to the area or surface of the object for measurement.
- You can get reading from LCD.
To avoid electrical shock, do not connect the
thermocouples with the electriferous circuit.
4.7 Battery test (only MS8221D)
- Set the rotary switch to desired
BATT
range.
- Connect the black and red test leads to the COM and
V
Ω
terminals respectively.
- Connect the test leads across the battery terminals
under measurement.
- Read LCD display and determine if the battery is OK.
4.8 Transistor measurement
- Set the rotary switch to hFE range.
- Determine whether the transistor to be tested is NPN
or PNP type and locate the Emitter, Base and
Collector leads.
- Insert leads of the transistor into proper holes of the hFE
socket.
- The meter will show the approx. hFE value at test
condition of base current 10
μ
A and Vce 2.8V.
To avoid electrical shock and/or damage to the
instrument,
before
attempting
to
insert
transistors for testing, always be sure that test
leads have been disconnected from any
measurement circuits
．
