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ETS-Lindgren Inc. reserves the right to make changes to any product described
herein in order to improve function, design, or for any other reason. Nothing
contained herein shall constitute ETS-Lindgren Inc. assuming any liability
whatsoever arising out of the application or use of any product or circuit
described herein. ETS-Lindgren Inc. does not convey any license under its
patent rights or the rights of others.

© Copyright 1994–2016 by ETS-Lindgren Inc. All Rights Reserved. No part
of this document may be copied by any means without written permission
from ETS-Lindgren Inc.

Trademarks used in this document: The

ETS-Lindgren

logo and

Probeview II

are

trademarks of ETS-Lindgren Inc.

Revision Record | MANUAL,HI-3638 | Part #H-600062, Rev. H

Revision

Description

Date

Initial Release

July, 1994

A

Added CE

October, 1997

B

Added

Error Codes

January, 1998

C

Updated area code

February, 2000

D

Rebrand

March, 2009

E

Updated electric field information,

Replacement and Optional Parts

,

Specifications

,

Operating Protocols

February, 2011

F

Added

Operating Protocols

as

appendix

April, 2011

G

Updated

Replacement and

Optional Parts

April, 2013

H

Updated

Calibration

and format

March, 2016

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Содержание HI-3638

Страница 1: ...HI 3638 ELF VLF Electric Field Meter User Manual ...

Страница 2: ...rved No part of this document may be copied by any means without written permission from ETS Lindgren Inc Trademarks used in this document The ETS Lindgren logo and Probeview II are trademarks of ETS Lindgren Inc Revision Record MANUAL HI 3638 Part H 600062 Rev H Revision Description Date Initial Release July 1994 A Added CE October 1997 B Added Error Codes January 1998 C Updated area code Februar...

Страница 3: ... 11 3 0 Specifications 13 HI 3638 Typical Frequency Response 15 4 0 HI 3638 Controls and Connectors 17 Transmit Receive 17 ELF OFF VLF 18 Charge 18 Ground 18 Output 18 5 0 Battery Charger 19 Setting the Voltage 19 Charging the Battery 20 Battery Tips 21 Operating Temperature 21 Charging 21 6 0 Application 23 Meter 23 Sensor Theory 23 7 0 Power Frequency Fields 25 8 0 Guidelines for EMF Exposure 29...

Страница 4: ... com Appendix A Warranty 31 Appendix B Operating Protocols 33 Communication Protocol 33 Information Transfer Protocol 33 Probe Commands 34 Error Codes 35 Appendix C References 37 Appendix D EC Declaration of Conformity 41 ...

Страница 5: ... gives proper procedures Note See the ETS Lindgren Product Information Bulletin for safety regulatory and other product marking information Safety Information Refer to Manual When product is marked with this symbol see the instruction manual for additional information If the instruction manual has been misplaced download it from www ets lindgren com or contact ETS Lindgren Customer Service High Vo...

Страница 6: ...Electrical and Electronic Equipment WEEE Directive European Union At end of useful life this product should be deposited at an appropriate waste disposal facility for recycling and disposal Do not dispose of with household waste Recyclable Products This product includes rechargeable batteries At end of useful life please recycle the used batteries or dispose of them safely and properly Many cities...

Страница 7: ...of electric fields from video display terminals Tripod not included The HI 3638 is useful in low field intensity measurements such as video display terminals VDTs and computer monitors as well as higher field environments such as power transmission lines and industrial locations The HI 4416 Digital Readout Control Unit is included with the HI 3638 and provides an optically isolated full control di...

Страница 8: ...dgren Product Information Bulletin included with your shipment for the following Warranty information Safety regulatory and other product marking information Steps to receive your shipment Steps to return a component for service ETS Lindgren calibration service ETS Lindgren contact information ...

Страница 9: ...ur shipment Maintenance of the HI 3638 is limited to external components such as cables or connectors Warranty may be void if the enclosure is opened If you have any questions concerning maintenance contact ETS Lindgren Customer Service Annual Calibration See the Product Information Bulletin included with your shipment for information on ETS Lindgren calibration services WARRANTY ...

Страница 10: ... following guidelines Before performing any maintenance disconnect the fiber optic cables from the unit and turn off power When disconnecting fiber optic cables apply the included dust caps to the ends to maintain their integrity Before connecting fiber optic cables clean the connector tips and in line connectors Before attaching in line connectors clean them with moisture free compressed air Fail...

Страница 11: ...H 491069 Universal 12 VDC Trickle Charger 110 240 V H 491063 06 Cable Fiber Optic Glass Dual 2 Meter H 491106 02 HI 3638 Carrying Case H 491100 Tripod H 491009 Fiber Optic Modem HI 4413P Fiber Option to USB Converter USB interface HI 4413USB Probeview II Software H 491255 Service Procedures For the steps to return a system or system component to ETS Lindgren for service see the Product Information...

Страница 12: ...12 Maintenance www ets lindgren com This page intentionally left blank ...

Страница 13: ...F Frequency Range 5 Hz 2000 Hz Bandwidth 3dB 2 kHz 400 kHz Bandwidth 3dB Filter Attenuation 80 dB dec below 5 Hz 40 db dec above 2 kHz 80 dB dec below 2 kHz 40 dB dec above 400 kHz Bands I and II Measuring Ranges 4 40 V m 0 4 4 40 kV m F S Measuring Limit 1 V m Linearity 0 5 dB 1 of Full Scale Calibration Accuracy 0 75 dB Calibration Points Display Resolution 3 1 2 Digit LCD 0 01 V m Waveform Out ...

Страница 14: ...ron Graded Index Multimode Readout HI 4416 Digital Readout Control Unit Probe Mount 1 4 20 UNC tapped hole internal thread Two 90 degrees apart Battery Battery Type 12 Volt DC 1400 mAh Nickel Cadmium NiCd Current Consumption 35 mA Battery Life 40 Hours Nominal Battery Charger 110 240 VAC 16 Hour Battery Charger Jack 2 5 mm 0 1 in Phone Jack Physical Specifications Height 102 mm 4 in Diameter 305 m...

Страница 15: ...www ets lindgren com Specifications 15 HI 3638 Typical Frequency Response Measured at 20 V m ...

Страница 16: ...16 Specifications www ets lindgren com This page intentionally left blank ...

Страница 17: ...en Product Information Bulletin included with your shipment Following is a description of the controls and connectors for the HI 3638 ELF VLF Electric Field Meter Transmit Receive Plug the fiber optic cable from the HI 4416 Digital Readout Control Unit into the TRANSMIT connector and RECEIVE connector on the HI 3638 matching white to white for transmit and yellow to yellow for receive ...

Страница 18: ...te which band is selected In the ELF or VLF position the HI 3638 is powered by the internal 12 VDC nickel cadminum NiCd battery To prolong battery life set the switch to OFF when not in use Charge A 16 hour trickle battery charger is supplied with the HI 3638 The battery charger can charge the HI 3638 or the HI 4416 Slight overcharging up to 24 hours will not harm the battery however charging the ...

Страница 19: ...ow on the power entry module to verify that the battery charger is set to the proper voltage for your AC power source To change the voltage setting 1 Disconnect the battery charger from power 2 Use a small screwdriver to loosen and remove the fuse assembly from the power entry module 3 Slide the small board located on the back of the fuse assembly from right to left to remove it ...

Страница 20: ...of the battery prior to making any measurements Never attempt to charge a non rechargeable battery 1 Verify that the battery charger is set to the proper voltage for your AC power source See Voltage Setting on page 19 for more information 2 Connect the battery charger to a power source 3 Switch the HI 3638 to OFF 4 Insert the charging plug into the CHARGE connector on the HI 3638 When the charging...

Страница 21: ...ies are rated for operation in temperatures from 20 C to 65 C 4 F to 140 F operating the HI 3638 in extreme temperatures significantly reduces operating time The optimum operating temperature range is 20 C to 30 C 68 F to 86 F CHARGING The HI 3638 battery does not require periodic deep discharges to reverse the capacity depleting memory effect caused by repeated shallow discharges however undercha...

Страница 22: ...22 Battery Charger www ets lindgren com This page intentionally left blank ...

Страница 23: ...rted to a displayable value and sent through fiber optic cable to the HI 4416 Digital Readout Control Unit Sensor Theory Electric fields are measured through the employment of a displacement current sensor A displacement current sensor operates on the principle that two parallel conductive flat plate electrodes when electrically connected together will exhibit a displacement current which flows be...

Страница 24: ...of the field causing it permitting calibration A circular sensing plate surrounded by a guard ring is used in the HI 3638 and the displacement current developed between this 100 mm diameter disk and a closely spaced 300 mm circular disk electrode is sensed and converted to equivalent electric field strength Because the larger electrode is used as a reference in the measurement process for accurate...

Страница 25: ...5 7 0 Power Frequency Fields Before connecting or operating any component follow the safety information in the ETS Lindgren Product Information Bulletin included with your shipment Use care when operating this instrument near energized conductors ...

Страница 26: ...e of current electricity flowing through the conductors The previous illustration depicts the approximate spatial orientation of these fields electric field lines are shown to be directed such that they terminate at perpendicular angles to the surface of the earth and magnetic field lines are shown as lines encircling the conductors At any particular point in space the field can be determined by t...

Страница 27: ...ed maximum value of 175 mG equivalent to 14 A m In addition to the normal variation in field strength which is observed along a line transverse to the power line electric fields beneath power lines are perturbed by the local surroundings This illustration shows the phenomenon of electric field concentration which occurs above the head of a person standing under the line Localized enhancement of th...

Страница 28: ...lly purely vertically oriented directly beneath the conductors but at extended lateral distances from the line there can be some horizontal component to the field Thus in measurements of electric fields near power lines it may be important to explore different polarization components of the field to assess the resultant electric fields at points above the earth Measurement of electric field streng...

Страница 29: ... living environment often standards for this latter case are referred to as general population or public exposure limits Traditional approaches to radiation protection principally derived from ionizing radiation protection practices usually differentiate between occupational and public exposure Generally occupational exposure limits are higher more permissive than public limits This is because of ...

Страница 30: ...exposure standards found in the literature that either directly apply to the frequency range appropriate to VDT emissions or pertain to a frequency range close to that of interest As can be seen the primary difficulty in applying many RF exposure standards to VDT emission levels is that the applicable frequency range of the standards does not extend down low enough From the literature searched onl...

Страница 31: ...shipment for the complete ETS Lindgren warranty for your HI 3638 DURATION OF WARRANTIES FOR HI 3638 All product warranties except the warranty of title and all remedies for warranty failures are limited to one year Product Warranted Duration of Warranty Period Model HI 3638 ELF VLF Electric Field Meter 1 Year ...

Страница 32: ...32 Warranty www ets lindgren com This page intentionally left blank ...

Страница 33: ...ocol Data Type RS 232 Serial Data Mode Asynchronous Word Length 7 bit Parity Odd Stop Bits 1 Data Rate 9600 baud Information Transfer Protocol The probe responds to commands from another device it transmits no data without first receiving instructions to do so Probe Command Structure Probe Response Structure A command to a probe consists of A command letter Parameters if required CR a carriage ret...

Страница 34: ... Read battery voltage Bxx xx CR xx xx battery voltage D1 Read probe data 1 enables short form output Dxx xxuuu CR xx xx reading the position of the decimal point depends on the range setting of the probe uuu units for example _V_ V m mW2 mW cm2 Rx Set range x 1 2 3 4 or N next range Rx CR Rx range currently in use Ux Set unit type x 1 V m x 2 mW cm2 Ux CR U1 set to V m U2 set to mW cm2 ...

Страница 35: ...se strings begin with a colon and end with a carriage return E1 Communication error for example overflow E2 Buffer full error too many characters contained between the start character and carriage return sequence E3 Received command is invalid E4 Received parameter is invalid E5 Hardware error for example EEPROM failure E6 Parity error ...

Страница 36: ...36 Operating Protocols www ets lindgren com This page intentionally left blank ...

Страница 37: ...Charry 1985 Evaluation of the DC electrical environment in proximity to VDT s Journal of Environmental Science and Engineering A20 7 pp 745 780 Diffrient N A R Tilley and D Harman 1981 Humanscale 7 8 9 Cambridge Massachusetts MIT Press FDA 1984 Procedures for laboratory testing of video display terminals and selected television receivers monitors and viewfinders Winchester Engineering and Analytic...

Страница 38: ...assessment of VDU electric and magnetic field exposures Ontario Hydro Research Division report no 85 85 K Toronto Ontario Canada March 29 IRPA 1984 Interim guidelines on limits of exposure to radiofrequency electromagnetic fields in the frequency range from 100 kHz to 300 GHz Health Physics 46 4 pp 975 984 April Joyner K H et al 1984 Electromagnetic emissions from video display terminals VDTs Aust...

Страница 39: ...izing Radiation Vol 229 SPIE Society of Photo Optical Instrumentation Engineers Box 10 Bellingham Washington 98227 USA pp 179 186 Roy C R et al 1983 Measurement of electromagnetic radiation emitted from visual display terminals VDTs Australian Radiation Laboratory report ARL TR053 Yallambie Victoria March Slesin L 1985 New Soviet Population Standard 10 uW cm2 at MW frequencies Microwave News V 5 J...

Страница 40: ...tandard 161 9 occupational health exposure to radiofrequency radiation Department of the Air Force October 12 USSR 1976 Occupational safety standards electromagnetic fields of radiofrequency general safety requirements Official publication GOST 12 1 006 76 of the State Committee on Standards of the Council of Ministers of the USSR Moscow January 22 Weiss M M and R C Petersen 1979 Electromagnetic r...

Страница 41: ...www ets lindgren com EC Declaration of Conformity 41 Appendix D EC Declaration of Conformity ...

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