Greenlee DML-430 Bedienungsanleitung

DML-54 • DML-430

DIGITAL

MULTIMETERS

MULTÍMETROS

DIGITALES

MULTIMETRES

NUMERIQUES

SELECT

Start

RANGE HOLDHz

COMmA µAA V

Temp

µA

OFF

Temp

MAXMAX

10A

HBC FUSED

MAX 0.5A

HBC FUSED 600V

1000V CAT III

CAT II

MkΩHz

H C

AUTO

012345

5000mV

mVA

INSTRUCTION MANUAL

MANUAL DE INSTRUCCIONES

MANUEL D’INSTRUCTIONS

Read and understand all of the instructions and safety

information in this manual before operating or servicing this tool.

Lea y entienda todas las instrucciones y la información sobre

seguridad que aparecen en este manual, antes de manejar estas

herramientas o darles mantenimiento.

Lire attentivement et bien comprendre toutes les instructions et

les informations sur la sécurité de ce manuel avant d’utiliser ou de

procéder à l’entretien de cet outil.

Description

The Greenlee DML-54 and DML-430 Digital Multimeters are hand-held testing devices with

the following measurement capabilities: AC and DC voltage, AC and DC current, temperature

(K-type thermocouples only), frequency, resistance, and capacitance. They also check diodes,

verify continuity, and store data.

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

This instruction manual is intended to familiarize all personnel with the safe operation and

maintenance procedures for the Greenlee DML-54 and DML-430 Digital Multimeters.

Keep this manual available to all personnel.

Replacement manuals are available upon request at no charge.

and are registered trademarks of Greenlee Textron.

KEEP THIS MANUAL

DML-54 • DML-430

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.

Electric shock hazard:

Contact with live circuits can result in severe injury or death.

Read and understand this material before operating or servicing

this equipment. Failure to understand how to safely operate this

tool can 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.

• 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 can result in severe injury or death.

• Do not operate with the case open.

• Before opening the case, remove the test leads from the circuit and shut off the

unit.

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

Electric shock hazard:

• 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. The item(s) must be clean and dry,

and the insulation must be in good condition.

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

DML-54 • DML-430

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

necessary, see 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 can result in severe injury or death.

Do not change the measurement function while the test leads are connected to a

component or circuit.

Failure to observe this precaution can result in injury and can damage the instrument.

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

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

Failure to observe these precautions can result in injury and can damage the instrument.

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.

Identification

1. Display LCD and bar graph

2. Feature Buttons See explanations under Using the Features

3. Selector Selects a function or turns power OFF

4. APositive input terminal for high current measurements

5. mA µAPositive input terminal for low current measurements

6. COM Negative, common or ground input terminal for all measurements

7. Temp

ΩV Positive input terminal for all measurements except current

SELECT

Start

RANGE HOLDHz

COMmA µAA V

Temp

µA

OFF

Temp

MAXMAX

10A

HBC FUSED

MAX 0.5A

HBC FUSED 600V

1000V CAT III

CAT II

4567

DML-54 • DML-430

Display Icons

8. Automatic Ranging is enabled

9. Hold Function is enabled

10. Call Function (data retrieval) is enabled

11. DC measurement is selected

12. AC measurement is selected

13. – Polarity Indicator

14. Diode

15. Low Battery

16. ∆Relative Zero function is enabled

17. - Polarity for Bar Graph

18. OL Overload (Numeric Display)

Overload (Bar Graph Display)

19. Bar Graph Element

20. Continuity

21. n Nano (10-9)

22. µMicro (10-6)

23. F Farads

24. m Milli (10-3)

25. V Volts

26. A Amps

27. M Mega (106)

28. k Kilo (103)

29. ΩOhms

30. Hz Hertz (Frequency or Cycles per Second)

31. (variable) Sensitivity level for Hz feature

Symbols on the Unit

Read the instruction manual.

Double Insulation

MkΩHz

H C

AUTO

012345

5000mV

mVA

9,10

11,12

27,28,29,30

24,25,26

21,22,23

Using the Features

Automatic Power Off

To extend battery life, the meter will shut itself off after approximately

17 minutes of inactivity. To restore power, press SELECT. To disable this

feature, press RANGE while turning the meter on.

START || ▼ ▲ Used for storing, reviewing and retrieving data. See the explanation

under Data Storage Function.

The Automatic Power Off feature is disabled when using this function.

Press and hold to illuminate the LCD. The lamp turns off after 30

seconds to extend battery life.

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

and DC when measuring current and millivolts.

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.

Note: When using MAX/MIN, Hold, or

∆

mode, pressing RANGE will

cause the meter to exit that mode.

Hz Press to measure frequency.

Note: The sensitivity of the frequency measurement function varies

with the measurement range. To automatically select a sensitivity

level, measure the voltage level first, then press Hz. If the

reading becomes unstable, or if the display is blank, manually

change the sensitivity by momentarily pressing RANGE.

Hold Press momentarily to hold the present value on the display. Press again

to exit this mode.

DML-54 • DML-430

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

Greek letter ξ.

mrofevaW

eulaVSMR 001001001001

eulaVdeifitceR 090017846

*rotcaFtserC

(ξ)

414.1137.12

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 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 DML-54 and DML-430

are true RMS meters.

The Waveforms and Crest Factors table shows some typical AC signals and their RMS values.

Waveforms and Crest Factors

Data Storage Function

The DML-430 and DML-54 have data storage and retrieval capability. The DML-430 can store

up to 43000 measurements; the DML-54 can store up to 5400 measurements. The user can

later review the data on the multimeter’s display, or download the data to a computer.

When in the recording mode, the meter takes a measurement, assigns that measurement to

the next available memory location, and repeats the process. This continues until the memory

is full or until the user manually stops the recording process.

The time interval between measurements (sampling rate) is selected by the user. A shorter

time interval will provide information about short-term fluctuations, whereas a longer time

interval will provide information about general trends. The factory setting is the shortest time

interval.

The time intervals are as follows: 0.05 seconds (0.2s for temperature and 0.4s for frequency),

1s, 20s, 40s, 60s, 120s (two minutes), 240s (four minutes), and 480s (eight minutes). The

minimum total measurement time for the DML-54 is 4 minutes and 30 seconds; the maximum

is 30 days. The minimum total measurement time for the DML-430 is 35 minutes and 30

seconds. The maximum is nearly 8 months.

When the sampling rate is 20s or greater, the meter will go to standby mode between

measurements to extend battery life. When the meter is in the standby mode, press SELECT

momentarily to view the display.

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