Fluke 381 Clamp Meter Product Datasheet
Page 1
381 Remote Display True-rms AC/DC Clamp Meter with iFlex™ The first clamp meter with a detachable, remote display for easier, faster, safer measurements Technical Data The new Fluke 381 does everything you would expect from the point of the art signal processing allows for even more flexibility. ...8226; Wireless technology allows the display to be carried up to 30 ft away from a clamp meter, and then lets you remove the display for use in noisy electrical environments while providing stable readings clamp the Fluke 381 around a conductor, remove the display and walk across the room ...
381 Remote Display True-rms AC/DC Clamp Meter with iFlex™ The first clamp meter with a detachable, remote display for easier, faster, safer measurements Technical Data The new Fluke 381 does everything you would expect from the point of the art signal processing allows for even more flexibility. ...8226; Wireless technology allows the display to be carried up to 30 ft away from a clamp meter, and then lets you remove the display for use in noisy electrical environments while providing stable readings clamp the Fluke 381 around a conductor, remove the display and walk across the room ...
Fluke 381 Clamp Meter Product Datasheet
Page 2
... you do not need to change switch positions while taking a measurement • Three-year warranty • Soft carrying case Ordering information 381 Remote Display True-rms Clamp Meter with iFlex™ Specifications Fluke 381 AC current via jaw AC current via iFlex™ DC current AC voltage DC voltage Resistance Frequency...5 digits 2 % ± 5 digits 1.5 % ± 5 digits 1 % ± 5 digits 1 % ± 5 digits 0.5 % ± 5 digits Included Accessory 750 MCM or 2-500 MCM CAT III 1000V, CAT IV 600V 2 Fluke Corporation 381 Remote Display True-rms AC/DC Clamp Meter with iFlex™
... you do not need to change switch positions while taking a measurement • Three-year warranty • Soft carrying case Ordering information 381 Remote Display True-rms Clamp Meter with iFlex™ Specifications Fluke 381 AC current via jaw AC current via iFlex™ DC current AC voltage DC voltage Resistance Frequency...5 digits 2 % ± 5 digits 1.5 % ± 5 digits 1 % ± 5 digits 1 % ± 5 digits 0.5 % ± 5 digits Included Accessory 750 MCM or 2-500 MCM CAT III 1000V, CAT IV 600V 2 Fluke Corporation 381 Remote Display True-rms AC/DC Clamp Meter with iFlex™
Fluke 381 Users Manual
Page 1
All rights reserved. Specifications are trademarks of their respective companies. All product names are subject to change without notice. Printed in China. 381 Remote Display True-rms Clamp Meter Users Manual PN 3538357 July 2010 © 2010 Fluke Corporation.
All rights reserved. Specifications are trademarks of their respective companies. All product names are subject to change without notice. Printed in China. 381 Remote Display True-rms Clamp Meter Users Manual PN 3538357 July 2010 © 2010 Fluke Corporation.
Fluke 381 Users Manual
Page 7
... apply more than the rated voltage, as the low battery indicator (B or Q) appears. • When servicing the Meter, use the Meter if it operates incorrectly. Remote Display True-rms Clamp Meter Safety Information • Examine the test leads for damaged insulation or exposed metal. Check test lead continuity.
... apply more than the rated voltage, as the low battery indicator (B or Q) appears. • When servicing the Meter, use the Meter if it operates incorrectly. Remote Display True-rms Clamp Meter Safety Information • Examine the test leads for damaged insulation or exposed metal. Check test lead continuity.
Fluke 381 Users Manual
Page 9
Important information. X Hazardous voltage P Conforms to Fluke's website for recycling information. 5 B Battery. Go to European Union directives. See Manual. ) Conforms to relevant North American Safety Standards. Remote Display True-rms Clamp Meter Safety Information Table 1. Symbols Symbol B F Meaning AC (Alternating Current) DC (Direct Current) Symbol J P Meaning Earth ground AC and dc current. T Double insulated ~ Do not dispose of Danger. W Risk of this product as unsorted municipal waste. Low battery when shown.
Important information. X Hazardous voltage P Conforms to Fluke's website for recycling information. 5 B Battery. Go to European Union directives. See Manual. ) Conforms to relevant North American Safety Standards. Remote Display True-rms Clamp Meter Safety Information Table 1. Symbols Symbol B F Meaning AC (Alternating Current) DC (Direct Current) Symbol J P Meaning Earth ground AC and dc current. T Double insulated ~ Do not dispose of Danger. W Risk of this product as unsorted municipal waste. Low battery when shown.
Fluke 381 Users Manual
Page 11
... determined by turning the equipment 7 This equipment generates, uses, and can not cause interference. 2. Remote Display True-rms Clamp Meter Radio Frequency Data Radio Frequency Data Note Changes or modifications to the wireless 2.4 GHz radio not expressly approved by Fluke Corporation could void the user's authority to the two conditions that follow: 1. This device can...
... determined by turning the equipment 7 This equipment generates, uses, and can not cause interference. 2. Remote Display True-rms Clamp Meter Radio Frequency Data Radio Frequency Data Note Changes or modifications to the wireless 2.4 GHz radio not expressly approved by Fluke Corporation could void the user's authority to the two conditions that follow: 1. This device can...
Fluke 381 Users Manual
Page 13
There is broken. To detach the display from each other before the radio signal connection is a radio connection when shows in the display. This distance can be a maximum of 10 meters from the Meter base, see Figure 1. 1 2 Figure 1. Remote Display True-rms Clamp Meter Features The Meter base and display can change with the obstacles between the Meter base and display. Remote Display ghn10.eps 9
There is broken. To detach the display from each other before the radio signal connection is a radio connection when shows in the display. This distance can be a maximum of 10 meters from the Meter base, see Figure 1. 1 2 Figure 1. Remote Display True-rms Clamp Meter Features The Meter base and display can change with the obstacles between the Meter base and display. Remote Display ghn10.eps 9
Fluke 381 Users Manual
Page 15
... Min Max Avg mode, push again to the live reading. When Min Max Avg mode is active, the Auto Power Off feature is disabled. Remote Display True-rms Clamp Meter Features Backlight Push to toggle the Backlight on the Meter. Push again to return to toggle between min and max... readings. DC Current Zero Push to display the average reading. Display Hold To capture and hold for 2 seconds. Push a third time to remove any dc offset that could affect the accuracy of a...
... Min Max Avg mode, push again to the live reading. When Min Max Avg mode is active, the Auto Power Off feature is disabled. Remote Display True-rms Clamp Meter Features Backlight Push to toggle the Backlight on the Meter. Push again to return to toggle between min and max... readings. DC Current Zero Push to display the average reading. Display Hold To capture and hold for 2 seconds. Push a third time to remove any dc offset that could affect the accuracy of a...
Fluke 381 Users Manual
Page 19
Push a second time to meet accuracy specifications, the conductor must be aligned with these marks. Integration time is 100 ms. Jaw release Alignment marks: to exit inrush mode. Remote Display True-rms Clamp Meter Features Item J K L M N O P Description Zero/Shift button: removes dc offset from dc current measurements. Common terminal Volts/Ohm input terminal Flexible Current Probe input terminal 15 Inrush button: push to the yellow items on the Rotary Function Switch. Also used to shift and corresponds to enter inrush mode.
Push a second time to meet accuracy specifications, the conductor must be aligned with these marks. Integration time is 100 ms. Jaw release Alignment marks: to exit inrush mode. Remote Display True-rms Clamp Meter Features Item J K L M N O P Description Zero/Shift button: removes dc offset from dc current measurements. Common terminal Volts/Ohm input terminal Flexible Current Probe input terminal 15 Inrush button: push to the yellow items on the Rotary Function Switch. Also used to shift and corresponds to enter inrush mode.
Fluke 381 Users Manual
Page 21
See Figure 3 and Table 4. 15 14 13 12 11 10 1 2 3 9 8 Figure 3. Display 4 5 6 7 ghn01.eps 17 Remote Display True-rms Clamp Meter Features Display To view all segments on the display at once, push H while turning the Meter on.
See Figure 3 and Table 4. 15 14 13 12 11 10 1 2 3 9 8 Figure 3. Display 4 5 6 7 ghn01.eps 17 Remote Display True-rms Clamp Meter Features Display To view all segments on the display at once, push H while turning the Meter on.
Fluke 381 Users Manual
Page 23
... Jaw using the alignment marks on the Jaw. Note When measuring current, center the conductor in the dc current measurement Rotary Function Switch position. 19 Remote Display True-rms Clamp Meter Measurements Measurements Note Prior to ensure correct readings. AC and DC Current (Jaw) XW Warning To avoid electric shock or personal injury: •...
... Jaw using the alignment marks on the Jaw. Note When measuring current, center the conductor in the dc current measurement Rotary Function Switch position. 19 Remote Display True-rms Clamp Meter Measurements Measurements Note Prior to ensure correct readings. AC and DC Current (Jaw) XW Warning To avoid electric shock or personal injury: •...
Fluke 381 Users Manual
Page 25
CAT 1000 V CAT 600 V 1000 A Remote Display True-rms Clamp Meter Measurements 6C01A0C0TV0A0TV 381 TRRMEMS OCTLEAMDPISPMLEATYER iFlex 1000 A Figure 4. Current Measurement with Jaw ghn04.eps 21
CAT 1000 V CAT 600 V 1000 A Remote Display True-rms Clamp Meter Measurements 6C01A0C0TV0A0TV 381 TRRMEMS OCTLEAMDPISPMLEATYER iFlex 1000 A Figure 4. Current Measurement with Jaw ghn04.eps 21
Fluke 381 Users Manual
Page 27
...terminal and the red test lead to the proper voltage function (V or L). 2. View the reading on the Meter display. Observe the current value on the display. 23 Measure the voltage by touching the probes to make sure that the Rotary Function Switch of the circuit. ... desired test points of the Meter is in the display icon (X) will flash on and off. If the Flexible Current Probe does not perform as expected: 1. If any damage. With current > 0.5 A, the center dot will not close properly. 2. Remote Display True-rms Clamp Meter Measurements Note When the measured current is...
...terminal and the red test lead to the proper voltage function (V or L). 2. View the reading on the Meter display. Observe the current value on the display. 23 Measure the voltage by touching the probes to make sure that the Rotary Function Switch of the circuit. ... desired test points of the Meter is in the display icon (X) will flash on and off. If the Flexible Current Probe does not perform as expected: 1. If any damage. With current > 0.5 A, the center dot will not close properly. 2. Remote Display True-rms Clamp Meter Measurements Note When the measured current is...
Fluke 381 Users Manual
Page 33
... thumb, push down and slide the door towards you to the case bottom and tighten the screw. Remove the batteries. 5. Dock the Display Module with the Meter base and turn the Meter on the Meter base, and remove the door from the case bottom. 3. On the...two new AAA batteries. 6. Reattach the battery compartment door to open the battery compartment, 4. Replace the batteries with three new AAA batteries. 5. Remote Display True-rms Clamp Meter Maintenance Battery Replacement To replace the batteries in the Meter body, see Figure 8: 1. Turn the Meter OFF. 2. Using the two latches...
... thumb, push down and slide the door towards you to the case bottom and tighten the screw. Remove the batteries. 5. Dock the Display Module with the Meter base and turn the Meter on the Meter base, and remove the door from the case bottom. 3. On the...two new AAA batteries. 6. Reattach the battery compartment door to open the battery compartment, 4. Replace the batteries with three new AAA batteries. 5. Remote Display True-rms Clamp Meter Maintenance Battery Replacement To replace the batteries in the Meter body, see Figure 8: 1. Turn the Meter OFF. 2. Using the two latches...
Fluke 381 Users Manual
Page 35
Remote Display True-rms Clamp Meter User-Replaceable Parts User-Replaceable Parts Table 5. Display Module 1 3625529 Battery Door - Fluke Part Number Battery, AAA 1.5 V 5 2838018 Battery Door - Meter Base 1 3766406 Fluke 381 Remote Display 1 3766445 Soft Case 1 3752973 User Manual 1 3538357 31 User-Replaceable Parts Description Qty.
Remote Display True-rms Clamp Meter User-Replaceable Parts User-Replaceable Parts Table 5. Display Module 1 3625529 Battery Door - Fluke Part Number Battery, AAA 1.5 V 5 2838018 Battery Door - Meter Base 1 3766406 Fluke 381 Remote Display 1 3766445 Soft Case 1 3752973 User Manual 1 3538357 31 User-Replaceable Parts Description Qty.
Fluke 381 Users Manual
Page 37
Remote Display True-rms Clamp Meter Specifications 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 (50/60Hz 3.0 at 1100 A 2.5 at 1400 A 1.42 at 2500 A Add 2 % for C.F. > 2 33
Remote Display True-rms Clamp Meter Specifications 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 (50/60Hz 3.0 at 1100 A 2.5 at 1400 A 1.42 at 2500 A Add 2 % for C.F. > 2 33
Fluke 381 Users Manual
Page 39
Remote Display True-rms Clamp Meter Specifications Distance from Optimum A i2500-10 Flex 0.5 in (12.7 mm) i2500-18 Flex 1.4 in (35.6 mm) Error ± 0.5 % B 0.8 in (20.3 mm) 2.0 in (50.8 ...
Remote Display True-rms Clamp Meter Specifications Distance from Optimum A i2500-10 Flex 0.5 in (12.7 mm) i2500-18 Flex 1.4 in (35.6 mm) Error ± 0.5 % B 0.8 in (20.3 mm) 2.0 in (50.8 ...
Fluke 381 Users Manual
Page 41
Remote Display True-rms Clamp Meter Specifications 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 mm *88 mm * 43 mm (55 mm for remote unit) Weight 350 g Jaw Opening 34 mm Flexible Current Probe Diameter 7.5 mm 37
Remote Display True-rms Clamp Meter Specifications 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 mm *88 mm * 43 mm (55 mm for remote unit) Weight 350 g Jaw Opening 34 mm Flexible Current Probe Diameter 7.5 mm 37
Fluke 381 Users Manual
Page 43
Double Insulation Clearance Per IEC 61010-2-032 Double Insulation Creepage Per IEC 61010-1 Agency Approvals P, ), ;, ® 39 Remote Display True-rms Clamp Meter Specifications 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 P, ), ;, ® 39 Remote Display True-rms Clamp Meter Specifications 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.