EFA-200/300 Low Frequency
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Precision testequipment for safety in electric and magnetic fields >

qualifying facilities, or a technician who must regularly inspect facilities and/or equip- ment, we have the right test solution. manufactured in our ISO 9001-compliant production facilities The low frequency (LF)product line Like all equipment from Narda Safety Test Solutions, the low frequency product line delivers excellent measurement reliabi- lity.All of the functions were designed for straightforward and reliable testing.Precision measurements of lowfrequency fields are required mainly in the following areas: Power delivery ՕRailways Smelting furnaces ՕWelding systems Medicine...

The STD measurement technique indicates the measuredvalue directly as a percentage ofthe value from the standard.Withthe EFA-200/300, you can choosebetween six different standards,e.g.ICNIRP occupational andgeneral public The EFA-200 measuresthe magnetic fieldisotropically,and has anintegrated coil system. > SensorDirectional characteristic, selectableFrequency range (broadband), selectableFrequency range (bandpass/bandstop filters), selectableMeasuring quantity, selectableMeasurement range STD shaping, frequency rangeSTD measurement range (ICNIRP occ.)FFT frequency rangeFFT frequency...

measured values to a PC using the optical interface included in the instruments.These instruments can also be remotely controlled via this same interface. Most Narda Safety Test Solutionsmeasurement products include memory for storing data.If you need to monitor field strengths or make long-term measurements, you should consider exporting the Besides magnetic field measure-ments,you can also use the separate E-field module of the EFA-300 to make isotropic measurements of electric fields. > EFA-300 Electric Fields Module EFA-200EFA-300 Integrated coil systemIntegrated coil system (B...

extended analysis and presentation capabilities for both stored and on-line measured values. The isotropic magnetic fieldprobe has 100 cm > EFA-TS offers extended analysisand presentation capabilities :Lines and bar graphs, tables ofmeasured values and measurementreports. 2 of coil areaand is very sensitive.It must be used for standard-compliant measurement of non-homo- geneous magnetic fields for some standards. A small (3 cm diameter) snifferӔprobe is very useful for measu- rements in hard to reach places. The EFA-TS software enablesremote control via a graphical user interface (GUI).At...

The EFC-400LF software com-putes electric and magnetic fields around power lines and other power delivery equip- ment.It handles different field sources from 0 to 30 kHz with proper phase.To speed up the planning process, the EFC library includes a selection of predefined mast types.The terrain topography can be pro- cessed in grid or vector format. Measurement data (e.g.from the EFA devices) can be taken into account if so desired.The documentation complies with the DIN, VDE, ICNIRP and BImSchV standards. Magnetic field distribution is computed according to Biot- Savarts law.You can...

The ETM-1 measures constantmagnetic fields such as those found in medicine (magnetic resonance imaging or MRI), in metal production and in railway systems. The isotropic measure-ment recorder and automatic ranging simplify handling.The teslameter is equipped with an RS232 interface for remote control purposes. > Isotropic probes measure signals in all three spatial directions, making it unnecessary to go through the time-consuming process of precisely orienting the measuring device in the field. SelectSquarerootResult ETM-1 Isotropic Hall-effect sensor system for B fieldsSelectable 20, 200...

Standardized measurements mustbe isotropic , i.e.non-directional.The formula is as follows: > 2 x (t) + E > 2 y (t) + E > 2 z (t)E(t) = Electric fields are measured using sensors based on the plate-capacitor principle.Different poten- tials are generated at the plates when they are subjected to an elec- tric field.The electric field module computes the overall field from each of the sensors used for the three spatial exes. When measuring magnetic fields, coils are used as sensors .Theinduced voltages serve as a measure of the field strength.Here too, the instrument computes the overall...

➀➆➁➆➂➆➃➆➄ ➄ ➃ The instrumentdisplay shows the fundamental frequency and its harmonics (multiples of the fundamental), providing a fast overview of the quality of service.This function can also be used to determine the percentage proportions of non-harmonics. ➂ You can rapidlyassess multifrequency signals up to 32 kHz using spectrum analysis, and just read off the magnitude at each frequency. The time domain behavior of the signal recorded via the probe is automatically con- verted using a Fast Fourier Transform (FFT), which analy- zes the spectral components simultaneously.The EFA...

➆ makes it easy to read off theimportance of each spectral component. ➅ account.Suitable detectors areprovided to measure the RMS and peak values.The phase shift of the individual compo- nents is also taken into account in the result.The B or E field is measured over the entire frequency range in real time, and displayed as a percentage of the limit value.Signals with one or more frequencies are correctly evaluated, as are pulsed signals. > STD is an innovative measurement technique for making non-signal- shape-dependent field measure- ments. Interaction betweenbody and field lines ➅➆➆➆➇➈➆➉...

Setup for magnetic fieldcalibration Setup for electric fieldcalibration Test equipment and probesfrom Narda Safety Test Sol- utions are supplied in calibrated form.Traceability to national standards as per ISO/IEC 17025 is directly indicated on the calibration certificate for the majority of our products.Recalibration of instruments inthe EFA and ELT ranges as well as of low frequency probes is done in Germany, where our repair service is also located.You can send probes and instruments to us directly or via one of our sales associates. 14 >

For current information about our seminars , visit www.narda-sts.com Our 3 Level Training covers thebasic principles, measurement procedures and on site applicationtraining. >