Manual - Prime Ltd
Contents
1. 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 Yes 3 Read the AC Current value on the LCD s digital or bargraph display No 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 30A 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 display2. 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 3 380942 EU EN V2 1 4 11 Advanced Features 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 AIl 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 To return to normal operation press and hold the ZERO key for 2 seconds until the word ZERO switches off 4 Note that Relative mode is not available if MIN MAX mode is enabled 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 the highest and then the lowest readings encountered Press t
3. 1kHz True RMS 400V 0 1V 1 5 4d 2 0 5d 800V AC Specification Notes e AC Voltage and Current Crest Factor lt 3 e AC DC Voltage Input Impedance 10MQ Copyright 2011 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form www extech com 380942 EU EN V2 1 4 11
4. User s Guide EXT INSTRUMENTS A FLIR COMPANY Model 380942 True RMS AC DC 30A Mini Clamp on Meter Introduction 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 Current sense jaw Measurement Trigger Function switch Data HOLD key MAX MIN key One touch DCA ZERO key LCD Display Positive input terminal for Voltage COM terminal 0 NODO da Wa ZERO HOLD MAX MIN lt gt lt gt Safety Symbols and Information N Caution Refer to the explanation in this Manual A Caution Risk of electric shock LL 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 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 2 380942 EU EN V2 1 4 11 Operation
5. he end of its lifecycle Cleaning Caution Use only a dry cloth to clean the plastic case 5 380942 EU EN V2 1 4 11 Specifications General Specifications Display Functions Polarity Current sensor Overload indication DCA zero adjust Display rate Battery Operating conditions Storage conditions Altitude Power consumption Weight Dimensions Jaw opening Standards Range Specifications 3 3 4 digit 4000 count LCD with 40 segment bargraph ACA DCA ACV DCV Minus sign indicates negative polarity Hall effect sensor type Left blinking digit One touch zero key 2 readings second 20 readings second for bargraph Two 1 5V AA batteries 10 C to 50 C 4 F to 122 F lt 85 Relative Humidity 20 C to 60 C 4 F to 140 F lt 75 Relative Humidity Operate at less than 2000 meters for indoor use only Approximately 10mA DC 190g 6 2 oz including battery 183 x 63 6 x 35 6mm 7 2 x 2 5 x 1 4 H x W xD 23mm 0 9 IEC 1010 Category III 300V Category Il 600V Function Range Resolution Accuracy Overload protect DC Current 4000mA 1mA 2 0 3d 40A DC 30A 10mA 100A DC AC Current 50 60Hz 40 to 100Hz True RMS 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 50 60Hz 40 to
6. he MIN MAX key once to view the minimum reading press it again to view the maximum reading Note that the meter will only change its displayed reading 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 Auto Power Off To extend battery life the meter will auto power off after 30 minutes of operation To resume operation either turn the meter OFF and then ON again or press the HOLD button To disable the auto power off function press down the HOLD key while turning the meter on 4 380942 EU EN V2 1 4 11 Maintenance Battery Replacement 1 2 When the low battery symbol appears on the LCD the batteries must be replaced Turn the meter OFF and remove the rear battery compartment Phillips screw 4 5 3 Lift off the battery compartment cover and replace the two 1 5V AA batteries Replace the compartment cover and secure the screw You as the end user are legally bound EU Battery ordinance to return all used batteries disposal in the household garbage is prohibited You can hand over your used batteries accumulators at collection points in your community or wherever batteries accumulators are sold ii Disposal Follow the valid legal stipulations in respect of the disposal of the device at t
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