Fluke 381 Remote Display True RMS AC/DC Clamp Meter with iFlex®

True RMS Measurement: Ensures accurate measurements of complex waveforms.
High Current Measurement: Measures both AC and DC current, up to 1000A AC/DC.
Flexible iFlex® Current Probe: Expands the measurement range up to 2500A AC.
Wireless Remote Display: Enables remote viewing of measurements.
AC/DC Voltage Measurement: Measures both AC and DC voltages.
Resistance Measurement: Measures resistance of components and circuits.
Continuity Testing: Checks for continuity in electrical circuits.
Frequency Measurement: Measures both voltage and current frequencies.
Capacitance Measurement: Measures capacitance of capacitors.
Diode Testing: Tests diodes and other semiconductor devices.
Backlit Display: Ensures easy readability in low-light conditions.

Category: Clamp Meters

Description
Additional information
Specifications
Models

Description

The Fluke 381 is a powerful and versatile clamp meter designed to handle a wide range of electrical testing tasks. Its unique remote display and flexible current probe make it an essential tool for professionals working in demanding environments.

Key Features:

True RMS Measurement: Ensures accurate measurements of complex waveforms, including those found in variable speed drives and other electronic devices.
High Current Measurement: Measures both AC and DC current, including high-current applications up to 1000A AC/DC.
Flexible iFlex® Current Probe: Expands the measurement range up to 2500A AC, allowing for accurate measurements on large conductors and in tight spaces.
Wireless Remote Display: Enables remote viewing of measurements, allowing for safer and more convenient operation.
AC/DC Voltage Measurement: Accurately measures both AC and DC voltages for troubleshooting and diagnostics.
Resistance Measurement: Determines the resistance of components and circuits, aiding in fault identification and component selection.
Continuity Testing: Quickly checks the continuity of electrical paths, ensuring proper connections and identifying breaks in circuits.
Frequency Measurement: Measures both voltage and current frequencies, helping to analyze power quality and identify potential issues.
Capacitance Measurement: Determines the capacitance of capacitors, aiding in component selection and troubleshooting.
Diode Testing: Verifies the functionality of diodes and other semiconductor devices.

Applications:

Electrical Maintenance and Troubleshooting: Quickly identify and diagnose electrical problems in residential, commercial, and industrial settings.
HVAC System Maintenance: Measure voltage, current, and other parameters to ensure optimal performance of HVAC systems.
Automotive Electrical Systems: Test battery voltage, charging system, and other electrical components.
Industrial Automation: Monitor and troubleshoot control systems and motor drives.
Solar Power Systems: Measure voltage, current, and frequency of solar panels and inverters.

With its robust construction, advanced features, and innovative design, the Fluke 381 is a powerful tool for professionals who demand accuracy, versatility, and convenience in their electrical testing tasks.

Additional information

Brand	Fluke

Specifications

Specifications: Fluke 381 Remote Display True RMS AC/DC Clamp Meter with iFlex®

Electrical Specifications
AC Current via Jaw
Range	999.9 A
Resolution	0.1 A
Accuracy	2% ± 5 digits (10-100 Hz) 5% ± 5 digits (100-500 Hz)
Crest Factor (50/60 Hz)	3 @ 500 A 2.5 @ 600 A 1.42 @ 1000 A Add 2% for C.F. > 2
AC Current via Flexible Current Probe
Range	999.9 A / 2500 A (45 Hz – 500 Hz)
Resolution	0.1 A / 1 A
Accuracy	3% ± 5 digits
Crest Factor (50/60 Hz)	3.0 at 1100 A 2.5 at 1400 A 1.42 at 2500 A Add 2% for C.F. > 2
Position Sensitivity
	Distance from Optimum
		i2500-10 Flex	i2500-18 Flex	Error
	A	0.5 in (12.7 mm)	1.4 in (35.6 mm)	±0.5%
	B	0.8 in (20.3 mm)	2.0 in (50.8 mm)	±1.0%
	C	1.4 in (35.6 mm)	2.5 in (63.5 mm)	±2.0%
Measurement uncertainty assumes centralized primary conductor at optimum position, no external electrical or magnetic field, and within operating temperature range.
DC Current
Range	999.9 A
Resolution	0.1 A
Accuracy	2% ± 5 digits
AC Voltage
Range	600 V /1000 V
Resolution	0.1 V / 1 V
Accuracy	1.5% ± 5 digits (20 – 500 Hz)
DC Voltage
Range	600.0 V /1000 V
Resolution	0.1 V / 1 V
Accuracy	1% ± 5 digits
Frequency – Via Jaw
Range	5.0 – 500.0 Hz
Resolution	0.1 Hz
Accuracy	0.5% ± 5 digits
Trigger Level	5 – 10 Hz, ≥ 10 A 10 – 100 Hz, ≥ 5 A 100 – 500 Hz, ≥ 10 A
Frequency via Flexible Current Probe
Range	5.0 to 500.0 Hz
Resolution	0.1 Hz
Accuracy	0.5% ± 5 digits
Trigger Level	5 to 20 Hz, ≥ 25 A 20 to 100 Hz, ≥ 20 A 100 to 500 Hz, ≥ 25 A
Resistance
Range	600 Ω/6 kΩ/60 kΩ
Resolution	0.1 Ω/1 Ω/10 Ω
Accuracy	1% ± 5 digits
Mechanical Specifications
Size (L x W x H)	277 x 88 x 43 mm (55 mm for remote unit)
Weight	350 g
Jaw Opening	34 mm
Flexible Current Probe Diameter	7.5 mm
Flexible Current Probe Cable Length (head to electronics connector)	1.8 m
Environmental Specifications
Operating Temperature	-10°C to +50°C
Storage Temperature	-40°C to +60°C
Operating Humidity	Non condensing (< 10°C) ≤ 90% RH (at 10°C to 30°C) ≤ 75% RH (at 30°C to 40°C) ≤ 45% RH (at 40°C to 50°C) (Without Condensation)
Operating Altitude	2,000 meters
Storage Altitude	12,000 meters
EMI, RFI, EMC, RF	EN 61326-1:2006, EN 61326-2-2:2006 ETSI EN 300 328 V1.7.1:2006 ETSI EN 300 489 V1.8.1:2008 FCC Part 15 Subpart C Sections 15.207, 15.209, 15.249 FCCID: T68-F381 RSS-210 IC: 6627A-F381
Temperature Coefficients	Add 0.1 x specified accuracy for each degree C above 28°C or below 18°C
Wireless Frequency	2.4 GHz ISM Band 10 meter range
Safety Compliance	ANSI/ISA S82.02.01:2004 CAN/CSA-C22.2 No. 61010-1-04 IEC/EN 61010-1:2001 to 1000V CAT III, 600V CAT IV.
Double Insulation Clearance	Per IEC 61010-2-032
Double Insulation Creepage	Per IEC 61010-1
Agency Approvals