SD card real time data Recorder
AC/DC MAGNETIC METER
Model : MG-3003SD
Your purchase of this
AC/DC MAGNETIC
METER with SD CARD
DATA RECORDER
marks a step forward for
you into the field of
precision measurement.
Although this meter is a
complex and delicate
instrument, its durable
structure will allow
many years of use if
proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION
3, Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com
MRC.6.17
TABLE OF CONTENTS
1. FEATURES.................................................................................................................
1
2. SPECIFICATIONS................................................................................................
2
3. FRONT PANEL DESCRIPTION.............................................................................
4
4. MEASURING PROCEDURE.........................................................................................
5
4-1 AC/DC magnetic field measurement.........................................................................
5
4-2 Data Hold....................................................................................................................................
7
4-3 Data Record................................................................................................................
7
5. DATALOGGER....................................................................................................
9
5-1 Preparation before execute datalogger function........................................................
9
5-2 Auto Datalogger ( Set sampling time ≧
1 second ).....................................................
10
5-3 Manual Datalogger ( Set sampling time = 0 second )............................................
11
5-4 Check time information...............................................................................................
11
5-5 SD Card Data structure...............................................................................................
12
6. Saving data from the SD card to the computer....................................
13
7. ADVANCED SETTING..........................................................................
15
7-1 Set clock time ( Year/Month/Date, Hour/Minute/Second )………………………....
15
7-2 Set sampling time .......................................................................................................
16
7-3 Auto power OFF management .................................................................................................
16
7-4 Set beep Sound ON/OFF..........................................................................................
17
7-5 Decimal point of SD card setting............................................................................
17
7-6 SD memory card format...........................................................................................
18
7-7 Select the magnetic field unit to mT or G...............................................................
18
8. POWER SUPPLY from DC ADAPTER..................................................
19
9. BATTERY REPLACEMENT........................................................................
19
10. SYSTEM RESET.................................................................................
19
11. RS232 PC serial interface....................................................................
20
12. PATENT.................................................................................................
21
1. FEATURES
* Wide range, general purpose magnetic measurement.
for industrial, mechanical, material, electrical, laboratory
field usage.
* Unit : G ( Gauss ), mT ( milli Tesla ).
* DC and AC magnetic field measurement
* DC Range : 300.00 mT/3000.0 mT.
AC Range : 150.00 mT/1500.0 mT.
* Resolution : 0.01/0.1 mT, 0.1/1 G.
* N pole/S pole indicator.
* Use Hall sensor with automatic Temp. compensation.
* Zero button for DC magnetic function.
* Separate probe, easy operation and convenient
for remote measurement.
* RS232/USB computer interface.
* Microprocessor circuit assures maximum possible
accuracy, provides special functions and features.
* Heavy duty & compact housing with hard carrying case,
designed for easy carry out & operation.
* Auto shut off is available to save battery life.
* Real time SD memory card Datalogger, it Built-in Clock
and Calendar, real time data recorder , sampling time set
from 1 second to 3600 seconds.
* Manual datalogger is available ( set the sampling
time to 0 ), during execute the manual datalogger
function, it can set the different position ( location ) No.
( position 1 to position 99 ).
* Innovation and easy operation, computer is not need
to setup extra software, after execute datalogger, just
take away the SD card from the meter and plug in the
SD card into the computer, it can down load the all the
measured value with the time information (year/month/date
/ hour/minute/second ) to the Excel directly, then user
can make the further data or graphic analysis by themselves.
* SD card capacity : 1 GB to 16 GB.
* LCD with green light backlight, easy reading.
* Can default auto power off or manual power off.
* Data hold, record max. and min. reading.
* Microcomputer circuit, high accuracy.
* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.
1
2. SPECIFICATIONS
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 52 mm x 30 mm
Measurement mT milli Tesla
Unit G Gauss
Measurement mT Range 1 300.00 mT x 0.01 mT
Range, DC Range 2 3,000.0 mT x 0.1 mT
G Range 1 3,000.0 G x 0.1 G
Range 2 30,000 G x 1 G
Measurement mT Range 1 150.00 mT x 0.01 mT
Range, AC Range 2 1,500.0 mT x 0.1 mT
G Range 1 1,500.0 G x 0.1 G
Range 2 15,000 G x 1 G
Accuracy DC ± ( 5 % rdg. + 10 digit ) at 23 ± 5 ℃
AC ± ( 5 % rdg. + 20 digit ) at 23 ± 5 ℃
Frequency AC measurement :
Response 50 Hz / 60 Hz
Sensor Hall sensor.
Datalogger Auto 1 sec to 3600 sec.
Sampling Time @ Sampling time can set to 1 second,
Setting range but memory data may loss.
Manual
Push the data logger button
once will save data one time.
@ Set the sampling time to
0 second.
@ Manual mode, can also select the
1 to 99 position ( Location ) no.
Data error no. ≦ 0.1 % no. Of total saved data typically.
Temp. Probe head build the Temp. sensor
Compensation for using the ATC ( automatic Temp.
for hall sensor compensation ).
Field Direction Uniaxial.
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
2
Display Approx. 1 second.
Sampling Time
Power off Manual off by push button or
Auto shut off to save battery life.
Operating 0 to 50 ℃.
Temperature
Operating Less than 85% R.H.
Humidity
Data Output RS 232/USB PC serial interface.
* Connect the optional RS232 cable
UPCB-02 will get the RS232 plug.
* Connect the optional USB cable
USB-01 will get the USB plug.
Power Supply ( Alkaline or Heavy duty type DC 1.5 V battery ) .
(UM3,AA) X 6 PCS or equiralent
DC 9V adapter input.
* AC/DC power adapter is optional.
Power Current
Normal operation ( w/o SD card save
data and LCD Backlight is OFF) : Approx. DC 13 mA.
When SD card save the data but and
LCD Backlight is OFF) : Approx. DC 35 mA.
* If LCD backlight on, the power
consumption will increase approx.3 mA.
Weight Approx. 303 g/0.67 LB.
( Meter & probe )
Dimension Main instrument : Probe :
181 x 68 x 45 mm 195 x 25 x 19 mm
( 7.1 x 2.7 x 1.8 inch ) ( 7.7 x 1.0 x 0.7 inch ).
Accessories
Instruction manual.......................................................
1 PC
Included
Magnetic Probe.................................................................
1 PC
Carrying case, CA-06...........................................
1 PC
Optional RS232 cable, UPCB-02
Accessories USB cable, USB-01
Data Acquisition software, SW-U801-WIN
* Above specification tests under the environment RF Field Strength less than 3
V/M & frequency less than 30 MHz only.
3
3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Display 3-12 RS-232 Output Terminal
3-2 Power Button 3-13 Reset Button
3-3 Hold Button 3-14 DC 9V Power Adapter Input Socket
3-4 REC Button 3-15 Battery Compartment/Cover
3-5 Range Button , ▲ Button 3-16 Battery Cover Screws
3-6 Function Button , ▼ Button 3-17 Stand
3-7 Set Button , Time Button 3-18 Tripod Fix Nut
3-8 Log Button , Enter Button 3-19 Probe Sensing Head
3-9 Input Socket 3-20 Probe Handle
3-10 Probe Plug 3-21 Probe Head Cover
3-11 SD card socket
4
4. MEASURING PROCEDURE
4-1 AC/DC magnetic field measurement
1) Power ON the meter by pressing and holding the " Power
Button " ( 3-2, Fig. 1 )for at least 1.5 seconds .
2) magnetic field measurement Function 'DC' or 'AC' select
by pressing and holding the " FUNCTION Button " ( 3-6, Fig. 1 )
until function DC change to AC or function AC change to DC.
3) magnetic field measuremen range select
by pressing and holding the " Range Button " ( 3-5, Fig. 1 ) until
' Range 1' change to' Range 2' or 'Range 2' change to' Range 1' .
4) unit selection :
How to select the unit ( mT, G), the procedures please
refer to chapter 7-7 " Change the unit ( mT, G ) ", page 18 .
Under mT unit Under G unit
RANGE 1
RANGE 2
RANGE 1
RANGE 2
Fig. 2
5
DC magnetic field measurement
* The Display will show " N " or " S " indicator.
* North pole : Display will show " N " indicator
* South pole : Display will show " S " indicator
AC magnetic field measurement
* Display will show " AC " indicator.
* Display will not show " N (S ) indicator.
5) Contact and close the testing material to the probe
head ( refer to Fig. 3 ) , the Display will show the
magnetic field value along with the unit ( mT,G ).
Fig. 3
6) Zero adjustment :
When power ON the meter, due to the environment
interference, the display may show certain values ( not
zero value), it is normal.
6
* Before the measurement, fix the probe at the exact
position, by pressing and holding the” ▲ ( 3-5，Fig. 1 ) “
& "▼ Button ( 3-6，Fig. 1 ) continuously at least
1.5 seconds until the display show " 0 " value, in the same
time the Display will flash once the "ZERO " indicator then
release the finger from the button.
4-2 Data Hold
During the measurement, press the " Hold Button " ( 3-3,
Fig. 1 ) once will hold the measured value & the LCD will
display a " HOLD " symbol.
* Press the " Hold Button " once again will release the data
hold function.
4-3 Data Record ( Max., Min. reading )
1) The data record function records the maximum and
minimum readings. Press the " REC Button " ( 3-4, Fig.
1 ) once to start the Data Record function and there
will be a " REC " symbol on the display.
2) With the " REC " symbol on the display :
a) Press the " REC Button " ( 3-4, Fig. 1 ) once, the "
REC MAX " symbol along with the maximum value
will appear on the display.
b) Press the " REC Button " ( 3-4, Fig. 1 ) again, the
" REC MIN " symbol along with the minimum value
will appear on the display.
c) To exit the memory record function, just press the
" REC Button " for at least 1.5 seconds. The display will
revert to the current reading.
7
Remark :
When make the DC magnetic field measurement
and execute the " RECORD " function, it can not
change from the " North pole " to " South pole "
or from the " South pole " to " North pole "
during the measurement. It can make the
measurement under the same pole ( S pole or N
pole ) only, otherwise the Max., Min. value will
be no sense.
8
5. DATALOGGER
5-1 Preparation before execute datalogger function
a. Insert the SD card
Prepare a " SD memory card " ( 1 G to 16 G, optional ),
insert the SD card into the " SD card socket " ( 3-11, Fig. 1).
The front panel of the SD card should face against the
the down case.
* It recommend use memory card ≦ 4 GB.
b. SD card Format
If SD card just the first time use into the meter, it
recommend to make the " SD card Format " at first. ,
please refer chapter 7-6, (page 18 ) .
*
It recommend strongly, do not use memory cards that
have been formatted by other meter or by other installation
(such as camera…) .
Reformat the memory card with your meter.
*
If the SD memory card exist the trouble during
format by the meter use the computer to
reformat again can fix the problem .
c. Time setting
If the meter is used at first time, it should to adjust the
clock time exactly, please refer chapter 7-1 (page 15).
d. Decimal for the numerical data structure of SD card is
default used the " . " as the decimal, for
example "20.6" "1000.53" . But in certain
countries ( Europe ...) is used the " , " as the
decimal point, for example " 20, 6 "
"1000,53". Under such situation, it should
change the Decimal character at first, details
of setting the Decimal point, refer to Chapter
7-5, page 17.
9
5-2 Auto Datalogger (Set sampling time ≧ 1 second )
a. Start the datalogger
Press the " LOG Button ( 3-8, Fig. 1 ) > 1.5 seconds
continuously, the LCD will show the text of " LOGGER "
indecator and flashing per second, at the same
time the measuring data along the time information will
be saved into the memory circuit.
Remark :
* How to set the sampling time, refer to Chapter 7-2,
page 16 .
* How to set the beeper sound is enable, refer to
Chapter 7-4, page 17 .
b. Pause the datalogger
During execute the Datalogger function, if press the
" LOG Button " ( 3-8, Fig. 1 ) once will pause the
Datalogger function ( stop to save the measuring data
into the memory circuit temporally ). In the same time
the " LOGGER " symbol will stop flashing.
Remark :
If press the " LOG Button " ( 3-8, Fig. 1 ) once again
will execute the Datalogger again, the " LOGGER "
symbol will flashing.
c. Finish the Datalogger
During execute the Datalogger function, press the
" LOG Button ( 3-8, Fig. 1 ) > 1.5 seconds continuously
again will finish the Datalooger function, the " LOGGER "
text will be disappeared and finish the Datalogger function.
10
5-3 Manual Datalogger (Set sampling time = 0 second)
a. Set sampling time is to 0 second
Press the " LOG Button ( 3-8, Fig. 1 )>1.5 second, the LCD
will show the indecator " LOGGER " and " Position no. " symbol
then press the " LOG Button " ( 3-8, Fig. 1 ) once , the
" LOGGER " symbol will flashing once and Beeper will sound once
at the same time the measuring data along the time
information will be saved into the memory circuit .
Remark :
During execute the Manual Datalogger, it can use the "
▲
Button " ( 3-5, Fig. 1) or " ▼ Button " ( 3-6, Fig. 1 ) to
set the measuring position ( 1 to 99, for example room 1
to room 99 ) to identify the measurement location , the
Top Display will show P x ( x = 1 to 99 ).
b. Finish the Datalogger
During execute the Datalogger function, press the " LOG
Button ( 3-8, Fig. 1 ) > 1.5 seconds continuously again will
finish the Datalooger function, the Position no. " PXX " will
be disappeared and finish the Datalogger function.
5-4 Check time information
During the normal measurement ( not execute the
Datalogger ), If press " Time " ( 3-7, Fig. 1 )
once , the LCD display will present the time
information of Year/Month/Date ,Hour/ Minute/Second
and the Sampling time information in sequence.
11
5-5 SD Card Data structure
1) When the SD card is used into the meter, the SD card
When the first time, the SD card is used into the meter,
the SD card will generate a folder :
MGA01
2)
If the first time to execute the Datalogger,
under the route MGA01\, will generate a new
file name MGA01001.XLS.
After exist the Datalogger, then execute again,
the data will save to the MGA01001.XLS until
Data column reach to 30,000 columns, then
will generate a new file, for example MGA01002.XLS
3)
Under the folder MGA01\, if the total files more
than 99 files, will generate anew route, such as
MGA02\ ........
4)
The file's route structure :
MGA01\
MGA01001.XLS
MGA01002.XLS
.....................
MGA01099.XLS
MGA02\
MGA02001.XLS
MGA02002.XLS
.....................
MGA02099.XLS
MGAXX\
.....................
Remark : XX - Max. value is 10.
12
6. Saving data from the SD card
to the computer ( EXCEL software )
1) After execute the Data Logger function, take away the
SD card out from the " SD card socket " ( 3-11, Fig. 1 ).
2) Plug in the SD card into the Computer's SD card slot
( if your computer build in this installation ) or
insert the SD card into the " SD card adapter ". then
connect the " SD card adapter " into the computer.
3) Power ON the computer and run the " EXCEL software ".
Down load the saving data file ( for example the file
name : MGA01001.XLS, MGA01002.XLS ) from the SD
card to the computer. The saving data will present into
the EXCEL software screen ( for example as following
EXCEL data screens ) , then user can use those EXCEL
data to make the further Data or Graphic analysis
usefully.
EXCEL graphic screen ( for example )
13
EXCEL graphic screen ( for example )
14
7. ADVANCED SETTING
Under do not execute the Datalogger function,
press the " SET Button " ( 3-7, Fig. 1 ) continuously at
least >1.5 seconds will enter the " Advanced Setting " mode.
then press the " SET Button " (3-7, Fig. 1 ) once a while
in sequence to select the seven main function, the lower
display will show :
DATE............
Set clock time ( Year/Month/Date, Hour/Minute/Second )
SP-T...............
Set sampling time ( 0 ~ 3600 Second )
POFF..............
Auto power OFF management
BEEP............
Set beeper sound ON/OFF
DEC.................
Set SD card Decimal character
SD- F.............
SD memory card Format
UNIT................
Select the magnetic field. unit to mT or G
Remark :
During execute the " Advanced Setting " function, if
press " SET Button " ( 3-7, Fig. 1 ) > 1.5 seconds will exit
the " Advanced Setting " function, the LCD will return to
normal screen.
7-1 Set clock time ( Year/Month/Date, Hour/Minute/ Second )
When the lower display show " DATE "
1) Press the " Enter Button " (3-8 , Fig.1 ) once,
Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button "
( 3-6, Fig. 1 ) to adjust the value ( Setting start from
Year value ). After the desired value is set, press the
" Enter Button " ( 3-8, Fig. 1 ) once will going to
next value adjustment ( for example, first setting
value is Year then next to adjust Month, Date, Hour,
Minute, Second value ).
15
2) After set all the time value ( Year, Month, Date, Hour,
Minute, Second ), press the " ENETER Button " ( 3-8,
Fig. 1 ) once will save the time value.
Remark :
After the time value is setting, the internal clock will
run precisely even Power off if the battery is under
normal condition ( No low battery power ).
7-2 Set sampling time ( seconds )
When the lower display show " SP-T "
1) Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button " (
3-6, Fig. 1 ) to adjust the value ( 0, 1, 2, 5, 10, 30,60,
120, 300, 600, 1800,3600 seconds ).
2) After the Sampling value is selected, press the
" Enter Button " ( 3-8, Fig. 1 ) will save the setting
function with default.
7-3 Auto power OFF management
When the lower display show " POFF "
1) Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button "
( 3-6, Fig. 1 ) to select the upper value to " YES " or
" NO ".
YES - Auto Power Off management will enable.
NO - Auto Power Off management will disable.
2) After select the upper text to " YES " or "NO", press the
" ENTER Button " ( 3-8, Fig. 1 ) will save the setting
function with default.
16
7-4 Set beeper sound ON/OFF
When the lower display show "BEEP "
1) Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button "
( 3-6, Fig. 1 ) to select the upper text to " YES " or
"NO".
YES - Meter's beep sound will be ON with default.
NO - Meter's beep sound will be OFF with default.
2) After select the upper text to "YES " or " NO ", press the
" ENTER Button " ( 3-8, Fig. 1 ) will save the setting
function with default.
7-5 Decimal point of SD card setting
The numerical data structure of SD card is default used
the " . " as the decimal, for example "20.6" "1000.53" .
But in certain countries ( Europe ...) is used the " , " as
the decimal point, for example " 20,6 " "1000,53".
Under such situation, it should change the Decimal
character at first.
When the lower display show "DEC "
1) Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button "
( 3-6, Fig. 1 ) to select the upper text to " USA " or
" EURO ".
USA - Use " . " as the Decimal point with default.
EURO - Use " , " as the Decimal point with default.
2) After select the upper text to " USA " or " EURO ",
press the " ENTER Button " ( 3-8, Fig. 1 ) will save the
setting function with default.
17
7-6 SD memory card Format
When the lower display show " SD- F "
1) Use the " ▲ Button " ( 3-5, Fig.1 ) or " ▼ Button " (3-6
, Fig.1 ) to select the upper value to " YES " or " NO ".
YES - Intend to format the SD memory card
NO - Not execute the SD memory card format
2) If select the upper to " YES ", press the " Enter Button
" ( 3-8, Fig. 1 ) once again, the Display will show text
"YES ENTER " to confirm again, if make sure to do the
SD memory card format, then press " Enter Button "
once will format the SD memory clear all the existing
data that already saving into the SD card.
7-7 Select the magnetic field. unit to mT or G
When the lower display show "UNIT "
1) Use the " ▲ Button ( 3-5, Fig.1 )" or " ▼ Button "(3-6,
Fig. 1 ) to select the upper Display text to " mT " or " G ".
mT - magnetic field unit is mT
G - magnetic field unit is G
2) After Display unit is selected to " mT " or " G", press the
" Enter Button " ( 3-8, Fig. 1 ) will save the setting
function with default.
18
8. POWER SUPPLY from DC
ADAPTER
The meter also can supply the power supply from the
DC 9V Power Adapter ( optional ). Insert the plug of
Power Adapter into " DC 9V Power Adapter Input Socket
" ( 3-14, Fig. 1 ). The meter will permanent power ON
when use the DC ADAPTER power supply ( The power
Button function is disable ).
9. BATTERY REPLACEMENT
1) When the left corner of LCD display show " ", it
is necessary to replace the battery. However, in-spec.
measurement may still be made for several hours after
low battery indicator appears before the instrument
become inaccurate.
2) Loose the screws of the " Battery Cover " ( 3-16, Fig. 1 )
and take away the " Battery Cover "( 3-15, Fig. 1 ) from
the instrument and remove the battery.
3) Replace with DC 1.5 V battery ( UM3, AA,
Alkaline/heavy duty ) x 6 PCs, and reinstate the cover.
4) Make sure the battery cover is secured after changing
the battery.
10. SYSTEM RESET
If the meter happen the troubles such as :
CPU system is hold ( for example, the key button can
not be operated... ).
Then make the system RESET will fix the problem.
The system RESET procedures will be either following
method :
During the power on, use a pin to press the " Reset
Button " ( 3-13, Fig. 1 ) once a while will reset the
circuit system.
19
11. RS232 PC SERIAL INTERFACE
The instrument has RS232 PC serial interface via a 3.5
mm terminal ( 3-12, Fig. 1 ).
The data output is a 16 digit stream which can be
utilized for user's specific application.
A RS232 lead with the following connection will be
required to link the instrument with the PC serial port.
Meter PC
(9W 'D" Connector)
Center Pin............................................
Pin 4
(3.5 mm jack plug)
Ground/shield...........................................
Pin 2
2.2 K
resistor
Pin 5
The 16 digits data stream will be displayed in the
following format :
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Each digit indicates the following status :
D0 End Word = 0D
D1 & D8 Display reading, D8 = MSD , D1 = LSD
For example :
If the display reading is 1234, then D8 to
D1 is : 00001234
D9 Decimal Point(DP), position from right to the left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
D10 Polarity
0 = Positive 1 = Negative
D11 & D12 Annunciator for Display
mT = E3 G = B5
D13 When send the upper display data = 1
D14 4
D15 Start Word
20
RS232 FORMAT : 9600, N, 8, 1
Baud rate 9600
Parity No parity
Data bit no. 8 Data bits
Stop bit 1 Stop bit
12. PATENT
The meter ( SD card structure ) already
get patent or patent pending in following
countries :
Germany Nr. 20 2008 016 337.4
JAPAN 3151214
TAIWAN M 358970
M 359043
CHINA ZL 2008 2 0189918.5
ZL 2008 2 0189917.0
USA Patent pending
21
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