ETS-Lindgren HI-3604 User manual

Model HI-3604
Survey Meter
User Manual

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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 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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Standard Configuration
 Readout/Sensor Assembly
 Two Nine-Volt Alkaline Batteries
 Custom Carrying Case
 Manual
A list of optional items is included in “Replacement and Optional Parts”
on page 14.
ETS-Lindgren Product Information Bulletin
See the ETS-Lindgren 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

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2.0 Maintenance
Before performing any maintenance,
follow the safety information in the
ETS-Lindgren Product Information
Bulletin included with your shipment.
Maintenance of the HI-3604 is limited
to external components such as
cables or connectors.
Warranty may be void if the housing
is opened.
If you have any questions concerning
maintenance, contact ETS-Lindgren
Customer Service.
Maintenance Recommendations
As with any battery operated device, do not leave exhausted
batteries in the instrument.
Remove batteries if the instrument will not be used for an extended
period of time.
When replacing batteries, always replace both batteries at the same
time.
When the battery symbol illuminates, it is time to replace the batteries
using the following steps:
WARRANTY

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 Remove the two Philipps flat-head screws, nuts and washers
on the bottom end-plate of the readout that hold the
instrument cover in place.
 Replace the batteries. Be sure that the polarity of each
battery is correct. When viewing the back side of the HI-
3604, the batteries go in with the positive terminal facing to
the left. The batteries are inserted with the battery terminals
pointed into the case.
 Replace the screws and tighten into place.
Replacement and Optional Parts
ETS-Lindgren may substitute a similar part or new part number with
the same functionality for another part/part number. Contact
ETS-Lindgren for questions about part numbers and ordering parts.
Following are the part numbers for ordering replacement or optional
parts for the HI-3604.
Part Description Part Number
Manual H-600043
Dielectric Floor Stand (optional) 491008
Dielectric Tripod (optional) 491009
Remote Control Readout
(optional)
HI-3616
Serial (RS232) to Fiber Optic
Interface (optional)
HI-4413
Upgrade Policies
Periodically, Field Probes are upgraded to enhance functionality.
Contact ETS-Lindgren Customer Service for the upgrade status of your
Field Probe.

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Service Procedures
C ONTACTING ETS-L INDGREN
Note: Please see www.ets-lindgren.com for a list of ETS-Lindgren
offices, including phone and email contact information.
S ENDING A C OMPONENT FOR S ERVICE
For the steps to return a system or system component to ETS-
Lindgren for service, see the Product Information Bulletin included with
your shipment.
C ALIBRATION S ERVICES AND A NNUAL C ALIBRATION
See the Product Information Bulletin included with your shipment for
information on ETS-Lindgren calibration services.

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3.0 Specifications
Electrical Specifications
Frequency Range
(nominal)
30 – 2000 Hz
Frequency Response
(typical)
Magnetic Field:
+0.5,-2.0 dB (30-1000 Hz)
-2.0, -6.0 dB (1000-2000 Hz)
Electric Field:
+0.5, -2.5 dB (30-2000 Hz)
Dynamic Range Electric: 1 V/m – 200 kV/m
Magnetic: 0.2 mG – 20 G
Response True RMS
Logging On-Board, 112 Readings (max)
Sensitivity Electric fields – 1 V/m-199 kV/m
Magnetic field – 0.1 mG-20 G

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Physical Specifications
Dimension 35.89 cm long x 20.65 cm wide max
(14.13 in x 8.13 in)
Weight 2.5 kg (5.5 lbs)
Power Two (2) nine-volt alkaline batteries
Concentric Plate Displacement
Current Electric Field Sensors
16.5 cm (6.5 inch) diameter 400 turn
electrically shielded magnetic field
sensing coil.
Switch selectable between electric
and magnetic fields.
Output Liquid crystal display; preamplifier
output via phono jack (analog signal
from sensor/preamplifier equal to 1
mV/(mA/m); digital fiber optic signal
(for remote reading via connection
to HI-3616 Fiber Optic Remote
Control).

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4.0 Example Applications
Caution - Use care when using this instrument near energized conductors. Be
sure to read the hazard warning located on the Warranty page.
Power Frequency Fields
The HI-3604 finds application in numerous circumstances involving 60-Hz fields.
A prime example of the HI-3604's utility is evaluation of electric and magnetic
fields in the vicinity of electric power lines. In this case, the electromagnetic field
environment surrounding a typical power transmission line can be visualized
through Figure 4-1. This figure illustrates a single-circuit, three phase power line
consisting of three separate electrical conductors, each having an impressed
voltage which is 120 degrees out of phase with its neighboring conductors. A
shield wire may be present above the three phases of the line; this wire, which is
grounded, acts as a preferred point for lightning strikes which could, if
unprotected, strike the current carrying conductors, potentially damaging and
removing the line from service for repairs. A double circuit line would consist of
two sets of the three phase conductors.
Figure 4-1 shows how the electric field can be perturbed by the body; localized
enhancement of the electric field will lead to a decreased field strength in other
nearby areas. This inherent shielding effect of the body, unless the body is
sufficiently distant from the instrumentation, can lead to inaccurate measures of
the electric field strength. Depending on the proximity of the body and its
orientation, the perturbation effect of the body can lead to either enhanced
electric field strength readings or reduced readings when compared to the true
unperturbed field strength. While in some cases it may be desirable to determine
the enhanced fields near objects, in general, most field measurements should be
directed toward assessing the unperturbed values. Unperturbed field strengths,
for example, or so called free space values, are more easily related to internal
induced currents in the body. Induced currents represent one potential dosimetric
measure of electric field exposure.

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Figure 4-1: Single-circuit, three phase power line consisting of
three separate electrical conductors