USER'S
MANUAL
ACD-6 Pro
ACD-6 TRMS Pro
Versatile Clamp-on
Multimeter Series
1
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.
2
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
3
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 Jaw 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) Input Jack for all functions
EXCEPT non-invasive ACA current
function
5) Common (Ground reference)
Input Jack for all functions EXCEPT
non-invasive ACA current function
6) Slide-switch Selector to turn the
power ON/OFF and Select a
function
7) 3-3/4 digits 4000 counts LCD
display
8) Jaw trigger for opening the
transformer clamp jaw
9) Jaw center Indicators, at where
best ACA accuracy is specified
10) Jaw marking lines for ACA
position error indication
4) OPERATION
4
DC Voltage and AC Voltage functions
Inputs are made through the test lead terminals.
Note: DC 400.0mV range is designed with 1000MΩ high 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 a 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: AC 400.0mV range selection is by RANGE button manually, and is specified from
AC 40mV & up for ACD-6 Pro and from AC 60mV & up for True RMS model ACD-6
TRMS Pro.