NOYAFA NF-620 Smart Pen Digital Multimeter Instruction Manual

NOYAFA NF-620 Smart Pen Digital Multimeter

Smart Pen Multimeter

A Read the precautions before your operation

• The When effective measuring value of voltage, 1 000V do not DC input and a 700V limit AC. voltage exceeding
• The voltage at the current range of 36V is a safe voltage.
• Leave When the changing test point functions first. and ranges, the test leads should 0 Choose the correct function and range and beware of incorrect

Overview

NF-620 pen type multimeter is a pocket-sized 3 5/6digit true RMS pen type smart multimeter. Based on the input voltage/ resistance, the meter will automatically identify and measure DC voltage/AC voltage/resistance. II can also be manually switched to measure capacitance, diodes, continuity testing, as well as induction pen, zero live line judgment, phase sequence measurement and other functions. stable NF-620 is performance, popular high among precision, users high due to reliability, its easy clear portability, readings, overload protection and other functions.

Product Usage

DC voltage/AC voltage automatic scanning test (DCV/ACV)

Input impedance: 10M :

Overload protection : true RMS measurement, frequency response is 50Hz- 800Hz, DC1000 or 700V AC peak value. The specific operation is as follows:

1. Press and hold POWER for more than 2S, and it will display in automatic scanning state “AUTO”.
2. Insert the black test lead into the “COM” tail jack, and the positive electrode is the tip of the front end; the tip of the test pen is in reliable contact with the measured point.
3. When the measured voltage between the input port “COM” and the “pen tip” is greater than 0.8V, regardless of the AC voltage or the DC voltage, the meter will compare the DC component and the AC component, take the larger component signal, and then according to the measured value The size is automatically switched between DC6V/60V/600V/1000V, AC6V/60V/600V/700Vand then the measured value is displayed on the LCD.

Notice :

• If The it input exceeds, voltage there is must a risk not of exceed damaging DC1 the meter 000VORAC700V. circuit; when electric shock. high-voltage circuits, pay special attention to avoid
• The After test leads completing from all the circuit measurement under test. operations, disconnect

 Resistance(C)

Accuracy
Range| NF-620| Resolution
---|---|---
6000| ± (0.8%+5)| 0.10
6kO| ± (0.8%+3)| 10
60kO| 100
600kO| 1000
6MO| 1kO
60MO| ± (2.5%+3)| 10kO

Input impedance: 10 M

Overload protection: DC1000, AC 700V peak value.

1. The specific operation is as follows:
   The boot display is automatic scanning state “AUTO”.

2. Insert positive the electrode black test is the lead tip of into the the front “COM” end; tail the tip jack, of the and test the pen is in reliable contact with the measured point.

3. If than the 500, measured the buzzer resistance will at emit a both ends continuous of the test beep, lead and is quick less to buzzer enter the measurement buzzer quick is required, measurement. please press the power key

4. If the you are resistance measuring at both closed ends of loop the resistance, resistance you to must be measured. discharge meter Otherwise, will if mistake the ii voltage for in  voltage the loop is measurement greater than and 0.BV, enter the the voltage measurement mode.

5. port Enter the “COM” and resistance “pen tip”, the measurement meter will value between automatically the switch input between resistance measurement 600O/6kQ/60kO600kQ/6MQ/60MQ value, and then the according measured lo value the will be displayed on the LCD.

Notice:

1. When measuring low resistance, the test leads will bring internal resistance. In order to obtain accurate readings, you can record the short circuit value of the test leads first, and subtract the value when the test leads are short circuited from the measurement readings.
2. When measuring online resistance, all power supplies of the circuit under test must be turned off and all capacitors must be completely discharged to ensure the correct measurement value.

Fast continuity test/diode/capacitor

open circuit voltage is about 3V
The buzzer sounds for a long time, and the resistance of the two test points is less than (50±20)| Open circuit voltage is about0.4V, press “power to switch between two functions

Capacitance(C)

Accuracy
Range| NF-620| Resolution
---|---|---
10nF| ± (3.5%+20)| 10pF
100nF| 100pF
1uF| 1nF
10uF| 10nF
100uF| 100nF
1mF| 1uF
10mF| 10uF
60mF| ± (5%+3)| 100uF

Overload protection: DC1000, AC 700V peak value.

1.  The power-on display shows the automatic scanning state “AUTO”
2. Insert the black test lead into the “COM” tail jack, and the positive electrode is the tip of the front end; the tip of the test pen is in reliable contact with the measured point.
3. If you need fast continuity test/diode/capacitance measurement, constantly trigger the “power” switch, enter the fast continuity test/diode/capacitance measurement in one cycle, and select the corresponding function measurement according to the measurement requirements. When measuring the capacitance, the measured capacitance The size will automatically select different ranges, and the measured value will be displayed on the LCD. The capacitance measurement range is 1 0nF/1 00nF/ 1 uF/1 0uF/1 00uF/1 mF/1 0mF/60mF.

Notice:

1. When measuring capacitance in the 1 0nF range, there may be residual readings in the value displayed on the screen. This number is the distributed capacitance of the test leads and is an accurate reading. You can subtract this value after the measurement.
2. When the large capacitance file is measuring serious leakage or breakdown capacitance, some values will be displayed and unstable; when measuring large capacitance, the reading will take a few seconds to stabilize, which is normal when measuring large capacitance.
3. Please fully discharge the capacitor before testing the capacitance, otherwise it will enter the voltage measurement mode.
4. Unit: 1 F=1 000mF 1 mF=1 000uF 1 uF =1000nF 1 nF=1 000pF.

 NCV/LIVE/phase sequence measurement

The operation is as follows:

1.  Power-on state is automatic scanning state.
2.  Trigger the “NCV/LIVE/P” key; enter the electric field measurement EF/zero fire/measure LIVE/phase sequence measurement P respectively. and switch between auto/EF/LIVE/P in turn.

NCV measurement: trigger the “NCV/LIVE/P” key; enter the EF measurement, the LCD displays “EF”, when the pen tip is close to the power test point (the measured frequency is S0Hz/ 60Hz), the LCD will display different according to the signal strength The buzzer will make different sounds, and the indicator will also emit different lights according to the strength of the signal, green light when weak, and red light when strong.

• LIVE measurement: Trigger the “NCV/LIVE/P” key twice; enter the LIVE measurement, the LCD will display “LIVE”. When the pen tip reliably touches the live wire test point, the
• LCD will display OL, and the buzzer will emit a continuous beep and indicate at the same time The lamp glows red.
• Non-Contact PHASE measurement: Front end positive electrode of a test lead for phase measurement close to the test.
• Trigger the “NCV/LIVE/P” key three times; enter the phase sequence measurement, the LCD displays PA, the display screen A keeps flashing, and the sensor tip is pressed tightly to the first; The first phase wire, wait for a beep; display the blinking B symbol, close the meter pen tip to the second phase wire, wait for a beep, display the flashing C symbol, place the meter pen tip close to the second phase wire, and wail for the beep After the test is completed, the display screen will display the test result on the screen.

Notice :

1. Please slick the pen lip lo the phase line.

2. The shielded wire/cable and the thickness of the insulation material will affect the measurement results. If the cable shielding affects the measurement, you can measure near
   the exposed port.

3. When the pen tip is close to the measurement, try to be close to the phase line vertically, separate the phases as much as  possible, and do not cross between several phase lines, which will cause mutual interference.

4.   The symbol means left-handed.

5. Symbol means right hand.

6. Please complete the three phase sequence lest within 1 minute, otherwise an error will occur; if an error occurs during measurement, please trigger the “NCV/LIVE/P” key to re­
   measure,

Temperature measurement {°C/° F)

Accuracy
Range| NF-620| Resolution
---|---|---
(-20-50 )°C| ± (1.0%+5) <50°C| 1°C
(0-122 )°F| ± (0.75%+5) <122°F| 1°F

Overload protection: DC1000, AC 700V peak value.

1. The boot display is automatic scanning state “AUTO”
2. Trigger the power button, you can manually switch to: DC voltage (automatic measurement without threshold voltage) → AC voltage (automatic measurement without threshold voltage) → diode → fast buzzer capacitance → temperature measurement (°C/°F), cycle in turn.
3. Only show room temperature.

Auto-Off
When the meter is out of use for about 5 minutes, the meter will automatically power off and enter the dormant state; if you want to restart the power, press and hold the “power” button for more than 2 seconds, the LCD will display automatic scanning “AUTO”, and there will be an automatic shutdown symbol “APO”

1. When the user is operating and measuring, it will not shut down
2. The base number of the capacitor file is within 100 characters and the ACV is within 5 characters, it will automatically shut down. When the display value of the capacitor file is greater than 100 characters, the ACV is greater than the displayed value and greater than 5 characters, it won’t shut down during using.

Specification

Packing List

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