Lutron SL-4011 Sound Level Meter

Measurement Range 3 ranges, 30 to 130 dB, input signal only.
Resolution 0.1 dB.
Accuracy Frequency weighting meet IEC 61672 class 2, calibrating input signal on 94 dB(31.5 Hz to 8
(23 ± 5 ℃) kHz), then the accuracy of frequency weighting is specified as following:
31.5 Hz – ± 3.5 dB, 63 Hz – ± 2.5 dB, 125 Hz – ± 2.0 dB
250 Hz – ± 1.9 dB, 500 Hz – ± 1.9 dB, 1 kHz – ± 1.4 dB
2 kHz – ± 2.6 dB, 4 kHz – ± 3.6 dB, 8 kHz – ± 5.6 dB
Characteristics of A & C.
Frequency A weighting – The characteristic is simulated as “Human Ear Listing” response. Typical, if making
Weighting Network 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.
Range selector 30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB on each step,
with over & under range indicating.
Time weighting Fast – t= 200 ms, Slow – t = 500 ms,
(Fast & Slow) * “Fast” range is simulated the human ear response time weighting.
“Slow” range is easy to get the average values of vibration sound level.

Power Consumption Approx. DC 6mA.
Dimension 255 x 70 x 28 mm (10.0×2.8×1.1 inch).

Standard Accessories
Instruction Manual 1 PC.
Baterry 9 Volt 1 PC
Hard carrying case, Model : CA-06.