Measuring the parameters of VE-METR-AT-002 electric and magnetic fields (VE-METR-AT-002, VE METR AT 002, VE-METR AT 002, VE-METR-AT 002)
Measurement tool for the evaluation of jobs computer operators in accordance with the Sanitary 2.2.2/2.4.1340-03 and video terminals for certification under the standard MPR and TCO 92/95. Simultaneous measurements of electric and magnetic components of the electromagnetic field in two frequency bands from 5 Hz to 2 kHz and 2 kHz up to 400kHz. Measuring instruments of parameters of the electric and magnetic fields in the VE-METR-AT-002 come with charger and pouch for transport.
Purpose and Scope
Measuring the parameters of the electric and magnetic fields in the VE-METR-AT-002 is designed to measure electric and magnetic fields.It is used to control the standards for electromagnetic safety video display terminals and to conduct comprehensive sanitary inspection of premises and workplaces.
The operating principle of the VE-METR-AT-002 is to convert the vibration of the electric and magnetic field fluctuations in voltage, frequency filtering and amplification of these oscillations and subsequent Autocompensation analysis and detection.Structurally, the meter consists of a sensor of the electric and magnetic fields that block high and low filters, to separate high and low channels, power operational amplifiers, power rms detection signal processor unit of measurement results processing, liquid crystal display for displaying the measured values and the power supply.
On working conditions and the boundary conditions of transportation of the VE-METR-AT-002 belongs to the group in accordance with GOST 22261-94 3.
Main characteristics of the ВЕ-METR-AT-002
- The frequency range from 5Hz to 400kHz;
- The frequency band in which the measured rms value of the electric field and magnetic flux density:
band of 1 - to 5 Hz to 2000 Hz;
lane 2 - from 2kHz to 400kHz;
- A range of RMS values of the electric field:
in a 1 - to 8 V / m to 100V / m;
in the band 2 - 0.8 V / m to 10V / m
- A range of RMS magnetic flux density:
one in the band - from 0.08 mT to 1mkTl;
in the band 2 - from 8nTl to 100nTl;
- The limits of permissible relative error of measurement of RMS in a 1 or 2 of the electric field excited by a video display terminal, ± 20%;
- The limits of permissible relative error of measurement of RMS in a 1 or 2 of the magnetic flux density of the magnetic field excited by the video display terminal, • ± 20%;
Operation mode setup time, no more than 1min
Time of continuous operation without recharging the meter battery, at least 15chas
Mean time to failure, at least 1000chas
The mass of the meter, no more than 450g.
Dimensions of the meter, no more (210h100h60) mm.
Power consumption, no more than 250mW.
Photos VE-METR-AT-002 (be-metp-at-002, BE-МЕТР-АТ-002)