Extech Instruments EX540 User Manual Download Page 14

14                                             EX540-EN V1.2   7/10 

 

REPLACING THE FUSES 

WARNING

: To avoid electric shock, disconnect the test leads from any source of voltage 

before removing the meter cover. 

1. Disconnect the test leads from the meter. 
2. Remove the protective rubber holster. 
3. Remove the battery cover (two “B” screws) and the battery. 
4. Remove the six “A” screws securing the rear cover. 
5. Gently remove the old fuse and install the new fuse into the holder. 
6. Always use a fuse of the proper size and value (0.5A/1000V fast blow for the 400mA 

range [SIBA 70-172-40], 10A/1000V fast blow for the 20A range [SIBA 50-199-06]). 

7. Replace and secure the rear cover, battery and battery cover. 

WARNING

: To avoid electric shock, do not operate your meter until the fuse cover is in 

place and fastened securely. 

 

FCC Part 15 

This equipment has been tested and found to comply with the limits for a Class B digital 
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide 
reasonable protection against harmful interference in a residential installation. This 
equipment generates, uses and can radiate radio frequency energy and, if not installed 
and used in accordance with the instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not occur in a 
particular installation. If this equipment does cause harmful interference to radio or 
television reception, which can be determined by turning the equipment off and on, the 
user is encouraged to try to correct the interference by one or more of the following 
measures: 
—Reorient or relocate the receiving antenna.  
—Increase the separation between the equipment and receiver.  
—Connect the equipment into an outlet on a circuit different from that to which the receiver 

is connected.  

—Consult the dealer or an experienced radio/TV technician for help. 

Warning: 

Changes or modifications not expressly approved by the party responsible for 

compliance could void the user's authority to operate the equipment. 

 

 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for EX540

Page 1: ...User s Guide Wireless TRMS Multimeter Model EX540...

Page 2: ...more terminals identifies them as being associated with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be han...

Page 3: ...IEC 61010 2 USE EXTREME CAUTION when working with high voltages 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 1000V above earth ground 4 NEVER connect the meter leads across a...

Page 4: ...ty Diode test Battery status n nano 10 9 capacitance micro 10 6 amps cap m milli 10 3 volts amps A Amps k kilo 10 3 ohms F Farads capacitance M mega 10 6 ohms RF transmitter active Ohms PEAK Peak Hold...

Page 5: ...Electrocution The probe tips may not be long enough to contact the live parts inside some 240V outlets for appliances because the contacts are recessed deep in the outlets As a result the reading may...

Page 6: ...surements for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads 1 Insert the black test lead banana plug into the negative COM jack 2 For current measurem...

Page 7: ...e red test probe tip to the hot side of the circuit 8 Apply power to the circuit 9 Read the current in the display In the 10AAC range right auxiliary display frequency 10 Press and hold the MODE butto...

Page 8: ...jack and the red test lead banana plug into the positive V jack 3 Press the MODE button to indicate and V on the display 4 Touch the test probes to the diode under test Forward voltage will typically...

Page 9: ...up and connect as described for DC mA measurements 2 Set the rotary function switch to the 4 20mA position 3 The meter will display loop current as a with 0mA 25 4mA 0 20mA 100 and 24mA 125 AUTORANGI...

Page 10: ...1 millisecond in duration Momentarily press the PEAK button PEAK and MAX will display in left auxiliary display MIN will display in right auxiliary display The meter will update the dispay each time...

Page 11: ...he receiver will also blink 5 Once per second the data will be displayed on the pc screen plotted and inserted into a list 6 Hold the backlight button for two seconds to exit the RF wireless transmit...

Page 12: ...Y If it gets wet wipe it off 2 USE AND STORE THE METER IN NORMAL TEMPERATURES Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts 3 HANDLE THE METER GEN...

Page 13: ...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 point...

Page 14: ...the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy...

Page 15: ...0 1V All AC voltage ranges are specified from 5 of range to 100 of range DC Current 400 A 0 01 A 1 0 reading 3 digits 4000 A 0 1 A 40mA 0 001mA 400mA 0 01mA 10A 0 001A 20A 30 sec max with reduced accu...

Page 16: ...0 0001MHz 40MHz 0 001MHz 100MHz 0 01MHz Not specified Sensitivity 0 8V rms min 20 to 80 duty cycle and 100kHz 5Vrms min 20 to 80 duty cycle and 100kHz Frequency electrical 40 00HZ 4KHz 0 01HZ to 0 001...

Page 17: ...ation for positive Minus sign for negative Measurement Rate 2 times per second nominal Low Battery Indication is displayed if battery voltage drops below operating voltage Battery One 9 volt NEDA 1604...

Page 18: ...n any form Garant a Espa ol EXTECH INSTRUMENTS CORPORATION UNA EMPRESA FLIR garantiza este instrumento para estar libre de defectos en partes o mano de obra durante un a o a partir de la fecha de emba...

Page 19: ...nir nos coordonn es Un num ro d autorisation de retour AR doit tre d livr avant tout retour de produit Extech L exp diteur prend sa charge les frais d exp dition le fret l assurance et l emballage cor...

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