Fluke 381 User Manual

381
Users Manual
10
Hazardous Voltage Indicator
When the Meter senses a voltage ±30 V or a voltage overload (OL), Y is shown on the display
and the red high-voltage LED () on the Meter base illuminates to tell you a hazardous voltage
is at the Meter input.
Flexible Current Probe
XWWarning
To avoid electrical shock, do not apply or remove from live hazardous
conductors.
The high-performance AC Flexible Current Probe utilizes the Rogowski principle and is used for
accurate, non-intrusive measurement of sinusoidal, pulsed, and other complex waveforms. The
flexible and lightweight measuring head allows quick and easy installation in hard-to-reach areas
and works well with large conductors.
For more information about the Flexible Current Probe, see “Current Measurement (Flexible
Current Probe)”.
Auto Power Off
The Meter powers off if there is no button push or Rotary Function Switch operation for
20 minutes. If the Meter powers off, turn the Rotary Function Switch OFF and then back on again.
Auto Power Off is disabled during Min Max Avg function use. To disable the Auto Power Off, hold
down  while turning on the Meter.

Fluke 381 Specifications

General

Continuity	60 Ω
Resistance (max)	600 Ω
Resistance (min)	6 Ω
Measuring category	CAT III 1000V, CAT IV 600V
AC voltage resolution (min)	600 V
AC current maximum resolution (probe)	2500 A
Product color	Yellow
Operating altitude	0 - 2000 m
Non-operating altitude	0 - 12000 m
Storage temperature (T-T)	-40 - 60 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	0 - 90 %
Probe length	1800 mm
Carrying case	Yes
Probe diameter	7.5 mm

Weight and Dimensions

Depth	277 mm
Width	88 mm
Height	43 mm
Weight	350 g