Tenma 72-8720, Руководство пользователя

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18
Continuity Test
Range Resolution Overload Protection Remarks
0.01 Ω 1000V rms
Open circuit voltage
approximate -1.2V.
When circuit disconnected
with resistance
value >50Ω ,
buzzer does not sound.
When circuit is in good
connection with resistance
value <10 Ω buzzer sounds
continuously
Diode Test
0.0001mV 1000V rms
Open circuit voltage
approximate 2.8V.
Working current
approximate 1mA.
Duty Cycle
100% 0.01% ± (1%+40) 1000V
4~20mA Loop Current
(4~20mA)% 0.01% ± (1%+50)
Fuse 0.5A, 250V,
fast type, 5x20mm.
MAINTENANCE
Cleaning
• Periodically wipe the case with damp cloth and mild detergent. Do not use
abrasives or solvents for cleaning.
• Clean the measurement probe tips occasionally, as dirt on the probes can affect
reading accuracy.
Replacing the fuses
• Press the POWER button to turn the meter off, disconnect the power cord and
remove all connections from the terminals.
• Fuse 3: Remove the screws from the power socket at the rear of the meter.
Remove the fuse by gently prying one end loose, then take out the fuse from its
holder. Refit a replacement fuse.
• Fuse 1 and 2: Open the accessories compartment at the top of the front cover,
then open the fuse compartment to replace fuse 2 and 3. Remove the fuse by
gently prying it loose from its holder. Install the replacement fuse.
• Use ONLY replacement fuses with the identical type and specification as follows
and make sure the fuse is inserted firmly in the holder.
• Fuse 1: 0.5A, 250V, fast type, 5x20mm
• Fuse 2: 10A, 250V, fast type, 5x20 mm
• Fuse 3: 0.2A, 250V, fast type, 5x20 mm