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1. injury or death Read and understand this user manual before operating the meter e Always remove the test leads before replacing the battery or fuses e Inspect the condition of the test leads and the meter itself for any damage before operating the meter Repair or replace any damage before use e Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC These voltages are considered a shock hazard e Always discharge capacitors and remove power from the device under test before performing Diode Resistance or Continuity tests e Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed electrical contacts Other means should be used to ensure that the terminals are not live e If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired e This device is not a toy and must not reach children s hands It contains hazardous objects as well as small parts that the children could swallow In case a child swallows any of them please contact a physician immediately e Do not leave batteries and packing material lying around unattended they can be dangerous for children if they use them as toys e Incase the device is going to be unused for an extended period of time remove the batteries to prevent them from training e Expired or damaged batteries can cause cauteriza
2. a FLIR company All rights reserved including the right of reproduction in whole or in part in any form www extech com 11 EX720 EU EN V3 2 3 12
3. position 8 EX720 EU EN V3 2 3 12 Specifications Range amp i he AC Voltage eer 50 60Hz True RMS 4 T AC evas 00V AC 1 5 5d 400 0V AC 2 0 5d DC Voltage 0 8 2d 1 5 2d 2 0 2d Resistance 1 0 4d 1 5 2d 2 5 3d 3 5 5d Capacitance 5 0 30d 5 0 20d 3 0 5d 4 0 10d 10 10d See io eS co Frequency Sensitivity 100V lt 50Hz 50V 50 to 400Hz 5V 401 to 4000Hz 9 EX720 EU EN V3 2 3 12 General Specifications Clamp jaw opening Display Continuity check Diode test Low Battery indication Over range indication Measurement rate PEAK Temperature sensor Input Impedance AC bandwidth AC response Crest Factor Operating Temperature Storage Temperature Operating Humidity Storage Humidity Operating Altitude Battery Auto power OFF Dimensions amp Weight Safety 30mm 1 2 approx 3 3 4 digits 4000 counts backlit LCD Threshold 400 Test current lt 0 5mA Test current of 0 3mA typical Open circuit voltage lt 3VDC typical BAT is displayed OL display 2 readings per second nominal Captures peaks gt 1ms Type K thermocouple 10MQ VDC and VAC 50 to 400Hz AAC and VAC True rms AAC and VAC 3 0 in 40A and 400A ranges 1 4 in 800A range 50 60Hz and 5 to 100 of range 5 C to 40 C 41 F to 104 F 20 C to 60 C 4 F to 140 F Max 80 up to 31 C 87 F decreasing linearl
4. User s Guide EXT INSTRUMENTS A FLIR COMPANY 800 Amp True RMS AC Clamp Meter Model EX720 Introduction Congratulations on your purchase of the EX720 Clamp DMM Careful use of this meter will provide many years of reliable service Safety International Safety Symbols This symbol adjacent to another symbol or terminal indicates the user must refer to the manual for further information A This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present O Double insulation SAFETY NOTES e Do not exceed the maximum allowable input range of any function e Do not apply voltage to meter when resistance function is selected e Set the function switch OFF when the meter is not in use e Remove the battery if meter is to be stored for longer than 60 days WARNINGS e Set function switch to the appropriate position before measuring e When measuring volts do not switch to current resistance modes e Do not measure current on a circuit whose voltage exceeds 600V e When changing ranges always disconnect the test leads from the circuit under test UL Note A UL mark does not indicate that this product has been evaluated for accuracy Function i Maximum Input 800A AC V DC VAC 600V DC AC Resistance Capacitance Frequency Diode Test 250V DC AC Temperature 60V DC 24V AC 2 EX720 EU EN V3 2 3 12 CAUTIONS e Improper use of this meter can cause damage shock
5. current clamp measurements 1 Setthe Function switch to the 800A 400A or 40A range If the approx range of the measurement is not known select the highest range then move to the lower ranges if necessary 2 Press the trigger to open jaw Fully enclose only one conductor For optimum results center the conductor in the jaw 3 The clamp meter LCD will display the reading Correct Incorrect AC DC Voltage Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the positive V Q CAP TEMP Hz termiki Set the function switch to the V Hz position Use the MODE button to select AC or DC Voltage Connect the test leads in parallel to the circuit under test o Read the voltage measurement on the LCD display 5 EX720 EU EN V3 2 3 12 Resistance Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the V Q CAP TEMP Hz gt positive terminal 2 Set the function switch to the Q position 3 Touch the test probe tips across the circuit or component under test 4 Read the resistance on the LCD display Capacitance Measurements WARNING To avoid electric shock discharge the capacitor under test before measuring 1 Set the function switch to the CAP position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V O CAP TEMP Hz 3F posit
6. horted T EX720 EU EN V3 2 3 12 Data Hold To freeze the LCD reading press the HOLD button While data hold is active the HOLD icon appears on the LCD Press the HOLD button again to return to normal operation Peak Hold The Peak Hold function captures the peak AC or DC voltage or current The meter can capture negative or positive peaks as fast as 1 millisecond in duration Turn the function switch to the A or V position Allow time for the display to stabilize Press and Hold the PEAK button until CAL appears in the display This procedure will zero the range selected Press the PEAK button Pmax will display The display will update each time a higher positive peak occurs 6 Press the PEAK button again Pmin will display The display will now update and indicate the lowest negative peak 7 To return to normal operation press and hold the PEAK button until the Pmin or Pmax indicator switches off Note If the Function switch position is changed after a calibration the Peak Hold calibration must be repeated for the new function selected LCD Backlight Button The LCD is equipped with backlighting Press the backlight button to turn the backlight on Press again to turn the backlight off Automatic Power OFF In order to conserve battery life the meter will automatically turn off after approximately 25 minutes To turn the meter on again turn the function switch to the OFF position and then to the desired function
7. ive jack 3 Touch the test probe tips across the part under test If diSC appears in the display remove and discharge the component 4 Read the capacitance value in the display 5 The display will indicate the proper decimal point and value Note For very large values of capacitance measurement it can take several minutes before the final reading stabilizes Frequency Measurements 1 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V Q CAP TEMP Hz3F positive jack 2 Set the function switch to the V Hz Position En Press and hold the MODE button to select the Frequency Hz function k Hz will appear in the display Touch the test probe tips across the part under test Read the Frequency value on the display The display will indicate the proper decimal point and value OA CDE A Press and hold the MODE button again to return to the voltage mode 6 EX720 EU EN V3 2 3 12 Temperature Measurements 5 WARNING To avoid electric shock be sure the thermocouple probe has been removed before changing to another measurement function Set the function switch to the TEMP position Insert the Temperature Probe into the negative COM and the V QO CAP TEMP Hz gt positive jacks observing polarity Touch the Temperature Probe head to the device under test Continue to touch the part under test with
8. the probe until the reading stabilizes Read the temperature on the display The digital reading will indicate the proper decimal point and value Use the MODE button to select F or C Continuity Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the V O CAP TEMP Hz gt F positive terminal Set the function switch to the position Use the MODE button to select continuity The display icons will change when the MODE button is pressed 4 Touch the test probe tips across the circuit or component under test 5 Ifthe resistance is lt 400 a tone will sound Diode Test 1 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V Q CAP TEMP Hz Fpositive jack 2 Turn the function switch to gt F position Use the MODE button to select the diode function if necessary diode symbol will appear on the LCD when in Diode test mode 3 Touch the test probe tips to the diode or semiconductor junction under test Note the meter reading Reverse the test lead polarity by reversing the red and black leads Note this reading The diode or junction can be evaluated as follows e If one reading displays a value typically 0 400V to 0 900V and the other reading displays OL the diode is good e If both readings display OL the device is open If both readings are very small or 0 the device is s
9. tion on contact with the skin Always therefore use suitable hand gloves in such cases e See that the batteries are not short circuited Do not throw batteries into the fire 3 EX720 EU EN V3 2 3 12 Description Meter Descri Current Clamp opening trigger 3 Control SL pr gi e Display icons Description HOLD Minus sign 0 to 3999 PEAK AUTO DC AC BAT mV or V Q A F Hz F and C n m u M k Backlit LCD Display COM negative input jack for black test lead Rotary function switch V Q CAP TEMP Hz gt positive input jack for red lead ption clamp buttons Data Hold Mode Peak Backlight Data Hold Negative reading display Measurement display digits Peak capture Auto Range mode Direct Current Alternating Current Low battery Milli volts or Volts Voltage Ohms Resistance Amperes Current Farad Capacitance Hertz Frequency Fahrenheit and Celsius units Temperature Unit of measure prefixes nano milli micro mega and kilo Continuity test Diode test ZERO PEAK numF MkQHz gt F al CICILY 4 EX720 EU EN V3 2 3 12 Operation NOTES Read and understand all Warning and Caution statements in this operation manual prior to using this meter Set the function select switch to the OFF position when the meter is not in use AC Current Measurements WARNING Ensure that the test leads are disconnected from the meter before making
10. y to 50 at 40 C 104 F lt 80 2000meters 7000ft maximum One 1 9V Battery After approx 25 minutes 229 x 80 x 49mm 9 0 x 3 1 x 2 0 303g 10 7 oz For indoor use and in accordance with the requirements for double insulation to IEC1010 1 2001 EN61010 1 2001 Overvoltage Category III 600V and Category Il 1000V Pollution Degree 2 10 EX720 EU EN V3 2 3 12 Maintenance WARNING To avoid electrical shock disconnect the meter from any circuit remove the test leads from the input terminals and turn OFF the meter before opening the case Do not operate the meter with an open case Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent do not use abrasives or solvents If the meter is not to be used for 60 days or more remove the battery and store it separately Battery Replacement 1 Remove the Phillips head screw that secures the rear battery door 2 Open the battery compartment 3 Replace the 9V battery 4 Secure the battery compartment 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 Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Copyright 2012 Extech Instruments Corporation

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