Greenlee CMI-100 Bedienungsanleitung

CMI-100

CLAMP-ON METER

AMPERÍMETRO

CON PINZA

COMPTEUR

A PINCES

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 CMI-100 Clamp-on Meter is a hand-held testing device with the following

measurement capabilities: AC and DC voltage, AC and DC current, frequency and resistance.

The unit is also intended to check diodes and verify continuity.

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 CMI-100 Clamp-on Meter.

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

CMI-100

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 can result in an accident causing serious injury or death.

Electric shock hazard:

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

Important Safety Information

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.

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.

• Do not operate with the case open.

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

the unit.

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

CMI-100

Important Safety Information

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 the unit to extremes in temperature or high humidity.

See Specifications.

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

Unless measuring voltage, current or frequency, shut off and lock out power. Make

sure that all capacitors are discharged. Voltage must not be present.

Using this unit near equipment that generates electromagnetic interference can result

in unstable or inaccurate readings.

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.

Identification

1. Display

2. Lever

3. Jaw

4. Selector

5. HOLD Button

6. MAX/MIN Button

9 10

7. RANGE Button

8. ∆ZERO Button

9. COM Terminal

10. + Terminal

11. Polarity Indicator for DC

Current Measurements

CMI-100

Display Icons

11. Manual Ranging is enabled.

12. – Polarity Indicator for

Digital Display

13. AUTO Automatic Ranging is enabled.

14. Low Battery

15. DC measurement is selected.

16. AC measurement is selected.

17. ∆Relative mode is enabled.

18. Hold function is enabled.

19. MAX MAX Hold function is enabled.

20. MIN MIN Hold function is enabled.

21. M Mega (106)

Symbols on the Unit

Read the instruction manual.

Double Insulation

Battery

22. K Kilo (103)

23. ΩOhms

24. Hz Hertz

25. Continuity

26. Diode

27. m Milli (10-3)

28. V Volts

29. A Amps

30. 4 Overload for Digital Display

31. Overload for Bar Graph

32. Bar Graph Element

33. – Polarity Indicator for Bar Graph

27–29

21–24

16 17 18 19 20

3230 3133

*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 types of AC

measurement method 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 CMI-100 is a true RMS

meter.

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

Waveforms and Crest Factors

CMI-100

Using the Features

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

from the display. Press repeatedly to step through the ranges. Press and hold to return to

the automatic ranging mode.

Note: The autoranging feature is not available in the MAX/MIN and

∆

modes.

•MAX/MIN (PEAK) Holds the minimum or maximum value on the display. Since this feature

only operates with manual ranging, press the RANGE button first to select the

appropriate range, as described above. Press once to hold the minimum value; press again

to hold the maximum value (or peak value, if measuring an AC signal). Press again to exit

this mode.

•∆ZERO Finds the difference between two measurements. While taking a measurement,

press ∆to set the display to zero. The ∆icon will appear on the display. Take the second

measurement. The value on the display will be the difference between the two measure-

ments. Press and hold to exit this mode.

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

this mode.

Operation

Electric shock hazard:

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

1. Set the selector according to the Settings Table and connect the test leads to the unit.

Start with the highest measurement range.

Settings Table

To measure set the selector this icon will appear connect the and connect the

this value … to this symbol … on the display … red lead to … black lead to …

Continuity** and Ω+ COM

Current (AC) Aand A N/A N/A

Current (DC) Aand press and A N/A N/A

∆ZERO

Diode and press and V + COM

the RANGE button

Frequency* Hz and press Hz + COM

the RANGE button

Resistance Ω+ COM

Voltage (AC) Vand V + COM

Voltage (DC) Vand V + COM

*Frequency can also be measured with the jaw. Current flow must be at least 5 amps for an

accurate frequency reading.

**Tone indicates circuit resistance is less than 40 Ω.

2. See Typical Measurements for illustrations of typical uses.

3. Test the unit on a known functioning circuit or component.

• If the unit does not function as expected on a known functioning circuit, replace the

battery.

• If the unit still does not function as expected, send the unit to Greenlee for repair.

4. Take the reading from the circuit to be tested.

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