Description
LUTRON-Digital sound level meter SL-4022, 100% authentic, SL4022, type 1, 30-130DB, new-Noise
measurement range: 30 ~ 130dB (decibels)
-Frequency measurement range: 31.5 ~ 8000Hz-Accuracy
: ± 1dB(94 dB/1KHz)
-With frequency and time weighting-fast-weighted and slow selection (weighting).
-Get the maximum noise
value-Attach voltage signal output to an external
recorder-Size: 260 × 87 × 36mm
Electrical Specifications:
-Visible Display Device: 18mm LCD, 3 1/2 digits
-Measurement Functions: DB (Frequency Weighting A & C), Time Weighting (Fast, Slow), Maximum Retention, Maximum Hold Reset, AC Output
-Test range: 3 ranges (30 – 70 dB,60 – 100 dB,90 – 130 dB)
-Degree of solution analysis: 0.1 dB
-Fine, in fact, grade: Time weighting and frequency weighting comply with IEC 651 type 1, calibrating the input signal at 94 dB
(31.5Hz to 8 kHz), the accuracy of a weighting is specified as follows:
31.5Hz-± 1.5 dB, 63Hz-± 1.5 dB, 125Hz-± 1 dB, 250Hz-± 1 dB, 500Hz-± 1 dB,
1 kHz-± 1 dB,2 kHz-± 1 dB, 4 kHz-± 1 dB, 8 kHz – + 1.5 dB to -3 dB
-Frequency weighting work: A&C characteristics. / A weighting: The feature is simulated as a “Human Ear Listing” response. Typical, if you are measuring the ambient sound level, always select A weighting. / C-weighting: the characteristic is close to the “flat” answer. Typical, it is suitable for checking the noise of machinery (Q.C. check) and knowing the sound pressure level of the tested equipment.
– Test frequency range: 31.5Hz to 8,000Hz
-School positive device: B & K (Bruel & kjaer), multifunction acoustic calibrator, model: 4226
-Microphone Types: Electric
Condenser Microphone-Microphone Size: Standard 1/2 Inch
Size-Range Selection: 30 to 70 dB,60 to 100 dB,90 to 130 dB,40 dB at each step, with an upper and lower range indicating-Heavy
Duty (Fast/Slow): Fast – t = 200 ms, Slow – t = 500 ms,
* The “Fast” range simulates the response time weighting of the human ear.
The “slow” range is easy to get the average values of the vibration sound level.
* The “fast” and “slow” time weighting range is designed for IEC 651 Type 2
requirements-Correction methods: Built-in external calibration VR, easy to calibrate at the 94 dB level with screwdriver.
Internal oscillation system, 1 KHz sine wave generator
-Output Signal: AC-AC output 0.4 Vrms corresponding to each range step
-Output Terminal: A 3.5 telephone output terminal is provided for connection with analyzer, level recorder, tape recorder
General specifications:
-Use power: DC 9V battery x 2 pcs. Or equivalent, resistant or alkaline type.
-Current consumption: Approx. DC 17mA.
-Ambient temperature operation: 0 to 50-Operating
humidity: Less than 80% RH-Dimensions
: 260 x 87 x 36mm-Weight
quantity: 450g
