Fluke 381 User manual

Technical Data
Measurement capability
• 1000 A ac and dc current
measurement with fixed jaw
• 2500 A ac current measure-
ment with iFlex™ flexible
current probe
• 1000 V ac and dc voltage
measurement
• True-rms ac voltage and
current for accurate measure-
ments on non-linear signals
• Frequency measurement to
500 Hz with both jaw and
iFlex™
• 60 kΩ resistance mea-
surement with continuity
detection
• Min, max, average and inrush
recording to capture varia-
tions automatically
Features
• Wireless technology allows
the display to be carried up to
30 ft away from the point of
measurement for added flex-
ibility without interference
with measurement accuracy
• iFlex™ flexible current probe
expands the measurement
range to 2500 A ac while
providing increased display
flexibility, ability to measure
awkward sized conductors
and improved wire access
• CAT IV 600V, CAT III 1000 V
safety rating
• Integrated low pass filter
and state of the art signal
processing allows for use
in noisy electrical environ-
ments while providing stable
readings
The first clamp meter with a detachable, remote
display for easier, faster, safer measurements
381 Remote Display True-rms
AC/DC Clamp Meter with iFlex™
The new Fluke 381 does everything you would expect from a
clamp meter, and then lets you remove the display for even more
flexibility. Now one technician can do jobs that used to require
two people; clamp the Fluke 381 around a conductor, remove the
display and walk across the room to operate controls or remove
protective equipment, all while watching real-time readings. The
new iFlex™ flexible current probe (included) expands the mea-
surement range to 2500 A ac while providing increased display
flexibility, ability to measure awkward sized conductors and
improved wire access.
USC
®

2 Fluke Corporation 381 Remote Display True-rms AC/DC Clamp Meter with iFlex™
• Proprietary inrush measure-
ment technology to filter
out noise and capture motor
starting current exactly as the
circuit protection sees it
• Ergonomic design fits in your
hand and can be used while
wearing personal protective
equipment
• The removable magnetic
display can be conveniently
mounted where it is easily
seen
• Radio transmitter auto-
matically turns off when the
display is connected to the
meter
• Large, easy to read, backlight
display automatically sets the
correct measurement range
so you do not need to change
switch positions while taking
a measurement
• Three-year warranty
• Soft carrying case
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Specifications
Fluke 381 Range Resolution Accuracy
AC current via jaw 999.9 A 0.1 A 2 % ± 5 digits
AC current via iFlex™2500 A 0.1 A 3 % ± 5 digits
DC current 999.9 A 0.1 A 2 % ± 5 digits
AC voltage 1000 V 0.1 V 1.5 % ± 5 digits
DC voltage 1000 V 0.1 V 1 % ± 5 digits
Resistance 60,000 Ω0.1 Ω1 % ± 5 digits
Frequency 500 Hz 0.1 Hz 0.5 % ± 5 digits
True-rms •
Continuity •
Hold •
Backlight •
Min/Max •
Inrush •
Low pass filter •
Removable wireless
display •
18 inch iFlex™ Flexible
Current Probe Included
10 inch iFlex™ Flexible
Current Probe Accessory
Wire capacity 750 MCM or 2-500 MCM
Safety rating CAT III 1000V, CAT IV 600V
Ordering information
381 Remote Display True-rms
Clamp Meter with iFlex™