Triplett 1401 - Manual (Page 3)

7-10-3 Connect the test leads to the two points of the circuit under test.
Press the SELECT button once the continuity symbol appears
on the top of the LCD and the “ Ω” units appear on the lower right of
the display.
7-10-4 If there is continuity (resistance is lower than approximately 50Ω)
the built-in beeper will sound.
NOTE:
1. Do not attempt this measurement on energized circuits.
2. If the leads are reversed, not connected, or connected to a resistance
more than approximately 2000Ω, “1” (over range) should be displayed
7-11 Measuring Capacitance
7-11-1 Connect the black test lead to COM jack and red lead to VΩmA jack.
7-11-2 Set the rotary switch at the desired “Ω╟ ” range position
7-11-3 Connect test leads across the capacitance to be measured.
7-11-4 Press the SELECT button three times, until the “n F” units appear on
the lower right of the display.
7-11-5 Read the capacitance from the LCD.
NOTE: Capacitors should be discharged before being tested.
7-12 Non Contact AC Voltage detection
7-12-1 Set the rotary switch at the desired “NCV” range position.
This activates the Non Contact AC Voltage (NCV) detection circuit,
and the NCV green LED will illuminate. The “ NCV” symbol will
appear on the display along with “EF”.
7-12-2 Position the meter so the top is parallel to and in contact with, or
close to the conductor. When the AC voltage ≥90V AC RMS, the
NCV red LED and green LED will flash and the buzzer will sound.
NOTE:
1. Even if the meter doesn’t indicate the presence of AC voltage, the
voltage may still be present. Do not rely on the non-contact voltage
detector to determine the presence of live voltage. Voltage detection may
be affected by socket design, insulation thickness, shielding, and other
AC voltage field interaction. The NCV detector does not detect DC
voltages.
2. If the meter test leads are connected and measuring AC voltage, the NCV
detector circuit will also indicate AC voltage presence (LEDs and buzzer
activation) if NCV mode is activated.
3. Proximity of florescent lights, dimmable lights, motors, and other large
AC field generating devices can trigger Non-Contact AC Voltage
detection function and invalidate the test.
8. Battery Replacement
8-1 If the battery voltage drops below proper operation range the “ “
symbol will appear on the LCD display and the battery should be
changed.
8-2 Before attempting to remove the rear cover to replace the battery, be
certain the test leads have been disconnected from the circuit to avoid
electrical shock hazard. Power off the meter and remove the test leads
from the banana jacks. To access the battery, remove the (2) screws in
the rear cover and lift the cover.
8-3 Replace the old battery with the same type battery (1.5V AA. R6
or LR6).
8-4 Replace the rear cover of the meter and reinstall the (2) screws.
9. Fuse replacement
9-1 To avoid electrical shock or injury, remove test leads from circuitry
before replacing the fuse.
9-2 Before attempting to remove the rear cover to replace the fuse, be
certain the test leads have been disconnected from the circuit. Power off
the meter and remove the test leads from the banana jacks. To
access the fuse holder, remove the (2) screws in the rear cover and lift
the cover.
9-3 Replace the old fuse only with the same type and rating: 6×30mm
800mA/500V fast fuse or 10A/500V fast fuse
9-4 Replace the rear cover and reinstall the (2) screws.
10. Maintenance
10-1 Before attempting to remove the battery cover or open the case, be
certain that test leads have been disconnected from energized circuitry
to avoid electric shock hazard.
10-2 Replace the test leads if the any wire is exposed, or if they become
damaged.
10-3 Do not use harsh chemicals or solvents to clean the meter.
10-4 Do not use the meter with the rear cover removed. Injury may result.
10-5 If the meter will not be used for more than 1 month, remove the battery
to avoid possible damage from battery leakage.
7-5 Measuring AC Current
7-5-1 Connect the black test lead to COM jack and red lead to VΩmA jack
for maximum 800mA current. For a maximum 10A current, move the
red lead to the 10A jack.
7-5-2 Set the rotary switch to the desired “A ” range position. Press the
SELECT button once or until “AC” appears on the top of the LCD and
the “ mA” or “A” units appear on the lower right of the display. You can
press the RANGE button to switch between measurement ranges
manually, or leave the meter in “Auto range” mode.
7-5-3 Observing polarity, connect test leads in series with the load under
measurement.
7-5-4 Read the current on the LCD.
NOTE:
1. When the quantity to be measured is unknown, be sure that the meter is
in “Autorange” mode and consider whether to use the 800mA or 10A input
jack before connecting test leads to the circuit.
2. When only “1” or “-1” is displayed, it indicates “over range”. Either select
a higher measurement range or do not continue to measure.
3. Current above 800mA on the VΩmA jack will blow the fuse. The 10A jack
is fused at 10A. Do not apply more than 10A and do not apply 10A for
longer than 10 seconds. Allow a 15 minute cooldown.
4. If fuse blows, remove meter from circuit under test. Replace fuse by
removing the rear cover (2 screws) to access fuse.
7-6 Measuring Resistance
7-6-1 Connect the black test lead to COM jack and red lead to VΩmA jack.
7-6-2 Set the rotary switch to the desired Ω╟ range position.
7-6-3 Connect the test leads across the resistance under measurement
7-6-4 Read the resistance on the LCD.
NOTE:
1. DO NOT APPLY VOLTAGE WHEN MEASURING RESISTANCE.
2. If “1” or “-1” is displayed, it indicates over range. This means that the test
leads are not making connection to the circuit, or the resistance exceeds
the measurement ability of the selected range. Select a higher range to
obtain a measurement.
3. When checking in-circuit resistance, be sure the circuit under test has
all power removed and that all capacitors have been fully discharged .
7-7 Measuring Temperature
7-7-1 Set the rotary switch to the °C/°F range position.
7-7-2 The LCD will show the present temperature of the meter.
7-7-3 To use the K-type thermocouple probe, connect the black banana plug
of the probe into the COM jack and the red banana plug to the VΩmA
jack.
7-7-4 The temperature of the thermocouple probe tip is displayed on the
LCD
7-7-5 The probe included with the meter can be used for measuring
temperature up to 482 °F. To accurately measure higher
temperatures, use a high temperature rated K-type probe.
NOTE:
1. Do not connect the thermocouple probe to a voltage source
7-8 Battery Testing
7-8-1 Connect the black test lead to COM jack and red lead to VΩmA jack.
7-8-2 Set the rotary switch to the proper “ ” or “ ” range position to
test either a 1.5V or 9V battery.
7-8-3 Connect test leads to the + and - terminals of the battery under test
7-8-4 The LCD displays the battery’s voltage at the rated test current.
7-9 Diode Testing
7-9-1 Connect the black test lead to COM jack and red lead to VΩmA jack.
7-9-2 Set the rotary switch to the “Ω╟ ” position.
7-9-3 Connect the red lead to the anode of the diode to be tested, and the
black lead to the cathode. Press the SELECT button two times, until
the diode symbol appears on the top of the LCD and the “V” units
appear on the lower right of the display
7-9-4 The diode’s forward voltage drop is displayed on the LCD.
NOTE :
1. The meter will display the approximate forward voltage drop of the diode.
2. If the leads are reversed or not connected, “1” (over range) should be
displayed
7-10 Continuity Testing
7-10-1 Connect the black test lead to COM jack and red lead to VΩmA jack.
7-10-2 Set the rotary switch to the “Ω╟ ” position.