Amprobe ACD-10 PRO Manuale utente

INSTRUCTION MANUAL

ACD-10 PRO & TRMS PRO

AMPROBE

Congratulations! You are now the owner of an AMPROBE Instrument. It has been

quality crafted according to quality standards and contains quality components and

workmanship. This instrument has been inspected for proper operation of all of its

functions. It has been tested by qualified factory technicians according to the

long-established standards of AMPROBE.

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).

ACD-10 PRO/TRMS PRO

Category II 600 Volts ac and dc.

Category III 300 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.

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 accidental 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.

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 Jaw Clamp for AC

current magnetic field pick up

2) Hand/Finger Barrier to indicate the

limits of safe access of the meter

during measurement

3) Push-buttons for special functions &

features

4) Push-buttons for special functions &

features on Slide-switch Selector

functions

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

display power ON/OFF and Select a

function

8) 3-3/4 digits 4000 counts LCD display

9) Jaw trigger for opening the

transformer clamp jaw

4) OPERATION

DC Voltage, AC Voltage, Hz Frequency functions

Inputs are made through the test leads terminals. Slide-switch on defaults at DC voltage.

Press SELECT button momentarily to select AC voltage.

Press the Hz push-button momentarily to activate Hz Frequency function in the following

slide-switch functions:

DCV & ACV via the test leads; ACA via the jaw clamp

Note: DC 400.0mV range is designed with 1000MΩhigh input impedance for least

current drain in measuring small signals, and can cope better with most commercially

available voltage output transducers/adapters. The non-zero display reading is normal

when the meter inputs are open circuit, which will not affect actual measurement

accuracy. The meter will show close to zero reading when the inputs are shorted. Open

input is actually a floating condition, which is not a zero-volt-input condition.

Note: Hz input sensitivity varies automatically with function range selected while

activating the Hz function. Lowest range has the highest sensitivity, and the highest

range has the lowest sensitivity. Activating the Hz function while measuring the specific

function signal (auto ranging) can automatically select the best sensitivity range to avoid

electrical noise which may cause unstable Hz reading. However, if the Hz reading shows

zero due to insufficient sensitivity, activate the Hz function BEFORE measuring the

specific function signal. The meter is then in the lowest range and can select the highest

sensitivity.

CAUTION

Measuring Resistance, Continuity, Diode or Capacitance function on a live circuit will

produce false results and may damage the instrument. In many cases the suspected

component must be disconnected from the circuit to obtain an accurate measurement

reading.

ΩResistance, and Continuity functions

Inputs are made through the test leads terminals. Slide-switch on defaults at Ω. Press

SELECT button momentarily to select Continuity function which is convenient for

checking wiring connections and operation of switches. A continuous beep tone

indicates a complete wire.

Diode test function

Inputs are made through the test leads terminals. Slide-switch on defaults at Ω. Press

SELECT button momentarily 2 times to select Diode test function. Normal forward

voltage drop (forward biased) for a good silicon diode is between 0.400V to 0.900V. A

reading higher than that indicates a leaky diode (defective). A zero reading indicates a

shorted diode (defective). An OL indicates an open diode (defective). Reverse the test

leads connections (reverse biased) across the diode. The digital display shows OL if the

diode is good. Any other readings indicate the diode is resistive or shorted (defective).

Capacitance function

Inputs are made through the test leads terminals. Slide-switch on defaults at Ω. Press

SELECT button momentarily 3 times to select Capacitance function. Relative zero

mode can be used to zero out the parasitic capacitance of the leads and the internal

protection circuitry of the meter when measuring low capacitance in the order of Pico

Farad (pF).

CAUTION

Discharge capacitors before making any measurement. Large value capacitors should

be discharged through an appropriate resistance load.

ACA Current clamp-on function

Inputs are made through the jaws clamps for non-invasive ACA current measurements.

CAUTION

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.

Strong Electro-magnetic field environments such as high-current transformers, motors

and conductors may affect measurement accuracy.

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