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

For added safety and convenience the Fluke 381 Clamp Meter + detachable display allows you to take readings remotely or in tough-to-reach spots. Learn More.

Overview
Features
Reviews
Specs
Models
Accessories
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  • What Once Took Two People, Now Takes One

    Now one technician can do jobs that would otherwise 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 iFlex® Flexible Current Probe (included) expands the measurement range to 2500 A AC while providing increased display flexibility. With a cord that runs 6 feet, you can finally measure those tight spaces, awkward sized conductors and disorganized wires.

  • Features and Benefits

    • Wireless technology allows the display to be carried up to 30 ft. away from the point of measurement for added flexibility without interference with measurement accuracy
    • The removable magnetic display can be conveniently mounted where it is easily seen
    • iFlex® Flexible Current Probe expands the measurement range to 2500 A AC
    • CAT IV 600 V, CAT III 1000 V
    • Integrated low pass filter and state-of-the-art signal processing allows for use in noisy electrical environments while providing stable readings
    • Proprietary inrush measurement 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 protective equipment
    • Radio transmitter automatically sets the correct measurement range so you do not need to change the switch positions while taking a measurement
    • Three-year warranty
    • Soft carrying case

    Safety Conformance
    IEC/EN 61010-1:2001, 1000V CAT III, 600V CAT IV

  • 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
    Flexible current probe 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
    • Models
      Model Name Description  
      Fluke 381 Fluke 381 Remote Display True RMS AC/DC Clamp Meter with iFlex®
       

      Includes:

      • 18-inch iFlex® flexible current probe
      • Coated instruction card
      • Safety information sheet
      • Soft carrying case
      • TL75 test leads
      • Five AA Alkaline batteries
    • Manuals
      Title  
      381 دليل المستخدم Download
      381 用户手册 Download
      381 使用手冊 Download
      381 Uživatelská příručka Download
      381 Brugsanvisning Download
      381 Handleiding Download
      381 Users Manual Download
      381 Käyttöohje Download
      381 Mode d'emploi Download
      381 Bedienungshandbuch Download
      381 Manuale per l’uso Download
      381 ユーザーズ・マニュアル Download
      381 Users Manual Download
      381 Brukerhåndbok Download
      381 Instrukcja użytkownika Download
      381 Manual do usuário Download
      381 Руководство пользователя Download
      381 Manual de uso Download
      381 Användarhandbok Download
      381 คมอผใช Download
      381 Users Manual Supplement Download
      381 Calibration Manual Download
      381 Calibration Manual Supplement Download
      381 Printable Help Download
      381 Quick Reference Guide Download
      381 Statement of Memory Volatility Download
      i2500-18/i2500-10 Quick Reference Guide Download
    • Application Notes
      Title  
      Clamp meter ABCs Download
      Electronics in your building don't like power problems Download
      Inrush current Download
      My chiller plant is down, do you know how incredibly critical that is? Download
      Proper use of clamp meters in commercial and residential settings Download
      Real-world challenge: The air handler and NFPA 70B Download
      Troubleshooting photovoltaic systems: Three typical problems Download
      Who sets the rules for electrical testing and safety? Download
    • Brochures
      Title  
      Clamp Family Brochure Download
      Clamp Meter Selection Guide Download
    • Data Sheets
      Title  
      Fluke 381 Data Sheet Download
    • Demos
      Title  
      Fluke 376 and iFlex® Interactive Virtual Demo Download
      Fluke 381 and iFlex 376 iFlex® Interactive Virtual Demo Download
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