Gazelle G9204 - II User manual

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I. Overview
handheld 1000A AC clamp meters, designed in
accordance to EN61010-2010 and CAT III 600V/CAT II 1000V,
with full-featured protection ensuring users a safe and reliable
measurement experience. These meters have multiple
functions such as basic electric measurement, inrush current
measurement, high-accuracy current measurement, etc.
G9204-II is ideal measurement tools in electric fields.
II. Features
1) Lightweight and compact.
2) Full-featured false detection protection for up to 600V (30kVA)
energy surge, overvoltage and overcurrent alarm functions.
3) Auto ranges for current include 60A, 600A, 1000A, frequency
response is up to 45Hz~1kHz, G9204-II has inrush current
measurement function.
4) Large capacitance measurement (60nF~60mF), fast ADC
(3 times/s), response time for capacitance measurement:
less than 6s for ≤1mF; about 8s for ≤60mF.
5) Overvoltage and overcurrent alarm function.
6) The circuit has an automatic power saving function, the
consumption in sleep state is <20uA, which effectively extends
the battery life to 200 hours.
Warning: Before using the meter, please read the Safety
Information carefully.
III. Accessories
Open the package box and take out the meter. Please double
check whether the following items are missing or damaged.
1. User manual ----------------------------- 1 pc
2. Test leads 1 pair---------------------------------
3. K-type temperature probe 1 pc------------
4. Carrying bag 1 pc-----------------------------
If any of the above is missing or damaged, please contact your
supplier immediately.
IV. Safety Information
The meter is designed in accordance with IEC/EN61010-1,
61010-2-032 and electromagnetic radiation protection EN 61326-
1 safety standards, and conforms to CAT III 600V, CAT II 1000V,
double insulation and pollution grade II. In case the meter is
not used according to the operating instructions, the protection
provided by the meter may be compromised or lost.
1. Before use, please check if there is any item which is damaged
or behaving abnormally. If any abnormal item (such as bare
test lead, damaged meter casing, broken LCD, etc.) is found,
or if the meter is considered to be malfunctioning, please do
not use the meter.
2. Do not use the meter if the rear cover or the battery cover is
not covered up, or it will pose a shock hazard!
3. When using the meter, your fingers must be placed behind
the finger guard ring of the test leads. During measurement,
do not touch exposed wires, connectors, unused inputs, or
circuits being measured to prevent electric shock.
4. The function switch should be placed in the correct position
before measurement. It is forbidden to change the position
during measurement to avoid damage to the meter!
5. Do not apply voltage over 1000V between any meter terminal
and earth ground to prevent electric shock or damage to the
meter.
6. Be cautious when the measured voltage is higher than 60V
(DC) or 30Vrms (AC) to avoid electric shock!
7. Never input voltage or current which exceeds the specified
limit. If the range of the measured value is unknown, the
maximum range should be selected. Before measuring the
resistance, diode and continuity online, switch off the power
supply of the circuit, and fully discharge all capacitors to avoid
inaccurate measurement.
8. When the “ ” symbol appears on the LCD, please replace
the batteries in time to ensure measurement accuracy. If the
meter is not in use for a long time, please remove the batteries.
9. Do not change the internal circuit of the meter to avoid damage
to the meter and user!
10. Do not use or store the meter in high temperature, high
humidity, flammable, explosive and strong magnetic field
environments.
11. Clean the meter casing with a soft cloth and mild detergent.
Do not use abrasives or solvents!
V.Electrical Symbols
Description Description
High voltage hazard
AC
DC
Double insulated
Grounding
Warning
Symbol Symbol
VI. General Specifications
1. Max display: 6099
2. Polarity display: Auto
3. Overload display: “OL” or “-OL”
4. Low battery indication: The “ ” symbol is displayed.
5. Low battery shutdown prompt: The “Lo.bt” interface appears on
the LCD and lasts for about 10s, the buzzer beeps three times,
and the meter automatically shuts down.
6. Test position error: If the source under test is not placed at the
center of the clamp jaws when measuring current, ±2.0% additional
error in reading will be produced.
7. Drop protection: 1m
8. The maximum size of jaw opening: 48mm in diameter
9. The maximum size of conductor to be measured: 45mm in diameter
10. Battery: AAA battery 1.5V×2
11. Auto power off: If there is no operation of the function switch or
any button for 15 minutes, the meter will automatically power off.
This function can be turned off as needed.
12. Dimension: 242mm×76.5mm×52mm
13. Weight: About 235g (including batteries)
14. Altitude: 2000m
15. Operating temperature and humidity: 0°C~30°C (≤80%RH),
30°C~40°C (≤75%RH), 40°C~50°C (≤45%RH)
16. Storage temperature and humidity: -20°C~60°C (≤80%RH)
17. Electromagnetic compatibility:
RF=1V/m, overall accuracy=specified accuracy+5% of range
RF>1V/m, no specified calculation
VII.External Structure
1. NCV sensing end
2. Clamp jaws
3. Hand guard
4. Jaw opening trigger
5. Function switch
6. LCD display
7. Function buttons
8. Positive (+) input jack
9. COM (negative -) input jack
VIII.Button Description
1. SELECT Button
In the composite function position, press this button to switch between
the corresponding measurement functions; in current measurement
function position, long press this button (about 2s) to enter INRUSH
measurement function, short press to refresh the current reading,
long press again to exit INRUSH measurement function.
2. HOLD/LIGHT Button
a). Short press this button to enter or exit the data hold mode.
b). Long press this button (about 2s) to turn on/off the light, the light
will automatically turn off after 5 minutes.
3. MAX/MIN Button
Short press this button to enter the maximum/minimum measurement
mode and long press this button to exit (only valid for AC/DC voltage,
AC current). The meter will consecutively make beep sounds twice
if this button is pressed in other inapplicable function positions.
4. REL/BACKLIGHT Button
1) In the voltage, current, capacitance and resistance positions,
press this button to store the current reading as a reference for
future readings. When the LCD display value is reset to zero, the
stored reading will be substracted from the future readings. Press
this button again to exit the relative value mode. The meter will
consecutively make beep sounds twice if this button is pressed in
other inapplicable function positions.2) Long press for about 1~2
seconds to turn on/off the backlight, the backlight will automatically
turn off after the backlight is on for about 1 minute.3) Long press
for about 3 seconds to enable the backlight to enter always-on
mode, long press for ≥3 seconds to exit the mode.
IX.Operating Instructions
1. AC Current/Motor Inrush Current Measurement (Figure 2 & 3)
1) Select the AC current range, the meter will automatically switch
corresponding range (60.00A/600.0A/1000A) according to the
input amplitude during measurement.
2) Press the trigger to open the clamp jaws, and fully enclose one
conductor.
3) Only one conductor can be measured at a time, otherwise the
measurement method and reading will be wrong.
Inrush current is the true
RMS of current within
100ms from the start of
triggering point, the
triggering value of inrush
current in 600A range is
about 6A, used to detect
the cranking current of
motor.
RMS (INRUSH)
AC current
Cycle
PEAK
A area
Warning:
Short circuit is not easy to occur between the clamp jaw and
the measured object, but when measuring uninsulated
conductor, please be careful not to cause short circuit
between the uninsulated conductor and the clamp jaws.
The measurement is sensitive to mechanical stress to some
extent, so please do not release the trigger suddenly when
it is pressed, otherwise the impact will affect the reading in
a short time.
To ensure measurement accuracy, the measured conductor
must be centered in the clamp jaws (A area), if is deviated
from center area (in B or C areas), ±2.0% additional error in
reading will be produced.
When the measured current is >1000A, the meter will
automatically sound an alarm.
2. AC/DC Voltage and Frequency Measurement
1) Insert the red test lead into the signal input terminal, and the
black test lead into “COM” terminal.
2) Turn the function switch to AC voltage position, and connect
the test leads with the measured load or power supply in
parallel.
Warning:
Do not input voltage above 1000V (AC). Although it is possible
to measure higher voltage, it may damage the meter.
Be cautious to avoid electric shock when measuring high
voltage.
When the measured voltage is >30V/AC, the LCD will display
the high voltage alarm prompt “ ”.
3. Resistance, Continuity, Capacitance and Diode
Measurement
1) Insert the red test lead into the signal input terminal, and the
black test lead into “COM” terminal.
2) Turn the function switch to the “Ω” position, press the SELECT
button to select resistance measurement, and connect the
test leads with both ends of the measured resistance in
parallel.
Capacitance
Continuity
Diode
Resistance
Red Black
If the measured resistor is open or the resistance exceeds
the maximum range, the LCD will display “OL”.
Before measuring the resistance online, switch off the power
supply of the circuit, and fully discharge all capacitors to avoid
inaccurate measurement.
If the resistance is not less than 0.5Ω when the test leads are
short-circuited, please check the test leads for looseness or
other abnormalities.
For continuity measurement, if measured resistance is <30Ω,
the circuit is in good conduction status and the buzzer beeps
continuously; if measured resistance is 30Ω~50Ω, the buzzer
may make sounds or make no sound; if measured resistance
is >51Ω, the buzzer makes no sound certainly.
For diode measurement, “ ” polarity is needed to be
distinguished, read the approximate forward PN junction
voltage of measured diode directly from the display . For the
silicon PN junction, the normal value is generally about
500~800mV.
Before measuring capacitance “ ”, it is recommended to
use “REL” measurement mode for capacitance ≤100nF.
For capacitance above uF, short-circuit the electrode of the
capacitor and fully discharge all capacitors (especially for
capacitors with high voltage) to avoid damage to the meter and
user.
Do not input voltage over AC/DC 30V to avoid personal injury.
4. Temperature Measurement
1) Insert the positive pole of the temperature probe into the
signal input terminal and negative pole into “COM” terminal.
2) Turn the function switch to “°C/°F” position and the LCD will
display room temperature.
3) Fix the temperature probe on the object to be tested, and
read the temperature value of the tested object directly from
the display after a few seconds.
Figure 1
Figure 4
Figure 5
Figure 2
Figure 3
Red Black
G9204 - II
1000A Digital Clamp Meter
User Manual
P/N:
G9204-II is

G9204-II
±(2.5%+5)
±(1%+2)
NCV
60.00A
600.0A
1000A
600.0A
(INRUSH)
0.01A
0.1A
1A
0.1A
45 65Hz～
±(1.5%+5)
±(5.0%+10)
65 1kHz～
G9204-II
6.000V
60.00V
600.0V
1000V
0.001V
0.01V
0.1V
1V
G9204-II
600.0mV
6.000V
60.00V
600.0V
1000V
0.1mV
0.001V
0.01V
0.1V
1V
±(0.8%+2)
±(0.7%+3)
±(0.1%+4)
±(3.0%+5)
10Hz
～
10MHz
0.1%
～
99.9%
0.01Hz
～
0.01MHz
0.1%
±(0.8%+2）
±(1.0%+5）
G9204-II
600.0Ω
6.000kΩ
60.00kΩ
600.0kΩ
6.000 MΩ
60.00 MΩ
0.1Ω
0.001kΩ
0.01kΩ
0.1kΩ
0.001MΩ
0.01MΩ ±( ）2.5%+5
G9204-II
600.0Ω 0.1Ω
G9204-II
6.000V 0.001V
G9204-II
60.00nF
600.0nF
6.000uF
60.00uF
600.0uF
6.000mF
60.00mF
0.01nF
0.1nF
0.001uF
0.01uF
0.1uF
0.001mF
0.01mF
±(4.0%+10)
±(4.0%+5)
±(10%)
-40℃～40℃
40℃～400℃
400℃～1000℃
-40℉～104℉
104℉～752℉
752℉～1832℉
1℃
1℉
±4℃
±(1.5%+4)
±(2.0%+4)
±5℉
±(2.0%+4)
±(2.5%+4)
1000Vrms
600Vrms
600Vrms
600Vrms
600Vrms
600Vrms
600Vrms
1000Vrms
/±(1%+5)
4) Press the SELECT button to switch between °C and °F.
Warning:
The ambient temperature of the meter should be in the range
of 18-28°C, otherwise it will cause measurement error.
The positive and negative poles of the temperature probe
should be properly connected. Do not measure non-insulated
live objects to avoid incorrect readings.
Do not input voltage higher than 30V to avoid personal injury.
5. Non-contact AC Electric Field Sensing (NCV)
The electric field sensing sensitivity is divided into two levels.
According to the local power-frequency voltage, press SELECT
to choose 110V or 220V measurement mode, bring the NCV
sensing end of the clamp jaws to power-frequency electric field,
when the intensity of measured electric field reaches to a certain
level, the LCD will display segment “----” and the buzzer will
make beep sound. As the intensity of the measured electric
field increases, the buzzer will beep at a higher frequency.
HFLo measurement condition (110V), when electric field is
not sensed, HFLo will be displayed; when electric field is
sensed, “— — —L” will be displayed, the higher the frequency
at which the buzzer beeps, the stronger the electric field.
HFHi measurement condition (220V), when electric field is
not sensed, HFHi will be displayed; when electric field is
sensed, “— — —H” will be displayed, the higher the frequency
at which the buzzer beeps, the stronger the electric field.
Warning:
Use the NCV sensing end of the clamp jaws to approach the
measured electric field, otherwise the measurement sensitivity
will be affected.
When the measured electric field voltage is ≥100V (AC),
observe whether the conductor of the measured electric field
is insulated to avoid personal injury.
6. Others
Auto power off: During measurement, if there is no operation
of the function switch or any button for 15 minutes, the meter
will automatically shut down to save power. You can wake it
up by pressing any button or restart it after turning the function
switch to the OFF position
To disable the auto power off function, press and hold the
SELECT button in the off state, and then turn on the meter.
To resume the auto power off function, restart the meter after
shutdown
Buzzer: When any button is pressed or the function switch
is turned, if it is valid, the buzzer will make one beep (about
0.25s). When measuring voltage or current, the buzzer will
beep intermittently to indicate the over range
Low battery detection: The internal VDD will be automatically
detected as long as the meter is on. If it is lower than 2.5V,
the LCD will display the “ ” symbol.
Low battery shutdown function: When the battery voltage is
lower than about 2.4V, the LCD displays the “ ” symbol,
the “Lo.bt” interface appears and lasts for a few seconds,
the buzzer makes consecutive beeps three times, and then
the meter automatically shuts down.
X. Technical Specifications
Accuracy: ± (a% of reading + b digits), 1 year calibration period
Ambient temperature and humidity: 23 °C±5 °C; ≤80%RH
Temperature coefficient: To ensure measurement accuracy,
operating temperature should be within 18°C~28°C and the
fluctuation range should be within ±1°C. When the temperature
is <18 °C or >28 °C, add temperature coefficient error 0.1 x
(specified accuracy)/ °C.
(1) AC Current
Range
Resolution
Accuracy
Frequency response: 45Hz~1kHz
For 60A range, open circuit allows least significant digit <3.
Accuracy guarantee range: 1%~100% of range
The triggering value of inrush current at 600A range is 6A, the
triggering time is within 100ms approximately.
Range
Resolution Accuracy Overload
Protection
Voltage frequency
monitoring: 10Hz~10kHz
Input impedance: ≥10MΩ.
Frequency response: 45~400Hz
Accuracy guarantee range: 5~100% of range
The input voltage amplitude of voltage frequency should be >5V.
(3) DC Voltage
(4) Frequency/Duty Ratio
(2) AC Voltage
Range
Resolution Accuracy Overload
Protection
Input impedance: ≥10MΩ
For mV range, short circuit allows least significant digit ≤5; for
other ranges, reset to zero at short circuit.
Accuracy guarantee range: 1%~100% of range.
1) Measuring sensitivity:
≤100kHz:200mVrms
≤input amplitude ≤20Vrms
>100kHz~1MHz: 600mVrms
≤input amplitude ≤20Vrms
>1MHz~10MHz: 1.8Vrms
≤input amplitude ≤20Vrms
2) Duty ratio is only applicable
to the measurement of square
wave ≤10kHz;
amplitude:1Vp-p
Frequency ≤1kHz,
duty ratio: 10.0%-95.0%
Frequency >1kHz,
duty ratio: 30.0%-70.0%
Range Resolution Accuracy Overload Protection
(5) Resistance
Range
Resolution Accuracy Overload
Protection
(6) Continuity
Overload
Protection
Accuracy
Resolution
Range
≤30Ω: The
buzzer beeps
≥50Ω: No beep
Open-circuit
voltage: About
1.0V
(7) Diode
XI. Maintenance
Warning: Before opening the rear cover of the meter, remove
the test leads to avoid electric shock.
1.General Maintenance
1) When the meter is not in use, place the function switch in the
OFF position to avoid continuous consumption of battery energy.
2) Clean the meter casing with a soft cloth and mild detergent.
Do not use abrasives or solvents!
3) The maintenance and service must be implemented by
qualified professionals or designated departments.
2.Battery Replacement
1) Turn off the meter and remove the test leads from the input
terminals.
2) Unscrew the screw of the battery compartment, remove the
battery cover, and replace the 2 standard AAA batteries
according to the polarity indication.
3) Secure the battery cover and tighten the screw.
Take insulated conductor as
sensing condition: Select HFLo
or HFHi with SELECT button.
1) When electric field is not
sensed, HFLo will be displayed;
when electric field is sensed,
“———L” will be displayed, the
higher the frequency at which the
buzzer beeps, the stronger the
electric field.
2) When electric field is not
sensed, HFHi will be displayed;
when electric field is sensed,
“———H” will be displayed, the
higher the frequency at which the
buzzer beeps, the stronger the
electric field.
Range Sensing condition Accuracy
Power frequency
voltage
(50Hz/60Hz):
100V (EFLo)
220V (EFHi)
(10) NCV
Range Resolution Accuracy Overload
Protection
(9) Temperature
Range
Resolution Accuracy Overload
Protection
Range
Resolution Accuracy Overload
Protection
(8) Capacitance
Measured value = displayed value - open circuit value of the
test leads, open circuit allows least significant digit >0. (For
capacitance ≤100nF, it is recommended to use “REL”
measurement mode).
Accuracy guarantee range: 5%~100% of range.
Open-circuit
voltage: About 3.2V
Measurable PN
junction: Forward
voltage drop ≤3V
For the silicon PN
junction, the
normal value is
generally about
0.5~0.8V.
Figure 8
Figure 7
Figure