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Uni-T UT55 Расширенная инструкция онлайн [2/20] 528139
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Safety Rules
l Do not operate the Meter before the cabinet
has been closed and screwed safely as
terminal can carry voltage.
l Make sure before each measurement the
Meter is set to the suitable range.
l Before using the Meter, please inspect the
cabinet and test leads for damaged insulation
or exposed metal.
l Connect the red and black test lead to the
correct measuring input jack properly.
l Do not input values over the maximum
range of each measurement to avoid damages
of the Meter.
l The UNI-T UT50 series comply with
IEC 61010: in pollution degree 2,
overvoltage category (CAT I 1000V and
CAT II 600V) and double insulation.
Use the Meter only as specified in this
manual, otherwise the protection provided
by the Meter may be impaired.
l CAT I-For signal level, telecommunication,
electronic with small transient over voltage.
l CAT II -For local level, appliances, main
wall outlets, portable equipment.
l The meter is designed to withstand the
stated Max. voltages. If it’s not possible
to exclude without doubts that impulses,
transients, disturbance or for other reasons,
these voltages are exceeded a suitable
prescale (10:1) must be used.
l Do not turn the rotary function switch
during Voltage and Current measurement,
otherwise the Meter could be destroyed.
Model UT51-55: OPERATING MANUAL
2
Содержание
- The meter is suitable for indoor use only 3
- Accuracy is specified for one year after calibration 5
- At operating temperatures 23 5
- B 1direct current voltage dc voltage 5
- B 2 alternating current voltage ac voltage 5
- B specifications 5
- Frequency 40hz 400hz overload protection 200mv is 250vdc or ac rms all other ranges is 750vrms or 1000vp p display average value rms of sine wave 5
- Input impedance all ranges are 10 5
- Overload protection 200mv is 250vdc or ac rms all other ranges is 750vrms or 1000vp p 5
- With relative humidity at 75 accuracy specifications take the form of a readings digits 5
- B 5 resistance 8
- B 6 capacitance 8
- B 7 frequency 8
- Range as test lead is short circuit the lcd display 10 digits is normal deduct the 10 digits from the measured reading during measuring 8
- Range open circuit voltage around 3v overload protection all ranges 250vdc or ac rms caution at 200 8
- Testing signal around 400hz 40mvrms 8
- Voltage at open circuit 700mv 200 8
- B 10 transistor hfe test 9
- B 8 temperature 9
- B 9 diode test and continuity beeper 9
- Input sensitivity 100mvrms overload protection 250vrms 9
- Overload protection 250v dc or ac rms 9
- C making measurements 10
- Capacitance jack 10
- Input jack 10
- Liquid crystal display 10
- On off switch 10
- Rotary switch 10
- Temperature jack 10
- Transistor jack 10
- Please refer to dc current caution 1 2 3 12
- C 7 measuring frequency 14
- D maintenance i general service 15
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