AMPROBE ACD-6 Pro Versatile Clamp-on Multimeter User Manual
- June 4, 2024
- AMPROBE
Table of Contents
AMPROBE ACD-6 Pro Versatile Clamp-on Multimeter
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.
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
CENELEC Directives
The instruments conform to CENELEC Low-voltage directive 73/23/EEC and Electromagnetic compatibility directive 89/336/EEC
PRODUCT DESCRIPTION
This user’s manual uses only representative model(s) for illustrations. Please refer specification details for function availability to each model.
- Transformer Clamp Jaw for AC current magnetic field pick up
- Hand/Finger Barrier to indicate the limits of safe access of the meter during measurement
- Push-buttons for special functions & features
- Input Jack for all functions EXCEPT non-invasive ACA current function
- Common (Ground reference) Input Jack for all functions EXCEPT non-invasive ACA current function
- Slide-switch Selector to turn the power ON/OFF and Select a function 3-3/4 digits 4000 counts LCD display
- Jaw trigger for opening the transformer clamp jaw
- Jaw center Indicators, at where best ACA accuracy is specified
- Jaw marking lines for ACA position error indication
OPERATION
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.
CAUTION
Using Resistance, Continuity or Diode function in 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.
Ω Resistance, and Continuity functions
Inputs are made through the test lead 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 circuit.
Diode test function
Inputs are made through the test leads terminals. Place slide-switch to Ω position. 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).
ACA Current clamp-on function
Inputs are made through the clamp jaws 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, otherwise this 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 jaw’s tip away from them as
much as possible to minimize influence.
HOLD
The hold feature freezes the display for later viewing. Press the HOLD
momentarily to activate and to exit the hold feature.
Relative zero mode
Relative zero mode allows the user to offset the meter consecutive
measurements with the displaying reading as the reference value. The display
will now show readings relative to the stored reference value. That is,
display = reading – stored value. Press the button momentarily to activate and
to exit relative zero mode.
Manual or Auto-ranging
Press the RANGE button momentarily to select manual-ranging mode, and the
meter will remain in the range it was in, the LCD symbol turns off. Press the
button momentarily again to step through the ranges. Press and hold the
RANGE button for 1 second or more to resume auto-ranging mode.
Auto Power Off (APO)
When the meter is on, the Auto Power Off (APO) feature will switch the meter
to sleep mode automatically after approximately 30 minutes of no slide-switch
or push button operations to extend battery life. To wake up the meter from
APO, press the buttons momentarily or set the slide-switch to the OFF position
and then slide back on again. Always set the slide-switch to the OFF position
manually when the meter is not in use.
MAINTENANCE WARNING
To avoid electrical shock, disconnect the meter from any circuit, remove the
test leads from the input jacks, and turn OFF the meter before opening the
case. Do not operate with open case.
Trouble Shooting
If the instrument fails to operate, check batteries and test leads etc., and
replace as necessary. Double check operating procedure as described in this
user’s manual
If the instrument voltage-resistance input terminal is subjected to a high
voltage transient (caused by lightning or switching surge to the system) by
accident or abnormal conditions of operation, the series fusible resistors
will be blown (become high impedance) just as standard fuses to protect the
user and the instrument. Most measuring functions through this terminal will
then be open circuit. The series fusible resistors and the spark gaps should
then be replaced by qualified technician. Refer to the LIMITED WARRANTY
section for obtaining warranty or repairing service.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use
abrasives or solvents. If the meter is not to be used for periods of longer
than 60 days, remove the batteries and store them separately
To avoid electrical shock, disconnect the meter from any circuit, remove the
test leads from the input jacks, and turn OFF the meter before opening the
case. Do not operate with open case.
Trouble Shooting
If the instrument fails to operate, check batteries and test leads etc., and
replace as necessary. Double check operating procedure as described in this
user’s manual
If the instrument voltage-resistance input terminal is subjected to a high
voltage transient (caused by lightning or switching surge to the system) by
accident or abnormal conditions of operation, the series fusible resistors
will be blown (become high impedance) just as standard fuses to protect the
user and the instrument. Most measuring functions through this terminal will
then be open circuit. The series fusible resistors and the spark gaps should
then be replaced by qualified technician. Refer to the LIMITED WARRANTY
section for obtaining warranty or repairing service.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use
abrasives or solvents. If the meter is not to be used for periods of longer
than 60 days, remove the batteries and store them separately
Battery replacement
The meter uses one 3V coin battery (ANSI/NEDA-5004LC, IEC-CR2032).
To replace the battery, loosen the two screws from the case bottom and remove the bottom case. Slide the battery out the side of the holder (see example below) and replace with a new battery (observe polarity). Replace the bottom case. Re-fasten the screws.
SPECIFICATIONS
GENERAL SPECIFICATION S
Display : 3-3/4 digits 4000 counts LCD display(s)
Update Rate : 3 per second nominal
Polarity : Automatic
Low Battery : Below approx. 2.4V
Operating Temperatur e : 32°F TO 104°F (0°C TO 40°C)
Relative Humidity : Maximum relative humidity 80% for temperature up to 31°C
decreasing linearly to 50% relative humidity at 40°C
Altitude : Operate below 6,562ft (2000m)
Storage Temperature : -4OF to 140ºF (-20OC to 60OC), < 80% R.H. (with
battery removed) Temperature Coefficient : nominal 0.15 x (specified
accuracy)/OC @ 32°F – 64°F OR 82°F – 104°F (0OC -18OC or 28OC -40OC), or
otherwise specified
Sensing : Average sensing for ACD-6 PRO; True RMS for ACD-6 TRMS PRO
Safety : Meets IEC61010-2-032(1994), EN61010-2-032(1995),
UL3111-2-032(1999). Category III 600 Volts ac & dc.
Transient protection : 6.5kV (1.2/50µs surge) for all models
Pollution degree : 2
E.M.C. : Meets EN61326(1997, 1998/A1), EN61000-4-2(1995), and
EN61000-4-3(1996) In an RF field of 3V/m:
Total Accuracy = Specified Accuracy + 45 digits
Performance above 3V/m is not specified
Overload Protections :
ACA Clamp-on jaws : AC 1000A rms continuous
+ & COM terminals (all functions) : 600VDC/VAC rms
Power Supply : One 3V coin battery (ANSI/NEDA-5004LC, IEC-CR2032)
Power Consumptio n : ACD-6 Pro: 2.2 mA typical
ACD-6 TRMS Pro: 2. 8mA typical
APO Timing : Idle for 30 minutes
APO Consumption : 40µA typical on all model functions except that 190µA
typical on ACD-6 TRMS PRO voltage & current functions
Dimension : L224mm X W78mm X H40mm
Weight : 220 gm approx
Jaw opening & Conductor diameter : 45mm max
Accessories : Test leads (pair), batteries installed, user’s manual, &
soft carrying pouch
ELECTRICAL SPECIFICATIONS
Accuracy is ±(% reading digits + number of digits) or otherwise specified, at
73°F ± 9°F (23 OC ±5 OC) & less than 75% R.H.
True RMS Model ACD-6 TRMS PRO ACV & ACA clamp-on accuracies are specified from
5% to 100% of range or otherwise specified. Maximum Crest Factor are as
specified below, and with frequency spectrums, besides fundamentals, fall
within the meter specified AC bandwidth for non-sinusoidal waveforms.
DC Voltage
RANGE | Accuracy |
---|---|
400.0 mV | 1.0% + 3d |
4.000V, 40.00V,
400.0V
| 1.7% + 3d
600V| 2.0% + 4d
NMRR : >50dB @ 50/60Hz
CMRR : >120dB @ DC, 50/60Hz, Rs=1kΩ Input Impedance : 10MΩ, 30pF nominal
(1000MΩ for 400.0mV range)
DC Voltage
Ohms
RANGE | Accuracy |
---|---|
400.0W | 1.5% + 6d |
4.000kW, 40.00kW,
400.0kW
| 1.0% + 4d
4.000MW| 1.5% + 4d
40.00MW| 2.5% + 4d
Open Circuit Voltage : 0.4VDC typical
AC Voltage
RANGE | Accuracy |
---|
50Hz — 500Hz
400.0mV 1)| 4.0% + 5d
50Hz — 60Hz
4.000V, 40.00V,
400.0V
| 2.0% + 5d
60Hz — 500Hz
4.000V, 40.00V,
400.0V
| 2.5% + 5d
50Hz — 500Hz
600V| 3.0% + 5d
CMRR : >60dB @ DC to 60Hz, Rs=1kΩ Input Impedance : 10MΩ, 30pF nominal True RMS model ACD-6 TRMS PRO Crest
Factor:
< 2.5 : 1 at full scale & < 5.0 : 1 at half
scale
1)Selection by RANGE button manually, and
is specified from AC 40mV (AC 60mV for True RMS model ACD-6 TRMS PRO) and up
Diode Tester
Open Circuit Voltage | Test Current (Typical) |
---|---|
< 1.6 VDC | 0.4mA |
ACA Current (Clamp-on)
RANGE | Accuracy 1) 2) 3) |
---|
50Hz / 60Hz
400.0A| 1.5% + 5d
1000A| 1.5% + 5d*
True RMS model ACD-6 TRMS PRO Crest
Factor:
< 2.6 : 1 at full scale & < 5.2 : 1 at half
scale
- Add 8d to specified accuracy while reading is below 15% of range
- Induced error from adjacent current-carrying conductor: < 0.06A/A
- Specified accuracy is for measurements made at the jaw center. When the conductor is not positioned at the jaw center, position errors introduced are:
Add 1% to specified accuracy
measurements made WITHIN marking lines (away from jaw opening)
Add 4% to specified accuracy
measurements made BEYOND marking lines (toward jaws opening)
LIMITED WARRANTY
Congratulations! Your new instrument has been quality crafted according to
quality standards and contains quality components and workmanship. It has been
inspected for proper operation of all of its functions and tested by qualified
factory technicians according to the long-established standards of our
company.
Your instrument has a limited warranty against defective materials and/or
workmanship for one year from the date of purchase provided that, in the
opinion of the factory, the instrument has not been tampered with or taken
apart.
Should your instrument fail due to defective materials, and/or workmanship
during this one-year period, a no charge repair or replacement will be made to
the original purchaser. Please have your dated bill of sale, which must
identify the instrument model number and serial number and call the number
listed below:
AMPROBE / Repair Department • Miramar, FL 33025
Phone: 954-499-5400 • Toll Free:
800-327-5060 • Fax:
954-499-5418
Website: www.Amprobe.com
Please obtain an RMA number before returning product for repair.
Outside the U.S.A. the local representative will assist you. Above limited
warranty covers repair and replacement of instrument only and no other
obligation is stated or implied.