ETS-Lindgren HI-3604 User manual
Model HI-3604
Survey Meter
User Manual
ii www.ets-lindgren.com
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 1992–2016 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 is a trademark of
ETS-Lindgren, Inc.
Revision Record | HI-3604 Survey Meter, MANUAL |
Part #H-600043, Rev. C
Revision Description Date
Initial Release August, 1992
A New LCD December 1992
B Added CE June, 1997
C Updated to current style standards,
update Magnetic Field
Measurements table, update all
drawings/graphs/photos. Move
standard info. to PIB.
May, 2016
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Table of Contents
Notes, Cautions, and Warnings ................................................ v
Safety Information ..................................................................... v
1.0 Introduction .......................................................................... 7
Standard Configuration ................................................................................ 11
ETS-Lindgren Product Information Bulletin ................................................. 11
2.0 Maintenance ....................................................................... 13
Maintenance Recommendations ................................................................. 13
Replacement and Optional Parts ................................................................. 14
Upgrade Policies .......................................................................................... 14
Service Procedures ..................................................................................... 15
3.0 Specifications ..................................................................... 17
Electrical Specifications ............................................................................... 17
Physical Specifications ................................................................................ 18
4.0 Example Applications........................................................ 19
Power Frequency Fields .............................................................................. 19
Field Strength Measurements ...................................................................... 23
Waveform Measurements ............................................................................ 26
Frequency Measurements ........................................................................... 29
5.0 Before You Begin ............................................................... 31
6.0 Operation ............................................................................ 33
Keypad Matrix .............................................................................................. 33
Using the HI-3604 ........................................................................................ 34
Digital Display ...................................................................................... 34
Battery Condition ................................................................................. 35
Electric Field/Magnetic Field Model Selection ..................................... 35
Keypad Inputs ...................................................................................... 35
Keypad Matrix ...................................................................................... 36
Mode Select ......................................................................................... 37
Scale .................................................................................................... 37
Max ...................................................................................................... 38
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Using the HI-3616 Fiber Optic Remote Control ........................................... 39
Using the HI-3616 ................................................................................ 39
Using the Recorder Output .................................................................. 40
Appendix A: Warranty ............................................................. 42
Appendix B: EC Declaration of Conformity .......................... 44
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Notes, Cautions, and Warnings
Note: Denotes helpful information intended to
provide tips for better use of the product.
Caution: Denotes a hazard. Failure to
follow instructions could result in minor
personal injury and/or property damage.
Included text gives proper procedures.
Warning: Denotes a hazard. Failure to
follow instructions could result in
SEVERE personal injury and/or property
damage. Included text 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 Voltage: Indicates presence of hazardous voltage.
Unsafe practice could result in severe personal injury or
death.
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High Voltage: Indicates presence of hazardous voltage.
Unsafe practice could result in severe personal injury or
death.
Protective Earth Ground (Safety Ground): Indicates
protective earth terminal. You should provide
uninterruptible safety earth ground from the main power
source to the product input wiring terminals, power cord,
or supplied power cord set.
Laser Warning: Denotes a laser (class 1M) is part of the
operating system of the device.
Waste 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 collect used batteries for recycling or disposal. You
may contact your local waste disposal agency for
information on battery recycling and disposal.
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1.0 Introduction
The HI-3604 Power Frequency Field Strength Measurement System is
designed to assist in the evaluation of electric and magnetic fields that
are associated with 50/60 Hz electric power transmission and
distribution lines along with electrically operated equipment and
appliances. Direct digital readout of field strength is provided by the
instrument with the ability to read the meter remotely via a fiber optic
remote control (Model HI-3616) which is available as an option. The
HI-3604 finds applications in research and environmental field studies
where knowledge of the strength of power frequency fields is required.
It is designed to provide engineers, industrial hygienists and health and
safety personnel with a sophisticated tool for the accurate investigation
of power frequency electrical environments.
The HI-3604 has two selectable sensors for measuring both electric
and magnetic fields. The instruments' capabilities include data-logging,
waveform output, full auto-ranging, and a custom Liquid Crystal
Display (LCD) with a bar graph. All selection and control functions are
input from a front panel membrane switch pad. True RMS (root-mean-
square) detection assures accurate measurements of complex
waveforms. The waveform output jack allows observation and
evaluation of the actual waveform being measured. The data-logger
feature captures up to 112 field readings for later review using front
panel controls. Microprocessor technology is incorporated in the HI-
3604 to provide for automatic range changing (manual range changing
may be selected) and automatic zeroing of the instrument.
Electric fields are detected by a displacement current sensor which
consists of two thinly separated conductive disks which are connected
together electrically. When immersed in an electric field, charge is
redistributed among the two parallel disks such that the electric field
between the two disks remains at zero. This redistribution of charge is
reflected as a displacement current which can be measured and,
subsequently, related to the external electric field strength. This type of
transducer possesses a flat frequency response and permits accurate
measurement of fields having significant harmonic content with energy
at frequencies above the fundamental of 50 or 60 Hz.
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Surrounding the circular displacement current sensing disks is a coil
consisting of several hundred turns of fine gage wire. When placed in
an alternating magnetic field, a current is induced in the coil which is
proportional to the strength of the applied magnetic field. Magnetic field
strength is then determined by measuring the voltage developed
across the terminals of the coil. While an unterminated loop will provide
an output which is directly proportional to the frequency of the
magnetic field, the HI-3604 employs electronic compensation circuitry
which results in a tailored frequency response that is flat in the
frequency range of importance to power frequency measurements.
This feature permits the HI-3604 to be used in environments having
significant harmonic content and yield accurate measures of the
resultant fields. Broadband response is required when measuring fields
having significant harmonic distortion such as may occur with electrical
machinery.
The outputs of both field transducers are measured with a true RMS
detector. True RMS detection offers accurate evaluation of fields
having a variety of waveforms, including non-sinusoidal waveforms.
Thus, whether the field being measured is produced by a near pure
sine wave source, like an electric power transmission line, or a highly
non-sinusoidal source, like a solid state light dimmer, the HI-3604 will
yield consistent measures of the RMS field strengths.
Instrument accuracy is derived from a field calibration using a one
meter diameter pair of Helmholtz coils for establishing an accurately
known magnetic field strength, and a pair of parallel one-meter square
aluminum plates separated by 30 cm for creating known electric field
strength. In the case of the Helmholtz coils, a precisely controlled and
measured sinusoidal current is driven through the coils and, based on
the dimensions of the coils, the magnetic field strength in units of
milligauss (mG) is calculated. For electric fields, a sinusoidal voltage
impressed across the two parallel plate electrodes is directly measured
and used to calculate the electric field strength by dividing the applied
voltage by the plate spacing to obtain field strength in units of volts per
meter (V/m). In each case, both currents and voltages in the calibration
set-ups are determined with a true RMS detector.
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The HI-3604 can be user programmed to indicate in either units of
milligauss/gauss, milliamperes/amperes per meter, or nano/micro
teslas. The HI-3604 indicates magnetic field flux density in units of
milligauss (mG) and gauss (G). The SI unit of magnetic field flux
density is the tesla (T). Environmental ELF magnetic field
measurements are generally reported in units of microtesla (μT) or
nanotesla (nT).
Magnetic field measurements in free space may be converted to
different units through the following relations:
1.0 mG = 0.1 µT = 80 mA/m
10 mG = 1.0 µT = 800 mA/m
100 mG = 10 µT = 8 A/m
1 G = 100 µT = 80 A/m
10 G = 1 mT = 800 A/m
The figures that follow illustrate typical frequency response plots for
electric and magnetic field strength. The HI-3604 is designed to
provide a flat response over the range of frequencies corresponding to
the 50 or 60-Hz power line frequency and the first several harmonics.
The tailored low- frequency characteristic to the response helps reduce
magnetic field response to movement of the sensor in the earth's
constant magnetic field. The bandwidth of the true RMS detector is a
function of the amplitude of the applied field. The bandwidth of the HI-
3604 is also related to the particular measurement range selected.
Thus, for a specific measurement, the bandwidth exhibited may be
greater or lesser than shown in in the figures. Generally, maximum
bandwidth, and thus accuracy, is obtained for any given field strength
by selecting the lowest range (and scale) that still permits an on-scale
reading. The HI-3604 also provides for monitoring the waveform of the
signal coming from the sensor preamplifier circuit in the input module.
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Figure 1-1: Magnetic Field Response
Figure 1-2: Electric Field Response
This signal is available from the phone jack located at the bottom of the
instrument. Connection of an oscilloscope to this jack will allow
observation of the preamplifier output.
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