Amprobe ACD-16 Pro Manuale utente

USER'SMANUAL

ACD-16 Pro

ACD-16 TRMS Pro

ACD-40PQ

www. .com information@itm.com1.800.561.8187

1) SAFETY

This manual contains information and warnings that must be followed for operating the

instrument safely and maintaining the instrument in a safe operating condition. If the

instrument is used in a manner not specified by the manufacturer, the protection provided by

the instrument may be impaired.

The meter meets the requirements for double insulation to IEC61010-2-032(1994),

EN61010-2-032(1995), UL3111-2-032(1999):

Category III 600 Volts ac and dc.

PER IEC61010 OVERVOLTAGE INSTALLATION CATEGORY

OVERVOLTAGE CATEGORY II

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be

supplied from the fixed installation.

Note – Examples include household, office, and laboratory appliances.

OVERVOLTAGE CATEGORY III

Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.

Note – Examples include switches in the fixed installation and some equipment for industrial

use with permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY IV

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.

Note – Examples include electricity meters and primary over-current protection equipment.

TERMS IN THIS MANUAL

WARNING identifies conditions and actions that could result in serious injury or even death

to the user.

CAUTION identifies conditions and actions that could cause damage or malfunction in the

instrument.

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WARNING

To reduce the risk of fire or electric shock, do not expose this product to rain or moisture.

The meter is intended only for indoor use.

To avoid electrical shock hazard, observe the proper safety precautions when working with

voltages above 60 VDC or 30 VAC rms. These voltage levels pose a potential shock hazard

to the user.

Inspect test leads, connectors, and probes for damaged insulation or exposed metal before

using the instrument. If any defects are found, replace them immediately.

Do not touch test lead tips or the circuit being tested while power is applied to the circuit

being measured. To avoid accidentally short circuit of bare (uninsulated) hazardous live

conductors or busbars, switch them off before insertion and removal of the current clamp

jaws. Contact with the conductor could result in electric shock. Keep your hands/fingers

behind the hand/finger barriers that indicate the limits of safe access of the meter and the

test leads during measurement.

CAUTION

Disconnect the test leads from the test points before changing meter functions.

INTERNATIONAL ELECTRICAL SYMBOLS

!Caution ! Refer to the explanation in this Manual

Caution ! Risk of electric shock

Earth (Ground)

Double Insulation or Reinforced insulation

Fuse

AC--Alternating Current

DC--Direct Current

2) CENELEC Directives

The instruments conform to CENELEC Low-voltage directive 73/23/EEC and

Electromagnetic compatibility directive 89/336/EEC

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3) PRODUCT DESCRIPTION

This user's manual uses only representative model(s) for illustrations. Please refer

specification details for function availability to each model.

1) Transformer Clamp Jaws for AC

current magnetic field pick up

2) Jaw marking lines for ACA position

error indication

3) Hand/Finger Barrier to indicate the

limits of safe access to the jaws during

current measurements

4) Push-buttons for special functions &

features

5) Input Jack for all functions EXCEPT

non-invasive ACA current function

6) Common (Ground reference) Input

Jack for all functions EXCEPT

non-invasive ACA current function

7) Slide-switch Selector to turn the

power ON/OFF and Select a function

8) LCD display

9) Jaw trigger for opening the

transformer clamp jaws

10) Jaw center Indicators, at where

best ACA accuracy is specified

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) OPERATION

ACV & DCV functions

Set the slide-switch function-selector to the position. Default at last selected function.

Press SELECT button to toggle between ACV and DCV measurement functions. There is no

LCD annunciator for DC. LCD annunciator “ ” turns on to indicate AC is selected.

Line-level Frequency function

When voltage or current function is selected, press Hz button momentarily toggles to

Line-level Frequency function. Frequency trigger levels vary automatically with function

ranges.

HD%-R Total Harmonic Distortion - RMS function (ACD-40PQ only)

THD%-R = (Total Harmonics RMS / Total RMS) x 100%

Total Harmonic Distortion - RMS (THD%-R) is the percentage ratio of the Total Harmonics

RMS value to the Total (Overall) RMS value of a voltage or current signal, and is given by

the above expression. An ideal sinusoidal waveform has a value of 0 %. A badly distorted

sinusoidal waveform may have a much higher THD%-R value of approaching one hundred

(100% is the maximum theoretical reading).

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When voltage or current function is selected, press and hold THD%-R button for one

second or more toggles to Total Harmonic Distortion - RMS measurement function. The LCD

annunciator “%” turns on.

Note:

Specified accuracy at ACA fundamental > 5A; ACV fundamental > 50V.

The meter displays “---.- %” when ACA fundamental < 1A; ACV fundamental <8.5V

ACA Current clamp-on function

Set the slide-switch function-selector to the position. Inputs are made through the clamp

jaws for non-invasive ACA current measurements.

CAUTION

●For non-invasive ACA current measurements, press the jaw trigger and clamp the jaws

around only one single conductor of a circuit for load current measurement. Make sure the

jaws are completely closed, or else it will introduce measurement errors. Enclosing more

than one conductor of a circuit will result in differential current (like identifying leakage

current) measurement.

●Adjacent current-carrying devices such as transformers, motors and conductor wires will

affect measurement accuracy. Keep the jaws away from them as much as possible to

minimize influence. www. .com information@itm.com1.800.561.8187

Temperature function

Set the slide-switch function-selector to the oC/oF position. Default at last selected

function. Press SELECT button to toggle between oC and oF measurement functions.

Be sure to insert the banana-plug type-K temperature bead probe TPK-59 at correct

polarities.

Ω/functions

Set the slide-switch function-selector to the Ω/function position. Default at last selected

function. Press SELECT button to toggle between Ωand measurement functions.

Hi-Lo Logging mode

Hi-Lo Logging is an innovative feature. It minimizes product cost for maximum monitoring

speed and period making field monitoring simpler and more affordable. Hi-Lo Logging

captures the most important surges (Hi) & sages (Lo) using one-minute intervals. That is, the

meter uses its highest update rate to compare and capture the highest and lowest readings

in every one-minute time interval. It can log up to 5400 pairs of Hi/Lo readings and thus 5400

minutes of total logging period.

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Press and hold the “Hi-Lo Log” button for one second or more to start “ ” a new Hi-Lo

Logging session. All previously logged data is erased! Annunciators “Max Min” flashes and

real-time measurement readings are being displayed. Press SELECT button momentarily

toggles to display logged data item number (number of one-minute time intervals). “ ”

displays in the secondary display.

Press the HOLD button momentarily to pause. The LCD annunciator “ ” flashes. Press the

HOLD button momentarily again to continue. Press and hold the “Hi-Lo Log” button for one

second or more again to stop “ ” and end the Hi-Lo Logging session. The meter can now

be switched off.

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To recall the data, switch on the meter, then press the forward “ ” and backward “ ”

arrow buttons at the same time to recall “ ” the logged data. The meter displays in turn the

absolute maximum item number, absolute maximum reading, absolute minimum item

number, and then absolute minimum reading (of the whole logging period).

Press the forward “ ” (or backward “ ”) arrow button momentarily to read the next

logged data item. The meter displays in turn the one-minute item interval number “ ” (the

count of one-minute time intervals), Hi-reading “ ” (the highest reading), and then

Lo-reading “ ” (the lowest reading) of that one-minute item interval. Press-and-hold the

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button can quickly scroll the logged items. The meter gives short beeps when the last (or

he first) item is reached.t

Note:

1. When the meter’s memory is full or the meter battery is low, the meter will stop (end) the

Hi-Lo logging session and go back to the normal measuring mode.

2. The data is stored to the non-volatile memory shortly after every one-minute item interval

to maximize data safety. However, the end-of-data sign can be stored only after the Hi-Lo

logging session is ended with a session stop “ ”. Therefore, always stop “ ” the Hi-Lo

logging properly before sliding the slide-switch function-selector to the next function position.

3. After the Hi-Lo logging session hais ended, you can switch off the meter for

transportation, storage, or even battery changing. The logged data can also be downloaded

to PC computers through the optional purchase RS232 KIT2 interface kit. Also see RS232C

C computer interface capabilities section.P

Auto feature

The Auto (Automatic-Hold) feature automatically captures and displays significant stable

readings. Press and hold the Auto button for one second or more to toggle to the Auto

ode. The LCD annunciators “Auto” & “ ”turn on.m

WARNING

To avoid electric shock hazard, do not use the Auto (Automatic-Hold) mode to determine

if a circuit is live. Unstable readings will not be captured and displayed.

HOLD feature

The Hold feature freezes the display for later viewing. Press the HOLD button

momentarily to toggle to the Hold mode. The annunciator “ ” turns on.

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