Extech Instruments EX350 User Manual Download Page 21

EX35x

en

GB_V1.2

   

12/15

 

21

5.

 

Maintenance

 

 

WARNING:

 

To

 

avoid

 

electrical

 

shock,

 

remove

 

the

 

test

 

leads,

 

disconnect

 

the

 

meter

 

from

 

any

 

circuit

 

and

 

turn

 

OFF

 

the

 

meter

 

before

 

opening

 

the

 

case.

 

Do

 

not

 

operate

 

with

 

an

 

open

 

case.

 

Battery

 

and

 

Fuse

 

Replacement

 

Battery

 

Replacement

 

1.

 

Remove

 

the

 

test

 

leads

 

from

 

the

 

meter.

 

2.

 

Remove

 

the

 

meter’s

 

protective

 

cover.

 

 

3.

 

Remove

 

the

 

Phillips

 

head

 

screw

 

that

 

secures

 

the

 

battery

 

compartment

 

at

 

the

 

back

 

of

 

the

 

meter.

  

Open

 

the

 

battery

 

compartment

 

and

 

replace

 

the

 

two

 

AA

 

batteries

 

observing

 

correct

 

polarity.

 

Re

assemble

 

the

 

meter

 

before

 

use

 

Safety:

 

Please

 

dispose

 

of

 

batteries

 

responsibly;

 

never

 

dispose

 

of

 

batteries

 

in

 

a

 

fire,

 

batteries

 

may

 

explode

 

or

 

leak.

 

If

 

the

 

meter

 

is

 

not

 

to

 

be

 

used

 

for

 

60

 

days

 

or

 

more,

 

remove

 

the

 

battery

 

and

 

store

 

separately.

 

 

Fig

 

5

1

 

BATTERY

 

AND

 

FUSE

 

REPLACEMENT

 

Fuse

 

Replacement

 

The

 

600mA

 

fuse

 

can

 

be

 

replaced

 

from

 

the

 

battery

 

compartment.

 

4.

 

To

 

replace

 

the

 

10A

 

fuse,

 

remove

 

the

 

four

 

(4)

 

screws

 

that

 

secure

 

the

 

meter

 

housing.

 

Remove

 

the

 

small

 

Phillips

 

screw

 

in

 

the

 

battery

 

compartment.

 

5.

 

Replace

 

the

 

fuse

 

with

 

one

 

of

 

the

 

same

 

type

 

and

 

rating.

 

Reassemble

 

the

 

meter

 

before

 

use.

 

 

 

 

Never

 

dispose

 

of

 

used

 

batteries

 

or

 

rechargeable

 

batteries

 

in

 

household

 

waste.

 

As

 

consumers,

 

users

 

are

 

legally

 

required

 

to

 

take

 

used

 

batteries

 

to

 

appropriate

 

collection

 

sites,

 

the

 

retail

 

store

 

where

 

the

 

batteries

 

were

 

purchased,

 

or

 

wherever

 

batteries

 

are

 

sold.

 

Disposal:

 

Do

 

not

 

dispose

 

of

 

this

 

instrument

 

in

 

household

 

waste.

 

The

 

user

 

is

 

obligated

 

to

 

take

 

end

of

life

 

devices

 

to

 

a

 

designated

 

collection

 

point

 

for

 

the

 

disposal

 

of

 

electrical

 

and

 

electronic

 

equipment.

  

 

Cleaning

 

and

 

Storage

 

Periodically

 

wipe

 

the

 

case

 

with

 

a

 

damp

 

cloth

 

and

 

mild

 

detergent;

 

do

 

not

 

use

 

abrasives

 

or

 

solvents.

  

Summary of Contents for EX350

Page 1: ...USER GUIDE True RMS Digital Multimeters EX350 Series EX350 True RMS Digital Multimeter EX355 True RMS Digital Multimeter with Temperature...

Page 2: ...s 10 10A AC DC Current Measurements 12 mA A AC DC Current Measurements 13 Non Contact Voltage Detector 14 Resistance Measurements 15 Continuity Measurements 16 Capacitance Measurements 16 Lo Z AC Volt...

Page 3: ...liable service Please visit our website www extech com to check for the latest version of this User Guide Product Updates Product Registration and Customer Support Features 6000 count EX355 or 4000 co...

Page 4: ...r Guide Use caution working with voltages above 30 VAC RMS 42 VAC peak or 60 VDC These voltages pose a shock hazard To avoid misleading readings that could lead to electric shock and injury replace th...

Page 5: ...s in which measures are taken to limit the transient over voltages to an appropriate low level Note Examples include protected electronic circuits OVERVOLTAGE CATEGORY II Equipment of OVERVOLTAGE CATE...

Page 6: ...on 4 Hz button 5 Mode and LPF Button 6 Rotary function select switch 7 10A input terminal 8 uA and mA input terminal 9 Common input terminal 10 Positive input terminal Voltage Resistance Capacitance T...

Page 7: ...o F Temperature units F Farads Capacitance measurement units Hz Hertz Frequency measurements unit Duty Cycle AC only Ohms Resistance measurement unit LPF Variable frequency voltage mode Battery status...

Page 8: ...AC DC TEMP EX355 C F Press and Hold LPF in the ACV function to select variable frequency tests Press R Range to switch from Auto to Manual Range Hold to return to Auto Range Press activates Relative m...

Page 9: ...r OFF after 15 minutes of inactivity To defeat this feature follow the steps below 1 With the meter OFF press and hold the M MODE button and while continuing to hold turn the rotary function switch to...

Page 10: ...r DC EX355 only 4 The meter defaults to the Auto Range mode Auto displayed on LCD Press the R button to access the manual range mode Press the R button to step through the ranges Press and hold the R...

Page 11: ...test Be sure to observe the correct polarity red lead to positive black lead to negative 6 The meter defaults to the Auto Range mode Auto displayed on LCD Press the R button to access the manual rang...

Page 12: ...s and Hold the R button to return to the Auto Range mode 5 Current measurements must be taken in series with the circuit under test See accompanying diagram 6 Touch the black test lead to the negative...

Page 13: ...ss the R button to manually range the meter Press the R button to step through the ranges Press and Hold the R button to return to the Auto Range mode 4 Press the M button to select AC or DC 5 Current...

Page 14: ...e meter does not emit a tone or flash the LED in this mode there is still the possibility that voltage is present Please use caution 1 Turn the function switch to the NCV position to access the Non Co...

Page 15: ...icon showing 4 The meter defaults to the Auto Range mode Auto displayed on LCD Press the R button to access the manual range mode Press the R button to step through the ranges Press and Hold the R bu...

Page 16: ...e Measurements WARNING To avoid electric shock remove power to the circuit under test and discharge the capacitor under test before measuring Do not test on circuits or devices where 60VDC or 30VAC is...

Page 17: ...proper decimal point and measurement type units symbols Variable Frequency Voltage Measurements When the function switch is turned to the LPF position the meter can measure voltage on signals with va...

Page 18: ...e LCD when in Diode test mode 3 Touch the test probe tips to the diode or semiconductor junction under test Note the meter reading 4 Reverse the test lead polarity by reversing the red and black leads...

Page 19: ...rving correct polarity 2 Turn the function switch to the Temp position Use the M button to select the desired unit of measure 3 Touch the temperature probe tip to the device under test or leave the te...

Page 20: ...active Subsequent readings will now be compared to the stored reference Displayed Reading Measurement minus Reference Press the REL button again to exit the Relative mode the Relative symbol will swit...

Page 21: ...y and store separately Fig 5 1 BATTERY AND FUSE REPLACEMENT Fuse Replacement The 600mA fuse can be replaced from the battery compartment 4 To replace the 10A fuse remove the four 4 screws that secure...

Page 22: ...0 2 5 Add 7 0 for C F 2 5 3 0 Function Range Resolution Accuracy DC Voltage EX350 EX355 40 00mV 60 00mV 10 V 0 7 5 digits 400 0mV 600 0mV 0 1mV 0 5 2 digits 4 000V 6 000V 1mV 0 5 3 digits 40 00V 60 00...

Page 23: ...y A EX350 EX355 400 0 A 600 0 A 0 1 A 1 0 3 digits 4000 A 6000 A 1 A mA 40 00mA 60 00mA 10 A 400 0mA 600 0mA 0 1mA A 4 000A 6 000A 1mA 1 2 3 digits 10 00A 10 00A 10mA ACA Frequency Response 45 400Hz F...

Page 24: ...quency for Voltage or Current functions Frequency 1kHz AC voltage input amplitude of mV range 100mV input amplitude of V range the range 6 AC current input amplitude a 4000 6000 A 400 600mA 10A range...

Page 25: ...C 86 to 104 F 50 RH maximum Storage Temperature and Humidity 10 to 50 C 14 to 122 F 80 RH maximum with battery removed Operating Altitude 2000m 6562 Battery power 2 AA batteries battery life 130 hours...

Reviews: