Lutron Electronics EMF-819 Operation Manuals

50 MHz to 3 GHz Radio Frequency Radiation Meters
Electromagnetic Field strength measurement

3 AXIS RF ELECTROMAGNETIC
FIELD METE

R

Model : EMF-819

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.......................................

.

6

6. MEASUREMENT CONSIDERATION................................

.

7

7. MEASURING PROCEDURE............................................

.

8

7-1 Buttons instructions..............................................

.

8

7-2 Symbols & units of display.....................................9

7-3 Unit Selection...................................................... 10

7-4 Frequency Team Selection.....................................10

7-5 Alarm Limit Settin

g

and Alarm start........................10

7-6 Data Hold.............................................................11

7-7 Data Record (Max., Min. readin

g

)...........................11

7-8 Peak Hold.............................................................12

8. AUTO POWER DISABLE.................................................12

9. RS232 PC SERIAL INTERFACE.......................................

.

12

10. BATTERY REPLACEMENT.............................................14

11. SYSTEM RESET......................................................... 14

12. OPTIONAL ACCESSORIES............................................15

1. FEATURES

*3 Axis probe.
* Radio frequency electromagnetic field tester.
* Wide measuring frequency ranges, 50 MHz to 3 GHz.
* EMF-819 is used for broadband devices of monitoring

the wide range radio frequency electromagnetic field
value.

* For precision measurement consideration, the meter

is included one probe :
EP-05H ( Frequency range : 50 MHz to 3 GHz )

* Unit : V/m, W/m^2, mW/cm^2.
* Frequency Selection, two points : Normal, 2.45 GHz.
* 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.
* Hard carrying case is included..
* 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 10 ).

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)

10 to 400 MHz 28
400 to 2000 MHz 1.375 x f^1/2
2 to 300 GHz 61

Occupational

Frequency range e-field strength (V/m)

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 Input 50 OHM
Impedance
Frequency Two points selection : Normal, 2.45 GHz.
Selection
Sensor Semiconductor
Structure
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.

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

4