Fluke 381 Users Manual
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All product names are subject to change without notice. 381 Remote Display True-rms Clamp Meter Users Manual PN 3538357 July 2010 © 2010 Fluke Corporation. Printed in China. Specifications are trademarks of their respective companies. All rights reserved.
All product names are subject to change without notice. 381 Remote Display True-rms Clamp Meter Users Manual PN 3538357 July 2010 © 2010 Fluke Corporation. Printed in China. Specifications are trademarks of their respective companies. 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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...test leads from the Meter before you use the Meter. Look for cracks or missing plastic. 381 Users Manual • Singapore: +65-738-5655 • Anywhere in the world: +1-425-446-5500 Or, visit Fluke's website at the insulation around the connectors. • Never measure ac current while the test... leads are explained in Table 1. To see, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals. Symbols used on the Meter and in this manual or the protection provided by the Meter can be compromised. • Examine the case before the...
...test leads from the Meter before you use the Meter. Look for cracks or missing plastic. 381 Users Manual • Singapore: +65-738-5655 • Anywhere in the world: +1-425-446-5500 Or, visit Fluke's website at the insulation around the connectors. • Never measure ac current while the test... leads are explained in Table 1. To see, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals. Symbols used on the Meter and in this manual or the protection provided by the Meter can be compromised. • Examine the case before the...
Fluke 381 Users Manual
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... in circuits carrying more than 1000 V or 2500 A with the conductor could result in electric shock. • Adhere to local and national safety codes. 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...
... in circuits carrying more than 1000 V or 2500 A with the conductor could result in electric shock. • Adhere to local and national safety codes. 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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Important information. B Battery. W Risk of this product as unsorted municipal waste. Go to relevant North American Safety Standards. Low battery when shown. See Manual. ) Conforms to Fluke's website for recycling information. 5 T Double insulated ~ Do not dispose of Danger. 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. X Hazardous voltage P Conforms to European Union directives.
Important information. B Battery. W Risk of this product as unsorted municipal waste. Go to relevant North American Safety Standards. Low battery when shown. See Manual. ) Conforms to Fluke's website for recycling information. 5 T Double insulated ~ Do not dispose of Danger. 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. X Hazardous voltage P Conforms to European Union directives.
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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... Table 2. Different display modules can be synchronized to correct the interference by one or more of the Meter is not available through the display module. 381 Users Manual off and on, the user is encouraged to try to a Meter base at the same time. 8 To make sure that follow: • Reorient or...
... Table 2. Different display modules can be synchronized to correct the interference by one or more of the Meter is not available through the display module. 381 Users Manual off and on, the user is encouraged to try to a Meter base at the same time. 8 To make sure that follow: • Reorient or...
Fluke 381 Users Manual
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... flexible and lightweight measuring head allows quick and easy installation in hard-to tell you a hazardous voltage is disabled during Min Max Avg function use. 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...
... flexible and lightweight measuring head allows quick and easy installation in hard-to tell you a hazardous voltage is disabled during Min Max Avg function use. 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...
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 Battery ...
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 Battery ...
Fluke 381 Users Manual
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... on and off . Min Max button: when first pushed, the Meter shows maximum input. With subsequent pushes, the minimum and the average inputs are shown. 381 Users Manual Item A B C D E F G H I Table 2.
... on and off . Min Max button: when first pushed, the Meter shows maximum input. With subsequent pushes, the minimum and the average inputs are shown. 381 Users Manual Item A B C D E F G H I Table 2.
Fluke 381 Users Manual
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381 Users Manual Switch Position OFF K L K A C D Table 3. Rotary Function Switch Meter is powered down AC voltage DC voltage Function Resistance and continuity AC current. DC current AC current and frequency measurement using the Flexible Current Probe. Push Z to shift to frequency. Push Z to shift to frequency. 16
381 Users Manual Switch Position OFF K L K A C D Table 3. Rotary Function Switch Meter is powered down AC voltage DC voltage Function Resistance and continuity AC current. DC current AC current and frequency measurement using the Flexible Current Probe. Push Z to shift to frequency. Push Z to shift to frequency. 16
Fluke 381 Users Manual
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381 Users Manual Item A B Table 4. Measurement is being shown. Min Max mode is present. Continuity Hazardous voltage is active. 18 RF signal is taken at the Jaw. 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 sent to remote display. Min, Max, or Avg reading is taken at the Flexible Current Probe.
381 Users Manual Item A B Table 4. Measurement is being shown. Min Max mode is present. Continuity Hazardous voltage is active. 18 RF signal is taken at the Jaw. 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 sent to remote display. Min, Max, or Avg reading is taken at the Flexible Current Probe.
Fluke 381 Users Manual
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... the conductor using the alignment marks. 5. See Figure 4. If measuring dc, wait for the display to stabilize and then push Z to the proper function. 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. With...
... the conductor using the alignment marks. 5. See Figure 4. If measuring dc, wait for the display to stabilize and then push Z to the proper function. 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. With...
Fluke 381 Users Manual
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... that you close to hear and feel the Flexible Current Probe lock snap into place. To use the Flexible Current Probe, follow these instructions: 1. 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...
... that you close to hear and feel the Flexible Current Probe lock snap into place. To use the Flexible Current Probe, follow these instructions: 1. 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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381 Users Manual 2 1 Figure 5. Flexible Current Probe Connection ghn09.eps 24
381 Users Manual 2 1 Figure 5. Flexible Current Probe Connection ghn09.eps 24
Fluke 381 Users Manual
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... the resistance is < 30 Ω, continuity is being tested. 3. Center the Jaw or Flexible Current Probe around the device's live wire. 3. See Figure 7. 26 381 Users Manual Resistance/Continuity To measure resistance or continuity: 1. View the reading on the device under test off, turn the Meter Rotary Function Switch to A, C, or D if...
... the resistance is < 30 Ω, continuity is being tested. 3. Center the Jaw or Flexible Current Probe around the device's live wire. 3. See Figure 7. 26 381 Users Manual Resistance/Continuity To measure resistance or continuity: 1. View the reading on the device under test off, turn the Meter Rotary Function Switch to A, C, or D if...
Fluke 381 Users Manual
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Turn the Meter Rotary Function Switch to Hz. The frequency is being used in this manual should be performed only by qualified personnel. Center the Jaw or Flexible Current Probe around the measurement source. 3. Maintenance XW Warning To..., remove any input signals before cleaning. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for the measurement. 2. 381 Users Manual Frequency Measurement (Jaw and Flexible Current Probe) To measure frequency: 1. These solutions will react with a damp cloth and mild detergent. 28 Push Z ...
Turn the Meter Rotary Function Switch to Hz. The frequency is being used in this manual should be performed only by qualified personnel. Center the Jaw or Flexible Current Probe around the measurement source. 3. Maintenance XW Warning To..., remove any input signals before cleaning. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for the measurement. 2. 381 Users Manual Frequency Measurement (Jaw and Flexible Current Probe) To measure frequency: 1. These solutions will react with a damp cloth and mild detergent. 28 Push Z ...
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 Fluke Part Number Battery, AAA 1.5 V 5 2838018 Battery Door - Display Module 1 3625529 Battery Door - User-Replaceable Parts Description Qty. Remote Display True-rms Clamp Meter User-Replaceable Parts User-Replaceable Parts Table 5.
Meter Base 1 3766406 Fluke 381 Remote Display 1 3766445 Soft Case 1 3752973 User Manual 1 3538357 31 Fluke Part Number Battery, AAA 1.5 V 5 2838018 Battery Door - Display Module 1 3625529 Battery Door - User-Replaceable Parts Description Qty. Remote Display True-rms Clamp Meter User-Replaceable Parts User-Replaceable Parts Table 5.
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