Fluke 381 Users Manual
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Printed in China. Specifications are trademarks of their respective companies. 381 Remote Display True-rms Clamp Meter Users Manual PN 3538357 July 2010 © 2010 Fluke Corporation. All product names are subject to change without notice. All rights reserved.
Printed in China. Specifications are trademarks of their respective companies. 381 Remote Display True-rms Clamp Meter Users Manual PN 3538357 July 2010 © 2010 Fluke Corporation. All product names are subject to change without notice. All rights reserved.
Fluke 381 Users Manual
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381 Users Manual Display...17 Measurements...19 AC and DC Current (Jaw 19 AC Current (Flexible Current Probe 22 AC and DC Voltage 23 Resistance/Continuity 26 Inrush Current Measurement (Jaw and Flexible Current Probe 26 Frequency Measurement (Jaw and Flexible Current Probe 28 Maintenance...28 Cleaning the Meter and Flexible Current Probe 28 Battery Replacement 29 User-Replaceable Parts 31 Specifications ...32 Electrical Specifications 32 Mechanical Specifications 37 Environmental Specifications 38 ii
381 Users Manual Display...17 Measurements...19 AC and DC Current (Jaw 19 AC Current (Flexible Current Probe 22 AC and DC Voltage 23 Resistance/Continuity 26 Inrush Current Measurement (Jaw and Flexible Current Probe 26 Frequency Measurement (Jaw and Flexible Current Probe 28 Maintenance...28 Cleaning the Meter and Flexible Current Probe 28 Battery Replacement 29 User-Replaceable Parts 31 Specifications ...32 Electrical Specifications 32 Mechanical Specifications 37 Environmental Specifications 38 ii
Fluke 381 Users Manual
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... that could cause Meter damage, equipment under test damage, or permanent loss of data. 381 Users Manual • Singapore: +65-738-5655 • Anywhere in Table 1. To see, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals. Carefully look at the insulation around the connectors. • Never measure ac current...
... that could cause Meter damage, equipment under test damage, or permanent loss of data. 381 Users Manual • Singapore: +65-738-5655 • Anywhere in Table 1. To see, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals. Carefully look at the insulation around the connectors. • Never measure ac current...
Fluke 381 Users Manual
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.... • Adhere to local and national safety codes. energize the installation under test: • Use the proper jacks, function, and range for the measurement application. 4 381 Users Manual • Use extreme caution when working around or remove from HAZARDOUS LIVE conductors. • Take special care during fitting and removal of the Flexible Current...
.... • Adhere to local and national safety codes. energize the installation under test: • Use the proper jacks, function, and range for the measurement application. 4 381 Users Manual • Use extreme caution when working around or remove from HAZARDOUS LIVE conductors. • Take special care during fitting and removal of the Flexible Current...
Fluke 381 Users Manual
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381 Users Manual Symbol Meaning Symbol Meaning CAT III IEC Measurement Category III CAT III equipment has protection against transients from HAZARDOUS LIVE conductors is the LOWEST rating ...
381 Users Manual Symbol Meaning Symbol Meaning CAT III IEC Measurement Category III CAT III equipment has protection against transients from HAZARDOUS LIVE conductors is the LOWEST rating ...
Fluke 381 Users Manual
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...; Consult the dealer or an experienced radio/TV technician for the radio signal to be synchronized to a Meter base at the same time. 8 381 Users Manual off and on, the user is encouraged to try to correct the interference by one display module can be synchronized with a Meter base when it is docked on...
...; Consult the dealer or an experienced radio/TV technician for the radio signal to be synchronized to a Meter base at the same time. 8 381 Users Manual off and on, the user is encouraged to try to correct the interference by one display module can be synchronized with a Meter base when it is docked on...
Fluke 381 Users Manual
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381 Users Manual 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 (...
381 Users Manual 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 (...
Fluke 381 Users Manual
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381 Users Manual Inrush Inrush Current is surge current that occurs when an electrical device is displayed, the batteries for the removable display should be changed . Low batteries ...
381 Users Manual Inrush Inrush Current is surge current that occurs when an electrical device is displayed, the batteries for the removable display should be changed . Low batteries ...
Fluke 381 Users Manual
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381 Users Manual Item A B C D E F G H I Table 2. Hazardous-voltage indicator Display release button Display Backlight button: turns the Backlight on for 2 seconds to exit min max mode. Hold L for 2 minutes ...
381 Users Manual Item A B C D E F G H I Table 2. Hazardous-voltage indicator Display release button Display Backlight button: turns the Backlight on for 2 seconds to exit min max mode. Hold L for 2 minutes ...
Fluke 381 Users Manual
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Push Z to shift to frequency. 16 DC current AC current and frequency measurement using the Flexible Current Probe. Push Z to shift to frequency. Rotary Function Switch Meter is powered down AC voltage DC voltage Function Resistance and continuity AC current. 381 Users Manual Switch Position OFF K L K A C D Table 3.
Push Z to shift to frequency. 16 DC current AC current and frequency measurement using the Flexible Current Probe. Push Z to shift to frequency. Rotary Function Switch Meter is powered down AC voltage DC voltage Function Resistance and continuity AC current. 381 Users Manual Switch Position OFF K L K A C D Table 3.
Fluke 381 Users Manual
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Display Description Item Inrush is active H Hold is active I C Volts J D Amps K E Ohms, DC, AC, Hz L F Main display M G Remote display low-battery symbol N O Description Meter base low-battery symbol Measurement is being shown. RF signal is taken at the Flexible Current Probe. Measurement is active. 18 Min Max mode is taken at the Jaw. Min, Max, or Avg reading is present. 381 Users Manual Item A B Table 4. Continuity Hazardous voltage is being sent to remote display.
Display Description Item Inrush is active H Hold is active I C Volts J D Amps K E Ohms, DC, AC, Hz L F Main display M G Remote display low-battery symbol N O Description Meter base low-battery symbol Measurement is being shown. RF signal is taken at the Flexible Current Probe. Measurement is active. 18 Min Max mode is taken at the Jaw. Min, Max, or Avg reading is present. 381 Users Manual Item A B Table 4. Continuity Hazardous voltage is being sent to remote display.
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.... See Figure 4. Note Current flowing in opposite directions cancels each other. If current is no conductor inside the Jaw. View the reading on the display. 381 Users Manual Note Before zeroing the Meter, make sure the Jaws are closed and there is moving in opposite directions, place one conductor into the Jaw. 4. Turn...
.... See Figure 4. Note Current flowing in opposite directions cancels each other. If current is no conductor inside the Jaw. View the reading on the display. 381 Users Manual Note Before zeroing the Meter, make sure the Jaws are closed and there is moving in opposite directions, place one conductor into the Jaw. 4. Turn...
Fluke 381 Users Manual
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..., follow these instructions: 1. Turn the Rotary Function Switch to make the connection, make sure that the readings are coming from the Flexible Current Probe. 22 381 Users Manual AC Current (Flexible Current Probe) XW Warning To prevent possible electrical shock or personal injury: Do not apply the Flexible Current Probe around the conductor...
..., follow these instructions: 1. Turn the Rotary Function Switch to make the connection, make sure that the readings are coming from the Flexible Current Probe. 22 381 Users Manual AC Current (Flexible Current Probe) XW Warning To prevent possible electrical shock or personal injury: Do not apply the Flexible Current Probe around the conductor...
Fluke 381 Users Manual
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Flexible Current Probe Connection ghn09.eps 24 381 Users Manual 2 1 Figure 5.
Flexible Current Probe Connection ghn09.eps 24 381 Users Manual 2 1 Figure 5.
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.... Turn on the Meter display. Turn the Rotary Function Switch to the G terminal. 4. Center the Jaw or Flexible Current Probe around the device's live wire. 3. 381 Users Manual Resistance/Continuity To measure resistance or continuity: 1. Measure the resistance by a beeper continuously sounding. To measure the inrush current: 1. Push E on the display. Remove power...
.... Turn on the Meter display. Turn the Rotary Function Switch to the G terminal. 4. Center the Jaw or Flexible Current Probe around the device's live wire. 3. 381 Users Manual Resistance/Continuity To measure resistance or continuity: 1. Measure the resistance by a beeper continuously sounding. To measure the inrush current: 1. Push E on the display. Remove power...
Fluke 381 Users Manual
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Do not immerse the Meter in this manual should be performed only by qualified personnel. Turn the Meter Rotary Function Switch to Hz. The frequency is being used in the Meter. Cleaning the ... Current Probe XW Warning To avoid electrical shock, remove any input signals before cleaning. These solutions will react with a damp cloth and mild detergent. 28 381 Users Manual Frequency Measurement (Jaw and Flexible Current Probe) To measure frequency: 1. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for...
Do not immerse the Meter in this manual should be performed only by qualified personnel. Turn the Meter Rotary Function Switch to Hz. The frequency is being used in the Meter. Cleaning the ... Current Probe XW Warning To avoid electrical shock, remove any input signals before cleaning. These solutions will react with a damp cloth and mild detergent. 28 381 Users Manual Frequency Measurement (Jaw and Flexible Current Probe) To measure frequency: 1. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for...
Fluke 381 Users Manual
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Meter Base 1 3766406 Fluke 381 Remote Display 1 3766445 Soft Case 1 3752973 User Manual 1 3538357 31 Remote Display True-rms Clamp Meter User-Replaceable Parts User-Replaceable Parts Table 5. Fluke Part Number Battery, AAA 1.5 V 5 2838018 Battery Door - Display Module 1 3625529 Battery Door - User-Replaceable Parts Description Qty.
Meter Base 1 3766406 Fluke 381 Remote Display 1 3766445 Soft Case 1 3752973 User Manual 1 3538357 31 Remote Display True-rms Clamp Meter User-Replaceable Parts User-Replaceable Parts Table 5. Fluke Part Number Battery, AAA 1.5 V 5 2838018 Battery Door - Display Module 1 3625529 Battery Door - User-Replaceable Parts Description Qty.
Fluke 381 Users Manual
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381 Users Manual Specifications 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 32
381 Users Manual Specifications 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 32
Fluke 381 Users Manual
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Position Sensitivity ghn12.eps 34 381 Users Manual Position Sensitivity A B C Figure 9.
Position Sensitivity ghn12.eps 34 381 Users Manual Position Sensitivity A B C Figure 9.