Duratool D03127 User manual

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MODEL: D03127
Digital Multimeter, Pen Type

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CONTENTS
Page Number Description
3 Important Safety Information
3 Electrical Symbols
4 Overview
4 Measurement Operation
5 AC & DC Voltage Measurement
5 AC & DC Current Measurement
5 Resistance Measurement
6 Diode Measurement
6Connectivity Test
6 Non-contact Voltage Detection
6General Technical Specication
7Accuracy Specications
8 Cleaning & Maintenance
8 Replacing the Batteries

3
IMPORTANT SAFETY INFORMATION
Please read these instructions carefully before use and retain for future
reference.
• When using electrical appliances basic safety precautions should always be
followed.
• Before use, check that there is no damage to the instrument, there is no metal
exposed or sign of wear to the insulating layer of the probe.
• Do not touch the charged body with voltage exceeding 30V AC RMS, 42V AC or
60V DC.
• When the low battery indicator is displayed, replace the battery immediately to
avoid any potential measurement error.
• The input measurement voltage should not exceed the rated value regulated by
the instrument.
• Do not use the instrument around explosive gas, steam or in a wet environment.
• When measuring, connect the zero/ground line rst, then connect the live wire.
• When disconnecting, ensure you disconnect the live wire rst and then disconnect
the zero line and ground line.
• When measuring, ensure your ngers are behind the nger protector of the probe.
• Do not use the instrument in the event of a single element, whose rating is the
lowest in the instrument, probe or accessories, exceeding the measurement
category (CAT) ratings.
ELECTRICAL SYMBOLS
Symbol Description
High voltage warning.
AC (Alternating Current).
DC (Direct Current).
AC or DC.
Warning. Important safety information.
Ground.
Fuse.
Equipment with double insulation protection.
CAT III CAT III measurement is suitable for test and measurement of circuits
which are connected to the mains installation of a building.
~
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OVERVIEW
1
2
3
4
5
6
7
8
Number Description
1 Test probe
2 Light
3 Non-contact voltage induction area
4 Non-contact voltage indicator
5 Rotary dial
6 Display
7
Buttons:
• Data Hold
• Range Select
• Backlight and Light - press and
hold for more than two seconds
to turn the backlight on. Press
and hold for two more seconds
to turn off.
8 Black probe
MEASUREMENT OPERATION
Manual & Automatic Range
• The instrument is equipped with manual and automatic range. In automatic range
mode, the instrument will select the best range for the input signal detected. This
way the user does not need to re-select range when changing the measuring
signal.
• The instrument can also be set to manual range.
• The default mode is automatic range mode after the unit is turned the default
mode is automatic range on or the function is switched, the instrument displays
“AUTO” symbol.
• The operations of entering or quitting manual range are as follows:
- In automatic range mode, press the “Range” button. The “AUTO” symbol will
be hidden.
- Press the “Range” button to increase the range. When the maximum range
is reached it will return to the minimum range.
- Press and hold the “Range” button for two seconds to quit manual range
mode. The instrument will display the “AUTO” symbol.
Note: There is only one range for connectivity and diode function.
If there is no operation for 15 minutes after being turned on, the instrument will make
ve short sounds.
One minute later, it will make a longer sound before automatically turning off.
After automatic turn-off, press any button between “FUNC.” and “HOLD” and the
instrument will turn back on.
By pressing the “FUNC.” button to turn the instrument back on, it will cancel the

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AC & DC VOLTAGE MEASUREMENT
• Move the rotary dial to , press the “FUNC.” button and select DC or AC voltage
measurement.
• Connect the probe to be measured to the circuit or power supply in parallel and
measure the voltage.
• Read the measurement on the screen. When measuring DC voltage, the display
also shows the voltage polarity of the red probe test point.
Warning
• Do not input voltage above 600V as there is a risk of damaging the instrument.
• After completing all measurements, always disconnect the probe and the
measured circuit.
AC & DC CURRENT MEASUREMENT
• Move the rotary dial to the position, press the “FUNC.” button and select DC
or AC current measurement.
• Cut off the power supply to the measured circuit and discharge all of the high
voltage capacitors on the measured circuit.
• Disconnect the circuit to be tested and connect the instrument to the circuit to be
measured in series.
• Connect to the power supply of the circuit and then read the measurement on the
screen. When measuring DC current, the display also shows the voltage polarity of
the red probe test point.
Note: If “OL” is displayed it means that the instrument exceeds the measurement range
of the instrument.
• Disconnect the circuit to be tested, remove the probe of the instrument and restore
the circuit.
Warning
• Do not input current above 200mA, otherwise the fuse in the instrument may be
burned.
• Disconnect the power supply of the measured circuit rstly and fully discharge all
high voltage capacitors, then connect the instrument to the circuit in series.
• After completing all measurements, always disconnect the probe and the
measured circuit.
RESISTANCE MEASUREMENT
• Move the rotary dial to the position. Note: If it’s not in the resistance
measurement function, press “FUNC.” to switch to resistance measurement
function.
• Connect the probe to the circuit to be measured in parallel and measure the
resistance.
• Read the measurement result of the screen.
Warning
• Firstly, disconnect the power supply of the circuit to be measured and fully
discharge all high voltage capacitors.
• After completing all measurements, always disconnect the probe and the
measured circuit.

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DIODE MEASUREMENT
• Move the rotary dial to the position and switch to the diode function.
• Contact the red probe to the anode of the measured diode, and the black probe to
the cathode of the measured diode.
• The reading on the screen is the approximate value of the diode forward voltage
drop. If it is connected in reverse, it will display “OL”.
Warning
• Firstly, disconnect the power supply of the circuit and discharge all high voltage
capacitors.
• If the diode to be tested is an open circuit or with reverse polarity, the instrument
will display “OL”.
• After completing all measurements, always disconnect the probe and the
measured circuit.
CONNECTIVITY TEST
• Move the rotary dial to the position, press “FUNC.” and switch to the
connectivity function.
• Contact the probe to both ends of the measured circuit. When the resistance of the
measured circuit is below 50Ω, the buzzer will sound.
Warning
• Firstly, disconnect the power supply of the circuit to be measured and fully
discharge all high voltage capacitors.
• After completing all measurements, always disconnect the probe and the
measured circuit.
NON-CONTACT VOLTAGE DETECTION
• Move the rotary knob of the instrument to NCV.
• Approach the non-contact voltage induction area of the instrument to the live wire
of the AC voltage (less than 5mm).
• The non-contact voltage indicating light of the instrument will light up. At the same
time there is a ‘beep’, which indicates that there is AC voltage on the re wire.
GENERAL TECHNICAL SPECIFICATION
Environmental conditions
for use
IEC/EN 61010-1 600V CAT III, pollution level 2, altitude
<2000m
Working environment
temperature & humidity 0~40°C
Storage environment
temperature & humidity -10~60°C (remove the battery when it is below 70%RH)
Temperature coefcient 0.1 x accuracy/°C
Max. Voltage allowed
between measuring
terminal and ground
DC or AC 600V RMS
Fuse Protection Fuse FF 250mA/600V
Sampling rate About 3 times/second

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Display 3½ LCD screen
Super range indication LCD display screen will display “OL”
Low battery indication will be displayed on the screen
Input polarity indication Automatically displays “-”
Power supply 2 x 1.5V AAA batteries
Dimensions 225mm x 38mm x 26mm
ACCURACY SPECIFICATIONS
• The accuracy is applicable within one year of calibration.
• Reference conditions: the environmental temperature is 18°C to 28°C and relative
humidity is no more than 80%.
DC Voltage
Range Resolution Accuracy
200mV 0.1mV
± (0.5% reading + 3)
2V 0.001V
20V 0.01V
200V 0.1V
600V 1V ± (0.8% reading + 5)
• Input impedance:
10MΩ.
• Maximum input
voltage: DC or AC
600V RMS.
AC Voltage
Range Resolution Accuracy
2V 0.001V
± (0.8% reading + 3)20V 0.01V
200V 0.1V
600V 1V ± (1.0% reading + 5)
• Input impedance:
10MΩ.
• Maximum input
voltage: DC or AC
600V RMS.
• Frequency range:
40Hz~400Hz
DC Current
Range Resolution Accuracy
20mA 0.01mA ± (1.8% reading + 5)
200mA 0.1mA
• Input protection:
FF250mA/600V fuse.
AC Current
Range Resolution Accuracy
20mA 0.01mA ± (2.0% reading + 5)
200mA 0.1mA
• Input protection:
FF250mA/600V fuse.

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Resistance
Range Resolution Accuracy
200Ω 0.1Ω
± (1.0% reading + 3)
2kΩ 0.001kΩ
20kΩ 0.01kΩ
200kΩ 0.1kΩ
2MΩ 0.001MΩ
20MΩ 0.01MΩ ± (1.2% reading + 15)
• Input protection:
Maximum DC or AC
600V RMS
• Input protection: Maximum DC or AC 600V RMS.
CLEANING & MAINTENANCE
• Clean the outer cabinet of the instrument with a clean, damp cloth and a small
amount of mild detergent.
• Do not use any chemicals, abrasives or solvents that could damage the meter.
Diode
Function Range Resolution Test Environment
Diode test 1V 0.001V
Testing current: about 1mA; open circuit
voltage: about 2.8V.
The display will show the approximate
value of the diode forward voltage drop.
Buzzer On/Off
Function Description Test Environment
When the built-in buzzer sounds,
the measured resistance is no
more than about 50Ω.
Testing current: about 1mA; open
circuit voltage: about 2.8V.
• Input protection: Maximum DC or AC 600V RMS.
REPLACING THE BATTERIES
• Turn off the power supply and disconnect the probe from the measured circuit.
• Loosen the screws used for xing the battery cover and remove the battery cover.
• Remove the old batteries and replace with new ones.
• Mount the battery cover and and tighten the screws.
RECYCLING INFORMATION
This symbol indicates that separate collection of Waste Electrical and
Electronic Equipment (WEEE) or waste batteries is required. Do not dispose
of these items with general household waste. Separate for the treatment,
recovery and recycling of the materials used. Waste batteries can be returned
to any waste battery recycling point which are provided by most battery
retailers. Contact your local authority for details of the battery and WEEE
recycling schemes available in your area.
Made in China. PR2 9PP
V 1.0