ANENG 621A Intelligent Digital Multimeter User Manual

1. Safety Information

Warning: To fully understand the function of the meter and ensure safe operation, please read and follow this manual carefully. Special care should be taken when using this meter; improper use may cause electric shock or damage to the meter. Follow usual safety regulations and take effective safety precautions.

The instrument meets the safety requirements of IEC-61010-1, IEC-61010-2-030, IEC-61010-2-032) electronic measuring instruments, belongs to secondary pollution, and the overvoltage standard is CAT III 600V. Please follow the safety operation guide and use the meter safely.

1.1 Safety Instructions

• When using the meter, users must follow standard safety rules: Universal protection against electric shock, Prevent misuse of meter.
• After receiving the meter, check for damage in transit.
• After storage and shipment in poor condition, check and confirm whether the meter is damaged.
• The pen must be in good condition. Before use, check whether the insulation of the pen is damaged and whether the metal wire of the wire is exposed.

1.2 Electrical Symbols

• Note: For important safety information, please refer to the instruction manual.
• Can be used on dangerous charged objects.
• Double insulation protection (Class II).
• CAT III: In accordance with IEC-61010-1 overvoltage (installation) Class II, contamination level 2 refers to the level of voltage protection provided to withstand pulses.

1.3 Maintenance

• Do not attempt to open the bottom case to adjust or repair the instrument. Such operations should only be performed by technicians who are fully aware of the instrument and the risks of electric shock.
• The pen should be removed from the line under test before opening the instrument backing.
• To avoid electric shocks that may be caused by incorrect readings, charge the meter immediately when it shows the "?" symbol.
• Clean the meter with a damp cloth and mild detergent. Do not use abrasives or solvents.
• Turn off the power when the meter is not in use.
• The meter cannot be charged for a long time. After being fully charged, unplug the Type-c line charging cable.

2. Description

2.1 Part Name

1 Non-contact voltage detection sensing area

2 Type-c charging cable port

3 LCD touch button

4 Display

5 Input socket

6 The power button

(Diagram of the multimeter with numbered parts is described here)

2.2 LCD Touch Display

The LCD displays various symbols and readings:

3. Technical Indicators

Gauges shall be specified for a period of one year, between 18°C and 28°C, with relative humidity less than 75% condition.

3.1 Comprehensive Indicators

1. Automatic selection of measuring function and range.
2. Full range overload protection.
3. The maximum voltage between the measuring end and the ground is 1000V DC or 750V AC.
4. Working height: maximum 2000m.
5. Display: LCD.
6. The maximum display value is 9999 digits.
7. Polarity indication: automatic indication, '-' indicates negative polarity.
8. Superview display: 'OL' or '-OL'.
9. Sampling time: about 3 times/second.
10. Unit display: with function, electric quantity unit display.
11. Automatic shutdown time: 15 minutes.
12. Power supply: 3.7V/600mAh lithium battery.
13. Battery undervoltage indicator: LCD ? symbol.
14. Temperature coefficient: less than 0.1X accuracy /°C.
15. Operating temperature: 0° C-40 °C.
16. Storage temperature: -10°C- 50°C.

3.2 Technical Indicators

3.2.1 Alternating current

Minimum input current 20mA AC current. Maximum input current 10A AC current. Frequency range: 40HZ-1000Hz.

3.2.2 DC current

Minimum input current 20mA DC current. Maximum input current 10A DC current.

3.2.3 DC voltage

In AUTO mode, the input voltage ranges from 0.5V to 1000V DC. The input voltage ranges from 0.0mV to 999.9mV DC in mV mode.

Note: In the mV range, with the input open, the meter may have a pulsating reading. This is normal because of the high sensitivity of the meter when connected to the pen. When you measure the circuit, you get a true measurement.

3.2.4 AC voltage

In AUTO mode, the input voltage ranges from 0.5V to 1000V AC. In mV mode, the input voltage ranges from 0.0mV to 999.9mV AC. Frequency rate pattern: 40HZ-1000Hz.

3.2.5 Line connection test

Overload protection: 600V DC or AC (valid value).

3.2.6 Resistance

Input protection: maximum 600V DC or AC valid value.

3.2.7 Diode

Input protection: the maximum value is 600V DC or AC.

3.2.8 Capacitance

Input protection: the maximum value is 600V DC or AC.

3.2.9 The temperature

Accuracy does not include error of thermocouple probe. Overload protection 250V DC or AC (valid value).

3.2.10 Frequency

3.2.10.1 Pass grade A:

Measuring range: 40HZ-1000Hz. Input signal pattern: > 3A AC current (Effective Value).

3.2.10.2 Through V gear:

Measuring range: 40HZ-1000Hz. Input signal pattern: > 0.8V AC current (Effective value).

4. Operating Instructions

4.1 Reading Hold

In the process of measurement, if you need to hold the reading, touch the "H" key; the display value will be locked. Touch the "H" key again to remove the reading hold.

4.2 Flashlight

Touch the "?" button to turn on the lighting function of the flashlight barrel, which will be automatically turned off after about 1 minute.

4.3 Automatic Shutdown

• If there is no operation within 15 minutes after startup, the meter will enter hibernation state and automatically shut down to save electric energy. The buzzer has one sound one minute before the shutdown.
• After automatic shutdown, press the power button to wake up the instrument to work.

4.4 Preparation before measurement

• Tap the power source button to power on. If the battery voltage is low (about 2.8V), the monitor will display "?" symbol, then should charge. Press the power button again to turn it off.
• When the instrument is not measured, the instrument enters the automatic scanning state and the instrument displays "AUTO".

4.5 Non-contact Voltage Detection (NCV)

• Touch the NCV key to enable the NCV function, and the instrument displays NCV.
• The NCV sensor is placed close to the measured wire, and the instrument can detect whether the measured wire is gt. 90V AC voltage. When the meter detects the AC power, the meter buzzer alarms and the LCD analog bar displays the induction intensity.

(Diagram showing NCV detection is described here)

Note:

1. Voltage may still exist even if there is no alarm indication. Do not rely on contactless voltage detectors to see if there's a voltage on the wire. Probe operation may depend on socket design, insulation thickness, and different types of factors such as the impact.
2. In NCV mode, the meter does not measure voltage, resistance, and current at the same time.

4.6 AC-DC Current Measurement

• Insert the stylus into the 10A current input hole, and the current input terminal is inserted into the stylus automatic identification function. Automatically enters the default DC current gear of the current gear system. Remove the 10A current input hole and the stylus automatically jumps out of the current gear and enters the AUTO measurement mode.

Note: When the meter is in diode gear, the pen is inserted into the 10A input hole and the meter will not enter current gear.

• Connect the pen into the measured signal, when the measured signal > 20mA, the meter will display the current measured value. When measured AC signal > 3000mA, the instrument pair displays the AC current frequency.

4.7 DC Voltage Measurement

Insert the black stylus into the COM jack and the red stylus into the V jack. Connect the markers together. The voltage source or load ends are measured and read on the LCD.

AUTO automatic measurement mode: When the measured signal > 0.5V, the meter will display the current measured DC voltage value. When the signal being measured is < 0.5V, the meter will default to the resistance value and display the internal resistance value of the measured signal. Touch the "mV" key to switch to the DC mV voltage level. Connect the pen to both ends of the voltage source or load for measurement, reading on the LCD.

DC mV measurement mode: when the measured signal < At 600.0mV, the meter will display the current measured DC voltage value. When the measured signal > At 999.9mV, the meter will display "OL".

(Diagram showing DC voltage measurement is described here)

4.8 AC Voltage Measurement

Insert the black stylus into the COM jack and the red stylus into the V jack. Connect the pen to both ends of the voltage source or load for measurement, reading on the LCD.

AUTO automatic measurement mode: when the measured signal > At 0.5V, the meter will display the current measured AC voltage value. When the signal being measured is < 0.5V, the instrument will default to the resistance value, display the measured signal internal resistance value. Touch the "mV" key to switch to AC mV voltage. Connect the pen to both ends of the voltage source or load for measurement, reading on the LCD.

AC mV measurement mode: when the measured signal < At 600.0mV, the meter will display the current measured AC voltage value. When the signal is measured > At 999.9mV, the meter will display "OL".

(Diagram showing AC voltage measurement is described here)

4.9 Resistance Measurement

Warning: When measuring the impedance on the line, make sure that the circuit is disconnected and the capacitor on the circuit discharges completely.

• Insert the black stylus into the COM jack and the red stylus into the "Ω" jack.
• AUTO AUTO range tap. At this time, the meter is in automatic scanning state.
• Connect the pen to the measured resistance or both ends of the line for measurement, reading in the LCD display.

Note:

1. When the input is open, the LCD will display the "OL" overrange status.
2. If the resistance being measured is higher than 10MΩ, the meter may take several seconds to stabilize the reading, which is normal for high resistance readings.

(Diagram showing resistance measurement is described here)

4.10 The Line of Fire Test

• Touch the "Live" key to switch to LIVE gear, the instrument shows Live.
• Connect the red test pen to the Live input socket. Insert the single pen into the power socket L jack or close to the live wire. If the instrument detects AC voltage, it will display voltage signal strength according to the detected signal strength, and the buzzer will give alarm sound of different intensity.

4.11 Capacitance Measurement

• Touch the "뮤" key to switch capacitor gear.
• Use the other end of the test pen to measure the capacitance value of the capacitor to be measured and read the measured value from the LCD.

Note:

1. When measuring large capacitors, a fixed time is required to stabilize readings.
2. When measuring polar capacitors, pay attention to the corresponding polarity to avoid damaging the instrument.

4.12 Temperature Measurement

Touch "SEL" key to switch TEMP file, thermocouple red plug into the end of °C/°F, black plug into the COM jack. When the reading is stable, the temperature can be read directly from the display screen.

Note: The maximum measurement temperature of type K thermocouple is 250°, instantaneous measurement up to 300°C.

4.13 Diode Test

• Insert the black stylus into the COM jack and the red stylus into the "►" jack.
• Touch SEL key to switch to diode position.
• Connect the red stylus to the diode anode and the black stylus to the diode cathode for testing.

Note: The meter displays an approximation of the forward voltage drop of the diode. If the pen is connected inversely or the pen is open, the LCD displays "OL".

(Diagram showing diode test is described here)

4.14 Line Connection Test

Warning: Danger of electric shock. When testing the circuit on and off, make sure the circuit is disconnected and the capacitor on the circuit is completely discharged.

• Insert the black marker into the COM jack and the red marker into the "))" jack.
• Touch the "SEL" key to switch to the line connection test state.
• Connect the pen to both ends of the line for measurement. If the resistance of the measured line is less than 50 Ω, the buzzer inside the meter will sound.

Note: If the meter is open or the resistance of the measured line is greater than 999.9Ω, "OL" is displayed.

(Diagram showing line connection test is described here)

5. Maintenance

5.1 Type - c Line Charging

Warning: During the charging process, the meter pen should be removed from the measuring circuit to avoid the danger of electric shock.

If the "?" symbol appears, it means to charge.

5.2 Replace the Test Pen

Warning: When replacing the stylus, you must replace the same or the same grade of the table. Pen meter must be in good condition, pen grade: 1000V 10A.

Note: If the insulation layer of the pen is damaged, such as exposed wire of the wire, the pen must be replaced.

6. The Attachment

• Test the pen (Grade: 1000V 10A)
• Directions for use
• Thermocouple
• Charging line (Type-c)

(Information about attachments like 'A pair of', 'A copy of the' is noted here)