Tenma 72-3530 Bedienungsanleitung

Industrial True RMS Digital

Multimeter

Model: 72-3530

CONTENTS

Page Number Details

2 What’s Included

3 Important Safety Information

3 Product Overview

4 Display

5 Function Selection & Buttons

5 Buttons

7 Measuring

7Measuring AC/DC Voltage

8 Measuring Resistance/Conductivity

9 Measuring Circuit Switching

9Diode Test

9 Measuring Capacitance

10 Measuring Frequency/Duty Ratio

10 Measuring Temperature

11 Measuring AC/DC

11 60A/600A ACA/DCA External Input Current Calipers Measurement

12 Non-contact AC Voltage Sensing

12 Square-wave Output

13 Other Functions

14 Technical Specications

14 Measurement of DC Voltage

14 Measurement of AC Voltage

15 Measurement of DC Current

15 Measurement of AC Current

16 Measurement of Resistance/Conductance

16 Measurement of Capacitance

17 Measurement of Frequency/Duty Ratio Cycle

18 Measurement of Temperature

18 Maintenance and Repair

WHAT’S INCLUDED

• Probe

• Point K-type thermocouple

• Lithium battery charger

• USB cable

• User manual

IMPORTANT SAFETY INFORMATION

• When using electrical appliances basic safety precautions should always be

followed.

• Before use, check the insulation layer of the probe, which should be kept intact

and without damage.

•There are no user-serviceable parts in this product. Refer all servicing to qualied

personnel.

• When the low battery symbol is displayed on the LCD, replace the battery

immediately to ensure measurements are precise.

• The function range switch must be placed at the correct measuring location.

• Signals detected are not allowed to exceed the limit value so as to prevent electric

shock and instrument damage.

• Gears of range switch are not permitted to change during measuring, in order to

help prevent electric shock and instrument damage.

• After each measurement is completed, it is necessary to disconnect the probe

from the circuit under test.

• Therefore, once measurement is complete, turn off the power supply and

disconnect the probe and circuit under test.

• When measuring voltage higher than DC 30V or AC 30Vrms, be careful when

using the instrument in order to avoid electric shock.

• Do not use the instrument at high temperatures or humidity.

• Do not store the instrument in a damp or humid environment as moisture is likely

to make the Multimeter’s performance deteriorate.

• When cleaning, use a damp cloth and a mild detergent to clean the instrument’s

outer case.

• Do not use any chemicals, abrasives or solvents that could damage the

instrument.

PRODUCT OVERVIEW

1. Shell 5. Range knob switch

2. Display 6. Input terminal for

measuring

3/4/7. Function keys 8. Alarm luminous diode

9. USB cable/bluetooth interface/NCV sensing

terminal

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Symbol Specication

Data recall

Data storage

Data hold

LoZ AC low impedance

Negative value

VFC Measuring of voltage to frequency converter

Alarm for high voltage

Circuit on-off measurement

Automatic shutdown

Auto Automatic range

Peak Peak measuring

MIN/AVG/MAX Prompt for measuring minimum/average/maximum value

AC/DC AC/DC measurement

∆Relative measuring

mV, V Voltage unit: millivolt and volt

µA, mA, A Current: Microamp, milliampere and ampere

Ω, kΩ, MΩ Resistance unit: Ohm, kilohm and megohm

nF, µF, mF Capacitance unit: nanofarad, microfarad and millifarad

Hz, kHz, MHz Frequency unit: Hz, kHz, and MHz

mS Period unit: millisecond

%Duty ratio or % (4-20mA) measurement unit

AC AC

nS Conductivity unit: nano-siemens

NCV Non-contact AC voltage sensing

°C / °F Celsius or Fahrenheit

Undervoltage of battery in the machine

Interface output

Measuring value for main display

Measuring value for auxiliary display

XXXX Auxiliary display: Storage no. and setting value

H XX: XX Auxiliary display: hour XX: XX timing value

Simulated pointer

DISPLAY

RCL

STO

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0 •

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FUNCTION SELECTION & BUTTONS

Function Knob Description

V~ V AC/DC Voltage measurement

LoZ AC low impedance voltage measurement

ΩResistance measurement

nS Conductivity measurement

Diode PN junction voltage measurement

Circuit on-off measurement

Capacitance measurement

Hz Frequency measurement

%Duty ratio measurement

% (4-20mA) For measurement on (4-20mA) current transducer only

°C °F Temperature measurement

µA~ mA~ 10A~ AC/DC measurement

AC+DC (AC + DC) measurement

600A ACA/DCA current calipers measurement

Output Square-wave output measurement

NCV Non-contact AC voltage sensing

Built-in lithium battery charging gear

OFF Power supply is off

BUTTONS

RANGE button

• Press to switch from automatic to manual range (the “Auto” prompt will disappear

from the LCD).

• A single press results in one gear of range upwards.

• After reaching the highest gear of the range, press to jump to the lowest gear of

the range and circulate in sequence.

• Press and hold the button for more than 2 seconds or rotate for switchover and it

will exit the mode of manual range.

STORE button

•Press the button to save a piece of data and the LCD will ash “ ”.

• Press and hold the button to enter the automatic storage setting menu.

• In the automatic storage setting menu, when the auxiliary display shows “SET.1”, it

is advised to set the interval for automatic storage (1~240) in the unit of seconds.

• Press HOLD to exit the setting.

• Press SELECT to enter the next interface and the auxiliary display shows “SET.2”.

It is advised to set the duration for automatic storage in the unit of minutes.

• Short press HOLD to return to SET.1 and press the SELECT button to start the

function of automatic recording based on the parameters set.

STO







• In automatic recording, press the HOLD/Esc button to exit Automatic Storage.

RECALL button

• Press the button to enter Recall Mode and the LCD will display “ ”.

• In Recall Mode, the auxiliary display shows the number for current data.

• Short press the REL or HZ% button to rapidly recall one piece of data forwards or

backwards.

• Short press the RANGE and HOLD buttons to delete current data and exit the

Recall Mode.

• If it is necessary to delete all of the data, do so in the system setting menu and

execute the “DEL” function.

MAX/AVG/MIN Peak hold button

• Press MAX MIN to enter the mode of Manual Range Recording. The function of

Automatic Shutdown is cancelled.

• The LCD will display “ ” and the auxiliary display will show ‘MAX’.

• Press the button and the LCD will display “ ” and the auxiliary display will show

‘AVG’.

• Press again and the LCD will display “ ” and the auxiliary display will show

‘MIN’.

• The sequence is MAX/AVG/MIN. Long press the MAX MIN button to exit the mode

of Data Recording.

• In AC voltage/current functional state, long press “Peak hold” to enter the function

of Peak Measurement. The LCD will display ‘Peak’.

• Short press it to independently switch between P-Max and P-Min modes. Long

press the “Peak hold” button to exit the function of peak measurement (the

response time is about 1mS).

HOLD/ button of data-hold/backlight

• Press the HOLD button and the displayed value will be locked and retained and

the display will show “ ”.

• Press again and the locking will be alleviated, entering the mode of General

Measuring.

• Press and hold the button to turn off or on the backlight and fast switch

between three kinds of backlight luminance.

/REL button of direction selection/relative measurement

• Press REL to automatically enter the mode of Manual Range for Relative

Measurement.

• Take the current displayed value as a reference value.

• Then press again to make the difference between the measured value and

reference value display on the main display.

• Press again to re-select current original data as a reference value.

•Press and hold the button to exit REL mode (applies to V , Ω, I , °C/°F and ).

Hz/%/ /Setup: button of frequency, duty ratio/direction selection/setting

• Press Hz% to make the frequency/duty ratio switch (applies to V~, I~, Hz% only).

• Long press the Setup button to enter the system setting menu.

• Setting items include “brt” (brightness) for backlight, “Usb” (USB) for

RCL

MAX

AVG

MIN

~ ~



communication on/off, “bEEp” (key beep) for buzzer switch on/off, “ALO” (ALO

time) for automatic light off, “APO” (APO time) for automatic power supply off,

“DEL” (format MEM) for memory formatting.

• Short press the arrow button to select an item and short press HOLD to exit the

setting menu.

• You can alter the parameters of the setting items through the RANGE or MAX MIN

buttons.

• If the parameter displayed on the auxiliary display is “YES”, the operation of

memory formatting will be executed by short pressing SELECT and all of the data

saved will be cleared.

SELECT/V.F.C - button of selection/measurement on voltage or current to

frequency conversion

• Press SELECT to choose the function.

• Press and hold V.F.C for two seconds in AC voltage mode and the LCD will display

“V.F.C”.

• It will be allowed to enter the mode of V.F.C measurement on voltage to frequency

conversion.

• Press and hold the button again and it will exit the mode of V.F.C measurement.

• In mV gear, press and hold SELECT to enter or exit the function of temperature

measurement.

• In µA gear, press and hold SELECT to enter or exit % (4-20mA).

MEASURING

• Before measuring, check the built-in battery.

• If the low battery symbol is showing on the LCD, then change the battery

immediately or charge before use.

• Watch out for the ! symbol beside the probe socket, which warns you of not

exceeding the indicated gure for voltage or current under test.

MEASURING AC/DC VOLTAGE

• The AC measuring displayed value is the true virtual value. During in-circuit

measurement, press the Hz/% button to select the mode of Measurement on

Frequency/Duty Ratio for the auxiliary display.

• In the DC voltage function gear, press SELECT to choose the mode of AC and DC

measurement.

• Press the Hz/% button and the auxiliary display will show AC/DC/Hz values in

order and the AC and DC value will be on the main display.

Caution

•If the input impedance of the instrument, which is about 10MΩ, is higher than the

load, it will cause an error in measurements of high-impedance circuits.

• Mostly, if a circuit is lower than 10k, errors can be ignored (0.1% or lower).

• Do not input voltage higher than 1,000Vrms. It is possible to measure higher

voltage, but it is very likely to damage the instrument.

•It’s recommended to test a known voltage before use in order to conrm that the

product is functioning correctly.

MEASURING RESISTANCE/CONDUCTIVITY

•When measuring ultra-high resistance, higher than 40MΩ, it is advised to use nS

range to measure its conductivity G: G=1/R (Ω). The unit Siemens (S)=10 9/R (Ω).

The unit is (nS).

• By virtue of the function of resistance measuring, it is allowed to make self-checks

on built-in fuses.

• Open circuit voltage is about 1V.

Caution

• If the resistance under test is an open circuit, or the resistance is beyond the

maximum range of the instrument, it will display “OL” on the LCD.

• When measuring in-circuit resistance, turn off all the power to the circuit under test

and discharge the residual electric charge in the capacitor before measuring, in

order to guarantee correct findings.

•In low-resistance measuring, the probe will result in an error of 0.1Ω-0.2Ω.

• In order to acquire an accurate reading, it is necessary to short-circuit the probe

and adopt Relative Measuring mode to ensure measuring precision.

•If probe resistance is higher than 0.5Ω in short circuit, it’s necessary to check

whether the probe is loose or if there is any other reason.

• When measuring high resistance, it is likely to take a couple of measurements

before the reading is stable. This is normal for measuring high resistance.

• It is not allowed to input voltage higher than DC 30V or AC 30V in order to prevent

personal injury.

MEASURING CIRCUIT SWITCHING

• If resistance between two terminals

measured is higher than 100Ω, it shall

be deemed as open circuit and the

buzzer will not sound.

• If the resistance between the two

terminals measured is lower than

10Ω, it shall be deemed as sound

conductivity of a circuit and the buzzer

will produce a constant sound.

Caution

• While inspecting in-circuit circuit

switching, it is necessary to cut off the

power supply to the circuit under test

and discharge residual electric charge

in the capacitor before measuring.

• Do not input voltage higher than DC

30V or AC 30V to prevent personal

injury.

DIODE TEST

• The range of test voltage for diode is

about 0-3V.

• The auxiliary display shows “diod”.

Caution

• If the diode under test is in open circuit

or reverse polarity, it will display “OL”.

In terms of silicon PN junction, 500-

800mV shall be generally conrmed as

normal value.

• When measuring in-circuit mode, it is

necessary to cut off all the power to

the circuit under test and discharge

residual electric charge in the capacitor

before measuring.

• Do not input voltage higher than DC

30V or AC 30V in order to prevent

personal injury.

MEASURING CAPACITANCE

•When there is no input, the instrument will display a xed reading, which is the

inherent capacitance of the instrument.

• When measuring capacitance in small-range gear, the inherent value must be

deducted from the measured value to guarantee precise measurements.

• Therefore it is allowed to utilize the function of Relative Measuring of the

instrument to make automatic

deduction, facilitating measuring

reading.

Caution

• If metered capacitance is in short

circuit, or capacitance is beyond the

maximum range of the instrument, the

LCD will display “OL”.

• When measuring large bulk

capacitance it is normal to take a few

seconds to measure.

• Before measuring, discharge all the

residual electric charge in capacitance,

particularly important for high-voltage

capacitance, preventing damage to the

meter and personal injury.

MEASURING FREQUENCY/DUTY RATIO

• In the gear of frequency measurement,

press the Hz% button to select the

mode of period for auxiliary display/

duty ratio measurement.

Caution

• Do not input voltage higher than DC

30V or AC 30V in order to prevent

personal injury.

MEASURING TEMPERATURE

• Press and hold SELECT in mV gear

to enter or exit the temperature

measurement function.

• Press SELECT under the temperature

measurement function to switch the

display between °C and °F.

• Temperature sensor: applicable to the

K-type thermocouple only.

• Boot up to display “OL” and plug in

the K-type temperature sensor to the

meter.

Caution

•The K-type thermocouple congured in

accessories is applicable to measuring

temperatures below 230°C/446°F only.

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