AXIOMET AX-174 Multimeter INSTRUCTION
Below you will find brief information for Multimeter AX-174. The AX-174 is a versatile multimeter that can measure AC and DC voltage, resistance, capacitance, current, and continuity. It also features a non-contact electric field detector and a diode test function. The AX-174 is ideal for a wide range of applications, including automotive, industrial, and home electronics.
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AX-174
INSTRUCTION
Contents
Title Page
1.
GENERAL INSTRUCTION ........................................................................................ 4
1.1.
Precaution safety measures ................................................................................ 4
1.1.1.
Preliminary ................................................................................................. 4
1.1.2.
During use ................................................................................................... 5
1.2.
Symbols ........................................................................................................ 6
1.3.
Instructions .................................................................................................... 6
2.
DESCRIPTION .................................................................................................... 7
2.1.
Instrument Familiarization .................................................................................. 7
2.2.
LCD Display .................................................................................................... 8
2.3.
Key pad ........................................................................................................ 9
3.
FUNCTION DESCRIPTION ....................................................................................... 9
3.1.
general Functions ............................................................................................ 9
3.1.1.
Auto scan mode ............................................................................................ 9
3.1.2.
DATA HOLD mode ......................................................................................... 10
3.1.3.
Manual ranging and Auto range mode ................................................................. 10
3.1.4.
True RMS measurement ................................................................................. 11
3.1.5.
Auto power off setting ................................................................................... 11
3.2.
Measurement Functions .................................................................................... 11
3.2.1.
AC and DC Voltage measurement ...................................................................... 11
3.2.2.
Non-contact electric field detector(EF mode) ....................................................... 12
3.2.3.
Resistance measurement ................................................................................ 12
3.2.4.
Continuity Check ......................................................................................... 13
2
3.2.5.
Diode Test ................................................................................................. 13
3.2.6.
Capacitance measurement .............................................................................. 14
3.2.7.
Current measurement ................................................................................... 14
4.
TECHNICAL SPECIFICATIONS ................................................................................. 15
4.1.
General Specifications ..................................................................................... 15
4.2.
Measurement specifications ............................................................................... 15
4.2.1.
AC Voltage ................................................................................................. 16
4.2.2.
DC Voltage ................................................................................................. 16
4.2.3.
Resistance ................................................................................................. 16
4.2.4.
Continuity Check ......................................................................................... 16
4.2.5.
Diode Test ................................................................................................. 16
4.2.6.
Capacitance ............................................................................................... 17
4.2.7.
Current ..................................................................................................... 17
4.2.8.
Linear frequency ......................................................................................... 18
5.
MAINTENANCE .................................................................................................. 18
5.1.
General maintenance ...................................................................................... 18
5.2.
Fuse replacement ........................................................................................... 18
5.3.
Battery replacement ....................................................................................... 19
6.
ACCESSORIES ................................................................................................... 19
3
1. GENERAL INSTRUCTIONS
This instrument complies with IEC 61010-1:2001, CAT III 1000V and CAT IV 600V overvoltage standards. See Specifications. To get the best service from this instrument, read carefully this user’s manual and respect the detailed safety precautions. International symbols used on the Meter in this manual are explained in chapter 1.2.
1.1. Precautions safety measure
1.1.1. Preliminary
*As the possibilities of high transient overvoltages occurred in today’s power system increase, more stringent safety standards are set for the electrical test equipment. Transients on electrical system (power grid, feeder or branch circuits) will trigger a series of incidents that may result in serious personal injury. To protect you against transient, safety must built into the test equipment.
Overvoltage In brief Examples category
CAT I
CAT II
CAT III
CAT IV
Electronic
Single-phase receptacle connected loads
Three-phase distribution, including singlephase commercial lighting
Three-phase at utility connection, any outdoor conductros
•
Protected electronic equipment
•
Equipment connected to (source) circuits In chich measures are taken to limit transient overvoltages to an appropriately low level.
•
Any high-voltage, low-energy source derived from a highwinding resistance transformer, such as the high-voltage section of a copier
•
Applience, portale tools, and Rother household and similar loads.
•
Outlet and long branch circuits.
•
Outlets At more than 10 meters (30feet) from CAT
III
•
Outlets At more that 20 meters (60 feet) from CAT
IV source
•
Equipment in fixed installations, such as switchgear and polyphase motors.
•
Bus and Fedder in industrial plants
•
Feeders and short branch circuits, distributions panel devices.
•
Lighting system in Langer buildings.
•
Appliance outlets with short connections to service entrance
•
Refers to the „origin of installation”; ie., where low-voltage connection is made to utility power.
•
Electricity meters, primary overcurrent protection equipment
•
Outsider and service entrance, service drop from pole to building, run between meter and panel.
•
Overhead line to detached building, underground line to well pump.
*When using this multimeter, the user must observe all normal safety rules concerning:
- protection against the dangers of electric current
4
-protection of the Multimeter aginst misuse.
*For your own safety, only use the test probes supplied with the instrument. Before use, check that they are in good condition
1.1.2. During Use
*If the meter is used near noise generating equipment, be aware that display may become unstable or indicate large errors.
*Do not use the meter or test leads if they look damaged.
*Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired
*Use extreme caution when working around bare conductors or bus bars
*Do not operate the meter around explosive gas, vapor or dust.
*Verify a meter’s operation by measuring a known voltage. Do not use the Meter if it operates abnormally. Protection may be impaired. When in doubt, have the Meter serviced.
*Uses the proper terminals, function and range for your measurements.
*When the range of the value to be measured is unknown, check that the range initially set on the multimeter is the highest possible or, wherever possible, choose the autoranging mode.
*To avoid damages to the instrument, do not exceed the maximum limits of the input values shown in the technical specifications tables.
*When the multimeter is linked to measurement circuits, do not touch unused terminals.
*Caution when working with voltages above 60Vdc or 30Vac rms. Such voltages pose a shock hazard.
*When using probes, keep your fingers behind the finger guards.
* When making connections, connect the common test lead before connecting the live test lead; when disconnecting, disconnect the live test lead before disconnecting the common test lead.
*Before changing functions, disconnect the test leads from the circuit under test.
*For all dc functions, including manual or auto-ranging, to avoid the risk of shock due to possible improper reading, verify the presence of any ac voltages by first using the ac function. Then select a dc voltage range equal to or greater than the ac range.
*Disconnect circuits power and discharge all high-voltage capacitors before testing resistance, continuity, diodes or capacitance.
*Never perform resistance or continuity measurements on live circuits.
*Before measuring current, check the meter’s fuse and turn off power to the circuit before connecting the meter to the circuit.
*In TV repair work or when carrying out measurements on power switching circuits, remember that high amplitude voltage pulses at the test points can damage the multimeter. Use of a TV filter will attenuate any such pulses.
*Use just one 6F22 battery, properly installed in the Meter’s battery case, to power the Meter.
*Replace the battery as soon as the battery indicator ( ) appears. With a low battery, the Meter might produce false readings that can lead to electric shock and personal injury.
*Do not measure voltages above 1000V in Category III, or 600V in Category IV installations.
*Do not operate the Meter with the case( or part of the case) removed.
5
1.2. Symbols
Symbols used in this manual and on the instrument: the
Caution: refer to the instruction manual. Incorrect use may result in damage to device or its components.
~
AC ( Alternating Current)
DC( Direct Current)
AC or DC
Earth Grodnu
Double insulated
Fuse
1.3.
Instructions
Conforms to European Union directives
*Remove test leads from the Meter before opening the Meter case or battery cover.
*When servicing the Meter, use only specified replacement parts.
*Before opening up the instrument, always disconnect from all source of electric current and make sure you are not charged with static electricity, which may destroy internal components.
*Any adjustment, maintenance or repair work carried out on the meter while it is live should be carried out only by appropriately qualified personnel, after having taken into account the instructions in this present manual.
*A “ qualified person” is someone who is familiar with the installation, construction and operation of the equipment and the hazards involved. He is trained and authorize4s to energize and deenergize circuits and equipment in accordance with established practices.
*When the instrument is opened up, remember that some internal capacitors can retain a dangerous potential even after the instrument is switched off.
*If any faults or abnormalities are observed, take the instrument out of service and ensure that ir cannot be used until it has been checked out.
*If the meter is not going to be used for a long time, take out the battery and do not store the meter in high temperature or high humidity environment.
6
2.
DESCRIPTION
2.1.
Instrument familiarization
A
UT
O
F
V
O
LT
SC
AN
OFF uA mA
A
8
1
2
3
5
6 uA mA
A
V
COM
4
7
Figure 2-1
The front panel is shown as in Figure 2-1, explanation being as follows:
1. LCD display
Used for displaying the measuring results and various symbols.
2. Keypad
Measurement function keys.
3.
Rotary switch
Used for selecting measurement functions.
4.
Terminal receiving the red test lead for voltage, resistance, capacitance, diode and continuity measurements.
5.
uA/mA
Terminal receiving the red test lead for µA, mA measurements
6.
A
Terminal receiving the red test lead for 6A, 10A measurements.
7.
COM
Terminal receiving the black test lead as a common reference.
8.
EF-detection area
7
2.2. LCD Display
Figure 2-2
LCD screen is shown as in Figure 2-2, with its every symbol’s meaning shown as in the Table 1
1
Symbol Meaning
Indicator for auto power off
2
Indicates negative readings
3
Indicator for AC voltage or current
Indicator for DC voltage or current
4
Unsafe voltage, voltage ≥30V, or voltage overload (OL)
5
6 SCAN
When auto scan mode is selected
7
8
9
10
AUTO
MANU
HOLD
MAX
The meter is in the Autorange mode in which the meter automatically selects the range with the best resolution.
The meter is in the Manual Range mode in which the user selects the range.
When HOLD functon is enabled. When delay-hold is selected, the HOLD symbol will be blinking for 6 seconds.
Display maximum data.
11 MIN
Display minimum data
12
Low battery indication (Note: When this symbol appears, it means that the battery needs to be replaced)
13
14
The meter is in Diode Test mode
The meter is in Continuity Check mode.
15
µmVA, nµmF,
KMΩHz
Measurement units
This symbol means that the input is too large for the selected range
16
17 EF
This meter is non-contact electric field detector mode
8
2.3.
Keypad
2.3.1.
SELECT
1) When the meter is turned off and the rotary switch is not in position of OFF, press SELECT key for 2 seconds to turn on the meter and press the key once more >2 sec. To turn the power OFF.
2) At EF/VOLT position
Switches between Auto scan mode, AC and DC voltage, Non-contact electric field detector
(EF mode)
3) At
Ω position
Switches between Auto scan mode, Resistance measurement, Continuity checz, Diode Test and
Capacitance measurement.
4) At A mA µA position
Switches between Auto scan mode, DC and AC current.
5) Power-up Option
Disables automatic power-off feature
2.3.2.
RANGE
At ACV, DCV, Ω, , A,mA and µA
1) Press RANGE to enter the manual ranging mode.
2) Pres RANGE to step through the ranges available for the selected function.
3) Press and hold RANGE for 2 seconds to return to autoranging.
2.3.3.
HOLD
Press it to enter the Data Hold mode. Used to maintain the measurement data unchanging, by pressing the key again it will exit the Data Hold mode. Pressing this key and last for 2 seconds, the meter will delay for 6 seconds, than enters HOLD mode.
2.3.4.
~ Hz
During the voltage or current measurement, by pressing ~Hz key the meter will enter the linear frequency measurement state. At this time what being measured is the frequency of voltage or current. By pressing this key again it will return the voltage or current measurement state.
2.3.5.
MAX/MIN
This key is for measuring maximum value and minimum value.
1) press it to enter Max/Min mode and simultaneously display the maximum value.
2) Press it again; the LCD will display the Minimum Value
3) Press it again; the LCD will display the current Value
4) Press and hold it for two seconds, the meter will return to normal measurement state.
2.3.6.
Press the this key, backlighton, press it again, backlight off.
3.
FUNCTION
3.1.
General Functions
3.1.1.
Auto scan mode
When the meter is turned on, it will be power-on reset to auto scan mode. The meter automatically selects the appropriate measurement mode and range according to the measured object. In Auto-
Scan mode, press RANGR, HOLD, MAX MIN keys are valid, press SELECT key to exit Auto SCAN mode.
In automatic scan mode, full automatic measurement shown as in the Table 2:
9
Measurement
DC V
AC V
Resistance
Capacitance
DC µA
AC µA
DC mA
Auto ranging
1,0 mV ~ 1 000 V
300,0 mV ~ 1 000 V (60 Hz)
0 Ω ~ 6,000 MΩ
1,000 nF ~ 600,0 µF
0,1 µA ~ 6000 µA
30 µA ~ 6000 µA (60 Hz)
0,01 mA ~ 600,0 mA
AC mA
DC A
3,00 mA ~ 600,0 mA (60 Hz)
0,01 A ~ 10 A
AC A 3,00 A ~ 10 A (60 Hz)
3.1.2.
DATA HOLD mode
Data Hold mode makes the meter stop updating the display. Enabling Data Hold function in autorange mode makes the meter switch to Manual ranging mode, but the full-scale range remains the same. Data Hold function can be cancelled by changing the measurement mode, pressing RANGE key, or push HOLD key again.
To enter and exit the Data Hold mode:
1) Press HOLD key (short press). Fixes the display on the current value, HOLD is displayed.
2) A second short press returns the meter to normal mode.
3) Pressing HOLD key and last for 2 seconds, the HOLD symbol in LCD will be blinking and the meter will delay for 6 seconds, that enters HOLD mode.
3.1.3.
Manual ranging and Auto range mode
The Meter has both manual ranging and auto range options.
*In the auto range mode, the Meter selects the best range for the input detected. This allows you to switch test points without having to reset the range.
*In the manual ranging mode, you select the range. This allows you to override auto range and lock the meter in a specific range.
*The Meter defaults to the auto range mode in measurement functions that have more than one range. When the Meter is in the auto range mode, AUTO is display.
To enter and exit the manual range mode:
1) Press RANGE key. The Meter enters the manual ranging mode. AUTO turns off. Each presses of
RANGE key increments the range. When the highest range is reached, the Meter wraps to the lowest range.
Note: If you manually change the measurement range after entering the Data Hold modes, the Meter exits this mode.
2) To exit the manual ranging mode, press and hold down RANGE key for two seconds. The Meter returns to the auto range mode and AUTO is displayed.
10
3.1.4.
TRUE RMS measurement
All the measurement values of the true RMS meter on the AC voltage and AC current are true rootmean-square values. The basic meter can only measure the AC average value.
3.1.5.
Auto power off setting
When the meter is powered on, it is under auto power off mode. The meter will power itself off after 10 minutes if there is not any operation. Press SELECT for 2 seconds to wake the meter up.
You can also rotate the rotary switch to the position of OFF and then restart the meter.
To disable the auto power off function, hold down the SELECT key while turning the meter on, then the icon will disappear.
3.2.
Measurement Functions
3.2.1.
AC and DC Voltage measurement
To avoid electrical shock and/or damage to the instrument, do not attempt to take any voltage measurement that might exceeds 1000Vdc or 1000Vac rms.
To avoid electrical shock and/or damage to the instrument, do not apply more than 1000Vdc or
1000Vac rms between that common terminal and the earth ground
Voltage is the difference in electrical potential between two points.
The polarity of ac (alternating current) voltage varies over time; the polarity of dc (direct current) voltage is constant.
To measure ac or dc voltage ( set up and connect the Meter as shown in
Figure 3-1)
1) Set the rotary switch to the position of EF/VOLT.
2) Select auto scan mode or press SELECT key to select between AC and
DC voltage mode.
O
SC
AN
A
UT
EF LT
VO
OFF uA mA
A uA mA
A
V
COM
V
3) Connect the black and red test leads to the COM and V terminals respectively.
4) Connect the test leads to the circuit being measured.
5) Read and displayed value. AC Voltage
A
U
TO
S
E
F
VO
LT uA mA
A
OFF uA mA
A
V
COM
DC Voltage
Figure 3-1 Measuring AC and DC Voltage
Note:
In a case of probe hanging in the air, the voltage inducated by the test leads may cause unstable readings on the display screen, but that will not affect the accuracy of measurement
11
3.2.2.
Non-contact electric field detector (EF mode)
It should be a long-distance In measuring high-voltage. Pay attention to safety
Electric field is a special substance exist in the charge and the variable ambient magnetic field.
To detector Non-contact electric field (set up and connect the Meter as shown in
Figure 3-2):
1) Set the rotary switch to the position of EF/VOLT.
2) Press SELECT key to select non-contact electric field detector mode. When no or less electric field is detected, the LCD shows “EF”
3) Make the detector in the top of the meter approach to the wire. If the detector senses electric field, the strength will be showed on LCD by “-“ not digits type.
And the buzzer will sound. Level 1 (weak) is “-“ and the level 4 (strong) is “----“.
The buzzer frequency depends on the strength of electric field also. The faster beeper means the stronger electric field (ac voltage) is sensed.
Note:
Detection Sensibility: >36V ac rms
Detection distance: <10cm, It’s related to the source value.
CA
N
O
S
A
UT
E
F
LT
VO
OFF uA mA
A uA mA
A uA mA
A
V
COM
U
TO
EF
VO
LT
S
CA
N
OFF uA mA
A
V
COM
Figure 3 - Non-contact electric field detector
3.2.3.
Resistance measurement
To avoid electrical shock and/or damage to the instrument, disconnect circuit power and discharge all high-voltage capacitors before measuring resistance.
Resistance is an opposition to current flow. The unit of resistance is the ohm (Ω). The Meter measures resistance by sending a small current through the circuit. Because this current flows through all possible path between the probes, an in-circuit resistance reading represents the total resistance of all paths between the probes.
To measure resistance ( set up the Meter as shown in figure 3-3):
1) Set the rotary switch to Ω range
2) Select auto scan or press SELECT key to select resistance measuring mode.
3) Connect the black and red leads to the COM and VΩ terminals respectively.
4) Connect the test leads to the circuit being measured.
5) Read the displayed value.
A
UT
EF
VO
LT
SC
AN
OFF uA mA
A uA mA
A
V
COM
Figure 3-3
Measuring Resistance
Note:
In case of performing resistance test on circuit board, it is necessary firstly to turn off power of the circuit board and then perform the measurement. As there may be other parallel circuits, so the displayed value of test is not surely the actual value of the resistor.
12
3.2.4.
Continuity Check
To avoid electrical Shock and/or damage to the instrument, disconnect circuit Power and discharge all high-voltage capacitors before testing for Continuity.
Continuity is a complete path for current flow. The beeper sounds if a circuit is complete. These brief contacts cause the Meter to emit a short beep.
To test continuity (set up the Meter as shown in Figure 3-4):
A
UT
E
O
S
O
V
LT
CA
N
OFF uA mA
A
1) Set the rotary switch to Ω range.
2) Select auto scan mode or press the SELECT key to activate Continuity
Check.
3) Connect the black and red test leads to the COM and Ω terminals uA mA
A
V
COM respectively.
4) Connect the test leads to the resistance in the circuit being measured.
5) When the test lead to the circuit is below 30Ω, a continuous beeping will indicate it.
A
UT
E
V
O
SC
AN O FF uA mA
A uA mA
A
V
CO M
Figure 3-4
Checking the Continuity
3.2.5.
Diode Test
To avoid electrical shock and/or damage to the instrument, disconnect circuit Power and discharge all high-voltage capacitors before testing diodes.
Use the diode test to check diodes, transistors, and other semiconductor devices. The diode test sends a current through the semiconductor junction, then measures the voltage drop across the junction, a good silicon junction drops between 0.5V and 0.8V.
To test a diode out of a circuit (set up the Meter as shown in Figure 3-5):
1) Set the rotary switch to Ω mode.
2) Select the auto scan mode or press the SELECT key to activate Diode
Test.
3) Connect the black and red test leads to the COM and VΩ terminals respectively.
4) For forward-bias readings on any semiconductor component, place the red test lead on the component’s anode and place the black test lead on the component’s cathode.
5) The meter will show the approx. forward voltage of the diode.
Figure 3-5 Testing a Diode
13
In a circuit, a good diode (Si) should still produce a forward bias reading of 0.5V to 0.8V; however, the reverse-bias reading can vary depending on the resistance of other pathways between the probe tips.
3.2.6.
Capacitance measurement
To avoid electrical shock and/or damage to the instrument, disconnect circuit Power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacitor is discharged.
Capacitance is the ability of a component to store an electrical charge.
The unit of capacitance is the farad (F). Most capacitors are in the nanofarad to microfarad range. The meter measures capacitance by charging the capacitor with a known current for a known period of time, measuring the resulting voltage, then calculating the capacitance.
The measurement takes about 1 second per range.
To measure capacitance (set up the Meter as shown in Figure 3-6):
A
UT
E
VO
LT
SC
AN OFF uA mA
A uA mA
V
1) Set the rotary switch to Ω range.
A COM
Figure 3-6 Measuring Capacitance
2) Select the auto scan mode or press the SELECT key to activate capacitance measuring mode.
3) Connect the black and red test leads to the COM and terminals respectively.
4) Connect the test leads to the capacitor being measured and read the displayed value.
Note:
The meter may take a few seconds to stabilize reading when measurement on 600uF~60mF.
To improve the accuracy of measurement less than 600nF, subtract the residual capacitance of the
Meter and leads.
3.2.7.
Current Measurement
To avoid damage to the Meter or injury if the fuse blows, never attempt an In-circuit current measurement where the open-circuit potential to earth is greater than 1000V.
To avoid damage to the meter, check the meter’s fuse before proceeding. Use the proper terminals, function, and range for your measurement. Never place the probes in parallel with a circuit or component when the leads are plugged into the current terminals.
Current is the flow of electrons through a conductor.
To measure current (set up the Meter as shown in Figure 3-7):
1) Turn off power to the circuit. Discharge all high voltage capacitors.
2) Set the rotary switch to the µA, mA or A range.
3) Select the auto scan mode or press the SELECT key to select
DCA or ACA measuring mode.
Figure 3-7 Measuring Current
14
4) Connect the black test lead to the COM terminal and the red test leads to the µA/mA terminal for a maximum of 600mA. For a maximum of 10A, move the red test lead to the A terminal.
5) Break the circuit path to be tested. Touch the black probe to the more negative side of the break; touch the red probe to the more positive side of the break. (Reversing the leads will give a negative reading, but will not damage the Meter.
6) Turn on power to the circuit; then read the display. Be sure to the note the measurement units at the right side of the display (µA, mA or A). When only the figure “OL” displayed, it indicates overrange situation and the higher range has to be selected.
7) Turn off power to the circuit and discharge all high voltage capacitors. Remove the Meter and restore the circuit to normal operation.
4.
TECHNICAL SPECIFICATIONS
4.1.
General Specifications
Environment conditions: 1000V CAT III and 600V CAT IV
Pollution degree:
Altitude:
2
<2000m
Operating temperature:
Storage temperature:
Temperature Coefficient:
MAX Voltage between terminals and earth ground:
Fuse Protection:
Sample Rate:
Display:
Range selection:
Over Range indication:
0~40°C, 32°F~122°F(<80%RH, <10°C non-condensing)
-10~60°C,14°F~140°F(<70% RH, battery removed)
0.1x(specified accuracy)/°C(<18°C or >28°C)
1000V AC rms or 1000V DC.
µA and mA: F 0.63A/1000VØ10.3x38;A:F
10A/1000VØ10.3x38
3 times/sec for digital data
3 5/6 digits LCD display. Automatic indication of functions and symbols. automatic and manual
LCD will display “OL”
Low battery indication:
Polarity indication:
The is displayed when the battery is under the proper operation range.
“-“ displayed automatically
Power source:
Battery type:
9V
6F22
Dimension: 190(L)x90(W)x40(H) mm
Weight: 500g.Approx. (battery included).
4.2.
Measurement specification
Accuracy is specified for one year after calibration, at operating temperatures of 18°C to 28°C, with relative humidity at less than 80%.
Accuracy specification take the from of: ± (% of Reading + Number of Least Significant Digits)
15
4.2.1.
AC Voltage
ACV:
Range
600mV
6V
60V
Resolution
0,1mV
1mV
10mV
60Hz
±(1,0% +3)
Accuracy
40Hz~400Hz
±(1,0% +3)
±(1,0% +3)
600V
1000V
100mV
1V
±(1,0% +3)
±(1,5% +5)
Above accuracies can be guaranteed within 5%~100% of the full range.
The true RMS meter has residual value within 10 counts when the test leads are shorten, but that will not affect the accuracy of measurement.
4.2.2.
DC Voltage
DCV:
Range Resolution Accuracy
600mV
6V
0,1mV
1mV
±(0,5% +5)
±(0,8% +5)
60V
600V
10mV
100mV
±(0,8% +5)
±(0,8% +5)
1000V 1V
4.2.3.
Resistance
Range
600.0
Ω
6.000k
Ω
60.00k
Ω
600.0k
Ω
6.000M
Ω
60.00M
Ω
4.2.4.
Continuity Check
Function
Resolution
0.1
Ω
1
Ω
10
Ω
100
Ω
1k
Ω
10k
Ω
Range
600
Ω
Description: Continuity beeper ≤30Ω
4.2.5.
Diode Test
Range Resolution Test Condition
2 V 0,001V Forward DC Current: approx. 1mA
Reversed DC Voltage: approx. 2.8V
±(1,0% +2)
Accuracy
±(1.2% +2)
±(2% +5)
Resolution
0.1
Ω
16
Test Condition: Forward DC current approximately 1mA. Reversed DC voltage approximately 2.8V
4.2.6.
Capacitance
Range Resolution Accuracy
6nF
60nF
600nF
6
µ
F
60
µ
F
600
µ
F
6mF
1pF
10pF
100pF
1nF
10nF
100nF
1
µ
F
10
µ
F
±(5,0% +5)
±(3,0% +3)
±(5,0% +3) uncertainty 60mF
4.2.7.
Current
DCA:
Range
600
µ
A
6000
µ
A
60mA
600mA
10A
Resolution
0.1
µ
A
1
µ
A
0.01mA
0.1mA
10mA
Accuracy
±(1.0% +3)
±(1.5% +3)
±(1.8% +5)
ACA:
Range
600
µ
A
6000
µ
A
60mA
600mA
10A
Resolution
0.1
µ
A
1
µ
A
0.01mA
0.1mA
10mA
Accuracy
±(1.5% +5)
±(1.8% +8)
±(2% +8)
Above accuracies can be guaranteed within 5%~100% of the full range.
The true RMS meter has residual value within 10 count when the test leads are shorten, but that will not affect the accuracy of measurement.
Overload protection: F 10A/1000V fuse for 10A range
Maximum input current:
F 0.63A/1000V fuse for µA and mA ranges
600mA dc or 600mA ac rms for µA and mA ranges
10A dc or 10A ac rms for 10 A ranges.
For measurements >6A, 4 minutes maximum ON to measure 10 minutes OFF; above 10A unspecified.
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4.2.8.
Linear Frequency
Range
6kHZ
10KHZ
Resolution
0,001HZ
0,01HZ
Accuracy
±(0,05% +8)
Above accuracies can be guaranteed withni 10%~100% of the full range.
5. MAINTENANCE
This section provides basic maintenance information, including fuse and battery replacement instructions. Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information.
5.1.
General Maintenance
To avoid electrical shock or damage to the meter, do not get water inside the case.
Remove the test leads and any input signals before opening the case.
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.
Dirt or moisture in the terminals can affect readings.
To clean the terminals:
Turn the meter off and remove all test leads.
Shake out any dirt that may be in the terminals.
Soak a new swab with a cleaning and oiling agent (such as WD-40)
Work the swab around in each terminal. The oiling agent insulates the terminals from moisturerelated contamination.
5.2.
Fuse replacement
Before replacing the fuse, disconnect test Leeds and/o any connectors from any circuit under test. To prevent damage or injury replace the fuse only with specified ratings.
1) Set rotary switch to the OFF position
2) Disconnect test leads and/or any connectors from the terminals.
3) Use a screwdriver to unlock the four screws on the rear cover
4) Take out the rear cover from the meter.
5) Remove the fuse by gently prying one end loose, then sliding the fuse out of its bracket.
6) Install the replacement fuses only with specified ratings: F 0.63A/1000VØ10.3x38 and
F 10A/1000VØ10.3x3x38
7) Rejoin the rear cover and tighten the screws.
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5.3.
Battery replacement
To avoid false Reading, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator ( ) appears. Before replacing the battery, disconnect test leads and/or any connectors from any circuit under test, turn the meter off and remove test leads from the input terminals.
1) Set rotary switch to the OFF position.
2) Disconnect test leads and/or any connectors from the terminals.
3) Use a screwdriver to unlock the two screws on the battery cover.
4) Take out the battery cover from the meter.
5) Remove the used battery
6) Replace with one new 9V battery (6F22)
7) Rejoin the battery cover and tighten the screws.
6. ACCESSORIES
Delivered with the multimeter:
User’s manual: one piece
Test leads: one piece
If there are some changes in accessories, please refer to the real product as standard.
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Key features
- True RMS measurement
- Non-contact electric field detection
- Diode test function
- Auto scan mode
- Data Hold mode
- Manual ranging
- Auto power off setting