Coliy G81 User manual

G81 Hall Effect
Handheld Gaussmeter
Operating Manual
www.coliy.com

Coliy Technology GmbH
® Names and Logo are registered trade- marks of
Coliy Technology GmbH
Trade names are trademarks of the owners.
© 2019
Edition: 02/19.03,...
Subject to change.
Our normal guarantee and delivery terms apply.
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Contents
Useful information ..........................................................................................................5
1.1 Measuring magnetic fields .......................................................................................6
1.2 About this instrument...............................................................................................6
1.3 About this operating manual ....................................................................................7
Safety instructions .........................................................................................................9
2.1 Using this operating manual ..................................................................................10
2.2 Proper use ..............................................................................................................10
2.3 Improper use ..........................................................................................................10
2.4 Dangers when handling rechargeable Batteries ....................................................10
2.5 Dangers from AC adapter/charger.........................................................................11
Preparing G81 gaussmeter for use ..............................................................................12
3.1 Unpacking ..............................................................................................................13
3.2 Instrument overview ................................................................................................14
3.3 Power supply ......................................................................................................... 14
3.4 Connecting the probe ............................................................................................15
3.5 Transverse and axial Probes...................................................................................16
3.6 Accessories..............................................................................................................17
Measuring with G81 gaussmeter .................................................................................18
4.1 Avoiding measurement errors ...............................................................................19
4.2 Switching on.........................................................................................................20
4.3 Overview of the display .........................................................................................20
4.4 Operating of single probe ......................................................................................21
4.5 The Menu screen ...................................................................................................21
4.6 Switching off ........................................................................................................24
4.7 Analog output .......................................................................................................24
PC software ..................................................................................................................25
5.1 Using the PC software ...........................................................................................26
5.2 Connecting the G81 gaussmeter ...........................................................................26
5.3 Working with the PC software................................................................................26
5.4 PC software interface ............................................................................................27
Instrument maintenance ..............................................................................................28
6.1 Cleaning the instrument .......................................................................................29
6.2 Replacing/removing the batteries ..........................................................................29
6.3 Disposal..................................................................................................................30
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1
Useful information
This chapter contains basic information about
measuring magnetic fields and about using the G81
gaussmeter.
1.1 Measuring magnetic fields
1.2 About this instrument
1.3 About this operating manual
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Useful information
1.1 Measuring magnetic fields
A Gaussmeter is a measuring instrument used to measure
the strength or direction of magnetic fields. The unit of measure
for magnetic field strength is the tesla. As this is a very large
unit for most practical uses, scientists commonly use the
nanotesla (nT) as their working unit of measure. Engineers often
measure magnetic fields in Gauss (1 Gauss = 100,000 nT, 1 T =
10000 gauss).
1.2 About this instrument
G81 Gaussmeter adopts Bypass Zero Technology
(patented technology) and high-stability GaN hall sensor,
without zero calibration, which greatly improves the accuracy of
the data and the convenience of use. G81 also has extremely
low measurement noise that is unique in a handheld
gaussmeter. The peak-to-peak noise within 60 seconds is less
than 0.05G. It can easily measure the metal materials’
remanence and even measure the earth's magnetic field (about
0.4G).
The DC accuracy of Gaussmeter G81 is better than 0.8%,
the measurement range is up to 100kG (10T), and the frequency
response range is DC-10kHz. Gaussmeter G81 uses Fourier
analysis method to measure AC magnetic field (RMS value and
spectrum analysis), which is very suitable for measuring AC
magnetic field of various waveforms (sine wave, square wave,
triangle wave, trapezoidal wave, sawtooth wave, etc.).
The Gaussmeter G81 uses a 3.2-inch color industrial
resistive touch screen and a menu and display that conform to
the smart phone habit. It is easy to operate, and users can use
it without reading the manual. The Gaussmeter G81 is powerful,
with maximum/minimum functions and magnetic field polarity
display function, storage function, real-time spectrum analysis
function and 0.2ms pulse magnetic field capture function.
More details in http://www.coliy.com
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Useful information
1.3 About this operating manual
Characters and symbols used
Various elements are used in this operating manual to
indicate special meanings or particularly important passages in
the text.
Symbols and terms used in warnings
According to the American National Standard ANSI Z535.6-2006, the
following warnings, symbols, and terms are used in this document:
The general danger symbol warns of risk of serious injury when used
with the signal words CAUTION, WARNING, and DANGER. Follow all
the instructions in order to avoid injuries or death.
NOTICE
Indicates a danger that results in damage to or destruction of
the instrument.
CAUTION
Indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
DANGER
Indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
Structure of warnings
All warnings are structured as follows:
SIGNAL WORD
Type and source of danger
Consequences of failure to observe warning
® Instructions for preventing danger
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About this operating manual
Symbols and marks used in this document
!
Important instruction
Indicates an instruction that must be followed to
avoid danger.
✓
Requirement
Indicates a requirement that must be met before
the next instruction can be carried out, e.g.
✓ The instrument is switched off.
Instruction
Indicates a single instruction, e.g.
⇒ Switch the instrument on.
Sequence of instructions
Indicates a sequence of instructions that must
be carried out in the order given.
Result
Indicates the result of carrying out an instruction,
e.g. The instrument starts a self-test.
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2
Safety instructions
This chapter contains important instructions on
how to use the G81 gaussmeter safely. Please
therefore read this chapter carefully and follow the
instructions closely.
2.1 Using this operating manual
2.2 Proper use
2.3 Improper use
2.4 Dangers when handling rechargeable Batteries
2.5 Dangers from AC adapter/charger
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Safety instructions
2.1 Using this operating manual
! Carefully read this entire operating manual before you
start using the instrument.
! Keep this operating manual so that it is available to
everyone who uses the instrument, and ensure that this
operating manual is with the instrument if you pass it on to a
third party.
2.2 Proper use
The G81 gaussmeter is designed to measure and
evaluate magnetic fields.
! Only use the instrument for the purpose and under the
conditions for which it has been designed.
! In particular, observe the technical data given in the
“Specification”.
! Ensure that only qualified personnel with appropriate
training can use the instrument.
2.3 Improper use
The G81 gaussmeter is not a warning device that gives
active notice of the existence of dangerous fields by means of a
visible or audible warning signal.
! Remember that this instrument is a measuring device,
not a warning device.
2.4 Dangers when handling rechargeable Batteries
When handled improperly, rechargeable batteries can
overheat, explode, or ignite.
⇒Only use the G81 gaussmeter with its rechargeable
batteries.
Do not use dry batteries.
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Dangers from AC adapter/charger
2.5 Dangers from AC adapter/charger
You could experience electric shock from the AC
adapter/charger.
⇒Do not use the instrument when the casing is damaged
because parts carrying dangerous voltages could be
exposed.
⇒Do not use an AC adapter/charger that has been
moved from a cold to a warm room.
⇒Only use the AC adapter/charger indoors and at
temperature between 0 °C and +40 °C.
⇒Only use the AC adapter/charger if the voltage
specification on the AC adapter/charger matches the AC
line voltage.
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3
Preparing G81 gaussmeter for use
This chapter describes all you need to do before starting to
use the G81 gaussmeter.
3.1 Unpacking
3.2 Instrument overview
3.3 Power supply
3.4 Connecting the probe
3.5 Transverse and axial Probes
3.6 Accessories
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Preparing G81
3.1 Unpacking
Packaging
The packaging is designed to be re-used as long as it
has not been damaged.
Keep the original packaging and use it whenever the
instrument needs to be shipped or transported.
Transport damage
NOTICE
Instrument/accessories damaged during transportation
using damaged instrument/accessories can lead to
subsequent damage.
⇒ Check the instrument and all accessories for damage
when you have unpacked them.
⇒ If the instrument is damaged, contact your Coliy
Service Center.
The addresses of your Coliy Service Center are listed at
the end of this operating manual and on the Internet at
http://www.Coliy.com
Equipping the case
You can use the case provided to store a wide range of
optional accessories in addition to the items supplied. The
figures below show the compartments in the case lid and case
base.
Note: The instrument is not ready for use until it has
reached a temperature within the operating range of -10 to +50
°C.
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Power supply
3.2 Instrument overview
3.3 Power supply
The power supply is normally taken from the batteries
pro- vided. You can use the AC Adapter / Charger supplied as
an alternative power source.
Operation from rechargeable batteries
The rechargeable batteries for this device are packaged
separately. The charging cycle takes about 6 hours.
Charging the batteries
If the device is probably not going to be used for several
weeks, it should be recharged before being stored to avoid the
possibility of deep discharge of the batteries.
WARNING
Charging the batteries with wrong AC Adapter/
Charger: Overheating, explosion, or ignition of
eargeable batteries/batteries or their surroundings
⇒ You must use only the AC Adapter / Charger
supplied to charge the batteries.
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.
Preparing G81
Note: A complete charge cycle takes about 6 hours (With
the instrument switched off).
Starting the charge cycle
✓ The AC line voltage must match the operating
voltage of the AC Adapter / Charger.
1. Connect the AC Adapter / Charger to the USB
charging socket of the G81 gaussmeter.
2. Connect the AC Adapter / Charger to the AC line.
The charge cycle starts.
The Charge LED glows red during the entire
charge cycle.
As soon as the batteries are fully charged, the AC
Adapter / Charger switches to trickle charge mode and the
Charge LED glow green.
Proper handling of rechargeable batteries
⇒Observe the following precautions when handling
rechargeable batteries:
• Always handle the batteries with care.
• Do not drop or damage the batteries or expose them to
excessively high temperatures.
3.4 Connecting the probe
There are many different probes available for different
applications for the G81 gaussmeter. You can find more
information about the order numbers and specifications of
the
probes under “Ordering information”, as well as in the data
sheets of the G81 gaussmeter and probes. These documents
can also be downloaded from the Coliy web site on the
Internet at http://www.Coliy.com.
NOTICE
Wrong handling of the probe
Damage of the probe head
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Transverse and axial probes
Probe with “Push-Pull” connector
Connecting the probe
✓ The red mark on the probe plug is pointing towards
the back of the instrument.
⇒Push the probe plug straight down into the probe socket
until it clicks into place.
The G81 gaussmeter detects the probe model
automatically. The probe model is displayed top left when you
switch on the instrument.
Disconnecting the probe
⇒Slide the sleeve on the probe plug upwards and pull
the probe upwards to remove it.
3.5 Transverse and axial Probes
COLIY G81 gaussmeter probes are designed to meet the
electrical and mechanical requirements of virtually any
application. Models are available for transverse, axial, and very
low field measurements. The probe style is dependent upon
the measurement environment. The probe’s length, outside
diameter (axial probes) or thickness and width (transverse
probes) are important if there are physical constraints where
the probe will be used In ‘transverse’ probes the Hall
generator is mounted in a thin, flat stem whereas in ‘axial’
probes the Hall generator is mounted in a cylindrical stem. The
primary difference is the axis of measurement, as shown by
‘+B’ in following picture. Generally transverse probes are used
to make measurements between two magnetic poles such as
those in audio speakers, electric motors and imaging
machines. Axial probes are often used to measure the
magnetic field along the axis of a coil or solenoid. Either probe
can be used where there are few physical space limitations,
such as in geomagnetic or electromagnetic interference
surveys.
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Preparing G81
All Probe Configurations
3.6 Accessories
The instrument (host with selected probes) is shipped with:
- Power adaptor (input: 100- 230VAC, output: 5VDC);
- Low impendence USB cable (for communication and
power connection);
- U disk (manual and PC software).
Optional Components including:
- Dedicated analog output BNC conversion cable;
- Zero flux chamber, used for shielding the probe from
unwanted fields during zeroing;
- A sturdy carrying case, provided for the zero flux chamber,
probes, host, and this manual;
- Calibration data report;
- 3-Direction precision non-magnetic movement platform.
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4
Measuring with G81 gaussmeter
This chapter describes how to make measurements using
the G81 gaussmeter.
4.1 Avoiding measurement errors
4.2 Switching on
4.3 Overview of the display
4.4 Operating of single probe
4.5 The Menu screen
4.6 Switching off
4.7 Analog output
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Measuring with the G81
4.1 Avoiding measurement errors
The measurement result can be falsified by external
influences when measuring magnetic fields. Considerable
measurement deviations can occur under certain circumstances,
particularly when measuring low field strengths. The following
tips may be of assistance in recognizing sources of interference
so as to avoid measurement errors. The following factors can
affect the measurement result:
• Distance
• Changes in temperature
• Angle
Distance
To a great extent, the reading magnetic field strengths is
determined by distance between the hall sensor and magnet.
Make a test standard. Make a fixture for the probe. Ensure the
distance between probe and magnetic material.
Recommendation:
Recommendation:
Changes in temperature (see probes with temperature
compensation)
The temperature coefficient of hall sensor is 0.03%/℃, thus
stable vicinity temperature will contribute to the test accuracy.
The calibration temperature of the probe is 25℃. Following are
some tips to gain an optimal accuracy in different vicinity
temperature:
1. To calculate an accurate data according to the actual
temperature and temperature coefficient.
2. Utilize another type of Gaussmeter and choose a probe
that has a temperature a sensor integrated.
HALL sensor and magnetic angle
For axial probe, the maximum magnetic strength is only
measured when the HALL sensor perpendiculars to the
magnetic direction. For any other cases, if the angle between
HALL sensor and magnetic field is Ø, in consequence, the
measured maximum data is *sinØ.
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Overview of the display
Recommendation:
Others
1. Failure to zero the error signals from the instrument,
probe, a nearby source of magnetic interference.
2. Subjecting the probe to physical abuse.
In order to measure the maximum magnetic strength, the
HALL sensor should approximately perpendicular to the
magnetic field. The factor of magnetic direction is out of
consideration when a 3-axis probe is utilized.
Further useful information can be found at www.Coliy.com
4.2 Switching on
You can switch the instrument on as soon as you have
prepared it for use.
⇒ Press the ON/OFF button to switch the instrument on.
The instrument displays the instrument information and
performs a self-test.
4.3 Overview of the display
The image below shows the items that can be
displayed during a measurement.
1
Gaussmeter Logo
2
Measured Value
3
N/S Polarity
4
Max Value
5
Min Value
6
Alarm Threshold
7
Save Shortcut
8
Menu Shortcut
9
Ratio (= Measured Value / Alarm Threshold)
10
Magnetic Field Unit
11
DC Measurement Mode
12
Company Logo
13
Battery allowance
14
Current Time
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