Nucleonix PCM 738A User manual

I N S T R U C T I O N
M A N U A L
PALM CONTAMINATION MONITOR (ALPHA)
TYPE : PCM 738A
NUCLEONIX SYSTEMS PRIVATELIMITED
Plot No: 162 A & B, Phase II, I.D.A. Cherlapally, Hyderabad - 500 051.
Phone: [phone] / 84 / 85, Mobile No: 7331104481 / 82
E-mail: [email protected] Web : www.nucleonix.com
FILE NAME : NSPL/DOC / MAN / PCM 738A/ 02
VER_20150615

Contents
Page No.
3-4
5-6
7-7
8-9
10-13
14-18
S.No.
CHAPTER I
CHAPTER II
CHAPTER III
CHAPTER IV
CHAPTER V
CHAPTER VI
CHAPTER VII
CHAPTER VIII
Description
Introduction
Front panel and Side panel controls /
indications / diagrams
Specifications
Block diagram & Description
Operating Instructions
Circuit Diagrams
Maintenance and Warranty clause
Contact Us for Availing Services
19-19
20-23

CHAPTER- I
INTRODUCTION
Palm Contamination Monitor PCM 738A manufactured by NUCLEONIX SYSTEMS primarily
serves as a personnel monitoring system for checking the Alpha contamination of Palm of
radiation workers / technicians working in Nuclear Power Plants, reactors,
Radiochemical plants and other similar installations. This is wall mounted design.
Start of counting is initiated by an IR source detector arrangement on detection of palm. It can
also be used as a frisker for checking clothing etc after disconnecting IR sensor connector
Guidance to the user during monitoring is in the form of textual messages during monitoring & at
the end of monitoring.
FEATURES :
*Micro-controller based design.
*Efficiency > 25% for Am-241.
*Uses Zns scintillator coupled to 2Pi PMT of suitable dia.
*Provided with a rugged protective grill.
*20X4 LCD display for showing up configuration screens.
*Visual and audio alarms in the event of alarm condition.
*User interface is through a detachable keypad.
*Monitor design ensures continuous maintenance free operation in harsh atmospheric
conditions in Radiochemical plants.
Page 1 of 22

Fig. : Arrangement of Palm Contamination Monitor
Page 2 of 22

CHAPTER - II
FRONT PANEL & SIDE PANEL CONTROLS & INDICATORS
2.1 FRONT PANEL
2.1.1 LCD DISPLAY
This is a 20 X 4 LCD dotmatrix display which shows preset counts, elapsed time and other
status information during acquisition and it also shows various parameters during configuration
2.1.2 STATUS MESSAGES
All status messages are shown 20X4 LCD display during monitoring configuration
The below LEDs are lit when corresponding status is set.10x10mm RED LED is
provided for indication of contamination status after acquisistion.
2.1.3 BUZZER
Audio output is generated by this buzzer in the event alarms are exceeded.
2.2 SIDE PANEL
2.2.1 MAINS ON SWITCH
A toggle switch provided on side panel of display unit & is used to switch DC supply ON/
OFF to the instrument.
2.2.2 DETACHABLE KEYPAD
The detachable keypad provided connects to the unit. This keypad facilitates user to
select suitable program option and configure the instrument
2.2.3 KEYS
A 2x2 matrix detachable keypad has been provided for configuring the instrument.
Keypad details :
a)Fn : Fn key facilitates the user to select the menu options for configuration
like preset time, preset counts, etc.
b)/: These keys facilitates user to edit the selected menu options Keypad
commands have been explained in detail in chapter IV
c)/: start /stop button facilitates the user to aquire in clothing mode by
bypassing the optical sensor.
Page 3 of 22

2.2.4 ADAPTOR JACK PIN
This connector is used to provide charging voltage to the instrument.
2.2.5 USB COMM. PIN
This is used for USB communication through PC
Page 4 of 22

CHAPTER - III
SPECIFICATIONS
Detector : Plastic Scintillator of dimensions 140x220mm covered with
Aluminized mylar film and coupled to suitable PMT serves
as the Alpha detector. It is also provided with a rugged SS
grill for protection to the detection assembly.
Palm Detection : By an IR sensor
Efficiency : Overall efficiency is better than 25% for Am - 241
Display : 20 X 4 dot matrix LCD display for configuration & display
of counts respectively.
Aquisition Modes : Palm / Clothing Modes
Preset time : 1 - 99 secs.
Measuring Range : 0 - 9999 counts / 0-9999 CPS / 0-99999 CPM
Preset counts range : 1 - 9999 counts
User Interface : A 2 X 2 matrix detachable keypad has been provided for
configuring the instrument.
LED
Indication : Contamination.
Audio : Warning audio signals for contaminated and incomplete
operation.
Data storage & transfer : Data storage facility for last 1000 readings is provided.
Each reading is stored along with time stamp. This data
can be transferred through the USB port to PC using data
communication software.
Power Supply : 7.4V Li-ion batteries pack along with AC Charger
Page 5 of 22

CHAPTER - IV
BLOCK DIAGRAM & DESCRIPTION
Palm Contamination Monitor Type PCM738A is designed for operation as a wall mounted
palm monitor and as a hand-held frisker once removed from the wall mount holder.
This is Li-ion battery operated device which is normally connected to AC mains for charging
through charger for frisking in hand-held mode, disconnect banana plug connected to the unit for
battery mode operation.
Palm monitor comprises of the following sub-assemblies
a) Main detector display unit
b) AC charger for 7.4V Li-ion battery
c) Wall mounting arrangement for palm monitor
The block diagram of the palm monitor is illustrated below
AT89V
51RD2
2X2 Keypad
Buzzer
Alarm
LED
20 X 4
LCD display
High Voltage
2 pi
PMT
-ve Tail to TTL
connector
BCD
Counter
ADC
>
<
Optical
Sensor
<
>
>
UART to USB
>
SS
PC
>
USB
>
>
>
+12V
Zns (As)
Scint Detector
>
RTC ><
<
E
2
ROM ><
HV
ref
7.4 Li-ion
AC charger
SS
7.4 Li-ion
Batteries LDO >
+5V
>
Switching
Regulator >
+12V
Page 6 of 22

As the block diagram indicates, Li-ion batteries / AC charger provides the DC voltage to the
electronic unit.
The regulated voltageof +12V are generated by switching regulator and regulated voltages of
+5V is generated by LDO MAX883.
Positive high voltage used for powered by +12V supplies. The high voltage for the PMT is set
at+750 to 800V DC. The Alpha detector ZnS(As) when exposed to alpha particles light
scintillations are provided.
This signal is detected and a -ve tail pulse is produced by the PMT. This signal is amplified by
the hybrid -ve Tail to TTL circuit. The TTL pulse thus produced is fed to display board for
counting and further analysis.
The display board essentially compreses of 20X4 LCD, micro-controller and other
peripherals like BCD counter, RTC, E
2
PROM, UART to USB connector, keypad etc.
The counts recieved from the Tail to TTL connector are fed to the 6 digit BCD conter. The
counts are readout by the micro-controller periodically for counts / count-rate calculations
and display on 20X4 LCD display also reads / sets micro-controller RTC device and displays
on LCD current time and date. The instrument settings area configured through 2X2 front
panel keypad and stored in the E
2
PROM.
Acquisition for palm is initiated on optical sensor transition and goes on uninterrupted until
there is transition in optical sensor status.
At the end of acquisition, result is diplayed on LCD and depending on alarm status, audio
alarms are generated for contamination event.
Acquisition data is stored in the E
2
PROM and it can be transferred to PC through USB port.
Page 7 of 22

CHAPTER - V
OPERATING INSTRUCTIONS
Instructions on operation of intrument
Palm Monitor Type PCM 738A manufactured by Nucleonix is a multi-function contamination
monitoring device. in wall mounted configuration, it works as a Alpha Palm Monitor. When
the palm monitor is detached from its wall mount frame, it can be used as a frisker.
4.1 Use of the instrument as Palm Monitor:
* Mount the instrument in its wall mount frame
* Connect the banana plug to the palm monitor
* Now instrument is ready for use as Palm Monitor
After power ON, the instrument updates background counts as shown below.
E TIME : XXXX BG
COUNTS: XXXXXX
Once acquisition is completed below screen appears
READY....
4.1.1 Configuration before use:
Now press Fn key, password screen appears. Now enter 9090 using  &keys.
Use key to increment digit and key to scroll left.
4.1.2 Settings of RTC
Now press Fn key till below screen appears
RTC
XX : XX XX / XX
Use key to increment digit and key to scroll left & set the desired time / date.
Page 8 of 22

4.1.3 Background(BG) Update Time:
Based on the background (BG) update time, background will be refreshed .
To set press Fn key till below screen appears
BG UPDATE
TIME MIN : XX
Now using  &keys, select the desired update time.
4.1.4 High Background (BG) CPM:
Based on the value set, high background message will be shown during background
acquisition. In case background exceeds high background, acquisition will be halted
completely until restart
To set press Fn key till below screen appears
HIGH BG
CPM XXXX
Now using  &keys, select the desired update time.
4.1.5 Background (BG) SUBTRACT:
Background(BG) subtraction of the instrument can be kept ON/OFF as needed.
To set, press Fn key till below screen appears
BG SUBTRACT
XXXX
Now using  &keys, select the subtraction mode as necessary.
4.1.6 Preset Level Selection:
Preset level for triggering alarms can be set by selecting below option
To set press Fn key till below screen appears
PRE LEV
CNT XXXX
Now using  &keys, select the preset alarm set point.
Page 9 of 22

4.1.7 Preset Time Selection:
Preset time for counting for palm can be selected using the menu option
PRE TIME
(SECS) XXXX
Now using  &keys, select the preset time in seconds.
4.1.8 Acquisition Unit Selection for Clothing Mode:
Palm monitor can be usedas a frisker by removing the palm monitor form its holder
(disconnect power, cables to the unit). Now select below menu option
CL CNT
MODE
Now using  &keys, select clothing acquisition mode as preset time or CPS or
CPM mode.
4.1.9 To Save Settings:
To save settings configured/modified, select below menu option
SAVE ?
Now press  or keys to store the settings changed in E
2
PROM.
4.1.10 Acquisition Mode:
To acquire for palm, place the palm so that IR sensor on the wall mounted frame is
obstructed. This triggers the acquisition to start for a duration of preset time.
Screen as shown below appears during acquisition.
ETIME : XXXX
COUNTS : XXXXXX
Upon completion of acqusition, one of the below screen appears
YOU ARE CLEAN........
If alarm set point is not exceeded. This is accompanied by a long single tone
Page 10 of 22

or
CONTAMINATION.........
If alarm set point is exceeded. This is accompanied by two tone audio alert & flashing
RED LED indication.
4.2 Use of the instrument as Hand-Held Frisker / Contamination Monitor:
Remove palm monitor from its wall mounting frame after disconnecting its connector.
Now to use instrument as frisker, refer to configuration, to start acquisition press
START / STOP button.
YOU ARE CLEAN......
CPS/CPM XXXXX
Above screen will appear if CPS/CPM modes are selected.
Acquisition will be continuous until STRT/STOP button is pressed.
4.3. General Instructions
1. The Palm Contamination Monitor is a compact and easy to handle unit housed in a light
tight assembly and provided with a wall mounting arrangement.
2. Before switching ON please read the operating instructions as in Chapter IV Section 4.1
completely.
3. The unit is packed and dispatched to site in reading to use condition.
4. Now switch ON the Toggle switch to operate the unit.
5. After Power-up the monitor will acquire for the background CPM and come to ready
mode after 60 secs
6. User can monitor himself by placing his palm on the grill area. Instrument will count
for preset time and at the end of counting shows the alarm status.
7. In case of contamination user has to decontaminate himself and recheck.
Page 11 of 22

CHAPTER - VI
CIRCUIT DIAGRAMS
Page 12 of 22

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6 6
5 5
4 4
3 3
2 2
1 1
F F E E D D C C B B A A
PALM MONITOR TYPE:PCM738
+12V REGULATOR
STANDARD CIRCUIT FOR ADJUSTABLE VERSION
VOUT=
POWER SUPPLY
TOGGLE SWITCH
LI-ION BATTERY
7.4V
+-
CERAMIC
TO MICRO CONTROLLER
SMD
TO HYBRID PCB
LOAD
0
A3
1 1Saturday, February27, 2016
Title Size Document Number Rev Date: Sheet of
RV1.2
RV1.3 RV1.1
-VE Tailpulse
RV1.2 RV1.1
RV1.3
P0.4
OPTO_SIG
HVref
TTL1
TTL2 NERST
P0.4 OPTO_SIG
HVref
TTL1 -VE tailpulse
NERSTTTL2
BUZZIN
BUZZIN
+VIN +12V
+VIN
-VIN
+VIN
+5V
+5V
GND-12GND-12
3
3
+12V
GND-12
3
3
3
+5V
+5V
HV
HV
GND-12
3
+VIN
+5V
+5V
RV3
50K
C12
0.01uf/2KV
SR1
BAT760
TP10
TP5
J2
090130-1210
12 34 5
10 9 8 7 6
C10
0.1uf/50V
REG2
LM2586-XX
1
2 3
4
5
6
7
FADJ.ON/OFF
COMP FB
GND
SW
FSYNC
VIN
C9
0.01uf/2KV
C5
0.1uF
1 2
+
C8 10uF/16V
HVGND R5
1M
L2
15uH-744031150
1 2
R1 330K
R6 330K
J1
CON4
1 2 3 4
TP3
TP1
+ -
U2A
LM358
3 21
84
HV1
C4900-51
1 2 3 4 5 6
R11 10K
R3
100K
J3
090130-1210
12 34 5
10 9 8 7 6
TP4
U1
MAX883
8 7 6 5
1 2 3 4
LBI OFF GND VIN
LBO
SET
GND
OUT
TP2
R7 2K
R2
100E
R9 OPEN
+
C4
100uF/25V
C6
0.47uf
1 2
R10 33M
R8 0E
C13
1KPF/2KV
R12 10K
HV
R4
100K
C2
47uF/40V
+
C7
680uF/16V
C11 0.1uf
C1
10uF/16V
Page 13 of 22

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F F E E D D C C B B A A
PALM MONITOR TYPE:PCM738
18BIT MULTI CHANNEL ADC
EEPROM
20 X4 DISPLAY
COUNTER
DISPLAY PLUGIN MODULE
RTC
LCD DISPLAY 20416SLW/X
DISPLAY PCB
TO MICRO CONTROLLER
0
A3
1 1Saturday, December 19, 2015
Title Size Document Number Rev Date: Sheet of
INT0
INC
P3.6
TTL1
P3.6
INT0
START/STOP
FN
START/STOP
TTL2
TTL2
BUZZ_IN
DEC
DEC
FN INC
HVref
NERST
BUZZ_IN
USB_RX
FN
TTL2
INC
INT0
TTL2
TTL1
HVref
FN
P3_6 USB_TX
INC
BUZZIN
INT0
P3_6
BATref
BATref
NERST
NERST
HVref P0.4
OPTO_SIG
TTL1
TTL2
START/STOP
DEC
START/STOP DEC
OPTO_SIG
BUZZIN
P0.4
VCC
+VIN
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
AGND
VCC
+VIN
AGND
VCC
VCC
VCC
VCC
+VIN
VCC
VCC
U4
DS1307DZ-SO-8
1 2 3 4
8 7 5 6
OSCI OSC0 VBAT GND
VCC
SQW OUT
SDA
SCL
C18
0.01uf
R16
100E,1/2W
R12 100K
R37
R
R18
10K
+
C21
10uF/16V-1206
Y2
32.768KHz
D5
1N4148W-SOD323
R43 100E,1/2W
R38 100K
R35 5.1K C19
33PF
C17
0.01uf
U6 PCF8593-SO8
1 2 3 4
8 7 6 5
OSC1 OSC0 A0 GND
VCC
INT
SCL
SDA
J6
CON4 1 2 3 4
G
D
S
Q3 SI2302DS
1
32
C20
33PF
Y1
3.6864MHz
D3
G
DS
Q4
SI2301DS-T1
1
32
J5
090130-1210
12 34 5
10 9 8 7 6
BT2 3V li.bat
12
R40 100K
D1
R11 100K
D4
U7
Value = 24C64_SO-8
1 2 3 4
8 7 6 5
A0 A1 A2 GND
VCC
WP
SCL
SDA
PLCC44
U8
AT89LS52/8253/SST89V516-PLCC-44
35
19
9
39
38
37 36
31
34
33
29
44
20
18
14
21
22
23
25 24 26 27 28
15
16
17
32
13
11
10
1
2 3 4 5 6
7 8
12
30 40 41 42 43
EA/VP
P3.7(RD)
P1.7
P0.4(AD4)
P0.5(AD5)
P0.6(AD6) P0.7(AD7)
P2.7(A15)
NC4
ALE/PROG
P2.5(A13)
VCC
XTAL2
P3.6(WR)
P3.2(INT0)
XTAL1
GND
NC3
P2.1(A9) P2.0(A8)
P2.2(A10) P2.3(A11) P2.4(A12)
P3.3(INT1)
P3.4(T0)
P3.5(T1)
PSEN
P3.1(TXD)
P3.0(RXD)
RST
NC1
P1.0 P1.1 P1.2 P1.3 P1.4
P1.5 P1.6
NC2
P2.6(A14)
P0.3(AD3) P0.2(AD2) P0.1(AD1) P0.0(AD0)
R42
100K
LED1
10X10mm
R3 0E
D2
R41 100K
R15 2.2K
R36 5.1K
C14
0.01uf
U3
MCP3422-SO-8
1 7
5
3 6
4 8 2
CH1+ CH2+
SCL
VDD VSS
SDA
CH2- CH1-
D6
1N41480SOD323
R19 10K
R17 100K
R39 0E
+
BZ1
PB-12N32MP-05AQ
1 2
KD BERG-15PIN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
J7
1 2 3 4 5 6
P4
10K-3296W
1 3
2
R1 R
R23 22K
R2 R
C16
0.01uf
Page 14 of 22

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3 3
2 2
1 1
F F E E D D C C B B A A
SSOP28
PART NO.
FTDI CHIP FOR USB to UART
PALM MONITOR TYPE:PCM738
DISPLAY PCB
0
A3
2 2Saturday, December 19, 2015
Title Size Document Number Rev Date: Sheet of
USB_RX
USB_DATA_PLUS
USB_DATA_MINUS
USB_DATA_MINUS
USB_TX
USB_DATA_PLUS
USB_DATA_PLUS USB_DATA_MINUS
VBUS
VBUS
VBUS
VBUS
TP8
1
R25 0E
FB1
BLM21PG221SN1D-0805
12
TP9
1
U9
FT232RL
1 2 3
4
5 6
7
8 9 10 11 12 13 14
28 27
26
25
24 23 22
21
20 19
18
17 16 15
TXD
DTR#
RTS#
VCCIO
RXD
RI#
GND1
NC1
DSR#
DCD#
CTS#
CBUS4 CBUS2 CBUS3
OSCO OSCI
GND4
AGND
NC2
CBUS0 CBUS1
GND3
VCC RESET#
GND2
3V3OUT USBDM USBDP
J4
CON5
1 2 3 4 5
C25 0.1uf
1 2
+C24
4.7uF/6.3V
J4A
MICRO USB CONNECTOR
1 2 3 4 5
C23 0.1uf
1 2
Page 15 of 22

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2 2
1 1
F F E E D D C C B B A A
HY-PPC
HYBRID PCB
PALM MONITOR TYPE:PCM738
SEPERATE PCB INSIDE HANDLE
FROM POWER SUPPLY PCB
0
A3
1 1Monday, August10, 2015
Title Size Document Number Rev Date: Sheet of
RV1.2 RV1.3
RV1.1
RV1.2 RV1.1 RV1.3
BUZZIN
TTL1
TTL2
NERST
TTL2 NERST
TTL1
-VE tailpulse
-VE tailpulse
BUZZIN
+5V
+5V
TP10
TP2
TP1
TP7
RV1
50K
R16
0E
C14
0.01uF
J4
090130-1210
12 34 5
10 9 8 7 6
RV2
100K-3296W
TP9
U2
HYBRID
53
9 8
6 7
1 4 2
10
VCCGND
IN from det 1 O/P
Q
RESET
Comparator O/P Threshold 2o/p
Q2
R15 51E
Page 16 of 22

CHAPTER - VII
MAINTENANCE AND WARRANTY CLAUSE
(A) GENERAL :
As per the warranty clause of the company we provide one year warranty during which
period we provide free service at our works. Hence in case of any mal-function in our
instruments you are requested to send the unit back to our works by RPP/COURIER/SPEED
POST PARCEL/GAT/XPS/door delivery. We shall arrange immediate rectification/
replacement within two weeks from the date of receipt of the equipment at our place. Please
note that the equipment will be serviced at our works only.
The equipment is to be sent to :
The Servicing Department
NUCLEONIX SYSTEMS PRIVATE LIMITED
Plot No : 162 A & B, PHASE II,
I.D.A.Cherlapally,
Hyderabad - 500 051
It is to be noted that the detector probe is not covered by the warranty.
Note : In respect of all types of portable radiation monitors, it may be necessary to checkup and
recalibrate the equipment once a year at our works.
(B) UP KEEPING :
It is likely that the front S.S mesh can get contaminated by alpha, in course of usage so, to
remove the alpha contamination struck on the mesh, one can remove the mesh by unscrewing
two bottom screws with a plate that is holding the mesh.
Then clean the mesh by soap water/liquid soap & clean water dry it up & refix it for usage.
(C) HOW TO CHANGE ALUMINIZED MYLAR :
If aluminized mylar gets ruptured or develops pin holes, one has to refix the mylar.
Place aluminized mylar (spare sheet) slightly of over size on the front face (after removing the
defective one). Cut the mylar atleast 15mm excessive on all side & fix it on to back with a black
tape. Ensure that it is fixed lightly.
Page 17 of 22

CHAPTER –VIII
CONTACT US FOR AVAILING SERVICES
Postal/Mailing Address (Phone / Fax / Email)
Nucleonix Systems Pvt Ltd.
Plot No. 162 A&B, Phase II, I.D.A.,
Cherlapally, Hyderabad - 500 051, Telangana, India.
Phone: + 91-40-27263701, 040-27262146, 68888777
Mobile: [phone]
Fax : + 91-40 - 27262146
Email : [email protected]
For any information, Contact by email is always appreciated.
(This will help us to respond to you quickly)
Marketing Department :
a) Sales / Commercial Information / Field installation and servicing
For any Commercial, Price information, Product information, customer coordination &
quotation of our products customer related commercial services, please contact front office
marketing staff through the listed Email Ids or Phone Nos. given below
Whom to Contact:
1.U.Sulochana
(Sr. Business Executive)
Mob:[phone], Ph-040-27263701 [email protected]
2. R.Maniram
(Business Executive)
Mob:[phone], Ph-040-27263701 [email protected]
3. Ch.Gayatri
(Business Executive)
Mob:[phone], Ph-040-27263701 [email protected]
Contact Numbers
Business Executives: Contac t by E-mail ID
Page 18 of 22