................................1
GETTING STARTED ......................................................................................................3
Unpacking and Repacking..........................................................................................................................................3
Software Installation ...................................................................................................................................................4
External Counter HV Connector (3030E only).........................................................................................................4
Start-up.........................................................................................................................................................................4
SPECIFICATIONS..........................................................................................................6
Model 3030 ONLY..............................................................................................................................................6
Model 3030E ONLY............................................................................................................................................6
Common Specifications .......................................................................................................................................7
DESCRIPTION OF CONTROLS AND FUNCTIONS......................................................8
Front Panel...................................................................................................................................................................8
Back Panel....................................................................................................................................................................9
Internal Controls .......................................................................................................................................................10
SAFETY CONSIDERATIONS.......................................................................................11
Environmental Conditions for Normal Use.............................................................................................................11
Cleaning Instructions and Precautions....................................................................................................................11
Warning Markings and Symbols .............................................................................................................................12
Replacement of Main Fuse (Back Panel).................................................................................................................13
CALIBRATION AND MAINTENANCE .........................................................................14
Calibration .................................................................................................................................................................14
Recommended Sources ............................................................................................................................................14
Calibration Procedure...............................................................................................................................................14
Maintenance...............................................................................................................................................................18
COMPUTER SOFTWARE ............................................................................................20
Parameters .................................................................................................................................................................22

QC Check...................................................................................................................................................................25
HV Plateau .................................................................................................................................................................29
MDA Calculations .....................................................................................................................................................32
Data Logging..............................................................................................................................................................33
RS-232 Communication ............................................................................................................................................34
COMMANDS.............................................................................................................................................................34
Bn –Background Subtract Status.............................................................................................................................34
Cn –Count ...............................................................................................................................................................35
Dn –Display Mode ..................................................................................................................................................35
F –Firmware............................................................................................................................................................35
Ln –Logging Mode..................................................................................................................................................35
Pn..............................................................................................................................................................................35
Qx.............................................................................................................................................................................35
RA –Read Next Sample Number.............................................................................................................................36
RBn –Read Background Subtract............................................................................................................................36
RC –Read Calibration Due Date .............................................................................................................................36
RD –Read Current Date and Time ..........................................................................................................................36
REn –Read Efficiency.............................................................................................................................................36
RHn –Read Header..................................................................................................................................................36
RL –Read Loss of Count Timer ..............................................................................................................................36
RNn –Read MDA....................................................................................................................................................36
RP –Read the PC Time............................................................................................................................................37
RQn ..........................................................................................................................................................................37
RR –Read Count......................................................................................................................................................37
RS –Read Samples ..................................................................................................................................................38
RT –Read Current Count Time ...............................................................................................................................38
RU –Read Comment ...............................................................................................................................................38
RV –Read High Voltage..........................................................................................................................................38
RXn –Read the Crosstalk ........................................................................................................................................38
RY –Read Recycle Mode Status .............................................................................................................................38
Rn –Read the Alarm Set Points...............................................................................................................................38
Xn –Set Crosstalk Mode..........................................................................................................................................39
SBnxxxxxx –Set Background Subtract ...................................................................................................................39
SCmmddyyyy –Set Calibration Date ......................................................................................................................39
SDmmddyyyyz –Set Date .......................................................................................................................................39
SEnxxx –Set Efficiency...........................................................................................................................................39
SHnxxxxxxxxxxxxxxx –Set Header .......................................................................................................................39
SLyyyyy.y –Set Loss of Count Timer.....................................................................................................................39
SNnyyyyyy –Set MDA............................................................................................................................................39
SPxxxxx.x ................................................................................................................................................................40
SQnn –Set QC parameters.......................................................................................................................................40
SR –Reset All Samples............................................................................................................................................40
SThhmm –Set Time.................................................................................................................................................40
SUxxxxxxxxxx –Set Command ..............................................................................................................................40
SVxxxx –Set High Voltage .....................................................................................................................................40
SXnyyy –Set Crosstalk............................................................................................................................................41
SYn –Set Recycle Mode..........................................................................................................................................41
Snxxxxxx –Set Alarm .............................................................................................................................................41

Sample Printouts........................................................................................................................................................41
Software License Agreement ....................................................................................................................................43
RECYCLING.................................................................................................................46
PARTS LIST .................................................................................................................47
Model 3030 & Model 3030E Alpha-Beta Sample Counters..............................................................................47
Amplifier / Processor Board, Drawing 337 × 189..............................................................................................47
Display Board, Drawing 337 × 88 .....................................................................................................................50
Power Supply Board, Drawing 337 × 133 .........................................................................................................51
Wiring Diagram, Drawing 337 × 182 ................................................................................................................51
Model 3030 ONLY............................................................................................................................................52
DRAWINGS AND DIAGRAMS.....................................................................................53
MODEL 3030-2........................................................................................................... A-1

Model3030&3030ESeries TechnicalManual Section1
Ludlum Measurements, Inc. Page 1 November 2017
Introduction
he Model 3030 and 3030E are dual-channel counters designed for
simultaneous alpha and beta sample measurement. The Model 3030
has a built-in scintillation detector with a shielded chamber and
chrome-plated brass sample tray that can accept a maximum sample
size of 5.1 cm (2 in.) in diameter. The Model 3030E utilizes an external, side
mounted sample counter. Common external counters are: the alpha-only,
Model 43-10, or the alpha-beta, Model 43-10-1. Throughout this manual, the
term “3030” will be used to refer to both instruments unless otherwise
noted.
The Model 3030 is powered by main supply of 95-250 Vac. The instrument
features a built-in detector, high-voltage power supply, adjustable count time
periods, and a click-per-event audio with adjustable volume. A pulse height
analyzer is employed to provide information to the two independent
counters. The Model 3030 also features an internal trickle-charged gel-cell
battery for providing up to eight hours of use without mains supply. The
two independent LCDs (liquid crystal displays) feature six 1.3 cm (0.5 in.) tall
digits, which are backlit for improved visibility.
The instrument may be operated as a traditional scaler (counts per count
time) with a manually adjustable high voltage, or may be enabled to operate
with advanced features. The 9-pin RS-232 connector on the back of the
instrument allows attachment to a computer or printer. Software is provided
to allow the setup of several advanced features.
The counts per minute (CPM) or disintegrations per minute (DPM) modes
may be enabled to allow the count to be converted (automatically, in real
time) to cpm or dpm. The background radiation count may be subtracted
automatically in either mode. Crosstalk correction, alpha or beta alarms, and
time/date may also be set. Parameters are stored in non-volatile memory.
Time and date are maintained with an internal lithium battery.
Another advanced feature, which may be enabled or disabled, is the QC
(Quality Control) check function. When enabled, the user must perform
Section
1
T

Model3030&3030ESeries TechnicalManual Section1
Ludlum Measurements, Inc. Page 2 November 2017
measurements on known sources (and background) and receive acceptable
numbers in order for the instrument to be used that day. Twenty-four hours
later, the QC LED (light emitting diode) is turned on, indicating the need for
another QC check. This feature ensures that the instrument is tested daily
and that measurements are valid.
The Model 3030-2 is a variant of the Model 3030 that allows the count to be
displayed in units of Bq or CPS (counts per second). In order to do this, the
status light for overload (OL) is changed to a green indicator, and the
overload condition is instead displayed as "OL" on both LCD displays. The
final change is that, when placed into Bq or CPS units, the alpha and beta
LCD displays are changed to having a second decimal point, ie. in the
format xxxx.xx to allow for lower-level measurements. The Model 3030-2
does have a distinctly different front panel that has the model number
"3030-2" prominently displayed. A detailed summary of these changes are
found in Appendix A, starting with page A-1.
The Model 3030E-2 is like the Model 3030-2, but with an external detector
like the Model 3030E.

Model3030&3030ESeries TechnicalManual Section2
Ludlum Measurements, Inc. Page 3 November 2017
Getting Started
Unpacking and Repacking
Caution
The Model 3030 Alpha-Beta Scaler weighs approximately 13.2
kg (29 lb). Take necessary precautions when lifting the
instrument to prevent personal injury or strain.
Remove the calibration certificate and place it in a secure location. Remove
the instrument and accessories (batteries, cable, etc.) 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. The Model
3030/3030E serial number is located on the back panel, lower left-hand
corner. Most Ludlum Measurements, Inc. detectors have a label on the base
or body of the detector for model and serial number identification.
Important!
If multiple shipments are received, ensure that the detectors
and instruments are not interchanged (particularly in the case
of the Model 3030E). Each instrument is calibrated to a
specific detector(s), and is therefore not interchangeable.
To return an instrument for repair or calibration, provide sufficient packing
material to prevent damage during shipment. Also provide appropriate
warning labels to ensure careful handling.
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.
Section
2

Model3030&3030ESeries TechnicalManual Section2
Ludlum Measurements, Inc. Page 4 November 2017
SoftwareInstallation
Interface software supplied with the instrument will need to be installed if
access to advanced features is desired. User must comply with the software
license agreement found in Section 7 of this manual.
Install the Model 3030 interface software before making any connections
between the instrument and a computer.
Note:
Uninstall any previous version of the Model 3030 interface
software prior to installing this version.
Place the CD in the computer CD drive. The software will automatically
install. If desired, double-click “setup.exe” to manually install the software.
After the automatic installation program begins, follow the prompts. Take
note of the directory to which the executable file is saved. After completion
of the installation, the program may be accessed through the directory in
which it was saved.
External Counter HV Connector (3030E only)
Caution!
The external counter operating voltage (HV) is supplied to the
counter via the counter input connector. A mild electric shock
may occur if bodily contact is made with the center pin of the
input connector. Switch to OFF before connecting or dis-
connecting the cable or counter.
Connect one end of a counter cable to the counter by firmly pushing the
connectors together while twisting clockwise a quarter of a turn. Repeat the
process in the same manner with the other end of the cable and the
instrument.
Start-up
Before using the instrument for the very first time, determine whether or not
a computer interface is desired. If the computer interface is desired, revert to
the previous subsection, “Software Installation,” before continuing, and then
connect the instrument to the computer using the RS-232 cable provided.

Model3030&3030ESeries TechnicalManual Section2
Ludlum Measurements, Inc. Page 5 November 2017
Connect the instrument to mains power using the power cable provided and
then turn the instrument on “|” using the front panel power switch (lower
left corner).
Upon power-up, the LCD displays become backlit, front panel indicators
(LEDs) illuminate, and the alpha display shows all eights (888888). Then the
firmware version is displayed. Parameters will display before initialization
completes if the “Show Parameters during power-up” box is checked in
“General Settings” within the interface program. After initialization is
complete, both displays are blanked, and all front-panel indicators (LEDs)
are turned off.
If using the computer interface, start the interface program from the
appropriate directory and set the desired operating parameters described in
detail in Section 6 of this manual
Perform a QC check by following the directions imprinted on the
instrument front panel if available, ensuring the tray latch switch (Model
3030) is placed in the TRAY UNLATCHED position before attempting to pull
out the tray. Once the tray is slid out, place the check source in the center,
slide the tray back in place, and place the tray latch switch in the TRAY
LATCHED position. See Section 6 of this manual for further details on “QC
Check.”
The COUNT TIME MINUTES switch should be set based on the count rates
being observed and the desired statistical accuracy. Set the VOLUME control
to the desired level of audio.
Proceed to use the instrument. For further information on instrument
controls or functions, consult Sections 4 and 7 of this manual.

Model3030&3030ESeries TechnicalManual Section3
Ludlum Measurements, Inc. Page 6 November 2017
Specifications
Detector: ZnS(Ag) adhered to a plastic scintillation material
Tube: 5.1 cm (2 in.) diameter, magnetically shielded photomultiplier
Window: 0.4 mg/cm2aluminized Mylar
Active and Open Area: 20.3 cm2
Sample Holder: brass housing with chrome-plated brass sample tray,
capable of holding 2.5 or 5.1-centimeter (one or two-inch) diameter samples,
up to 1 cm (0.4 in.) thick
Shielding Thickness: 19 mm (0.75 in.)
Efficiency (4πgeometry):
Alpha: 32% for 230Th; 39% for 238U; 37% for 239Pu
Beta: 8% for 14C; 27% for 99Tc; 29% for 137Cs; 26% for 90Sr/90Y
Background:
Alpha: 3 cpm or less
Beta Gamma: 50 cpm or less (10 µR/hr field)
Size: 29.2 x 19.1 x 26.7 cm (11.5 x 7.5 x 10.5 in.) (H x W x D)
Weight: 13.2 kg (29 lb)
Finish: gray powder coating with subsurface-printed membrane front panel
Counter Connector: series “C” for connection to an external counter
Size: 24.1 x 13.5 x 25.4 cm (9.5 x 5.3 x 10.0 in) (H x W x D)
Section
3
Model 3030 ONLY
Model 3030E ONLY

Model3030&3030ESeries TechnicalManual Section3
Ludlum Measurements, Inc. Page 7 November 2017
Weight: 2.7 kg (6 lb)
Finish: beige powder coating with subsurface-printed membrane front panel
Input Sensitivity: Beta-gamma lower threshold is adjustable from 2 mV to
10 mV. Beta-gamma upper threshold is adjustable from 25 mV to 100 mV.
Alpha threshold is adjustable from 150 mV to 500 mV. Normally the beta
channel is set for input pulses from 4 mV to 50 mV, and the alpha channel
is set for input pulses above 120 mV.
Beta Threshold: -4 mV
Alpha Threshold: -120 mV
Beta Window: 50 mV
High Voltage (HV): manually or digitally adjustable from 200 to 2500 Vdc
with the capability of supporting 60-megohm scintillation loads to 1500 volts
Audio: dual tone (one for each channel), “click-per-event” type with volume
control
Data Output: 9-pin RS-232 port
Status Indicators: backlit indicators for QC-daily QC check needed; OL-
scintillation detector is in overload condition; CPM/DPM- counting in CPM or
DPM mode; αAL/βAL-count has exceeded the alarm set point
Count Time: Select 0.1, 0.5, 1, 2, 5, 10, 60 minutes or the user-defined PC
setting, which is defined during setup using the RS-232 port. User-defined
count time may be set from 0.1 to 546.1 minutes.
Scalers: two each (one per channel), six-digit LCD displays with backlights
providing a range of 0-999999 counts (started by the COUNT button)
Scaler Linearity: reading within 2% of true value
Count Timer: adjustable from 0.1 to 30 minutes (PC setting is user-defined
via PC software)
Power: 250 watts at 95-250 Vac, 50-60 Hz single phase; internal 12 Vdc,
1.2A/hr, trickle-charged battery provides power for eight hours
Common
Specifications

Model3030&3030ESeries TechnicalManual Section4
Ludlum Measurements, Inc. Page 8 November 2017
Description of Controls and
Functions
Front Panel
ON/OFF: a rocker switch used to apply power to the instrument when in the
ON position
COUNT Button: resets and starts the counting cycle, also resets the two
counters when depressed
QC CHECK Button: starts the QC (Quality Control) Check cycle, also resets
the two counters when depressed. Pressing this button during a QC Check
will restart the process. Press the COUNT Button to advance to the next
step.
COUNT TIME (MINUTES): a rotary switch, allowing selection of count times
of 0.1, 0.5, 1, 2, 5, 10, 60 or a PC position that selects the user-defined count
time
VOLUME: a rotary control used to vary the audio output from off to full
volume
Tray: a slide-out tray is used to hold the sample during a count cycle. The
tray will hold samples, which are up to 1 centimeter (0.4 inches) thick by
either 2.5 or 5.1 centimeters (one or two inches) in diameter. The tray insert
is held in place by a set screw (left side) and is reversible (by loosening the set
screw) for selection of sample diameter.
Tray Switch (Model 3030 only) (Marked TRAY LATCHED and TRAY
UNLATCHED): a 90°rotary control used to lift the sample tray into position
and block all extraneous light from the detector. Tray switch should always
be in the LATCHED position while counting.
Section
4