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380947   V3.0V    10/06

 

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 forth 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. 
  

Safety 

1. 

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 

 

www.burntec.com

Summary of Contents for 380947

Page 1: ...User s Guide True RMS AC DC Mini Clamp Meter Model 380947 www burntec com ...

Page 2: ...ng 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 forth above is inclu...

Page 3: ...x 2 5 x 1 4 183 x 63 6 x 35 6mm H x W x D Jaw opening 0 9 23mm Standards IEC 1010 Category III 300V Category II 600V Range Specifications DC Current Resolution Accuracy of rdg digits Overload Protect 40A 10mA 1 0 2d 400A DC 400A 0 to 150A 100mA 1 0 2d 400A DC 400A 150 to 200A 100mA 2 2 2d 400A DC 400A 200 to 400A 100mA 4 0 2d 400A DC AC Current Resolution 50 60Hz 40Hz 1kHz Overload Protect 4A 0 to...

Page 4: ...r Opens the meter jaws 4 ZERO Relative button Zeroes the DCA reading 5 Function select switch 6 HOLD button to freeze displayed reading 7 MAX MIN button Press to track and view highest and lowest readings 8 LCD Display with function indicators units of measure and bargraph www burntec com ...

Page 5: ...s 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 Th...

Page 6: ...uency 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...

Page 7: ...lace 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 c...

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