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Field Finder

Field Finder

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© Enviromentor AB 1998 reg. 98.011/Eng

The electric fields from a piece of apparatus are
influenced by the design of the instrument. Field
Finder is intended to give simple, general measu-
rements. If you want to carry out a more precise
analysis of the electrical environment, you should
use an instrument that has been designed in accor-
dance with MPR II. Field Finder does not satisfy
the requirements of MPR II, but the instrument
has been calibrated to produce the same results
when measuring electric fields at a distance of
50 cm from a VDU. Some measurement objects
may emit alternating fields with frequencies
beyond that which Field Finder can manage.

Notes

Report form for measuring magnetic fields around an object

Magnetic field, 30 Hz–2 kHz

Measuring equipment: Field Finder

Object:

Model:

Address:

Room:

Measured by:

Date:

30 cm

50 cm

Comments

0

°

µ

T

µ

T

90

°

µ

T

µ

T

180

°

µ

T

µ

T

270

°

µ

T

µ

T

Background field

µ

T

µ

T

R

eport 9

8:3, Field Finder © EnviroM

entor AB, G

othenburg, S

weden

Содержание EnviroMentor Field Finder

Страница 1: ...lmers Institute of Technology in G teborg EnviroMentor AB is wholly owned by Radians Innova AB a company which in turn is owned by two of Sweden s most powerful financial institutions This combination...

Страница 2: ...fields 7 3 3 Audible signal 7 3 4 Threshold level 8 3 5 Changing the batteries 8 4 Measurement examples 9 4 1 Electric fields 9 4 2 Magnetic fields 10 4 3 Example of report form for measuring magnetic...

Страница 3: ...nstrument emits an audible signal that is pro portional to the field strength measured Field Finder measures the electric field in the direction of the measurement surface on the instrument s front sh...

Страница 4: ...r does not satisfy the requirements of MPR II but the instrument has been calibrated to produce the same results when measuring electric fields at a distance of 50 cm from a VDU Some measurement objec...

Страница 5: ...icroprocessor 10 bit A D converter three dimensional sensor CE assurance Our product satisfies the demands of the Low Voltage and EMC directive as well as the follo wing EMC standards EN 50 081 1 1992...

Страница 6: ...eability Traceability means that it should be possible to relate a measurement result to national or inter national standards via an unbroken chain of comparisons Report form B for measuring electric...

Страница 7: ...e influenced by objects in the vicinity of the instrument as well as by the person holding it The instrument has to be held still in order to achieve a stable value When me asuring electric fields fro...

Страница 8: ...the old batte ries and install new ones 2 x 1 5 V LR6 8 Report forms On the following pages you will find report form templates for measuring electric and magnetic fields Copy the templates fill them...

Страница 9: ...e at a time and measure the electric fields in the directions 0 90 180 and 270 at distances of 30 cm and 50 cm from the outer edge of the piece of apparatus in question see figure or in the direction...

Страница 10: ...tentials If two plates made of electri cally conductive material are connected to a voltage source one of the plates will have a positive charge while the other will have a negative charge A vol tage...

Страница 11: ...he conductor Magnetic fields are usually depicted with the aid of field lines The strength of the magnetic field is constant along the conductor in closed paths around the live conductor In the event...

Страница 12: ...asuring equipment Field Finder Object Model Address Room Measured by Date 30 cm 50 cm Comments 0 V m V m 90 V m V m 180 V m V m 270 V m V m Background field V m V m Notes Report 98 2 Field Finder Envi...

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