Product Code: FLU381
In Stock
*Important Calibration Information:
This instrument comes with a ‘manufacturer's certificate of conformity’. It is important to understand that this does NOT constitute a ‘traceable calibration certificate’. A certificate of conformity merely states that the equipment has been designed and produced to meet the requirements of its intended application.
Where calibration of an instrument is possible, we will offer this as a separately purchasable item and may be selected from the drop-down box above. You will be sent a full traceable calibration certificate produced in our laboratory and applied with your details as required.
The 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 iFlex flexible current probe (included) expands the measurement range to 2500 A ac while providing increased display flexibility, ability to measure awkward sized conductors and improved wire access.
Fluke-365 | Fluke-373 | Fluke-374 | Fluke-375 | Fluke-376 | Fluke-381 | |
Measure ac current | 200.0 A | 600.0 A | 600.0 A | 600.0 A | 999.9 A | 999.9 A |
Measure ac current via iFlex | 2500 A | 2500 A | 2500 A | 2500 A | ||
Measure ac voltage | 600.0 V | 600.0 V | 600.0 V | 600.0 V | 1000.0 V | 1000.0 V |
Measure continuity | ≤ 30 Ω | ≤ 30 Ω | ≤ 30 Ω | ≤ 30 Ω | ≤ 30 Ω | ≤ 30 Ω |
Measure dccurrent | 200.0 A | 600.0 A | 600.0 A | 999.9 A | 999.9 A | |
Measure dc voltage | 600.0 V | 600.0 V | 600.0 V | 1000.0 V | 1000.0 V | |
Measure resistance | 6,000 Ω | 6,000 Ω | 6,000 Ω | 60k Ω | 60k Ω | 60k Ω |
Measure frequency | 500 Hz | 500 Hz | 500 Hz | |||
Measure inrush | 100 mS | 100 mS | 100 mS | 100 mS | ||
Work in poorly lit areas | Backlight | Backlight | Backlight | Backlight | Backlight | Backlight |
Measure non-linear loads | True-rms | True-rms | True-rms | True-rms | True-rms | True-rms |
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 | ![]() |
UK Mainland | Order by 2pm for Next Day Delivery* |
---|---|
Under £25.00 | £4.50 |
Over £25.00 | FREE |
UK Highlands & Islands | Order by 2pm for Next Day Delivery* |
---|---|
Under £80.00 | £15.00 |
Over £80.00 | FREE |