Smogtec esi 24, User Manual, Page: 4 / 7

Proffsmagasinet
For precise capture of high-frequency radiation (radio waves and microwaves)
To change to the
high-resolution HF mode , briefly press the Select button once .
Now the display enters HF mode.
LEDs 1 and 2 are on. All 15 LEDs now indicate HF radiation.
LED 1 (bottom left) shows the lowest radiation level and LED 15 (top right) the highest.
Table for high-resolution HF mode
(with increased sensitivity)
Values for power flux density / radiation intensity in µW/m² (= microwatts per square metre)
Measurement range 50 MHz - 8 GHz,
unit is optimised for frequencies around 2.5 GHz
HF (High-frequency)
radio waves &
microwaves
Radiation intensity in
µW/m²*
(~ 900 MHz)
Radiation intensity in
µW/m²*
(~ 1.9 GHz)
Radiation intensity in
µW/m²*
(~ 2.5 GHz)
Radiation intensity
in µW/m²*
(~ 5.0 GHz)
LED 1+2 > 0.06 > 0.25 > 0.6 > 2.5
LED 3 > 0.25 > 1.0 > 2.5 > 10
LED 4 > 1.0 > 4.2 > 10 > 40
LED 5 > 2.2 > 8.8 > 20 > 80
LED 6 > 4.2 > 17.0 > 40 > 150
LED 7 > 5.5 > 22.0 > 50 > 200
LED 8 > 8.5 > 33.0 > 75 > 300
LED 9 > 11.0 > 43.0 > 100 > 380
LED 10 > 27.0 > 105 > 250 > 950
LED 11 > 52.0 > 205 > 500 > 1850
LED 12 > 78.0 > 310 > 750 > 2800
LED 13 > 110 > 435 > 1000 > 3900
LED 14 > 140 > 550 > 1250 > 5000
LED 15 > 165 > 650 > 1500 > 5900
*
All values are peak values. The readings of individual units may vary slightly from the values given in the tables owing to tolerances in individual
electronic components and possibly due to temperature fluctuations. The units are calibrated using 50Hz alternating fields at an ambient temperature of 20°C
and air humidity of 45%.
• Notes for measurements made
in the HF high-resolution mode
HF sources that the esi 24 can detect: Wireless telephones, WLAN, Wi-Fi, mobile radio transmitters, high-voltage
lines, electrical installations, baby monitors, microwave ovens, mobile telephones, etc.
Take care to measure in every direction in the room. It is also important that you turn about the axis of your own body
to avoid the shadows it creates. The human body is an absorber of microwaves and therefore creates a radio shadow
in which considerably lower levels of radiation are detected. Take measurements at various points in the room, as
high-frequency radiation can be distributed very irregularly within a given space. It is not uncommon to find local
variations of a factor of between 1 and 10 at points just 50 cm apart. As a precaution, take measurements at several
different times of day.
The
HF measuring antenna is quasi-isotropic and thus produces an almost triaxial reading of high-frequency
radiation.
The values shown in the table are peak values. The values displayed by the unit are peak values or, more
precisely, average values obtained from the measured peak values.
Remember:
To ensure best operation of the esi 24 Indicator, hold the unit by the bottom end with your arm stretched
away from your body.