RS PRO IM-195 Manuel utilisateur

Instruction Manual

IM-195

3-Axis RF Field Strength Meter

3-Axis RF Field Strength Meter/ English

2017-10-25 V002 EN-1

Contents

Introduction EN-2

Features EN-3

General Specification EN-3

Instrument Description EN-4

LCD description EN-5

Safety EN-6

Operation EN-6

Battery Replacement EN-15

Limited Warranty EN-15

Contact information EN-16

3-Axis RF Field Strength Meter/ English

EN-2 2017-10-25 V002

Introduction:

IM-195 is designed for measuring Radio Frequency (RF)

electromagnetic field strength and the monitor range is from

50MHz to 3.5GHz with triple axis X, Y and Z isotropic sensors.

It is used to indicate electromagnetic pollution generated by

cellular phone tower antenna, wireless internet, microwave

ovens, cellular phones and cordless phones, etc.

With its simple method of operation this meter will measure

electromagnetic pollution generated artificially. Wherever there

is a voltage or a current, electric (E) and magnetic (H) fields

arise. All types of radio broadcasting and TV transmitters

produce electromagnetic fields. They also arise in industry,

business and the home.

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 (mV/m). This meter measures electric field strength

directly.

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). In far field

situations, one can calculate the magnetic field from the electric

field value. This meter can display the calculated Magnetic field

strength.

Power density (S):

Power per unit area perpendicular to the direction of

propagation usually expressed in units of Watts per square

meter (W/m2) or, for convenience, units such as mili/Watts per

square centimeter (mW/cm2).

The characteristic of electromagnetic fields:

3-Axis RF Field Strength Meter/ English

2017-10-25 V002 EN-3

Electromagnetic fields propagate as waves and travel at the

speed of light (C). The wavelength is proportional to the

frequency:

(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 near field conditions, the magnetic

field value cannot be calculated from the electric field value.

This meter is designed for reliable far field measurements

only.

Features:

The auto-ranging units of measurement and the

measurement types have been selected to expressed in

units of electrical and magnetic field strength and power

density.

Non-directional (isotropic) measurement with three-axis

measurement sensor.

Selectable display functions of the instantaneous value, the

maximum value measured or the average value.

Configurable alarm threshold function.

This meter is capable of recording 200 measurements.

Low battery and over load indications

General specification:

Display:

LCD display with maximum reading

of 3999.

Sampling Rate:

2.5 times per second.

Sensor:

Triple axis.

Frequency Range:

50MHz to 3.5GHz.

Accuracy:

±1 dB at 2.45GHz.

Measurement Units:

mV/m, V/m, µA/m or mA/m,

µW/m2, mW/m2, µW/cm2.

3-Axis RF Field Strength Meter/ English

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Specified measurement range:

1. CW signal (f >50MHz) :

38mV/m to 11.00V/m, 53.0uA/m ~ 29.28mA/m ,

0.01uW/m2 ~ 323.3mW/m², 0.001uW/cm2~

32.33uW/cm2

2. Dynamic range: Typically 75dB.

3. Absolute error at 1V/m and 2.45GHz: ±1.0 dB.

Frequency response :

1. Sensor taking into account the typical CAL factor :

±2.4dB (50 MHz to 1.9 GHz).

±1.0 dB (1.9 GHz to 3.5GHz).

2. Isotropy deviation: Typically ±1.0 dB (2.45GHz).

3. Overload limit: 32.33uW/cm2 (11 V/m) per axis.

4. Overload limit (0 to 50°C): ±0.2dB.

Power Supply:

9V NEDA 1604, IEC 6F22,

JIS 006 P. battery x 1pc.

Battery life:

About 15 hours

Dimension:

55mm x 38mmx 195mm (LxWXH)

Weight:

Approx. 200g with battery installed

Accessories:

Manual, 9V battery and carrying bag.

Instrument description:

1. RF sensor (Triple-axis).

2. LCD.

3. MAX/ AVG/ ()

4. Record / Time/ ().

5. Power on/off.

6. Unit/ Enter.

7. Hold/ ALARM / ().

8. Backlight/ Set

9. XYZ/ MEM ().

10. Protection holster.

11. Tripod mounting screw.

12. Battery cover.

3-Axis RF Field Strength Meter/ English

2017-10-25 V002 EN-5

LCD description:

1. Primary display

2. Hold

3. Analogue bar graph

4. MAX

5. AVG

6. Low battery

7. x1x10x100

8. X.Y.Z

9. ALARM

10. mV/m, V/m(E)

11. µA/m, mA/m (H)

12. µW/m, µW/cm2 unit

13. E symbol

14. Auto power off

15. Time unit

16. MEM reading

17. SET

18. REC

19. CAL

20. Secondary Display

21. Buzzer

22. Decimal point

3-Axis RF Field Strength Meter/ English

EN-6 2017-10-25 V002

Safety:

CAUTION

Be extremely careful for the following

conditions while measuring.

Do not operate the meter in the environment with explosive

gas (material), combustible gas (material) steam or filled

with dust.

In order to avoid reading incorrect data, please replace

the battery immediately when the symbol appears on

the LCD.

In order to avoid the damage caused by contamination or

static electricity, do not touch the circuit board before you

take any adequate action.

Operating Environment is for indoors use only. The meter

was designed for being used in an environment of pollution

degree 2.

Operation Altitude: Up to 2000M.

Operating Temperature & Humidity: 0°C ~ 50°C, 25%~

75%RH.

Storage Temperature & Humidity: -10°C ~ 60°C, 0%~

80%RH.

Operation:

1. Press to turn the power on or off.

2. Turn the meter on; press repeatedly to select the

displayed value of XYZ (all axes).

3. Position the sensor of the meter to RF strength source

and hold the meter steady during the measurement.

4. The LCD displays the measured value.

5. Press repeatedly to select the desired unit to be

shown on the LCD (we recommend using mV/m).

6. After the testing, turn the meter off.

3-Axis RF Field Strength Meter/ English

2017-10-25 V002 EN-7

Important:

If the sensor is moved quickly, excessive field strength values

could be displayed. This effect is caused by electrostatic

charges.

Short-term measurements

Use either the “instantaneous” or the “Max instantaneous”

mode, if the characteristics and orientation of the field are

unknown when entering an area exposed to electromagnetic

radiation.

Hold the meter at arm’s length.

Make several measurements at various locations around your

work place or the interested areas as described above. This is

particularly important if the field conditions are unknown and

possibly dangerous.

Pay special attention to measuring the vicinity of possible

radiation sources. Apart from active sources, those

components connected to a source may also act as radiators.

For example, the cables used in diathermy equipment may

also radiate electromagnetic energy. Note that metallic objects

within the field may locally concentrate or amplify the field

from a distant source.

Long-term exposure measurements

Place the meter between yourself and the suspected source

of radiation. Make measurements at those points where parts

of your body are nearest to the source of radiation.

Note: Use the Average or Max average modes only when the

instantaneous measurement values are fluctuating greatly.

You may fix the meter to a wooden or plastic tripod.

HOLD

Freezes the reading present on the LCD at the moment

when is pressed and LCD shows HOLD. Press

again to disable data hold.

3-Axis RF Field Strength Meter/ English

EN-8 2017-10-25 V002

UNIT

Press repeatedly to change the units of mV/m (V/m),

µA/m (mA/m), µW/m2(mW/m2) or µW/cm2.

Electric field strength (V/m)

Computed magnetic field strength (mA/m)

Computed power density (mW/m2)

Computed power density (μW/cm2)

MAX / AVG

Press repeatedly to select the displayed reading from

MAX to AVG to MAX/AVG and back to MAX.

Press and hold for more than 3 seconds to disable this

function.

The maximum averaging storage is up to 99 minutes and 99

seconds. After this period of time, updating will stop

automatically and the LCD displays .

The following graph shows of Instantaneous (actual), MAX

(hold), AVG and MAX/AVG:

3-Axis RF Field Strength Meter/ English

2017-10-25 V002 EN-9

REC

Press to save the current measured result in meter’s

memory; the LCD shows REC with a number 001 to 200.

The meter records up to 200 data sets.

Over load indication shows:

XYZ

Press repeatedly to select the sensor axis:

All axis XYZ →X axis →Y axis →Z axis

Backlit

Press to turn the backlit on. Press this button to turn the

backlit off. To save the battery life, the meter automatically

turns the backlit off after 30 seconds.

ALAM (alarm)

Press and hold and together to switch the alarm

function on, the display shows ALAM. To switch the alarm

function off, repeat this process.

When the alarm sounds, the display shows .

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