Greenlee DM-300 Bedienungsanleitung

DM-300 •DM-310

DM-330 •DM-350

Digital Multimeters

INSTRUCTION MANUAL

Read and understand all of the instructions

and safety information in this manual before

operating or servicing this tool.

English ............ 1–26

Français ......... 27–52

Italiano........... 53–78

Deutsch ........ 79–104

Español ....... 105–130

Português..... 131–156

Nederlands ... 157–182

Description

The Greenlee DM-300, DM-310, DM-330, and DM-350 Digital Multimeters

are hand-held testing devices with the following measurement

capabilities: AC and DC voltage, frequency, and resistance. They also

check diodes and verify continuity. These meters have non-contact and

single-probe voltage detection capability.

The DM-310, DM-330, and DM-350 multimeters have the following

additional measurement capabilities: AC and DC current, and capacitance.

They warn the user with a beep and error message on the LCD if the test

lead is plugged into the A input terminal while the selector switch is not in

the A position.

The DM-350 multimeter has additional low-current ranges for AC and DC

current measurement as well as a backlit display.

Safety

Safety is essential in the use and maintenance of Greenlee tools and

equipment. This instruction manual and any markings on the tool provide

information for avoiding hazards and unsafe practices related to the use of

this tool. Observe all of the safety information provided.

Purpose of This Manual

This instruction manual is intended to familiarize all personnel with the

safe operation and maintenance procedures for the Greenlee DM-300,

DM-310, DM-330, and DM-350 Digital Multimeters.

Keep this manual available to all personnel.

Replacement manuals are available upon request at no charge.

KEEP THIS MANUAL

All specifications are nominal and may change as design improvements occur. Greenlee

Textron Inc. shall not be liable for damages resulting from misapplication or misuse of

its products.

® Registered: The color green for electrical test instruments is a registered trademark

of Greenlee Textron Inc.

Do not discard this product or throw away!

For recycling information, go to www.greenlee.com.

DM-300 • DM-310 • DM-330 • DM-350

Important Safety Information

This symbol is used to call your attention to hazards or unsafe

practices which could result in an injury or property damage. The

signal word, defined below, indicates the severity of the hazard. The

message after the signal word provides information for preventing or

avoiding the hazard.

SAFETY ALERT SYMBOL

Immediate hazards which, if not avoided, WILL result in severe injury

or death.

Hazards which, if not avoided, COULD result in severe injury or death.

Hazards or unsafe practices which, if not avoided, MAY result in injury

or property damage.

Read and understand this material before

operating or servicing this equipment. Failure to

understand how to safely operate this tool could

result in an accident causing serious injury or

death.

Important Safety Information

Electric shock and fire hazard:

•Do not expose this unit to rain or moisture.

•Do not use the unit if it is wet or damaged.

•Use test leads or accessories that are appropriate for the application.

See the category and voltage rating of the test lead or accessory.

•Inspect the test leads or accessory before use. They must be clean

and dry, and the insulation must be in good condition.

•Use this unit for the manufacturer’s intended purpose only, as

described in this manual. Any other use can impair the protection

provided by the unit.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

Contact with live circuits could result in severe

injury or death.

Electric shock hazard:

•Do not apply more than the rated voltage between any two input

terminals, or between any input terminal and earth ground.

•Do not contact the test lead tips or any uninsulated portion of the

accessory.

Failure to observe these warnings could result in severe injury or death.

DM-300 • DM-310 • DM-330 • DM-350

Important Safety Information

Electric shock hazard:

•Unless measuring voltage, current, or frequency, shut off and lock

out power. Make sure that all capacitors are discharged. Voltage

must not be present.

•Set the selector and connect the test leads so that they correspond

to the intended measurement. Incorrect settings or connections can

result in a blown fuse.

•Using this unit near equipment that generates electromagnetic

interference can result in unstable or inaccurate readings.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

The fuse is an integral part of the overvoltage protection. When fuse

replacement is necessary, refer to “Specifications” for the correct type,

size and capacity. Using any other type of fuse will void the overvoltage

protection rating of the unit.

Failure to observe this warning could result in severe injury or death.

Electric shock hazard:

•Do not operate with the case or battery compartment open.

•Before opening the case or battery compartment, remove the test

leads from the circuit and shut off the unit.

Failure to observe these warnings could result in severe injury or death.

Important Safety Information

Electric shock hazard:

•Do not attempt to repair this unit. It contains no user-serviceable

parts.

•Do not expose the unit to extremes in temperature or high humidity.

Refer to “Specifications.”

Failure to observe these precautions may result in injury and can

damage the unit.

Electric shock hazard:

Do not change the measurement function while the test leads are

connected to a component or circuit.

Failure to observe this precaution may result in injury and can damage

the unit.

DM-300 • DM-310 • DM-330 • DM-350

Identification

1. LCD display

2. Feature buttons

3. Selector

4. Positive input terminal for high current measurements

5. Negative, common (COM), or ground input terminal for all

measurements

6. Positive input terminal for all measurements

except

high current

(6.000 A and 10.00 A ranges)

DM-310 • DM-330 • DM-350DM-300

5 6 4 5

Identification (cont’d)

Display Icons

7. Automatic ranging is enabled.

8. Hold function is enabled.

9. DC measurement is selected.

10. AC measurement is selected.

11. –Polarity indicator

12. MAX MAX MIN mode is selected.

MIN

13.

O.L

Overload indicator

14. µMicro (10-6)

15. F Farads

16. nNano (10-9)

17. Low battery indicator

18. Diode

19. Continuity

20. MMega (106)

21. kKilo (103)

22. ΩOhms

23. mMilli (10-3)

24. VVolts

25. Hz Hertz (frequency in cycles per second)

Note: Unidentified

icons are not used on

these models.

Symbols on the Unit

Warning—Read the instruction manual

Double insulation

Recycle product in accordance with manufacturer’s directions

9–10

17–19

20–22

23–25

14–16

DM-300 • DM-310 • DM-330 • DM-350

Using the Features

•Automatic Power Off To extend battery life, the meter will shut itself off

after approximately 30 minutes of inactivity. To restore power, press any

button. To disable this feature, press SELECT while turning the meter

on.

•MAX MIN Press and hold to begin recording the input. “MAX MIN” will

appear on the display. The meter will beep whenever the minimum or

maximum is updated. When using the MAX MIN function, press

momentarily to cycle through the maximum, minimum, difference

(MAX – MIN). Press and hold to exit this mode.

The Automatic Power Off feature should be disabled for extended use of

MAX MIN recording.

•EFPress momentarily to detect the electric field that surrounds current-

carrying conductors. Signal strength is displayed as a series of dashes

on the display.

–Use the tester’s built-in antenna (located along the top, near the

LCD) for tracing live circuits or locating a break in a wire.

–For more precision, such as distinguishing between current-

carrying and ground wires, connect a test lead to the + input

terminal and use it as a probe.

•(DM-350 only) Press and hold until LCD illuminates. The lamp

turns off after 90 seconds to extend battery life.

•SELECT Press momentarily to toggle between functions, or to toggle

between AC and DC when measuring current.

•RANGE Press once to enter the manual ranging mode. The icon

will disappear from the display. Press repeatedly to step through the

ranges. Press and hold to return to the automatic ranging mode.

When using MAX MIN or HOLD, pressing

RANGE

will cause the meter to

exit that mode.

•HOLD Press momentarily to hold the present value on the display.

Press again to exit this mode.

*The crest factor is the ratio of the peak value to the RMS value; it is

represented by the Greek letter ξ.

AC Measurement

AC measurements are usually displayed as RMS (root mean squared)

values. Two methods of AC measurement are

average-responding RMS

calibrated

and

true RMS-reading.

The average-responding RMS calibrated method takes the average value of

the input signal, multiplies it by 1.11, and displays the result. This method

is accurate if the input signal is a pure sine wave. The Greenlee DM-310 is

an average-responding meter.

The true RMS-reading method uses internal circuitry to read the true RMS

value. This method is accurate, within the specified crest factor limitations,

whether the input signal is a pure sine wave, a square wave, sawtooth

wave, half wave or signal with harmonics. The ability to read true RMS

provides much more measurement versatility. The Greenlee DM-300,

DM-330, and DM-350 are true RMS meters.

The Waveforms and Crest Factors table shows some typical AC signals and

their RMS values.

Waveforms and Crest Factors

Waveform

RMS Value 100 100 100 100

Rectified Value 90 100 87 64

Crest Factor* 1.414 1 1.73 2

(ξ)

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