Elma Instruments 593R Bedienungsanleitung

Manual

Elma 593R ELECTROSMOG METER

EAN: 5706445340330

 
 
 
CONTENTS 
 
Title Page 
1SAFETY INFORMATION ..............................................................................2
2INTRODUCTION.............................................................................................3
2.1 Fundamentals ....................................................................................3
2.2 Application .........................................................................................4
2.3 Features ............................................................................................4
3SPECIFICATIONS...........................................................................................5
3.1 General specifications .......................................................................5
3.2 Electrical specifications......................................................................5
4OPERATION.....................................................................................................6
4.1 Front panel controls description.........................................................6
4.2 LCD display description .....................................................................8
4.3 Use E-field sensor .............................................................................9
4.4 Explanatory notes ..............................................................................9
4.5 Setting the meter .............................................................................11 
4.6 Making measurements ....................................................................15 
4.7 Manual data memory storing individual measured values ...............16 
4.8 Setting current data and time...........................................................18 
4.9 LCD backlight function.....................................................................18 
5BATTERY CHARGING ................................................................................18 
 
※
Copyright ©
 
2020 Elma Instruments. All rights reserved.
 

Elma 593R

1 SAFETY INFORMATION

CAUTION

•When first use the meter or prolonged storage the meter, please charge the meter at least

10 minutes then use the meter.

•Before making a measurement, check if the low battery symbol (

) is shown on the

display as soon as the meter is switched on or the battery remained capacity indicate “

” symbol only 20%, please charging the battery.

•Avoid shaking the meter, particularly in the measurement mode.

•The accuracy and function of the meter may be adversely affected by the specified limits outside

and improper handling.

DANGER!

•In some cases, work in the vicinity of powerful radiation sources can be a risk of your life.

•Be aware that persons with electronic implants (e.g., cardiac pacemakers) are subject to particular

dangers in some cases.

•Observe the local safety regulations of the facility operation.

•Observe the operating instructions for equipment, which is used to generate, conduct or consumer

electromagnetic energy.

•Be aware that secondary radiators (e.g., reflective objects such as a metallic fence) can cause a

local amplification of the field.

•Be aware that the field strength in the near vicinity of radiators increases proportionally to the

inverse cube of the distance. This means that enormous field strengths can result in the

immediate vicinity of small radiation sources (e.g., leak in waveguides, inductive ovens).

•Field strength measuring device can underrate pulsed signals. Particularly with radar signals,

significant measurement errors can arise.

•

All field strength measuring devices have a limited specified frequency range. Fields with spectral

components outside of this frequency range are generally incorrectly evaluated and tend to be

underrated. Before using field strength measuring devices, you should thus be certain that all

field components to be measured lie in the specified frequency range of the measuring device.

Elma 593R

2 INTRODUCTION

2.1 Fundamentals

❑Electromagnetic pollution:

This Meter used to indicate electromagnetic pollution generated artificially. Wherever there is a

voltage or a current, the electric (E) and magnetic (H) fields arise. All types of radio broadcasting and

TV transmitters produce electromagnetic fields, and they also arise in industry, business and the

home, where they affect us even if our sense organs perceive nothing.

❑Electric field strength (E):

A field vector quantity that represents the force (F) on an infinitesimal unit positive test charge (q) at a

point divided by that charge. Electric field strength is expressed in units of volts per meter (V/m).

Use the units of electric field strength for measurements in the following situations:

•In the near-field area of the source.

•Where the nature of the electromagnetic field is unknown.

❑Magnetic field strength (H):

A field vector that is equal to the magnetic flux density divided by the permeability of the medium.

Magnetic field strength is expressed in units of amperes per meter (A/m).

The meter uses of magnetic field strength for measurements only in the far-field area of the source.

❑Power density (S):

Power per unit area normal to the direction of propagation, usually expressed in units of watts per

square meter (W/m2) or, for convenience, units such as milliwatts per square centimeter (mW/cm2).

❑The characteristic of electromagnetic fields:

Electromagnetic fields propagate as waves and travel at the speed of light (c). The wavelength is

proportional to the frequency.

λ(wavelength) =

c (speed of light)

f (frequency)

If the distance to the field source is less than three wavelengths, then we are usually in the near field.

If the distance is more than three wavelengths, the far-field conditions usually hold.

In the near field, the ratio of electric field strength (E) and magnetic field strength (H) is not constant,

so we have to measure each separately.

In the far-field, however, it is enough to just measure one field quantity, then the other could be

computed accordingly.

Elma 593R

2.2 Application

Quite often routine operation, maintenance and service work has to be done in areas where

active electromagnetic fields are present, e.g., in broadcasting stations, etc. Additionally, other

employees may be exposed to electromagnetic radiation. In such cases, it is essential that

personnel are not exposed to dangerous levels of electromagnetic radiation, such as:

❑High frequency (RF) electromagnetic wave field strength measurement.

❑Mobil phone base station antenna radiation power density measurement.

❑Wireless communication applications (CW, TDMA, GSM, DECT).

❑RF power measurement for transmitters.

❑Wireless LAN (Wi-Fi) detection, installation.

❑Spy camera, wireless bug finder.

❑Cellular/Cordless phone radiation safety level.

❑Microwave oven leakage detection.

❑Personal living environment EMF safety.

2.3 Features

The meter is a broadband device for monitoring high-frequency radiation in the range from 10MHz

to 8GHz. The non-directional electric field and high sensitivity also allow measurements of

electric field strength in TEM cells and absorber rooms.

The unit of measurement and the measurement types have been selected to expressed in units of

electrical and magnetic field strength and power density.

At high frequencies, the power density is of particular significance.

It provides a measure of the power absorbed by a person exposed to the field. This power level

must be kept as low as possible at high frequencies.

The meter can be set to display the instantaneous value or the maximum value measured.

Instantaneous and maximum value measurements are useful for orientation, e.g. when first

entering an exposed area.

❑10MHz to 8GHz Frequency range

❑For isotropic measurements of electromagnetic fields

❑Non-directional (isotropic) measurement with three-channel measurement sensor.

❑High dynamic range due to three-channel digital results processing.

❑Configurable alarm threshold and memory function

❑Use rechargeable lithium-ion battery pack

❑LCD backlight function

❑Easy & safety to use

Elma 593R

3 SPECIFICATIONS

3.1 General specifications

•Measurement method: Digital, triaxial measurement.

•Directional characteristic: Isotropic, triaxial.

•Measurement range selection: One continuous range.

•

Display resolution:

0.1mV/m, 0.1A/m, 0.1W/m2, 0.001W/cm2

•Setting time: Typically, 1s (0 to 90% of measurement value).

•Display refresh rate: Typically, 0.5 seconds

•Display type: Liquid-crystal (LCD), 4 digits.

•Audible alarm: Buzzer.

•Units: mV/m, V/m, A/m, mA/m, W/m2, mW/m2, W/m2, W/cm2, mW/cm2

•Display value: Instantaneous measured value, maximum value or maximum average value.

•Alarm function: Adjustable threshold with ON/OFF.

•Calibration factor CAL: Adjustable.

•Manual data memory and read storage: 99 data sets.

•Rechargeable lithium-ion battery: 3.6V, 1940mAh

•Battery charging time: Approx. 3 hours

•Battery operation time: Approx. 10 hours

•Auto power off: 5 minutes.

•Operating temperature range: 0℃to +50℃•Operating humidity range: 25% to 75%RH

•Storage temperature range: -10℃to +60℃•Storage humidity range: 0% to 80%RH

•Dimensions: Approx. 67(W)60(T)247(L)mm. •Weight (including battery): Approx. 250g

•Accessories: Instruction manual, Carrying case, AC adaptor (DC 5V 1.5A).

3.2 Electrical specifications

❑Unless otherwise stated, the following specs hold under the following conditions:

•The meter is located in the far field of a source, the sensor head is pointed towards the source.

•Ambient temperature: +23℃3 0C •Relative air humidity: 25% to 75%

❑Sensor type: Electrical field (E) ❑Frequency range: 10MHz to 8GHz

❑Specified measurement range:

•CW signal (f > 10MHz): 20mV/m to 108.0V/m,

53A/m to 286.4mA/m,

1W/m2 to 30.93W/m2,

0W/cm2 to 3.093mW/cm2

❑Dynamic range: Typically, 75dB ❑Absolute error at 1 V/m and 10 MHz: 1.0dB

❑Frequency response:

•Sensor taking into account the typical CAL factor:

1.0dB (10MHz to 1.9GHz) /2.4dB (1.9GHz to 8GHz)

•Isotropy deviation: Typically, 1.0dB (f>10MHz)

•Overload limit: 10.61mW/cm2(200V/m)

•Thermal response (0 to 50℃): 0.5dB

Elma 593R

4 OPERATION

4.1 Front panel controls description

1. E-field sensor.

2. LCD display.

3. key: Press this key to turn the meter on or off.

4. key: Press this key to change sequential: “Instantaneous”→“Max. instantaneous” →

“Max. average”.

5. key:

Press this key to change unit’s selector:

“mV/m or V/m” →“A/m or mA/m” →“W/m2, mW/m2or W/m2”→“W/cm2or mW/cm2””

Press and hold this key while turning the meter on to disable the audible sound, the “ ” symbol

will disappear.

Press this key for 3 seconds to turn on or off the LCD backlight. When no button is pressed at 30

seconds then the backlight auto off.

AVGMAX

Elma 593R

6. key:

Press this key to switch to display date and time.

Press and hold this key while turning the meter on to the alarm setting mode, press

key two times to exit this mode.

Press this key for 3 seconds to switch the alarm function on or off.

7. key: Press this key to enter the current data and time setting mode, press this key

again to exit this mode.

8. key:

Press this key to change sensor axis selector: “All axis” →“X axis” →“Y axis” →“Z axis”.

Press and hold this key while turning the meter on to switch the device to the calibration factor

setting mode, press key to exit this mode.

9. . key:

Press this key one time to store one data set to memory.

Press and hold this key while turning the meter on to enter the clear manually recorded data

mode, press key to exit this mode.

10. . key:

Press this key to switch to the manual data reading mode, press this key again to exit this

mode.

Press and hold this key while turning the meter on to disable the auto power off function, the

“ ” symbol will disappear.

11.  key: Setting current date and time, datalogging interval time, alarm setting value,

calibration factor setting value, or recall manual data memory to read memory data in cycles

control keys.

12. AC adaptor input socket: DC 5V 1.5A

Elma 593R

4.2 LCD display description

1. : Auto power off function on / off.

2. : Displayed: Audible sound function on / off.

3. MAX: Maximum measured value displayed.

4. MAX AVG: Maximum average value displayed.

: Low battery indication.

6. Units: mV/m and V/m : Electric field strength.

A/m and mA/m : Magnetic field strength.

W/m2, mW/m2,W/m2, W/cm2and mW/cm2 : Power density

7. : Measured value displayed as per selected mode and selected units.

8. : Manual stored measured value to memory indication, displays one time store one sets

data into the memory.

9. : Read manual data memory mode indication.

10. . : Manual data memory address number (1~99)./ : The manual data memory full

indication.

11. .ALARM : Alarm function on / off or alarm setting indication.

12. ▲: When the alarm function is on, this is the indication if measured value exceeds the limit.

13. : hh : mm : ss Time displayed. / : YY : MM : DD Date displayed.

14. CAL : Calibration factor indication or setting indication (from 0.20 to 25.00).

15. . Z: Z axis measured value displayed.

16. . Y: Y axis measured value displayed.

17. . X: X axis measured value displayed. / XYZ: Triaxial measured value displayed.

18. : Analog bargraph of each axis (X,Y or Z) measured dynamic range indication for

observing trends.

19. : Battery remained capacity displayed.

AVGMAX

Elma 593R

4.3 Use E-field sensor

The actual 3-channel sensor is located in the head part of the meter. The three voltages generated

by the sensor are fed back to the meter. In far-fields, an E-field sensor is preferable due to the

greater bandwidth. The E-field sensor for frequencies is from 10MHz to 8GHz.

The meter is a small portable instrument that measures the electric field presented in the

atmosphere of the measurement sensor surroundings.

The measurement of the field is done by moving the aerial of the sensor in the desired measured

environment.

You obtain a direct wide band measurement of the field that the measurement sensor is subjected

to. To find the value of the field emitted by a source of interference, simply point the aerial towards

it and get as close as possible (the value of the field is inversely proportional to the distance of the

sensor/emission source). The operator must take care not to bebetween thesource ofdisturbance

and the zone to be checked: the human body shields electromagnetic fields. The E-field sensor is

isotropic, it does not require special handing. Its sensitive part measures the field according to 3

axes without the aerial having to be moved in the 3 planes. Simply point it at the target to make

the measurement.

4.4 Explanatory notes

4.4.1 Units of measurement

The meter measures the electrical component of the field, the default units are those of electrical

field strength (mV/m, V/m). The meter converts the measurement values to the other units of

measurement,i.e.thecorrespondingmagneticfieldstrengthunits(A/m,mA/m)andpowerdensity

units (W/m2, mW/m2, W/m2, W/cm2or mW/cm2) using the standard far-field formulate for

electromagnetic radiation.

The conversion is invalid for near-field measurements, as there is no generally valid relationship

between electrical and magnetic field strength in this situation. Always use the default units of the

sensor when making near-field measurements.

4.4.2 Result modes

The bar graph display always shows each axis (X, Y or Z) the instantaneous measured dynamic

range value. The digit display shows the instantaneous or result according to one of three

modes which can be selected:

•Instantaneous: The display shows the last value measured by the sensor, no symbol is

displayed.

•Maximum instantaneous (MAX): The digital display shows the highest instantaneous value

measured, the “MAX” symbol is displayed.

•

Maximum average (MAX AVG)

: The digital display shows the highest average value

measured, the “MAX AVG” symbol

is displayed.

Max. Hold

Average Actual

Max. Average

Field strength

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