ANENG SZ18 Digital Multimeter User Manual

ANENG SZ18 Digital Multimeter

Introduction

This product is a 9999 counts true RMS auto-ranging digital multimeter. It is operated all by buttons with a triple display.

Safety Information

To avoid possible electrical shock, fire, or personal injury, please read all safety information before you use the product. Please use the product only as specified, or the protection supplied by the product can be compromised.

• Examine the case before you use the product. Look for cracks or missing plastic. Carefully look at the insulation around the terminals.
• The measurement must be made with correct input terminals and functions and within the allowable measuring range.
• Do not use the product around explosive gas, vapor, or in damp or wet environments.
• Keep fingers behind the finger guards on the probes.
• When the product has already been connected to the line being measured, do NOT touch the input terminal that is not in service.
• Disconnect the test leads from the circuit before changing the mode.
• When the voltage to be measured exceeds 36V DC or 25V AC, the operator shall be careful enough to avoid electric shock.
• Misuse of mode or range can lead to hazards, be cautious. “ ” will be shown on the display when the input is out of range.
• Low level of a battery will result in incorrect readings. Change the batteries when battery level is low. Do not make measurements when the battery door is not properly placed.

Instrument Overview

CD| AUTO| Auto range. The product selects the range with the best resolution.
---|---|---
®| MANU| Manual range. The user selects the range.
®| F| Capacitance test. (Farad)
@| A| Relative mode.
®| -H-| Diode test.
®| •>))| Continuity test.
(J)| %| Duty cycle test.
@| -BBB.8| Secondary measurements display.
®| AC| Alternating current.
@)| DC| Direct current.
@| H oc z| Frequency test. (Hertz)
---|---|---
@| | Temperature test. (Celsius)
@| OF| Temperature test. (Fahrenheit)
@| –  •-■  ,l’•”!’-.l’• 11111 •1•  ••J:1111 1•1 !:I Analog bar graph.
@| n| Resistance test. (Ohm)
@| A| Current test. (Ampere)
@| V| Voltage test. (Volt)
@)| -888.B| Primary measurement display.

@)

| T-RMS| The product measures both sinusoidal and nonsinusoidal ac waveforms accurately.
®| | Low battery. Replace batteries.
@| | Negative readings.
@| HOLD| Display freezes present reading.
@| V.F.C| Frequency converter test.
@| MAX| Display maximum value.
®| MIN| Display minimum value.
nkM111m| Measurement units.

LCD Display

Function Buttons

CD| Short press to switch among functions. Long press to enter in V.F.C function.
---|---

®

| Short press to change range.

Push for more than 2 seconds to enter the relative mode. The product will store the present reading as a reference for subsequent readings. The display is zeroed, and the stored reading is subtracted from all subsequent readings. Long- push again to exit the relative mode.

®| Press this button to switch MAX/MIN test. Long press 2 second to quit MAX/MIN mode.

@

| Push once to hold the current reading on the display; push again to continue normal operation.

Long press beyond 2 seconds to turn on

flashlight ; long press again to turn off flashlight.

Rotary button

Turn off the product at this position.

• The product automatically powers off after 15 minutes of inactivity.
• The built-in beeper beeps 5 times 1 minute before auto power off.
• To restart the product from auto power off, press the SELECT button or turn the rotary switch back to the OFF position and then to a needed position.
• To disable the Auto Power Off function, hold down the SELECT button when turning on the product, you will hear five beeps if you have successfully disabled the function.

, !f F.Cl

I V

| AC voltage <;750V DC voltage <;1000V

Frequency ;?:1QV, 1~100KHz Duty cycle: 1%~99%

V.F.C

---|---

l’i m . v£

| AC voltage <;99.99mV DC voltage <;99 . 99m V

Frequency <;1QV, 1~10MHz Duty cycle: 1%- 99%

Temperature: -20- 1000′ C (-4~1832)°F

Q

| Resistance: <;9 9.99MO

Continuity, beeper will beep when resistance less than 50 O

Diode test. Displays Olabove 3V Capacitance : <;9 . 9 99mF

NCV| NCV

.nJ\: UT

| Square wave: 50Hz/100Hz/200Hz/300Hz/400Hz/

500Hz/600Hz/700Hz/800Hz/900Hz/

1000Hz/2000Hz/3000Hz/4000Hz/

5000Hz

;:;:

mA

| DC  current:   :S99. 99m,A AC  current:   :S99. 99m,A

µ A

| DC c ur r ent : :S 999 . 9 µ,A AC c ur r ent : :S 999 . 9 µ,A

A

| DC c ur r ent : :S 9 . 999A AC c ur r ent : :S 9 . 999A

Input Terminals

A

| Input    terminal    for    AC/DC    current measurements to 9.999A.
---|---

µ A/ mA

| Input    terminal    for    AC/DC    current measurements to 99.99mA.

COM

| Common    (return) measurements.| terminal| for| all

… . JVl a

V Q Ht

| Input terminal for the measurements of:

1.  Diode

2.  Continuity

3.  Square wave

4.  Temperature

5.   AC/DC voltage

6.  Resistance

7.  Frequency

8.  Capacitance

Measurements Instruction

Measure AC/DC Voltage

1. Connect the black test lead to the COM terminal and the red lead to the Terminal.
2. To measure voltage under 99.99mV, turn the rotary too. To measure a voltage higher than 99.99mV, turn the rotary to, press SELECT to turn to AC voltage test mode.
3. Touch the probes to the correct test points of the circuit to measure the voltage.
4. Read the measured voltage on the screen.

• Do not measure the voltage that exceeds the extremes as indicated in the Specifications.
• Do not touch the high voltage circuit during measurements.

Measure AC/DC Current

1. Connect the black test leadto the COM Terminal and the red leadto the A or μA /mA Terminal (choose based on the value ofthe current to be measured);
2. Turn the rotary
3. Break the circuit path to be measured, connect the test leads across the break and apply power;
4. Read the measured current on the display.

• Do not measure current that exceeds the extremes as indicated in the Specifications.
• Use the AmA Terminal when you are measuring an unknown current. Then switch to the μA Terminal if necessary.
• Do not input voltage at this setting.

Measure Resistance

1. Connect the black test lead to the COM Terminal and the test lead to the Terminal;
2. Turn the rotary to , press “SELECT” to the Resistance Mode. The screen will show “ ”;
3. Touch the probes to the desired test points of the circuit to measure the resistance;
4. Read the measured resistance on the display.

• Disconnect circuit power and discharge all capacitors before you test resistance.
• Do not input voltage at this setting.

Test Diodes and Continuity

1. Connect the black test lead to the COM Terminal and the red lead to the Terminal;
2. Turn the rotary to press “SELECT” to the continuity Mode;
3. To test continuity, touch the probes to the desired test points of the circuit. The built-in beeper will beep when there is a short circuit;
4. To test diodes, connect the red probe to the anode side and the black probe to the cathode side of the diode being tested. Then read the forward bias voltage value on the display. If the polarity of the test leads is reversed with diode polarity or the diode is broken, the display reading shows “ ”.

• Do not input voltage at this setting.
• Disconnect circuit power and discharge all capacitors before you test diode.

Measure Capacitance

1. Connect the black test lead to the COM Terminal and the red lead to the Terminal;
2. Turn the rotary to , press “SELECT” to capacitance Mode;
3. Connect the red probe to the anode side and the black probe to the cathode side of the diode being tested;
4. Read the measured capacitance value on the display once the reading is stabilized.

• Disconnect circuit power and discharge all capacitors before you test diode.

Measure Frequency and Duty Cycle

1. Connect the black test lead to the COM Terminal and the red lead to the Terminal;
2. Turn the rotary switch to , press SELECT to frequency test function (≥10V，1~100KHz); or turn the rotary switch to , press SELECT to frequency test function (≤10V，1~5MHz);
3. If the frequency between 100kHz and 5MHz, press SELECT to enter AC mV position. Touch the probes to the desired test points, now the vice display will show frequency; Then press the SELECT again, the main display will show frequency and vice display will show duty cycle.

Measure Temperature

1. Connect the black test lead to the COM Terminal and the red lead to the Terminal;
2. Turn the rotary to , press “SELECT” to the temperature Mode; Now the main display will show Celsius and the vice display will show Fahrenheit;
3. Touch the probes to the desired test points;
4. Read the measured temperature on the display.

• Do not input voltage at this setting.

Test NCV

1. Turn the rotary to NCV position, press “SELECT” to the temperature Mode;
2. Hold the product and move it around, the built-in beeper will beep when the inner sensor detects AC voltage nearby. The stronger the voltage is, the quicker the beeper beeps.

Measure V.F.C

1. 1. Connect the black test lead to the COM Terminal and the red lead to the Terminal;
2. Turn the rotary to V.F.C mode, the screen will show voltage when put the test leads at the correct circuit.

Measure square wave

1. Connect the black test lead to the COM Terminal and the red lead to the Terminal;
2. Turn the rotary switch to , and the default output frequency is 50Hz. To change the output frequency, press the SEL button.
3. Touch the probes to the desired test points.

• Do not input voltage at this setting.

Maintenance

Beyond replacing batteries and fuses, do not attempt to repair or service the product unless you are qualified to do so and have the relevant calibration, performance test, and service instructions.
Clean the Product
Wipe the product with a damp cloth and mild detergent. Do not use abrasives or solvents. Dirt or moisture in the terminals can affect readings.

• Remove the input signals before you clean the product.

Replace the Batteries
When “ ” is shown on the display, batteries shall be replaced as below:

1. 1. Remove the test leads and turn off the product before replacing the batteries.
2. Loosen the screw on the battery door and remove the battery door.
3. Replace the used batteries with new batteries of the same type.
4. Place the battery door back and fasten the screw.

Replace the Fuses
When a fuse is blown or do not work properly, it shall be replaced as below:

1. Remove the test leads and turn off the product before replacing the fuse.
2. Loosen the four screws on the back cover and the screw on the battery door, then remove the battery door and the back cover.
3. Replace the fuse with a new fuse of the same type.
4. Place the back cover and the battery door back and fasten the screws.

Specifications

General Specifications

Display ( LCD)| 9999 Counts
Ranging| Auto/Manual
Material| ABS+TPE
Update Rate| 3 Times/Second
lure RMS| v
Data Hold| v
Backlight| v
Low Battery Indication| v
Auto Power Off| v
Mechanical Specifications

Dimension| 1477637mm
Weight| 191g ( without batt eries )
Battery Type| 1.SV AAA Battery * 3
Warranty| One year
Environmental Specifications

Operating

| Temperature| 0~40°C
Humidity| < 75%

Storage

| Temperature| -20~60°C
Humidity| < 80%

Electrical Specifications

DC Voltage (V)

| 999.9mV| 0.l mV| ****

± (0.5%+3)

9.999V| 0.001V
99.99V| 0.01V

999.9V

| ****

0.1V

DC Voltage (mV)

| 9.999mV| 0.00l mV
99.99mV| 0.0l mV

AC Voltage (V)

| 999.9mV| 0.l mV| ****

±(1.0%+3)

9.999V| 0.001V
99.99V| 0.01V

750.0V

| ****

0.1V

AC Voltage (mV)

| 9.999mV| 0.00lmV
99.99mV| 0.0l mV
*Frequency response of ACV: 40Hz-1kHz
Function| Range| Resolution| Accuracy
---|---|---|---
DC Current (A/mA)| 9.999A| 0.001A| ****

±(1.0%+3)

999.9mA| 0.lmA

DC Current (µA/mA)

| 99.99mA| 0.0lmA

9.999mA

| ****

0.00lmA

99.99µA| 0.0lµA
999.9µA| 0.lµA
AC Current (A/mA)| 9.999A| 0.001A| ****

±(1.2%+3)

999.9mA| 0.lmA

AC Current (µA/mA)

| 99.99mA| 0.0lmA

9.999mA

| ****

0.00lmA

99.99µA| 0.0l µA
999.9µA| 0.l µA
Frequency response of AC Current: 40Hz-1kHz
Function| Range| Resolution| Accuracy
---|---|---|---

Resistance

| 99.990| 0.010| ±(1.0 %+3)
999 .90| 0.10| ****

±(0.5%+3)

9.999kO| 0.00l kO

99.99kO

| ****

0.0lkO

999.9kO| 0.l kO
9.999M O| 0.00l M O| ±(1.5%+3)
99.99M O| 0.0lMO| ±(3 .0%+5)

Capacitance

| 9.999nF| 0.00lnF| ±(5 .0%+20)
99.99nF| 0.0lnF| ****

±( 2.0%+5)

999.9nF| 0.lnF
9.999µF| 0 .00l µF
99 .99µF| 0 .0l µF
999.9µF| 0.lµF
9.999mF| 0 .00l mF| ± (5.0%+5)
Function| Range| Resolution| Accuracy
---|---|---|---

Frequency (Measures only to lO0kHz under the ACV setting)

| 9.999Hz| 0.001H z| ****

±(0.1%+2)

99.99Hz| 0.01Hz

999.9Hz

| ****

0.1Hz

9.999kHz| 0.00l kHz
99.99kHz| 0.0l kHz

999.9kHz

| ****

0.lkHz

5.000MHz| 0.001M Hz
Duty Cycle| 1%~99%| 0.1%| ±(0.1%+2)

Temperature

| (-20~1000)°(| 1°(| ****

±(2.5%+5)

(-4~1832) °F

| ****

1°F

Diode| v
Continuity| v
NCV| v
Square wave| v
V.F.C| v

LIMITED WARRANTY AND LIMITATION OF LIABILITY

Customers enjoy a one-year warranty from the date of purchase. This warranty does not cover fuses, disposable batteries, damage from misuse accident, neglect, alteration, contamination, or abnormal conditions of operation or handling, including failures caused by use outside of the product’s specifications, or normal wear and tear of mechanical components.

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