EHP-50D Electric and Magnetic Field Analyzer
Contents
1. aN Electric and Magnetic Field Measurement EHP 50D Electric and Magnetic Field Analyzer State of the Art Technology with Simultaneous Three Axis Acquisition Low Frequency Electric and Magnetic Field Analysis up to 100 kHz Isotropic Measurement with Total Dynamic Range up to 150 dB Small Size and Optical Fiber Connection for Spot Measurements Built in FFT Spectrum Analysis Wideband Mode Built in Li ion Rechargeable Battery with Long Operating Life Interface to NBM 550 Field Meter and PC Stand Alone Operating Mode with Internal Data Logger Low Frequency Electromagnetic Fields Electrosmog is a term commonly used to describe any phenomenon or problem as sociated with artificially generated electric or magnetic fields A range of electric or electronic devices may cause an environmental risk and under certain conditions generate potentially hazardous electric or magnetic fields However special attention is focused on low frequency fields such as those generated by power transmission lines railroads and high current equipment in general large electric motors indus trial scale manufacturing plant power generators etc These low frequency fields are basically characterised by high electric and magnetic field component values in the near field region although these values decrease rapidly over distance The risk of exposure to potentially harmful low frequency fields may be present elsew2. The limit value can be shown at the Marker frequency The Data tab shows numerical results and includes Marker con trols and Save buttons The optical cable coming from the analyzer max length 40 m is easily connected to the PC using the optical to USB converter USB OC provided If a longer distance is required the optional 8053 OC optical to RS232 converter can be used for optical fiber lengths of up to 80m A user friendly graphical interface includes the commands for setting all the parameters To make them easier to un derstand the controls are grouped on five selectable tabs The spectrum measurement is continuously displayed and updated Both electric and magnetic field soectrum measure ments can be displayed on the same graph The Sweep Mode Limit and Appearance tabs are used to set all the measurement and display parameters while the Data tab with the Marker controls shows numerical results like the field strength and frequency at the marker and highest peak positions A wideband measurement is also displayed which includes all the field contributions within the spectrum shown Several different units including percentage of limit value can be selected for displaying the measurement re sults which can be saved along with user comments either as bitmap or as text files so that they can easily be imported into other software applications such as spreadsheets or word processors Following the so called precautionary pr
3. 10 kHz 100 kHz 500 Hz to 100 kHz in Stand Alone mode 1 2 of the SPAN Equal to the SPAN gt 20 dB gt 20 dB FFT Simultaneous three axis acquisition 1 measurement every 30 or 60 seconds Up to 24 hours regardeless of the logging rate a Unless otherwise indicated specifications are referred to an ambient operating temperature of 23 C and relative humidity of 50 b For each individual axis Ranges to be selected manually For the lower measurement range d DANL is frequency and SPAN dependent The specified best performance is referred to f gt 50Hz and SPAN lt 1kHz Typical value 50Hz see application note BG_0509_ELF_measurements_uncertainty for details f Referred to 100 V m and 1 uT 50 Hz 9 Measurement results acquired in stand alone mode can be transferred to PC only Calibration Temperature Error 55 Hz referred to 23 C 50 of relative humidity when applicable Humidity Error 55 Hz referred to 50 23 C Internal Battery Operating Time Recharging Time Internal EEPROM 8 x10 dB C between 20 and 23 C 13 x10 dB C between 23 and 55 C 4x10 3 dB C between 20 and 55 C 11 x 1073 dB between 10 and 50 7 x 10 dB between 10 and 50 22 x 10 dB between 50 and 90 10 x 10 dB between 50 and 90 3 7 V 5 4 Ah Li l rechargeable gt 9 hours in standard mode 24 hours in stand alone mode lt 6 hours 40 narda Safety Test So
4. NBM 550 field meter or a PC screen The PC program allows for remote control by optical fiber as well as for setting the probe and downloading measurement results acquired in Stand Alone mode or stored in the NBM 550 memory The EHP 50D provides an advanced solution for field measure ments in the 5 Hz to 100 kHz range with an unsurpassed total dynamic range of up to 150 dB and a built in spectrum analyzer function EHP 50D OPERATING MODES Stand Alone Operating Mode NBM 550 Display Operation EHP TS Remote Controlled Operation narda Safety Test Solutions an B communications company USA e Germany Italy 37 USA TEL 1 631 231 1700 FAX 1 631 231 1711 E MAIL NardaSTS L 3COM com www narda sts us aN Flectric and Magnetic Field Measurement EHP 50D Electric Field and Magnetic Flux Density Analyzer Stand Alone Operating Mode CONTINUOUS ACQUISITION WITH INTERNAL DATA LOGGER FOR UP TO 24 HOURS When long term monitoring is essential such as when mea suring magnetic fields close to high medium and low voltage transformers close to power lines or to machinery air con ditioning systems large home appliances and so on the EHP 50D can be used in stand alone mode without needing to be connected to a PC or a NBM 550 meter Once the mea surement parameters have been programmed using the PC software supplied the EHP 50D analyzer can start acquisi tion and storage of the data in stand alone mode for a
5. period of 24 hours at a sampling rate of once every 30 or 60 seconds The EHP 50D will stop automatically after 24 hours EHP TS control software includes the application EHP50 Stand Alone mode The data can then be downloaded to the PC The PC software enables you to select measurement electric or magnetic field full scale mode Highest or Wideband frequency span and sampling interval one minute or 30 seconds NBM 550 Display Operation Handheld display unit for field measurements The EHP 50D can also be easily operated through the Broadband Field Meter NBM 550 In order not to influence the field to be mea sured communication between the EHP 50D Analyzer and Narda Broadband Field Meter NBM 550 with EHP 50 D the NBM Unit is through a rugged optical fiber cable The NBM 550 supports the following settings and measurement modes e Electric or magnetic field selection 1 kV m 100 kV m 100 uT 10 mT e Span selection 100 Hz to 100 kHz e Wideband or highest peak modes e Spectrum mode e Monitor mode Actual Max Avg Min e XYZ mode wideband or highest peak Additional features include e Measurement setups e Normalized spectrum in relative to a standard e g ICNIRP Alarm with adjustable thresholds for electric and magnetic field Averaging 4 to 32 samples and Maximum Hold Unit selector for Tesla Gauss Full resolution spectrum marker Data storage on NBM 550 including spectrum data Nard
6. scale EHP50 TS Rel 1 32 07 08 2009 USB D i EDEL TO ECDECDCL z Dynamo range Oime 1108 Both electric and magnetic fields can be displayed on the same graph narda Safety Test Solutions an communications company USA Germany Italy 39 USA TEL 1 631 231 1700 FAX 1 631 231 1711 E MAIL NardaSTS L 3COM com www narda sts us Electric and Magnetic Field Measurement EHP 50D Electric Field and Magnetic Flux Density Analyzer Specifications Frequency Range Measuring Ranges Overload Dynamic Range Resolution Displayed Average Noise Level Isotropic Result Single Axis Flatness 100V m and 2ypT 5 Hz to 40 Hz 40 Hz to 100 kHz Typical 3D anisotropy Linearity SPAN Starting Frequency Stop Frequency E Field Rejection H Field Rejection Spectrum Analysis Method Acquisition Method Internal Data Logger Internal Memory NOTES 5 Hz to 100 kHz 5 mV m to 1 kV m 0 3 nT to 100 uT 500 mV m to 100 kV m 30 nT to 10 mT total measurement range 146 dB total measurement range 150 dB 200 kV m 60 Hz 20 mT 60 Hz 106 dB 110 dB 1 mV m with NBM 550 0 1 nT with NBM 550 0 1 mV m with EHP TS software 0 1 nT with EHP TS software 1 mV m in Stand Alone mode 1 nT in Stand Alone mode 5 mV m 0 3 nT 3 mV m 0 2 nT 0 8 dB 0 8 dB 0 35 dB 0 35 dB 0 54 dB 0 12 dB 0 2 dB 1 V m to 1 kV m 0 2 dB 200 nT to 10 mT 100 Hz 200 Hz 500 Hz 1 kHz 2 kHz
7. a Broadband Field Meter NBM 550 with EHP 50 D e Timer Logging Post averaging for logged data on PC RMS Mean Median Powerful PC software NBM TS for evaluation and documentation GPS receiver optional Operating languages Chinese English French German Italian Russian Spanish Turkish For more information please refer to the NBM 550 product information on the Narda website NBM TS APPLICATION SOFTWARE The NBM TS application software which is included with the Narda Broadband Field Meter NBM 550 provides functions for transferring the results that have been stored in the meter memory to a personal computer It also includes data evalua tion and measurement database management functions All the numerical value and spectrum analysis results stored in the meter can therefore be transferred to the user s PC for further evaluation and analysis stored in the database and used to prepare detailed reports 38 narda Safety Test Solutions an B communications company USA Germany Italy USA TEL 1 631 231 1700 FAX 1 631 231 1711 E MAIL NardaSTS L 3COM com www narda sts us Electric and Magnetic Field Measurement EHP 50D Electric Field and Magnetic Flux Density Analyzer EHP TS Remote Controlled Operation DISPLAYING ELECTRIC AND MAGNETIC FIELD VALUES INA SPECTRUM ANALYSIS GRAPH The EHP TS control software allows the user to control Narda analyzers such as the EHP 50C D and EHP 200 A from a PC
8. d Analyzer Set 5Hz 100kHz for Stand alone and PC use Includes EHP 50D Basic Unit 2404 01 AC DC Battery Charger 2259 92 08 it includes inte rnational AC plugs adapters Europlug CEE 7 16 UK USA Australia FO 10USB Optical Fiber Cable 10m for Opt USB Converter 2260 91 11 O E Converter USB RP 02 USB 2260 90 07 EHP 50D Optical Bridge Connector 2260 91 10 Tripod Extension 0 50m non conductive 2244 90 45 Mini Tripod bench top 650 000 151 EHP TS PC Software CD ROM including user manual 2404 93 01 Soft Carrying Case 650 000 035 User Manual Calibration Certificate FO 20 USB Cable fiber optic 20m 650 000 178 FO 40 USB Cable fiber optic 40m 650 000 182 FO 8053 80 Cable fiber optic 80m 650 000 128 8053 OC Optical to RS232 Converter 650 000 062 8053 OC PS Power Supply 650 000 179 TR 02A Wooden Tripod 1 2m with soft carrying bag 655 000 005 TT 01 Telescopic Mast 120 420 cm with carrying bag 650 000 005 Soft Carrying Case 650 000 035 Rigid Case 650 000 059 Car Adapter 650 000 058 narda Safety Test Solutions an B communications company USA Germany Italy 41 USA TEL 1 631 231 1700 FAX 1 631 231 1711 E MAIL NardaSTS L 3COM com www narda sts us
9. eature means that the EHP 50D can be used to measure only the field contribution from the se lected source such as a high voltage line excluding other nearby interfering frequencies Everything is contained in the small approx 1 dm cubic EHP 50D housing three magnet ic coils and three plate capacitors orthogonally positioned for sensing the fields a multi channel analog to digital con verter followed by a powerful DSP digital signal processor for analyzing the signal the CPU module that controls all the functions an E2PROM that stores the calibration data and the frequency and level calibration tables an optical interface to allow easy connection to external displays via optical fiber link a high capacity data logger for stand alone continuous acquisition and the control panel with the connections and the ON OFF switch APPLICATION FOCUS SIMULTANEOUS THREE AXIS MEASUREMENT The EHP product family is a unique solution providing both E and H field measurement including spectrum analysis in a single small size casing Thanks to its multi channel A D converter the EHP 50D additionally provides simultaneous three axis acquisition for unsurpassed performance even in the most complex applications Specialists in the low fre quency field who were mainly performing measurements to assess the exposure of the public to the relatively steady fields emitted by power lines are now facing new chal lenges to provide answers regarding fi
10. eld exposure in the workplace According to various standards and regulations as well as to the European directive which will be effec tive from April 2012 work environments must be assessed in order to ensure that the maximum permitted field levels recommended in the ICNIRP guidelines are never exceeded The industrial environment not only encompasses devices generating relatively steady fields but also includes weld ing machines and other devices generating very complex or pulsed fields Simultaneous three axis measurement is therefore mandatory for these applications which consult ing companies industrial health and safety departments and workplace health and safety agencies will be asked to perform more and more in future EHP 50D Operation The EHP 50D adopts the same extremely flexible operating concept found in preceding models such as Stand Alone mode remote control by PC via an optical connection and remote E and H field sensor for portable field meter The EHP 50D as well as its different operating modes therefore appears to be the same as the EHP 50C but it has a com pletely new heart beating within it to give the highest level of performance even in the most complex situations The EHP 50D was designed to provide all the performance ca pacity and functions needed and is shown as the best tool for measuring low frequency electric and magnetic fields and displaying recording and analyzing their values on the
11. here e g offices near large machinery homes close to a high voltage power line etc As several studies around the world have confirmed the potential risks from irradiation with strong low frequency electric or magnetic fields electrosmog and its possible consequences are under close consideration by IEC CENELEC ICNIRP and many other national organisations New standards are being prepared and all reasonable protec tion measures are being taken to preserve the health of workers and citizens all over the world 36 narda Safety Test Solutions an B communications company USA Germany Italy USA TEL 1 631 231 1700 FAX 1 631 231 1711 E MAIL NardaSTS L 3COM com www narda sts us Electric and Magnetic Field Measurement LN EHP 50D Electric Field and Magnetic Flux Density Analyzer EHP 50D ELECTRIC AND MAGNETIC ISOTROPIC FIELD ANALYZER The EHP 50D is not simply an upgrade of the EHP 50C but represents a real leap in technology made possible by the availability of even more sophisticated components that can provide high level performance while keeping the physical dimensions and intrinsic noise level small The EHP 50D gives users the choice of three measurement modes Wideband which measures the contribution of all the frequency components in the selected frequency span Highest which measures only the highest level found within the span and Spectrum which includes marker functions The spectrum analysis f
12. inciple many coun tries have adopted their own reference limits Besides having the ICNIRP limits already included EHP TS also allows the user to create and save customized limits that may reflect lo cal regulations as well as user specific requirements All the values of the selected limit are always included for reference in any omp or txt file saved The availability of lightweight devices equipped with the Windows operating system such as UMPC and similar devices makes EHP TS software the ide al solution for performing accurate in field spectrum analysis with the minimum of effort using lightweight equipment a Earlier versions of the EHP50 analyzer EHP 50 EHP 50A EHP 50B must be hardware updated to EHP 50C to operate in conjunction with EHP TS control software For information contact your Narda distributor FHP50 TS Rel 1 37 07 08 7009 USB Newt Pesk em ciotowd Oz Previous Peak Save as text Dynamic range Ome 1108 Ext The limit value can be shown at the Marker frequency The Data tab shows numerical results and includes Marker controls and Save buttons Z Lima EHP50 TS Rel 1 32 07 08 2009 USB ngene iror J ou Mo it Dynamic range Ome One Vistod TH The spectrum can be shown as a percentage of the selected limit The Mode tab allows selection of differ ent acquisition modes as well as the range units and linear or logarithmic frequency
13. lutions an B communications company USA e Germany Italy USA TEL 1 631 231 1700 FAX 1 631 231 1711 E MAIL NardaSTS L 3COM com www narda sts us Electric and Magnetic Field Measurement EHP 50D Electric Field and Magnetic Flux Density Analyzer External DC Supply 10 to 15 VDC approx 500 mA Optical Fiber Connection Up to 40 m USB OC Up to 80 m 8053 OC Firmware Update Via the USB or RS232 optical link Self Test Automatic at Power On Operating Temperature 20 to 55 C Operating Relative Humidity 0 to 95 without condensation Charging Temperature 0 to 40 C Storage Temperature 30 to 75 C Tripod Support Threaded insert 1 4 Dimensions 92x 92x 109mm Weight 550g Recommended Calibration Interval 24 months Ordering Information EHP 50D Ordering Number EHP 50D Electric and Magnetic Field Analyzer Set 5Hz 100kHz for NBM 550 Includes EHP 50D Basic Unit 2404 01 AC DC Battery Charger 2259 92 08 it includes international AC plugs adapters Europlug CEE 7 16 UK USA Australia FO 10USB Optical Fiber Cable 10m for Opt USB Converter 2260 91 11 O E Converter USB RP 02 USB 2260 90 07 2404 101 Optical Bridge Connector 2260 91 10 Tripod Extension 0 50m non conductive 2244 90 45 EHP TS PC Software CD ROM including user manual 2404 93 01 Foam Inserts for fitting EHP 50D into the NBM 550 hard case 2404 90 01 Calibration Certificate EHP 50D Electric and Magnetic Fiel
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