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LUTRON SL-4022 Noise Decibel Meter, ระดับเสียงเดซิเบล, SL4022 Volume Meter Sound Level Meter Instrument Noise Decibel Meter.
Brand : Lutron
Model: SL-4022
Stock No: G&G SL4022
Product Description:
Noise measurement range: 30 ~ 130dB(Decibel)
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LUTRON SL-4022 Noise Decibel Meter, ระดับเสียงเดซิเบล, SL4022 Volume Meter Sound Level Meter Instrument Noise Decibel Meter.
Brand : Lutron
Model: SL-4022
Stock No: G&G SL4022
Product Description:
Noise measurement range: 30 ~ 130dB(Decibel)
Measurement frequency range: 31.5 ~ 8000Hz
Accuracy: ±1dB(94 dB/1KHz)
Line with international normsIEC651Type1
WithA&CFrequency weighting and fast time-weighted&Slow select(Weighting)
Grab the maximum noise value
AttachACVoltage signal output to an external recorder
Size : 260 × 87 × 36mm
Electrical Specifications:
Obvious Show Device : 18mm LCD,3 1/2 digits
Measurement functions:
dB(A&C frequency weighting), Time weighting(Fast, Slow), Max hold, Max hold reset, AC output
Test range:
3 ranges ( 30 - 70 dB,60 - 100 dB,90 - 130 dB )
Solution Analyze Degree : 0.1 dB
Fine Indeed Degree:
Time weighting & frequency weighting meet IEC 651 type 1, calibrating input signal on 94 dB
(31.5 Hz to 8 kHz), the accuracy of A weighting is specified as following:
31.5 Hz - ± 1.5 dB, 63 Hz -± 1.5 dB, 125 Hz - ± 1 dB,250 Hz - ± 1 dB, 500 Hz - ± 1 dB,
1 kHz -± 1 dB,2 kHz - ± 1 dB, 4 kHz - ± 1 dB, 8 kHz - + 1.5 dB to -3 dB
Frequency weightingwork
Characteristics of A & C.
A weighting - The characteristic is simulated as "Human Ear Listing" response. Typical, if making the environmental sound level measurement, always select to A weighting.
C weighting - The characteristic is near the "FLAT" response. Typical, it is suitable for checking the noise of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment
The test frequency range : 31.5 Hz to 8,000 Hz
School Positive Device : B & K (Bruel & kjaer), multi-fuction acoustic calibrator, model : 4226
Microphone types : Electric condenser microphone.
Microphone size : 1/2 inch standard size.
Range selection : 30 to 70 dB,60 to 100 dB,90 to 130 dB,40 dB on each step,with over & under range indicating
Time-weightedwork (Fast / Slow): Fast - t= 200 ms, Slow - t = 500 ms,
* "Fast" range is simulated the human ear response time weighting.
"Slow" range is easy to get the average values of vibration sound level.
* The "Fast" & "Slow" time weighting range are designed to IEC 651 type 2 requirement
Correction methods
Build in external calibration VR, easy to calibrate on 94 dB level by screw driver.
Internal oscillation system, 1 KHz sine wave generator
Output signal : AC output - AC 0.4 Vrms corresponding to each range step.
Output terminal : 3.5 phone output terminal is provided for connection with analyzer, level recorder, tape recorder.
General Specifications:
Use the power:
DC 9V battery x 2 PCs or equivalent,heavy duty or alkaline type.
Current consumption : Approx. DC 17mA.
Operating ambient temperature : 0 to 50
Operating Humidity : Less than 80% RH
Dimensions : 260×87×36 mm
Weight Amount : 450 g.(including battery)
Standard Accessories
Instruction Manual .................................................... 1 PC
Carrying case............................................................ 1 PC
Optional accessories
94 dB Sound Calibrator, model : SC-940, model : SC-941
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