Tenma 72-14630 User manual

9. The internal wiring of the unit should not be

tampered with or altered. Doing so will likely

the unit and increase risk of electric shock.

10. Replace the battery as soon as the battery

indicator “ ” appears. When working under a low

battery, the unit might produce false readings that can

lead to electric shock or personal injury.

11. Turn the unit off when it is not in use and take out

the battery in case it will not be used for a long time.

1. Maximum voltage between terminal input and

COM: 1000V (except for 200mV, 250V)

2. μA mA terminal input protection: (CE)250mA 265V

auto recovery fuse

3. 10A terminal input protection: (CE)F1 (10A H

1000V) Fast type melted fuse Φ10.3x38mm

4. Resistance input protection: PTC/250V

5. Capacitance input protection: (CE) F2, F3

(0.5A H 250V) quick-blow fuse 5x20mm

6. Frequency input protection: PTC/1000V

7. Temperature input protection: (CE)0.5A 1000V

fuse

8. terminal input protection: PTC/1000V

9. hFE input protection: (CE)250mA 265V auto

recovery fuse, F3 (0.5A H 1000V) Fast type melted

fuse Φ6.35x31.8mm

10. Display: Full functional LCD, maximum reading is

19999, refreshing 2-3 times per second

11. Range: Manual

12. Polarity display: Auto

13. Over-range indication: 1

14. Low battery indication:“ ”

15. Operating temperature: 0~40℃(32℉~104℉)

16. Storage temperature: -10~50℃(14℉~122℉)

17. Relative humidity: 0℃~30℃ ≤75%；30℃~ 40℃

≤50%

18. Electromagnetic compatibility: Under a radio

frequency field of 1V/m, overall accuracy = specified

accuracy + 5% of the range; No specified accuracy if

the unit is put under a radio frequency field of more

than 1V/m.

19. Power supply: AC (External power adapter

AC110V/ DC9V-200mA) or DC (Battery Size

R14/1.5V×6 PCS)

20. Product size: (300×245×105) mm

21 .Product Net Weight: about 1500g (accessories

not included)

22. Safety Compliance: IEC 61010: CATII 1000V

1. Manual Range Manual range indicator

2. Warning! Warning indicator

3. Low Battery

4. Indicator for high voltage

5. Indicator for negative reading

6. Indicator of AC voltage or

current (No display for DC

voltage or current)

7. Data hold activated

8. Test of diode

9. Continuity buzzer on

10. Decimal Number Showing the readout

11. Measurement units

72-14630

Overview

Unpacking Inspection

General Specifications

Functional Buttons

Operational Guide (See Diagram 1, 2, 3)

LCD Display

Functions

Safety Notes

The Tenma 72-14630 Bench Top Digital Multimeter

features a 4 1/2 digit display with a maximum reading

of 19999. The large backlit LCD makes measurements

easy to read. The well-featured meter also provides

full range overload protection and dual power sources

(AC or DC battery). The unit can be used to test

AC/DC voltage, AC/DC current, resistance, frequency,

capacitance, temperature (Celsius), hFE transistors,

diode, and continuity test.

This operating manual includes relevant precautions and

safety information. Please read it carefully and strictly

observe all the Warnings and Safety Notes contained in

this manual.

Open the package and take out the unit. Check the

following items carefully to see if there is any missing or

damaged. If you find anything missing or damaged,

please contact your local dealer immediately.

● Operating Manual 1 Copy

● Test Lead 1 pair

● Short Test Lead with Alligator Clip 1 pair

● K Type Temperature Probe 1 piece

(Only applicable to test below 230℃)

● Socket Adaptor 1 piece

● Power Adapter 1 piece

(110VAC 60Hz (US) , 9VDC 200mA)

This unit is designed and produced in strict compliance

with IEC61010-1 code. As a unit with double insulation

over-voltage protection, it complies with the safety

standard contained in CAT II 1000V and Pollution

Degree II codes. Any failure to follow the operating

instruction contained in this manual may impair or void

the protection it has.

1 . Before use, the unit and test leads should be closely

inspected. If there appears to be any damage to either the

meter or test leads, do not attempt to use either. Do not use

the meter if the cover is removed, as it exposes the user to

2. If test leads are damaged, they must be replaced with

the one having identical model or electrical specifications.

3. Do not touch fingers or bare skin to any bare cables,

connectors, unused terminals, or circuits while being

tested.

4. When the meter is used at an effective voltage over 60V

in DC or 30V in AC, special care should be taken as there

is a danger of electric shock.

5. If the scope of the input value remains unknown, just

switch to the maximum range for testing.

6. No voltage or current exceeding the rated voltage or

current indicated by the unit should be applied between

test leads or between test lead and ground.

7. The rotary switch should be placed in the right position

and no changeover of range should be made during

measurement so as to prevent the damage of the unit.

8. Do not use or store the unit in an enviroment with high

temperatures, high humidity, flammable materials,

or excessive exposure to magnetic or radioactive field.

Unit of voltage: millivolt, volt

Unit of current: microampere,

milliampere, ampere

Unit of electrical resistance: Ohm,

kilohms, megohm

Unit of electrical capacity: nanofarad,

microfarad

Unit of frequency: Kilohertz

Unit of temperature: Celsius degree

Unit of triode amplification: times

Terminal Input Explanation

DC voltage measurement

AC voltage measurement

Resistance measurement

Frequency measurement

Diode/continuity test using

buzzer

(Use socket adaptor)

mA/μA for DC current measurement

A for DC Current measurement

mA/μA for AC current measurement

A for AC current measurement

Capacitance measurement

Temperature measurement

Power switch

Press Hold to enter or exit the hold mode when in

any mode, the meter beeps.

Backlight on or off (battery powered, backlight remain

on about 10 seconds before auto shut down.)

Triode amplification times

measurement

the risk of electric shock.

damage

2.DC or AC Voltage Measurement

3. DC or AC Current Measurement

4. Measuring Resistance, Diodes, Continuity or

Capacitance

Technical Specifications

1. DC Voltage

4. AC Current Replacing the battery or the fuse (See Diagram 4)

5. Resistance

6. Capacitance

7. Frequency

8. Temperature

9. Diode Test

10. Continuity Test

11. Triode hFE

2. AC Voltage

3. DC Current

72-14630

Tenma Test Equipment

300 S. Riverside Plaza #2200

Chicago IL, 60606

USA

www.Tenma.com

Alarm sounds on false terminal input

1. Please select correct terminal input and also turn the

rotary switch to select correct measuring function and

range. If not, the buzzer beeps and the warning signal

flashes.

● To avoid personal injury or damage to the unit due to

electric shock, please do not attempt to measure any

voltage higher than 1000 V though reading may be

obtained.

● The unit has an input impedance of approximately

10MΩ (ACV input impedance of approximately 2MΩ)，

which can cause measurement errors for high impedance

circuits, so input impedance must be taken into account.

● Before measuring the current, the circuit under test

should be de-energized first. Remember that it should be

connected in series with the circuit to be test.

● Never use it to measure current higher than 10A.

Though it is possible to get a readout for any current

below 20A, but it may damage the unit or endanger

yourself.

● For an accurate measurements, de-energize the circuit

to be tested and discharge any capacitors.

● When measuring a resistance equal or higher than

1MΩ, it is normal for the unit to take several seconds to

obtain a stable reading. In order to obtain a stable reading,

choose shorter test leads to carry out measurement.

● When measuring low resistance, the test leads and the

internal wiring of the unit will incur a resistance around

0.1Ω~0.2Ω. To obtain accurate reading, short-circuit the

test leads beforehand and record the reading obtained,

such reading should be deducted from the final readout to

ensure the accuracy of the measurement.

● If the diode to be tested is a silicon diode junction, it is

normal if the reading falls into a scope between 500mV

and 800mV. For continuity tests, if the resistance between

two terminals is greater than 100Ω, it is considered to be

an open circuit. If the resistance is less than 10Ω, then it

is a close continuous circuit, signaled by an audible alert.

The readout then is nearly equal to the resistance of the

circuit.

Accuracy: ± (% of the reading + digits), 1 year guarantee

Environmental temperature: 18℃~ 28`C

Environmental humidity: Less than 75% RH