Extech Instruments 380947 User's Manual
Contents
1. digits Overload Protect 1 0 2d 400A DC 400A 0 to 150A 1 0 2d 400A DC 400A 150 to 200A 2 2 2d 400A DC 400A 200 to 400A AC Current 4A 500mA to 4A 1 594430 2 0 144d 400A AC 15940430 2 0 4d 400A AC 100A 0 to 100A 400A 100 to 200A 250Hz to 10kHz O1to1Hz 500A AC 3 380947 V3 0V 10 06 Meter Description 1 O Teu DIN Conductor under test Clamp Jaws Jaw trigger Opens the meter jaws ZERO Relative button Zeroes the DCA reading Function select switch HOLD button to freeze displayed reading MAX MIN button Press to track and view highest and lowest readings LCD Display with function indicators units of measure and bargraph True RMS AC DC Mini Clamp Meter TE ZEROA HOLD MAX MIN gt AD lt ca ae CILI IL VA AUTO MAN ami ani ani eet Tn UEC mp 10 20 30 at Non Contact Frequency Measurement a 4 380947 V3 0V 10 06 Display icons DC AC AUTO MAN ZERO HOLD MAX MIN A M k Hz Low battery Direct current Alternating current Minus sign Automatic range frequency only Manual range Zero function HOLD function Highest reading Lowest reading Current unit of measure Prefix MEGA millions of units Prefix KILO thousands of units Hertz unit of measure for frequency Bargraph displa The 40 s2. User s Guide EXTECH mm NSTRUMENTS True RMS AC DC Mini Clamp Meter Model 380947 ZERO True RMS AC DC Mini Clamp Meter BS ZEROA HOLD MAX MIN D AC MAX MIN Measurement gt Non Contact Freguency Si W HOLD D 2 EXTECH 380947 Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies on sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website at www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set f
3. e measured Do not allow a gap between the two halves of the jaw 5 Read the DCA value on the LCD Frequency Measurements 1 Ensure that at least 0 1A AC is detectable before measuring Frequency 2 Set the Function switch to the Hz position 3 Press the Trigger to open the jaw and fully enclose one conductor 4 Read the Frequency measurement on the LCD in Hz MIN MAX Function Press the MIN MAX key to display ONLY the highest MAX and the lowest MIN readings Press the MIN MAX key once to view the minimum reading press it again to view the maximum reading Note that the displayed readings will only change when a measurement is taken higher than the previous MAX or lower than the previous MIN readings The HOLD display icon along with the MIN or MAX icon will appear on the LCD in MIN MAX mode Pressing the MIN MAX key a 3 time returns the meter to normal operation Data Hold To freeze the displayed reading on the LCD press the Data Hold key the HOLD icon will appear on the display To release the Data Hold function and return the meter to normal operation press the Data Hold key again the HOLD icon will switch off Zero button for Relative Measurements 1 Press the ZERO key and the present measurement will zero 2 All subsequent measurements are displayed with respect to the zeroed reading For example if a 20A reading is zeroed and a 30A reading is subsequently measured the LCD will display 10A 3 To return to no
4. egment bargraph display shown below is a graphical interpretation of the measurement It is displayed under the display digits on the LCD The bars in the bargraph indicate a presence of an electronic signal The more bars showing the higher the signal The digits below the graph help the user see how many bars are showing If 40 segments are showing the bars will reach the 40 mark if 20 bars are showing the bars will reach the 20 mark The bargraph is to be interpreted based on the range the meter is in while the measurement is being made If the bargraph shows 40 segments lit then the signal is at the highest end of the meter s present range 0 0 0 V 4 5 380947 V3 0V 10 06 Operation AC Current Measurements WARNING To avoid electric shock disconnect the test leads from the meter before making current measurements Set the Function switch to the 4 40 100 or 400A AC range 2 Press the Trigger to open the clamp jaw 3 Clamp onto a single conductor fully enclosing it Do not allow a gap between the two halves of the jaw 4 Read the ACA value on the LCD DC Current Measurements WARNING To avoid electric shock disconnect the test leads from the meter before making current measurements Set the Function switch to the 40 or 400A DC range Press the DCA zero key to null the meter display Press the Trigger to open the current sense Jaw Or N SS Fully enclose a single conductor to b
5. orth above is inclusive and no other warranty whether written or oral is expressed or implied Introduction Congratulations on your purchase of the Extech 380947 True RMS Clamp Meter This Clamp meter measures current up to 400A DC AC and measures Frequency up to 100 kHz Careful use of this meter will provide years of reliable service Safet NEVER exceed the specified voltage current maximum 2 USE EXTREME CAUTION when working with high voltages 3 NEVER operate the meter unless the back cover and the battery fuse door are in place and fastened securely International Safety Symbols DC Voltage DC Current Refer to explanation in owners manual AC Voltage Dangerous voltage risk AC Current of electrical shock 2 380947 V3 0V 10 06 Specifications General Specifications Display 3 3 4 Digit LCD with 40 segment bargraph Functions Current ACA DCA and Frequency Hz i amm NI e vi e il Hall effect Display indicates 1 o or f One touch zero key also used as a Relative function 2 readings second 20 readings second for bargraph Two 1 5V AA batteries Operating temperature 4 F to 122 F 10 C to 50 C Operating Humidity lt 85 RH Power consumption 10mA DC approx 6 2 oz 190g including battery Dimensions 7 2 x 2 5 x 1 4 183 x 63 6 x 35 6mm H x W x D Jaw opening 0 9 23mm IEC 1010 Category III 300V Category II 600V DC Current Resolution Accuracy of rdg
6. rmal operation press and hold the ZERO key for 2 seconds 4 Note that Relative mode is not available if the MIN MAX mode is enabled 6 380947 V3 0V 10 06 Battery Replacement 1 When the low battery symbol appears on the LCD the batteries must be replaced 2 Turn the meter off and remove the rear battery compartment screw 3 Lift off the battery compartment cover and replace the two 1 5V AA cells 4 Replace the compartment cover and secure the screw Cleaning Use only a dry cloth to clean the plastic case Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter performance and accuracy Ta a Support Hotline 781 890 7440 Tech support Ext 200 Email support extech com Repair Returns Ext 210 Email repair extech com Website www extech com Copyright 2006 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 7 380947 V3 0V 10 06
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