Elma DT173, Руководство пользователя

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Elma DT173 side 12
English Manual
SAFETY INFORMATION
Read the following safety information carefully before attempting to operate or service the meter.
Use the meter only as specified in this manual
：
Environment conditions
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Altitude lower than 2000 meters
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Relatively humidity ≤90%RH
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Operation Ambient 0 ~ 40°C
Maintenance & Clearing
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Repair or servicing not covered in this manual should be performed by qualified personnel.
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Periodically wipe the case with a dry cloth. Do not use solvents or eradicator on this instrument.
Safety symbols
Comply with EMC
FUNCTIONS DESCRIPTION
This SLD (SOUND LEVEL DATALOGGER) is designed for noise project; quality control; illness
prevention and cure and all kinds of environmental sounds measurement. It is applied to the
sounds measurement at factory; school; office; traffic access and household, etc.
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This unit confirms to the IEC61672-1 CLASS2 for Sound
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Level Meters.
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NORM (Normal) & PEAK mode
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Over range indication
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A & C Weighting
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FAST & SLOW response
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Manual & Automatic start
Note:
1. In NORM mode, 20 data will be picked (one datum per 50ms) and the average value of the 20
data will be stored. At the same time, a PEAK MAX. & a PEAK MIN. will be picked wihtin all the
sampling data. If sampling rate > 10s, the periphery power will be off before reaching sampling
time to save battery energy. This time just need only 30uA electric current.
2. In PEAK mode, DataLogger will always measure data
with 50ms spacing. PEAK value means the MAX. and MIN. reading in the whole measurement
but not the MAX. and MIN. sampling value. The stored sampling value is the MAX. of the 20
sampling data but not the average.
Specification
Standard applied: IEC61672-1 CLASS2
Accuracy: ± 1.4dB
Frequency range: 31.5Hz ~ 8kHz
Dynamic range: 50dB
Measure range: 30dB~130dB
Data memory: 129920 data
Sampling rate: 1 second to 24 hours
Frequency weighting: A and C
Time weighting: FAST 125MM, SLOW 1SECOND
Microphone: 1/2 inch electret condenser microphone
Operating indication: green LED flash
Memory full indication: yellow LED flash