DIGITAL MULTIMETER
CONTENTS
4.10
PREPARING FOR MEASUREMENT
…29
4.11
MEASURING RELATIVE HUMIDITY
…29
4.12
MEASURING TEMPERATURE
(WITH THERMO-RESISTOR)
…30
4.13
MEASURING DC VOLTAGE
…31
4.14
MEASURING AC VOLTAGE
…32
4.15
MEASURING DC MILLIVOLTAGE
…33
4.16
MEASURING AC MILLIVOLTAGE
…34
4.17
MEASURING DC CURRENT
…35
4.18
MEASURING AC CURRENT
…37
4.19
MEASURING FREQUENCY
…38
4.20
MEASURING DUTY
…38
4.21
MEASURING RESISTANCE
…39
4.22
MEASURING CAPACITANCE
…40
4.23
TESTING DIODE
…40
4.24
TESTING CONTINUITY
…41
4.25
TESTING TRANSISTOR
…42
4.26
MEASURING TEMPERATURE
(WITH INFRARED THERMO-SENSOR)
…44
5.
MAINTENANCE
…46
5.1
REPLACING THE BATTERIES
…46
5.2
REPLACING FUSE
…46
5.3
REPLACING TEST LEADS
…48
6.
6.
6.
6.
ACCESSORIES
ACCESSORIES
ACCESSORIES
ACCESSORIES
…49
DIGITAL MULTIMETER
SAFETY INFORMATION NTS
1.
1.
1.
1. SAFETY
SAFETY
SAFETY
SAFETY INFORMATION
INFORMATION
INFORMATION
INFORMATION
WARNING
WARNING
WARNING
WARNING
BE
BE
BE
BE EXTREMELY
EXTREMELY
EXTREMELY
EXTREMELY CAREFUL
CAREFUL
CAREFUL
CAREFUL WHEN
WHEN
WHEN
WHEN US
US
US
USING
ING
ING
ING THIS
THIS
THIS
THIS METER.
METER.
METER.
METER.
Improper
Improper
Improper
Improper use
use
use
use of
of
of
of this
this
this
this device
device
device
device can
can
can
can result
result
result
result in
in
in
in electric
electric
electric
electric shock
shock
shock
shock
or
or
or
or destr
destr
destr
destruction
uction
uction
uction of
of
of
of the
the
the
the meter.
meter.
meter.
meter. Take
Take
Take
Take all
all
all
all normal
normal
normal
normal safety
safety
safety
safety
precautions
precautions
precautions
precautions and
and
and
and follow
follow
follow
follow the
the
the
the safeguards
safeguards
safeguards
safeguards suggested
suggested
suggested
suggested in
in
in
in
this
this
this
this manual.
manual.
manual.
manual.
To
To
To
To exploit
exploit
exploit
exploit full
full
full
full functionality
functionality
functionality
functionality of
of
of
of the
the
the
the meter
meter
meter
meter and
and
and
and ensure
ensure
ensure
ensure
safe
safe
safe
safe operation,
operation,
operation,
operation, please
please
please
please read
read
read
read carefully
carefully
carefully
carefully and
and
and
and follow
follow
follow
follow the
the
the
the
directions
directions
directions
directions in
in
in
in this
this
this
this manual
manual
manual
manual....
This meter complies with the general technical requirements
for the GB/T 19978-92 multimeter as well as the safety
requirements
for
GB4793.1-1995
(IEC-1010-1:1990)
concerning electronic measuring instruments, with pollution
degree 2 and overvoltage at CAT
ΙΙ
1000V/ CAT
ΙΙΙ
600V.
Follow all safety and operation instructions to ensure safe
use of the meter.
With proper use and care, this digital multimeter will give you
years of satisfactory service.
1.1
1.1
1.1
1.1 PRELIMINARY
PRELIMINARY
PRELIMINARY
PRELIMINARY
1.1.1 When using the meter, the user must observe all
normal safety rules concerning:
1) general protection against electric shock
2) protection of the meter against misuse
- 1 -