Greenlee CMI-200 Bedienungsanleitung

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.

CMI-200

CLAMP-ON AMMETER

AMPERÍMETRO CON

PINZA

PINCE

AMPEREMETRIQUE

INSTRUCTION MANUAL

MANUAL DE INSTRUCCIONES

MANUEL D’INSTRUCTIONS

Description

The Greenlee CMI-200 Clamp-on Ammeter is a hand-held testing device with the following

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

It produces a 1 mV/A output when measuring AC and DC current. The unit is also intended to

test 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-200 Clamp-on Ammeter.

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-200

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.

Important Safety Information

Electric shock hazard:

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

• Use accessories that are appropriate for the application. See the category and

voltage rating of the accessory.

• Inspect the accessories 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.

Electric shock hazard:

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

CMI-200

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. Jaw

2. Lever

3. Selector

4. Display

5. HOLD button

6. DCA ZERO button

7. ∆REL button

8. MAX/MIN button

9. RANGE button

10. COM Input Terminal

11. + Input Terminal

12. Polarity Indicator for DC Amps

10 11

CMI-200

Display Icons

13. DC measurement is selected

14. AC measurement is selected

15. ∆Relative Zero function is enabled

16. Hold function is enabled

17. MAX MAX Hold function is enabled

18. MIN MIN Hold function is enabled

19. M Mega (106)

20. K Kilo (103)

21. ΩOhms

22. Hz Frequency in cycles per second

23. Continuity

24. Diode check

25. m Milli (10-3)

Symbols on the Unit

Read the instruction manual.

Double Insulation

Battery

26. V Volts

27. A Amps

28. Bar Graph Element

29. Overload for Bar Graph

30. – Polarity Indicator for

Bar Graph

31. Manual Ranging is enabled

32. – Polarity Indicator for

Digital Display

33. AUTO Automatic Ranging is enabled

34. Low Battery

35. Leftmost

digit

flashes Overload for Digital Display

25–27

19–22

14 15 16 17 18

2835 2930

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

RMS provides much more measurement versatility. The Greenlee CMI-200 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-200

Using the Features

•DCA Zero To zero the DCA residual value, press and hold DCA Zero until LCD reading

shows zero. When using this feature, unit stays in autoranging mode.

•∆REL 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 REL to exit this mode.

•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 below. Press once to hold the minimum value; press again

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

mode.

•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 or

∆

mode, 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.

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

30 minutes of inactivity. To restore power, press HOLD.

•Current Analog Output This feature allows the current waveform to be viewed on an

oscilloscope. It also allows the current to be recorded by a data logger.

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.

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 * Ω+ COM

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

A, then press

Current (DC) and hold the A N/A N/A

DCA ZERO button

to zero display

Diode V + COM

Frequency Hz Hz + COM

Resistance ΩΩ+ COM

Voltage (AC) VV + COM

Voltage (DC) VmV + COM

*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.

5. If it is a DC reading, remove the clamp from the circuit and press the DCA Zero button.

Clamp the jaw around the circuit again to measure the actual DC current.

Note: Press HOLD to hold the present value on the display.

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