PCE Instruments PCE-EM 29 User manual

ELECTROSMOG METER
INSTRUCTION MANUAL
Z
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AVGMAX
2

CONTENTS
Title Page
1. SAFETY INFORMATION .............................................................. 1
2. INTRODUCTION........................................................................... 2
2-1 Fundamentals................................................................................ 2
2-2 Application..................................................................................... 3
2-3 Features........................................................................................ 4
3. SPECIFICATIONS......................................................................... 5
3-1 General Specifications .................................................................. 5
3-2 Electrical Specifications................................................................. 6
4. OPERATION ................................................................................. 7
4-1 Front panel controls description.................................................... 7
4-2 LCD display description ................................................................ 9
4-3 Use E-field sensor........................................................................11
4-4 Explanatory notes ........................................................................11
4-5 Setting the meter......................................................................... 14
4-6 Making measurements................................................................ 18
4-7 Manual data memory storing individual measured values .......... 19
4-8 Setting current data and time...................................................... 21
5. MEASUREMENT PREPARATION.............................................. 21
5-1 Battery Loading........................................................................... 21
5-2 Battery Replacement................................................................... 21

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1. SAFETY INFORMATION
CAUTION
•Before making a measurement, check if the low battery symbol
( +) is shown on the display as soon as the meter is switched on.
Change the battery if the symbol is displayed.
•In the case of prolonged storage, it is preferable to remove the battery
from the meter.
•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.

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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).

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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 wavelength, then
we are usually in the near-field. If the distance is more than three
wave length, 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.
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.

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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, the maximum
value measured or the average value. 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.
Easy & safety to use.

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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, 0.1µA/m, 0.1µW/m2, 0.001µW/cm2
•Setting time : Typically 1s (0 to 90% of measurement value).
•Display refresh rate : Typically 0.5 seconds
•Display type : Liquid-crystal (LCD), 4 digit.
•Audible alarm : Buzzer.
•Units : mV/m, V/m, µA/m, mA/m, µW/m2, mW/m2, W/m2, µW/cm2,
mW/cm2
•Display value : Instantaneous measured value, maximum value,
average 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.
•Dry batteries : 9V NEDA 1604/1604A (Alkaline battery)
•Battery life : > 3 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, battery, Carrying case.

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3-2 Electrical Specifications
Unless otherwise stated, the following specifications 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℃
•Relative air humidity : 25% to 75%
Sensor type : Electrical field (E)
Frequency range : 10MHz to 8GHz
Specified measurement range :
•CW signal (f > 50MHz) : 20mV/m to 108.0V/m ,
53µA/m to 286.4mA/m ,
1µW/m2to 30.93W/m2,
0µW/cm2to 3.093mW/cm2
Dynamic range : Typically 75dB
Absolute error at 1 V/m and 50 MHz : ±1.0dB
Frequency response :
•Sensor taking into account the typical CAL factor :
±1.0dB (50MHz to 1.9GHz)
±2.4dB (1.9GHz to 8GHz)
•Isotropy deviation : Typically ±1.0dB (f>50MHz)
•Overload limit : 10.61mW/cm2(200V/m)
•Thermal response (0 to 50℃): ±0.5dB

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4. OPERATION
4-1 Front panel controls description
Z
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AVGMAX
2
(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” →“Average” →“Max. average”.
(5). key :
cPress this key to change units selector : “mV/m or V/m” →“µA/m or
mA/m” →“µW/m2, mW/m2or W/m2”→“µW/cm2or mW/cm2”
dPress and hold this key while turning the meter on to disable the
audible sound, the “ ” symbol will disappear.

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(6). key :
cPress this key to switch to display date and time.
dPress and hold this key while turning the meter on to the alarm
setting mode, press key two times to exit this mode.
3Press 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 :
cPress this key to change sensor axis selector : “All axis” →“X axis”
→“Y axis” →“Z axis”.
dPress and hold this key while turning the meter on to switch the
device to the calibration factor setting mode, press “SET” key to exit
this mode.
(9). key :
cPress this key one time to store one data set to memory.
dPress 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 :
cPress this key to switch to the manual data reading mode, press this
key again to exit this mode.
dPress and hold this key while turning the meter on to disable the auto
power off function, the “ ” symbol will disappear.
(11). STWX 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.