Elenco Electronics M-2625 Montageanleitung

OPERATOR’S

NSTRUCT ON MANUAL

M-2625

AUTO RANG NG

D G TAL MULT METER

with Temperature Probe

Contents

1. Safety Information 3,4

2. Safety Symbols 5

3. ront Plate of the Meter 5

Input Terminal 6

unction Rotary Switch 7

unction Press Button 8,9

LCD Display 10

4. Power On Option 11

5. Auto Power Off 11

6. Measurement Range 11

7. Making Measurements 12

Preparation 12

Measuring Voltage 12

Measuring DC Voltage 13

Measuring AC Voltage 14,15

Measuring Current 16

Measuring DC Current 17-19

Measuring AC Current 19-21

Measuring Resistance 21,22

Testing Diodes 23

Testing for Continuity 24

Measuring for Capacitance 25,26

Measuring requency 27

Measuring Duty Cycle 28,29

Measuring Temperature 29,30

8. Maintenance 31

Battery Replacement 31

use Replacement 32

9. General Specifications 33-35

-2-

ntroduction

This series LCD auto ranging and auto power-off digital multimeter

is a portable, compact, 3¾ digit multimeter. It is ideally suited for

field, lab, shop, car, and home.

CAUT ON: Read, understand and follow all Safety Rules and

Operating Instructions in this manual before using this product.

1. Safety nformation

Use the meter only as specified in this manual. Otherwise, the

protection provided by the meter may be impaired. Refer to safety

information in Table 1.

Table 1. Safety nformation

Warning

To avoid possible electric shock or personal injury, follow these

guidelines:

• Do not use the meter if it is damaged. Before you use the meter,

inspect the case. Look for cracks or missing plastic. Pay particular

attention to the insulation surrounding the connectors.

• Inspect the test leads for damaged insulation or exposed metal.

Check the test leads for continuity. Replace damaged test leads

before you use the meter.

• The RESPONSIBLE BODY shall be made aware that, if the

equipment is used in a manner not specified by the manufacturer,

the protection provided by the equipment may be impaired.

• Do not use the meter if it operates abnormally. Protection may be

impaired. When in doubt, have the meter serviced.

• Do not operate the meter around explosive gas, vapor, or dust.

• Do not apply more than the rated voltage, as marked on the meter,

between terminals or between any terminal and earth ground.

• Before use, verify the meter’s operation by measuring a known

voltage.

• When measuring current, turn off circuit power before connecting

the meter in the circuit. Remember to place the meter in series with

the circuit.

-3-

Table 1. Safety nformation (continued)

Warning

• When servicing the meter, use only specified replacement parts.

• Use caution when working above 30VAC rms, 42V peak, or 60VDC.

Such voltages pose a shock hazard.

• Avoid working alone.

• When using the probes, keep your fingers behind the finger guards

on the probes.

• Connect the common test lead before you connect the live test lead.

When you disconnect test leads, disconnect the live test lead first.

• Remove test leads from the meter with the battery door or portions

of the cover removed or loosened.

• To avoid false readings which could lead to possible electric shock

or personal injury, replace the batteries as soon as the low battery

indicator ( ) appears.

• Use only type “AA” batteries or equivalent, properly installed in the

meter case, to power the meter.

• To avoid the potential for fire or electrical shock, do not connect the

thermocouples to electrically live circuits.

Caution

To avoid possible electric shock or personal injury, follow these

guidelines:

• Disconnect circuit power and discharge all high-voltage capacitors

before testing resistance, continuity, diodes, or capacitance.

• Use the proper terminals, function, and range for your

measurements.

• Before measuring current, check the meter’s fuses and turn power

O to the circuit before connecting the meter to the circuit.

-4-

2. Safety Symbols

Symbols used on the meter and in this manual are explained in

Table 2.

Table 2. nternational Electrical and Relative Symbols

3. Front Plate of Meter

Figure 1. Front plate of the meter

-5-

~AC (Alternating Current) Important Information

~DC and AC

Caution, risk of electric shock

DC (Direct Current) Earth Ground

Equipment Safety Standard

Low Battery Indicator

Double Insulated

LCD Display

unction Press

Button

unction

Rotary Switch Input Terminal

nput Terminal

About terminal function refer to Table 3 and igure 2.

Figure 2. nput Terminal

Table 3. nput Terminal

Function Rotary Switch

About function rotary switch refer to Table 4 and igure 3.

-6-

Terminal Function Description

/ / )/OF

V / ΩΩ/ Hz

Volts, ohm, diode, frequency, DUTY, temperature and

capacitance measurement, and testing for continuity terminal

mA Milliampere current, microampere current measurement terminal

COM Common terminal for all measurements

10A Ampere current measurement terminal

Figure 3. Function Rotary Switch

Table 4. Function Rotary Switch Symbols

-7-

Position of Switch

Function

~VDC/AC voltage measurement

ΩΩResistance measurement, diode test, testing for continuity

)Capacitance measurement

Hz requency measurement / Duty cycle measurement

Table 4. Function Rotary Switch Symbols (continued)

Function Press Button

About press function button refer to igure 4.

Figure 4. Function Press Button

1. SELECT (state choice)

There are several functions at one rotary switch position; press the

SELECT button to select the desired function: ~V, ΩΩ , µµA~, mA~,

A~ range for AC or DC voltage, AC or DC current, resistance,

diode, or audible continuity measurement.

2. RANGE (range selection)

With the power on and the meter on the auto range mode, press the

RANGE button to select the desired measurement range manually.

The range goes from minimum to maximum by pressing the

RANGE button multiple times, and returns to minimum after

reaching the maximum range. Pressing and holding the RANGE

button for over two seconds returns the meter to auto range. This

button does not affect the frequency, capacitance, diode or

continuity range.

-8-

Position of Switch

Function

OFTemperature measurement

µµA~DC/AC microampere current measurement

mA~DC/AC milliampere current measurement

A~DC/AC ampere current measurement

OFF Power off position

3. REL∆∆(relative measurement)

Press the REL∆∆button to use the relative measuring function and

a “REL∆” symbol appears on the LCD. The result of the relative

measurement is the difference between the measuring value and

the reference value. The reference value is produced the same as

the momentary value by press the REL∆∆button. Press the REL∆∆

button again to exit this function and the “REL∆” symbol disappears

from the display. This button does not affect the frequency, duty

cycle, diode and continuity test functions.

4. HOLD (data hold)

Pressing the HOLD button enables the data hold function and an

“ H ” symbol appears on the display. The momentary value appears

on the display. Press the HOLD button again to exit this function

and the “ H ” symbol disappears from the display. This button does

not affect the frequency measurement function.

5. Hz/DUTY

(frequency and duty cycle measurement switch button)

When making a frequency, DC or AC voltage measurement, press

this button to switch between the Hz or duty cycle test mode.

6. RESET (reset button)

Press this button to clear all values and to restart the meter.

LCD Display

About function rotary switch refer to Table 5 and igure 5.

-9-

Figure 5. LCD Display

Table 5. LCD Display Symbols

-10-

Sequ. No. Symbol Description

18.8.8.8 The display digit group

2–Negative symbol

3AC AC (alternating current) indicator

4Battery power is weakening

5RS232

Serial transmission (not used on this meter)

6Auto Auto range indicator

7REL∆∆Relative measurement

8Data hold

9Diode symbol

10 Audible continuity function indicator

11 hFE Transistor gain indicator (not used)

12 ΩΩ/ kΩΩ/ MΩΩ

Hz / kHz / MHz

Resistance units

requency units

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