"Absolute error of my measurement" service allows evaluating measurement precision considering measurement uncertainty (or error) in absolute value. It is important in case you are making measurements at the range edge, when the value of error contributes into the value displayed by the device.
To get the range of values it’s enough to enter the evaluation of the value under measurement into Value box and to see the range of possible values including all of the standard errors.
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A portable device designed for safe measurement of electromagnetic field characteristics by isotropic method. The device is equipped with 3-channel sensor which allows measuring simultaneously on three axes: X, Y, Z. The device can be used to measure the radiation produced by wireless communications (CW, CDMA, DECT, GSM), radio stations, wireless Wi-Fi, microwaves, TVs and monitors, hidden signal sources and other sources of high-frequency electromagnetic radiation.
Measurement display value: Instantaneous measured value, maximum value or average value since power-on
Measurement alarm function: Adjustable threshold with ON/OFF
Measurement calibration factor CAL: Adjustable
Manual data memory and read storage: 99 sets ( only recall by meter )
Battery life: >15 hours
Dimensions: 60x60x237mm / 2.4x2.4x9.3in
Weight: 200g / 0.4lb
Electromagnetic field measurement
How to measure the electromagnetic environment correctly? What instruments should be used for this?
Which electromagnetic radiation is ATT-2592 portable electromagnetic field tester designed for?
Electromagnetic field, especially in offices, constantly changes. Somebody’s radiophone or cell phone starts ringing or there is any other electromagnetic radiation source (for example in the next room) etc. The electric field intensity of "natural" field, when the devices under test are switched off, is from a few units to several hundreds of mV/m. Exactly these readings will be considered further on the basis for the comparison to those of the electromagnetic fields of the switched on devices under measurement.
To solve this measurement problem there were some measurement experiences made in the office. AKTAKOM ATT-2592 tester was used as a measuring device.
It should be noted that AKTAKOM ATT-2592 tester measures at frequency starting from 50MHz to 3.2GHz and 8GHz, respectively. Measurements, when a device under test is ON, should be made in the fixation mode of the electric field intensity value.
As electromagnetic sources there were the following devices used: cell phone, Wi-Fi router, a microwave oven, a personal computer with Wi-Fi, Yota WiMax device and household fan.
Below are the test results:
Electric field intensity measurement of the cell phone. The maximum value is 24.52V/m
Electric field intensity measurement of the Wi-Fi router. The maximum value is 15.90V/m
Electric field intensity measurement of Yota WiMax. The maximum value is 15.68V/m
Electric field intensity measurement of the microwave oven. The maximum value is 6.725V/m
Electric field intensity measurement of the PC with Wi-Fi. The maximum value is 1.122V/m
Electric field intensity measurement of the PC with switched off Wi-Fi ("natural" field). The maximum value is 9.3mV/m
Electric field intensity measurement of the switched off fan ("natural" field). The maximum value is 314.6mV/m
Electric field intensity measurement of the switched on fan. The maximum value is 325.4mV/m
These examples show which of the devices under test are the most harmful in terms of radiated high-frequency electromagnetic field. Please note that the working fan and the PC without switched on radiating devices are not objects of measurement for ATT-2592 as they operate at the frequency of 50Hz that is a million times less than the stated measurement range. ATT-2592 electromagnetic field tester is considered unique, any user can measure the electromagnetic environment. Sometimes you can put the radiation source to another place or just turn it around and this can be enough to significantly change the situation. For example, if your cell phone is ringing its built-in antenna should point aside and the phone itself should be held at some distance from your head. Even some 20–30cm makes a significant influence.
The cell phone antenna is pointed at the sensor. The phone is very close to the sensor. The maximum value of the electric field intensity is 24.52V/m
The phone antenna is not pointed at the sensor. The phone is very close to the sensor. The maximum value of the electric field intensity is 11.44V/m
The phone antenna is not pointed at the sensor. The phone is at 30 cm distance from the sensor. The maximum value of the electric field intensity is 10.65V/m
Thus, just by turning the radiation source (the phone) around and removing it at only 30 cm distance from the sensor we have reduced the value of the electric field intensity in a particular location by almost 2.5 times!
It should be noted that the values in the table are approximate, because they depend on many factors, such as the model of the device under test, operation mode, etc. But they rather clearly show the potential danger of radiation sources.
The manual of AKTAKOM ATT-2592 electromagnetic field tester includes tables (of sanitary standards and norms). Comparing the device readings to the values in the table you can judge how long it is safe to stay in the place where such measurements are taken.
Maximum permissible levels of electric intensity and energy fluence rate depending on the exposure time.
Alta frecuencia (RF) de onda electromagnética de intensidad de campo medida.
Teléfono móvil de la estación base de antena ratenna radiación densidad de potencia medida.
Aplicaciones de comunicación inalámbrica (CW, TDMA, GSM, DECT).
LAN inalámbrica (Wi-Fi) de detección, instalación.
Spy cámara, buscador de error inalámbrica.
Móvil / Inalámbrico nivel radiación de los teléfonos de seguridad.
Horno de microondas de detección de fugas.
Entorno Personal de estar EMF seguridad.
Medición de potencia RF para fransmitters.
Rango de frecuencia 50MHz - 3.5GHz.
Para mediciones isotrópicas de los campos electromagnéticos.
No direccional (isotrópica) mediciones con sonda de medida de tres canales
Alto rango dinámico debido al procesamiento digital de los resultados de los tres canales
Umbral de alarma programable y función de memoria.
Fácil de usar.
Unidades de medida: mV / m, V / m, mA / m, mA / m, mW / m², mW / m², mW / cm ².
Manual de memoria de datos y leer almacenamiento: 99 juegos (sólo recordar por metro).