380942 - Multimeter Extech - Free user manual and instructions

USER MANUAL 380942 Extech

Congratulations on your purchase of the Extech Model 380942 DC/AC Clamp Meter. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

Meter Description

1. Current sense jaw
2. Measurement Trigger
3. Function switch
4. Data HOLD key
5. MAX / MIN key
6. One-touch DCA ZERO key
7. LCD Display
8. Positive input terminal for Voltage
9. COM terminal

M terminal 1 2 3 4 5 6 7 8 9 EXTECH® 380942 True RMS AC/DC Mini Clamp Meter ZERO MAX/MIN HOLD OK OFF 30A 400mA 400mA 400V 400V 0.00 mVA MkΩHz 0 10 20 30 40 COM CUT 11-30V CUT 14-40V

Safety Symbols and Information

Caution! Risk of danger. Refer to accompanying documents.

Caution! Risk of electric shock

Earth (Ground)

This meter has been designed to be safe in use, but the operator must use caution in its operation. The rules listed below should be carefully followed for safe operation.

1. NEVER apply voltage or current to the meter that exceeds the specified maximum:
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack exceeds 600V above earth ground.
4. ALWAYS turn off the power and disconnect the test leads before opening the back to replace the fuse or batteries.
5. NEVER operate the meter unless the back cover and the battery/fuse door are in place and fastened securely.

AC Current Measurements (True RMS)

WARNING: To avoid electric shock, disconnect the test leads from the meter before making current measurements.

1) Set the Function switch to the 400mA, 4000mA, or 30A AC range.
2) Press the jaw trigger and clamp around, fully enclosing a single conductor. Do not allow a gap between the two halves of the jaw. Refer to the diagram at right for the correct way to enclose a single conductor.
3) Read the AC Current value on the LCD's digital or bargraph display.

DC Current Measurements

WARNING: To avoid electric shock, disconnect the test leads from the meter before making current measurements.

1) Set the Function switch to the mA or 40A DC range.
2) Press the DCA zero key to null the meter display.
3) Press the Trigger to open the current sense Jaw.
4) Fully enclose the conductor to be measured. Do not allow a gap between the two halves of the jaw.
5) Read the DC Current value on the LCD's digital or bargraph display.

AC Voltage Measurements (True RMS)

WARNING: To avoid electric shock or damage to the meter, do not make any voltage measurements that exceed the maximum specified limits.

1) Set the Function switch to the 400V AC position.
2) Insert the test leads to the meter as follows: Red lead to "V" terminal; Black lead to the COM input.
3) Connect the test leads to the circuit or device under test.
4) Read the AC Voltage value on the LCD's digital or bargraph display.

DC Voltage Measurements

WARNING: To avoid electric shock or damage to the meter, do not make any voltage measurements that exceed the maximum specified limits.

1) Set the Function switch to the 400V DC position.
2) Insert the test leads to the meter as follows: Red lead to "V" terminal; Black lead to the COM input.
3) Connect the test leads to the circuit or device under test.
4) Read the DC Voltage value on the LCD's digital or bargraph display.

Relative Measurements

1) Press the ZERO key. The displayed reading will zero and the word ZERO will appear on the upper portion of the LCD.
2) All subsequent measurements will now be 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) Press the zero button once more to return to normal operating mode.
4) Note that Relative mode is not available if MIN/MAX mode is enabled.
5) LCD displays relative numerical value without bargraph.

Data Hold

To freeze the current reading on the LCD, press the Data Hold key. The word HOLD will appear on the LCD while the meter is in the Data Hold mode. To release the Data Hold function and return the meter to normal operation, press the Data Hold key again. The word HOLD will switch off.

MIN/MAX Readings

Pressing the MIN/MAX key allows the meter to display ONLY the highest and the lowest readings encountered. Press the MIN/MAX key once to view the minimum reading, press it again to view the maximum reading. The LCD will toggle between the MIN and MAX values. Press and hold MIN/MAX button for more than 2 seconds to return to normal operating mode. Zero function will be disabled when MIN/MAX is enabled.

Auto Power Off

To extend battery life, the meter will auto power off after 15 minutes of operation (APO will be displayed on LCD). To resume operation, either turn the meter OFF for 3 seconds and then ON again, or press the HOLD button. Pressing any button or turning the rotary switch will reset the 15 minute timer. To disable the auto power off function, press down the "HOLD" key while turning the meter on.

Maintenance

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 Phillips screw.
3) Lift off the battery compartment cover and replace the two 1.5V AA batteries.
4) Replace the compartment cover and secure the screw.

Cleaning

Caution: Use only a dry cloth to clean the plastic case.

General Specifications

Display 3-3/4 digit (4032 count) LCD with 40 segment bargraph

Functions ACA, DCA, ACV, DCV

Polarity Minus sign (-) indicates negative polarity

Current sensor Hall effect sensor type

Overload indication OL

DCA zero adjust One touch zero key

Display rate 3 readings/second (30 readings/second for bargraph)

Battery Two 1.5V AA batteries

Operating conditions 4 ^ F to 122 ^ F (-10 ^ C to 50 ^ C); < 85% Relative Humidity

Storage conditions - 4 °F to 140°F (-20°C to 60°C); < 75% Relative Humidity

Altitude Operate at less than 2000 meters (for indoor use only)

Power consumption Approximately 15mA DC

Weight 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)

Standards IEC 1010 Category III 300V, Category II 600V

Range Specifications (23°C±5°C)

Function	Range	Resolution	Accuracy (of reading)		Overload protect
DC Current	4000mA	1mA	±(2.0% + 3d)		40A DC
	30A	10mA			100A DC
	40A	10mA	±(2.5% + 3d)		100A DC
AC Current(True RMS)			50/60Hz	40 to 100Hz
	400mA	0.1mA	±(1.5% + 5d)	±(2.0% + 5d)	40A AC
			50/60Hz	40 to 1kHz
	4000mA	1mA	±(2.5% + 5d)	±(3.0% + 5d)	40A AC
	30A	10mA	±(2.0% + 5d)	±(2.5% + 5d)	100A AC
DC Voltage	400V	0.1V	±(1.0% + 2d)		1000V DC
AC Voltage(True RMS)			50/60Hz	40 to 1kHz
	400V	0.1V	±(1.5% + 4d)	±(2.0% + 5d)	800V AC

Specification Notes

• AC Voltage and Current Crest Factor: < 3
• AC / DC Voltage Input Impedance: 10MΩ

Warranty

FLIR Systems, Inc. warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to 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 for authorization. Visit the website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is returned. 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. FLIR Systems, Inc. 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. FLIR'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.

Calibration, Repair, and Customer Care Services

FLIR Systems, Inc. offers repair and calibration services for the Extech Instruments products we sell. NIST certification for most products is also provided. Call the Customer Service Department for information on calibration services available for this product. Annual calibrations should be performed to verify meter performance and accuracy. Technical support and general customer service is also provided, refer to the contact information provided below.

Support Lines: U.S. [phone]; International: [phone]

Technical Support: Option 3; E-mail: [e-mail]

Repair & Returns: Option 4; E-mail: [e-mail]

Product specifications are subject to change without notice

Please visit our website for the most up-to-date information

www.extech.com

FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA

ISO 9001 Certified

Copyright © 2014 FLIR Systems, Inc.

All rights reserved including the right of reproduction in whole or in part in any form

www.extech.com

Garantie

Copyright © 2014 FLIR Systems, Inc.

Copyright © 2014 FLIR Systems, Inc.