residual figures will be decreased gradually and could be disregarded, because
measurement result can override this figure, without affecting the accuracy.
3)
Units: 1nF=10
-3
uF
4)
: Do not connect an external voltage or a charged capacitor (especially larger
capacitors) to the measuring terminals. Capacitors should be discharged before insert
into Cx socket.
3.5
Temperature measurement
1.
Set the FUNCTION switch to the
℃
range.
2.
Insert the cold end (black plug) of thermocouple into socket, and put work end into
measurement place. Display reading is the temperature of measurement place in
℃
.
3.6 Diode and continuity Test
1.
Connect the BLACK test lead to “COM” jack and RED test lead the “V/
Ω
” jack..
(Note: The polarity of the red test probe is “+”).
2.
Set the FUNCTION switch to “
” position.
3.
Connect the test leads across the diode under measurement, display shows the approx.
forward voltage of this diode.
4.
Connect the test probes to two points of circuit, if the resistance is lower than approx. 90
Ω
. Buzzer sounds.
Note:
1) When the input is not connected, i.e. at open circuit, the figure "1" will be displayed.
2) There is a milliamp current flow through the diode under test.
3) The meter displays the forward voltage drop in millivolts and overload when the diode
is reversed.
3.7
HOLD KEY ……The key is used to hold data during measurement. This function is
operative in all measurement method, Pressing the key, reading this held and “ H”
appears in the display. Pressing the key once again in order to releases the hold
function.
4. WARNING
1.
When measuring voltage ensure that instrument is not connected or switched to a current
or resistance range, or to the diode check. Always ensure that the correct terminals are
used for the type of measurement to be made.
2.
Pay attention when measuring voltage above 50V, especially from sources where high
energy is existed.
3.
Avoid making connections to “live” circuits whenever possible.
4.
When making current measurements ensure that the circuit not “live” before opening it in
order to connect the test leads.
5.
Before making resistance measurements or diode test, ensure that the circuit under test is
de-energized.
6.
Always ensure that the correct function and range is selected. If in doubt about the
correct range to use, start from the highest and work downwards.
7.
Extreme care should be taken when using the instrument to conjunction with a current
transformer connected to the terminals if an open circuit occurs.
8.
Ensure that the test leads and probes are good condition with no damage to the insulation.
9.
Take care not to exceed the over-load limits as given in the specification.
10.
FUSE FOR REPLACEMENT MUST BE OF THE CORRECT TYPE AND RATING.
11.
Before opening the case of the instrument to replace battery or fuse, disconnect the test
leads from any external circuit, set the selector switch to “OFF” position.
5. CARE AND MAINTENANCE
5.1Care for your multi-meter
Your Digital Multi-meter is an example of superior design and craftsmanship. The
following suggestions will help you care for the multi-meter so you can enjoy it for
years.
1.
Keep the multimember dry. If it gets wet, wipe it dry immediately. Liquids can contain
minerals that can corrode electronic circuits.
2.
Use and store the multi-meter only in normal temperature environments. Temperature
extremes can shorten the life of electronic devices, damage batteries, and distort or melt
plastic part.
3.
Handle the multi-meter gently and carefully. Dropping it can damage the circuit boards
and case and can cause the multi-meter to work improperly although the holster can
provide enough protection.
4.
Keep the multi-meter away from dust and dirt, which can cause premature wear of parts.
5.
Wipe the multi-meter with a damp cloth occasionally to keep it looking new. Do not use
harsh chemicals, cleaning solvents, or strong detergents to clean the multi-meter.
6.
Use only fresh battery of the required size and type. Always remove old or weak
batteries.
They can Leak chemicals that destroy electronic circuits.
5.2 Maintenance
1) 9-Volt battery replacement
a. Ensure the instrument is not connected to any external circuit. Set the selector switch to
OFF position and remove the test leads from terminals.
b. Remove the screw on the bottom case and lift the bottom case.
c. Remove the spent battery and replace it with a battery of the same type.
2) Fuse replacement
a. Ensure the instrument is not connected to any external circuit. Set the selector switch to
OFF position and remove the test leads from terminals.
b. Remove the screw on the bottom case and lift the bottom case.
c. Replace the fuse with same type and rating: 5x20mm, 200mA/250V, 10A/250V
fast-blow fuse or as the replacements.
