Fluke 381 Clamp Meter Product Datasheet
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... do jobs that used to operate controls or remove protective equipment, all while watching real-time readings. 381 Remote Display True-rms AC/DC Clamp Meter with iFlex™ The first clamp meter with measurement accuracy • iFlex™ flexible current probe expands the measurement range to 2500 A ac while providing increased display flexibility, ability to measure awkward sized conductors and improved...
... do jobs that used to operate controls or remove protective equipment, all while watching real-time readings. 381 Remote Display True-rms AC/DC Clamp Meter with iFlex™ The first clamp meter with measurement accuracy • iFlex™ flexible current probe expands the measurement range to 2500 A ac while providing increased display flexibility, ability to measure awkward sized conductors and improved...
Fluke 381 Clamp Meter Product Datasheet
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... display can be conveniently mounted where it is easily seen • Radio transmitter automatically turns off when the display is connected to the meter • Large, easy to read, backlight display automatically sets the correct measurement range so 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...
... display can be conveniently mounted where it is easily seen • Radio transmitter automatically turns off when the display is connected to the meter • Large, easy to read, backlight display automatically sets the correct measurement range so 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...
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. All rights reserved. Printed in China. Specifications are trademarks of their respective companies.
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. All rights reserved. Printed in China. Specifications are trademarks of their respective companies.
Fluke 381 Users Manual
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..., or abnormal conditions of operation or handling. Fluke Europe B.V. Resellers are not authorized to you. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. THIS WARRANTY IS YOUR ONLY REMEDY. To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return authorization information, then send the...
..., or abnormal conditions of operation or handling. Fluke Europe B.V. Resellers are not authorized to you. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. THIS WARRANTY IS YOUR ONLY REMEDY. To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return authorization information, then send the...
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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... very tight spaces. The Fluke 381 is a handheld, battery-operated Clamp Meter (the Meter) that traditional jawed meters cannot measure. The Flexible Current Probe makes it possible to measure higher current (up to Contact Fluke To contact Fluke, call one of the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800-443-5853) • Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853...
... very tight spaces. The Fluke 381 is a handheld, battery-operated Clamp Meter (the Meter) that traditional jawed meters cannot measure. The Flexible Current Probe makes it possible to measure higher current (up to Contact Fluke To contact Fluke, call one of the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800-443-5853) • Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853...
Fluke 381 Users Manual
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... Meter before you use the Meter. Safety Information A Warning identifies conditions and actions that could cause Meter damage, equipment under test damage, or permanent loss of data. Symbols used on the Meter and in this manual are inserted into the input jacks. • Make sure the battery door is opened. 2 To see, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals...
... Meter before you use the Meter. Safety Information A Warning identifies conditions and actions that could cause Meter damage, equipment under test damage, or permanent loss of data. Symbols used on the Meter and in this manual are inserted into the input jacks. • Make sure the battery door is opened. 2 To see, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals...
Fluke 381 Users Manual
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... 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. See Table 5. • Have the Meter serviced only by qualified service personnel. • Be careful around explosive gas, vapor or in damp or wet environments. • Use only type AAA batteries, properly installed in the Meter case, to power...
... 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. See Table 5. • Have the Meter serviced only by qualified service personnel. • Be careful around explosive gas, vapor or in damp or wet environments. • Use only type AAA batteries, properly installed in the Meter case, to power...
Fluke 381 Users Manual
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...used to local and national safety codes. See Figure 2. • Disconnect circuit power and discharge all high-voltage capacitors before you do diode tests or measure resistance, continuity, or capacitance. • Do not measure ac/dc current in circuits carrying more than 1000 V or 1000 A with the Meter Jaw. • Never operate the Meter... Tactile Barrier. De- 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 ...
...used to local and national safety codes. See Figure 2. • Disconnect circuit power and discharge all high-voltage capacitors before you do diode tests or measure resistance, continuity, or capacitance. • Do not measure ac/dc current in circuits carrying more than 1000 V or 1000 A with the Meter Jaw. • Never operate the Meter... Tactile Barrier. De- 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 ...
Fluke 381 Users Manual
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...Application around and removal from the primary supply level, such as distribution panels, feeders and short branch circuits, and lighting systems in fixed-equipment installations, such as an electricity Meter or an overhead or underground utility service. ® Examined and licensed by TÜV Product Services. ; 381 Users Manual Symbol Meaning Symbol Meaning CAT III IEC... relevant Australian standards. - Note The Measurement Category (CAT) and voltage rating of any combination of test probe, test probe accessory, current clamp accessory, and the Meter is permitted.
...Application around and removal from the primary supply level, such as distribution panels, feeders and short branch circuits, and lighting systems in fixed-equipment installations, such as an electricity Meter or an overhead or underground utility service. ® Examined and licensed by TÜV Product Services. ; 381 Users Manual Symbol Meaning Symbol Meaning CAT III IEC... relevant Australian standards. - Note The Measurement Category (CAT) and voltage rating of any combination of test probe, test probe accessory, current clamp accessory, and the Meter is permitted.
Fluke 381 Users Manual
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... industrial environments. Class B digital device: A digital device that can be determined by turning the equipment 7 However, there is marketed for operation by the general public. This device complies with the instructions, 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 , personal...
... industrial environments. Class B digital device: A digital device that can be determined by turning the equipment 7 However, there is marketed for operation by the general public. This device complies with the instructions, 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 , personal...
Fluke 381 Users Manual
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... wireless radio signal does not hinder Meter measurements. Usually, the radio signal is docked to let the display module operate in detail. Remote Display The Meter uses low-power 802.15.4 wireless technology to the Meter base. Although there is control of some Meter functions (Hold, MIN MAX AVG, and Backlight), complete remote control of the measures that the radio signal is off when the display module is off , remove the batteries from the Meter...
... wireless radio signal does not hinder Meter measurements. Usually, the radio signal is docked to let the display module operate in detail. Remote Display The Meter uses low-power 802.15.4 wireless technology to the Meter base. Although there is control of some Meter functions (Hold, MIN MAX AVG, and Backlight), complete remote control of the measures that the radio signal is off when the display module is off , remove the batteries from the Meter...
Fluke 381 Users Manual
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If the Meter powers off if there is at the Meter input. Auto Power Off is used for accurate, non-intrusive measurement of sinusoidal, pulsed, and other complex waveforms. The flexible and lightweight measuring head allows quick and easy installation in hard-to tell you a hazardous voltage is no button push or Rotary Function Switch operation for 20 minutes. Auto Power Off The Meter powers off , turn the...
If the Meter powers off if there is at the Meter input. Auto Power Off is used for accurate, non-intrusive measurement of sinusoidal, pulsed, and other complex waveforms. The flexible and lightweight measuring head allows quick and easy installation in hard-to tell you a hazardous voltage is no button push or Rotary Function Switch operation for 20 minutes. Auto Power Off The Meter powers off , turn the...
Fluke 381 Users Manual
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... Auto Power Off feature is disabled. DC Current Zero Push to remove any dc offset that could affect the accuracy of a given output signal over an extended time. To exit Min Max Avg mode, push and hold down while turning on and off after 2 minutes. Push to enter Min Max Avg mode, push again to display...
... Auto Power Off feature is disabled. DC Current Zero Push to remove any dc offset that could affect the accuracy of a given output signal over an extended time. To exit Min Max Avg mode, push and hold down while turning on and off after 2 minutes. Push to enter Min Max Avg mode, push again to display...
Fluke 381 Users Manual
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... be changed . When B appears, the batteries in the display. 12 Measurements are one example of such an event. Low Battery Indicators The Meter uses two low battery symbols: Band Q. Low batteries on . The Inrush function takes approximately 400 samples over a 100 ms period and calculates the starting current envelope. When Q is first powered on the Meter base will affect the readings. 381 Users Manual Inrush...
... be changed . When B appears, the batteries in the display. 12 Measurements are one example of such an event. Low Battery Indicators The Meter uses two low battery symbols: Band Q. Low batteries on . The Inrush function takes approximately 400 samples over a 100 ms period and calculates the starting current envelope. When Q is first powered on the Meter base will affect the readings. 381 Users Manual Inrush...
Fluke 381 Users Manual
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... mode. Hold L for 2 minutes when there is no button or switch interaction and then shuts off . This function works in current, voltage, and frequency modes. 14 Min Max button: when first pushed, the Meter shows maximum input. Hold button: freezes the display reading and releases the reading when pushed a second time. Meter Features Description Current sensing Jaw Tactile Barrier Rotary Function Switch, see Table 3. 381 Users Manual...
... mode. Hold L for 2 minutes when there is no button or switch interaction and then shuts off . This function works in current, voltage, and frequency modes. 14 Min Max button: when first pushed, the Meter shows maximum input. Hold button: freezes the display reading and releases the reading when pushed a second time. Meter Features Description Current sensing Jaw Tactile Barrier Rotary Function Switch, see Table 3. 381 Users Manual...
Fluke 381 Users Manual
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... the Rotary Function Switch is in the correct position, Y shows on the display, meaning that you close to the Meter. See Figure 5. 2. Keep the probe coupling more than 2.5 cm (1 inch) away from HAZARDOUS LIVE conductors. D 4. Turn the Rotary Function Switch to . Take ...from the conductor. Connect the flexible part of the Flexible Current Probe. See the detail in the Flexible Current Probe. De-energize the installation under test or wear suitable protective clothing. To use the Flexible Current Probe, follow these instructions: 1. 381 Users Manual AC Current (Flexible...
... the Rotary Function Switch is in the correct position, Y shows on the display, meaning that you close to the Meter. See Figure 5. 2. Keep the probe coupling more than 2.5 cm (1 inch) away from HAZARDOUS LIVE conductors. D 4. Turn the Rotary Function Switch to . Take ...from the conductor. Connect the flexible part of the Flexible Current Probe. See the detail in the Flexible Current Probe. De-energize the installation under test or wear suitable protective clothing. To use the Flexible Current Probe, follow these instructions: 1. 381 Users Manual AC Current (Flexible...
Fluke 381 Users Manual
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... test off, turn the Meter Rotary Function Switch to the desired test points of the circuit. 5. Center the Jaw or Flexible Current Probe around the device's live wire. 3. Turn on the Meter display. The inrush current (spike) is open. Remove power from the circuit being used for the measurement. 2. See Figure 7. 26 To measure the inrush current: 1. 381 Users Manual Resistance/Continuity...
... test off, turn the Meter Rotary Function Switch to the desired test points of the circuit. 5. Center the Jaw or Flexible Current Probe around the device's live wire. 3. Turn on the Meter display. The inrush current (spike) is open. Remove power from the circuit being used for the measurement. 2. See Figure 7. 26 To measure the inrush current: 1. 381 Users Manual Resistance/Continuity...
Fluke 381 Users Manual
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... cleaning. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for the measurement. 2. These solutions will react with a damp cloth and mild detergent. 28 Center the Jaw or Flexible Current Probe around the measurement source. 3. Turn the Meter Rotary Function Switch to Hz. 381 Users Manual Frequency Measurement (Jaw and Flexible Current Probe) To...
... cleaning. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for the measurement. 2. These solutions will react with a damp cloth and mild detergent. 28 Center the Jaw or Flexible Current Probe around the measurement source. 3. Turn the Meter Rotary Function Switch to Hz. 381 Users Manual Frequency Measurement (Jaw and Flexible Current Probe) To...
Fluke 381 Users Manual
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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 - User-Replaceable Parts Description Qty. Display Module 1 3625529 Battery Door - 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 - User-Replaceable Parts Description Qty. Display Module 1 3625529 Battery Door - Meter Base 1 3766406 Fluke 381 Remote Display 1 3766445 Soft Case 1 3752973 User Manual 1 3538357 31
