Lutron Electronics EMF-839 Bedienungsanleitung
3 axis
100 KHz to 3 GHz Radio Frequency Radiation Meters
Electromagnetic Field strength measurement
RF ELECTROMAGNETIC
FIELD METER
Model : EMF-839
Your purchase of this RF
EMF METER marks a
step forward for you
into the field of
precision measurement.
Althou
g
h this METER is
a complex and delicate
instrument, its durable
structure will allow
many years of use if
proper operatin
g
techniques are
developed. Please read
the followin
g
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1. FEATURES..................................................................1
2. APPLICATIONS........................................................... 2
3. SAFETY INSTRUCTIONS..............................................
.
2
4. SPECIFICATIONS........................................................4
5. FRONT PANEL DESCRIPTION.......................................7
6. MEASUREMENT CONSIDERATION................................8
7. MEASURING PROCEDURE............................................9
7-1 Buttons instructions..............................................9
7-2 Symbols & units of display....................................
.
10
7-3 Unit Selection...................................................... 11
7-4 Frequency Team Of Selection................................11
7-5 To see the individual axis' measurin
g
EMF value.....
.
11
7-6 Alarm Limit Settin
g
and Alarm start.......................
.
12
7-7 Data Hold............................................................
.
13
7-8 Data Record (Max., Min. readin
g
)..........................
.
13
7-9 Peak Hold............................................................13
7-10 Data Lo
gg
er.......................................................13
7-10-1 How to recordin
g
data.................................14
7-10-2 How to sendin
g
data...................................15
7-10-3 How to show sample time...........................
.
18
7-10-4 How to show date and time.........................18
8. INTERIOR SETTING MODE.......................................... 19
8-1 Check Memory Space.............................................20
8-2 Clear Memory........................................................20
8-3 Date/Time Settin
g
.................................................
.
20
8-4 Sample Time Settin
g
..............................................21
8-5 Auto Power Off Default Settin
g
...............................21
8-6 Escape from the SETTING function.........................21
9. RS232 PC SERIAL INTERFACE......................................
.
22
10. BATTERY REPLACEMENT............................................24
11. SYSTEM RESET......................................................... 24
12. OPTIONAL ACCESSORIES...........................................25
1. FEATURES
* 3 Axis probe.
* Radio frequency electromagnetic field tester.
* Wide measuring frequency ranges, 100 KHz to 3 GHz.
* EMF-839 is used for broadband devices of monitoring
the wide range radio frequency electromagnetic field
value.
* For precision measurement consideration, the meter
is included two probes :
EP-04L ( Low frequency Probe, 100 KHz to 100 MHz )
EP-03H ( High frequency Probe, 100 MHz to 3 GHz )
* Unit : V/m, W/m^2, mW/cm^2.
* Alarm setting function can warn the user if the
measuring antenna is too near the strong radiation
sources, the buzzer will sound to remind the user.
* Peak hold function to latch peak value.
*Data hold function to lock the current reading.
* RS232 computer interface.
* Real time data logger, build in clock ( hour-MIN-sec.,
year-month-date ).
* Auto or manual data record, 16,000 Data logger no.
* Wide sampling time adjustment range from one second
to 8 hours 59 minutes 59 seconds.
* Heavy duty hard carry case.
* Large size LCD with contrast adjustment, which can fit
best viewing angle.
* Microcomputer circuit provides special function & offers
high accuracy.
* Powered by 006P DC 9V battery or DC 9V adapter.
1
2. APPLICATIONS
This meter is specially developed for measuring or
monitoring electromagnetic field, for example:
cell-phone station, hospital equipment, radar ,
micro-wave oven, radiation work, TV antenna , Radio
station , welding equipment , baking- equipment,
television , computer , factory, laboratory , and other
environment...etc.
3. SAFETY INSTRUCTIONS
Danger
* For worker's safety, be aware that persons with
electromagnetic implant ( e.g. cardiac-pacemarker ) are
subject to especial danger in some case.
* Particular to observe the local safety regulations of the
operator of the equipment.
* Before using the device, it need to know that how to
setting " alarm-limit " value ( refer to page 12 ).
Attention
* Claims by some scientists that long term exposure to
electromagnetic field may be the cause of childhood
leukemia & other forms of cancer.
* Complete answers to any of these and related
questions are not currently available. At the present
time the most common practice is to avoid excess
exposure over long period of time.
2
* Complete answers to any of these and related
" Prudent Avoidance " as stated by the Environmental
Protection Agency(EPA) USA is recommended.
* According to ICNIRP of reference levels to time-varying
electromagnetic fields, The E-field strength levels are:
General public
Frequency range e-field strength (V/m)
3 to 150 kHz 87
0.15 to 1 MHz 87
1 to 10 MHz 87/f^1/2
10 to 400 MHz 28
400 to 2000 MHz 1.375 x f^1/2
2 to 300 GHz 61
Occupational
Frequency ran
g
e e-field strength (V/m)
65 to 1000 kHz 610
1 to 10 MHz 610/f
10 to 400 MHz 61
400 to 2000 MHz 3 x f^1/2
2 to 300 GHz 137
3
4. SPECIFICATIONS
4-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 58 mm x 34 mm.
Measurement V/m, mW/cm^2, W/m^2.
Unit
Accuracy < 2 dB.
Probe structure 3 Axis.
Probe Type EP-03H : 100 MHz to 3 GHz.
Selection EP-04L : 100 kHz to 100 MHz.
Probe Input 50 OHM
Impedance
Frequency EP-03H: 900 MHz, 1 GHz, 1.8 GHz,
Selection 2.4 GHz, 2.45 GHz, 3 GHz.
Points EP-04L: 100kHz, 200kHz, 500kHz, 1MHz,
10MHz, 13.56MHz, 100MHz.
Sensor Semiconductor
Structure
Sampling Time Manual Press the data logger button
of Data Logger once will save data one time.
* Set the sampling time to
0 second
Auto 1 sec to 8 hour 59 min. 59 sec.
Data Hold Freeze the display reading.
REC Function Record Maximum & Minimum value.
Power off Auto shut off saves battery life or
manual off by push button.
* Can default auto power off or manual
power off.
* When default auto power off ,
power will off automatically after
10 min. if no button be pressed.
4
Peak Hold To latch the peak measurement value.
Alarm Setting Buzzer will sound when display over the
setting value.
Sampling Time Approx. 1 second.
Low Battery When display show Low battery
Indicator Indicator, it should chan
g
e the batteries.
Data Output RS 232 PC serial interface.
Operating 0 to 50 .℃
Temperature
Operating Less than 80 %RH.
Humidity
Power Supply DC 9 V battery ( 006P )
* Heavy duty or Alkaline type.
DC 9V adapter input.
Power Current Approx. DC 5.95 mA
Weight 523 g/ 1.16 LB.
Dimension
Main instrument :
200.0 x 76.2 x 36.8 mm
Probe :
70 mm ( diameter) x 290 mm ( length)
Accessories Instruction manual.........................1 PC
Included EP-03H Probe.............................. 1 PC
EP-04L Probe................................
.
1 PC
Memory card for EP-03H................
.
1 PC
Memory card for EP-04L.................1 PC
Hard carrying case.................. 1 PC
DC 9V power adapter.....................1 PC
Optional RS232 cable, UPCB-02.
Accessories USB cable, USB-01.
Data Acquisition software, SW-U801-WIN.
5
4-2 Electrical Specifications ( 23 ± 5 )℃
Strength Range Resolution Effective Value
0 to 200.00 V/m 0.01 V/m > 1 V/m
0 to 99.999 W/m^2 0.001 W/m^2 > 0.03 W/m^2
0 to 9.9999 mW/cm^2 0.0001 mW/cm^2 > 0.0003 mW/cm^2
Frequency Range Accuracy Test Point Probe NO.
400 KHz to 100 MHz < 2 dB 30 V/m EP-04L
50 MHz to 2.5 GHz < 2 dB 60 V/m EP-03H
Remark:
* Measurement under other frequency range ( below
400 KHz and over 2.5 GHz ), the reading value just
for reference only.
* For precision measurement consideration, it should
select the " Frequency Team point " near the
frequency value of measuring object.
6
5. FRONT PANEL DESCRIPTION
Fig. 1
5-1 Display 5-11 Probe Input Socket
5-2 Power Button 5-12 Probe Memory Card
5-3 Hold / Esc Button 5-13 DC Adapter Input Socket
5-4 REC / Enter Button 5-14 RS-232 Output Terminal
5-5 Freq. Team Select Button 5-15 LCD contrast adj.
5-6 Unit Button 5-16 Battery Cover
5-7 Peak Hold Button 5-17 Stand
5-8 Alarm Set / Start Button 5-18 Reset Button
5-9 Time / Send Button 5-19 Probe Sensing Head
5-10 Logger / Set Button 5-20 Probe Plug
7
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