Mastech MAS838, Инструкция оператора

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RESISTANCE MEASUREMENT
1.
2.
3.
4. Connect the red test lead to “V.
Ω
. mA” jack and black
test lead to the “COM” jack. (The polarity of red lead is
positive “+”.)
Set the rotary switch at desired ”
Ω
” range position.
Connect test leads across the resistor to be measured
and read LCD display.
If the resistance being measured is connected to a
circuit
，
turn off power and discharge all capacitors before
applying test probes.
AUDIBLE CONTINUITY TEST
1.
2.
3. Connect red test lead to “V.
Ω
.mA”, black test lead to
“COM”.
Set range switch to “
” position.
Connect test leads to two points of circuit to be tested. If
continuity exists, built-in buzzer will sound.
MEASURING TEMPERATURE
1.
2.
3. If the meter is the
℃
function, set the rotary switch at
℃
. Position. If it is the
°
F function, set the rotary switch
at
°
F Position. The LCD display will show the current
environment temperature.
Connect the red lead of
“
K
”
type thermocouple into
the “V.
Ω
.mA” jack and the black lead of
“
K
”
type
thermocouple into the “COM” jack.
Read temperature value on the LCD display.
WARNING:
To avoid electric shock, be sure the thermocouple has been
removed before changing to another function measurement.
BATTERY & FUSE REPLACEMENT
If “ ”appears on display, it indicates that the battery should
be replaced.
Fuse rarely need replacement and blow almost always as a
result of operator’s error.
To replace battery
&
fuse (200mA/250V) remove the 2 screws