Extech EX720, EX730 Instruction Manual
User's Guide
800 Amp Clamp Meters
EX710 AC Clamp meter
EX720 True RMS AC Clamp meter
EX730 AC/DC True RMS Clamp meter
2
Introduction
Congratulations on your purchase of the EX710, EX720, or EX730 Clamp DMM. Careful
use of this meter will provide many years of reliable service.
Safety
International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the user must refer
to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present
Double insulation
SAFETY NOTES
Do not exceed the maximum allowable input range of any function.
Do not apply voltage to meter when resistance function is selected.
Set the function switch OFF when the meter is not in use.
Remove the battery if meter is to be stored for longer than 60 days.
WARNINGS
Set function switch to the appropriate position before measuring.
When measuring volts do not switch to current/resistance modes.
Do not measure current on a circuit whose voltage exceeds 600V.
When changing ranges always disconnect the test leads from the circuit under test.
UL Note
A UL mark does not indicate that this product has been evaluated for accuracy.
Function Maximum Input
A AC, A DC (ADC on Model EX730 only) 800A DC/AC
V DC, V AC 600V DC/AC
Resistance, Capacitance, Frequency, Diode Test 250V DC/AC
Temperature (EX720 & EX730 only) 60V DC, 24V AC
EX710-720-730 –EU_ENG V3.0 4/05
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CAUTIONS
Improper use of this meter can cause damage, shock, injury or death. Read and
understand this user manual before operating the meter.
Always remove the test leads before replacing the battery or fuses.
Inspect the condition of the test leads and the meter itself for any damage before
operating the meter. Repair or replace any damage before use.
Use great care when making measurements if the voltages are greater than 25VAC
rms or 35VDC. These voltages are considered a shock hazard.
Always discharge capacitors and remove power from the device under test before
performing Diode, Resistance or Continuity tests.
Voltage checks on electrical outlets can be difficult and misleading because of the
uncertainty of connection to the recessed electrical contacts. Other means should be
used to ensure that the terminals are not "live".
If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
This device is not a toy and must not reach children’s hands. It contains hazardous
objects as well as small parts that the children could swallow. In case a child
swallows any of them, please contact a physician immediately
Do not leave batteries and packing material lying around unattended; they can be
dangerous for children if they use them as toys
In case the device is going to be unused for an extended period of time, remove the
batteries to prevent them from training
Expired or damaged batteries can cause cauterization on contact with the skin.
Always, therefore, use suitable hand gloves in such cases
See that the batteries are not short-circuited. Do not throw batteries into the fire.
EX710-720-730 –EU_ENG V3.0 4/05
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Description
Meter Description (Picture of EX730)
1. Current clamp
2. Clamp opening trigger
3. Control buttons:
Data Hold
Mode
Peak
Backlight
DCA Zero (EX730 only)
4. Backlit LCD Display
5. COM negative input jack for black test lead
6. Rotary function switch
7. V··CAP·TEMP·Hz· positive input jack for red
lead
Display icons Description
HOLD Data Hold
Minus sign Negative reading display
0 to 3999 Measurement display digits
DC ZERO DCA Zero (Model EX730 only)
PEAK Peak capture
AUTO Auto Range mode
DC/AC Direct Current / Alternating Current
BAT Low battery
mV or V Milli-volts or Volts (Voltage)
Ohms (Resistance)
A Amperes (Current)
F Farad (Capacitance)
Hz Hertz (Frequency)
o
F andoC Fahrenheit and Celsius units (Temperature) (Model EX730 only)
n, m, , M, k Unit of measure prefixes: nano, milli, micro, mega, and kilo
))) Continuity test
Diode test
EX710-720-730 –EU_ENG V3.0 4/05
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