Product Description

Lutron SL-4022 Sound Level Meter

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Features Lutron SL-4022 Sound Level Meter

The frequency weighting and time weighting comply with IEC 61672 Class 1
Large LCD display, easy to read
A&C weighting network according to standard
FAST & SLOW dynamic characteristic mode
AC output for system expansion
Build in adj. VR, available for easy calibration
Condenser microphone for high accuracy & long term stability
Build max. hold down the reset button
max. Hold function to store maximum value on display
Warning indicator for over and under load
LCD display for low power consumption & clear reading even in bright ambient light conditions
Using durable and long-lasting components, including a strong and lightweight ABS plastic casing
Compact and heavy duty housing case
Low battery indicator

Specifications Lutron SL-4022 Sound Level Meter

Display	1 8 mm (0.7″) LCD (Liquid Crystal Display), 3 1/2 digits
Functions	dB (A & C frequency weighted), time weighted (Fast, Slow), Max. hold on, Max. hold reset, AC output
Measurement Range	3 ranges (30 – 70 dB, 60 – 100 dB, 90 – 130 dB )
Resolution	0.1 dB
Accuracy	The frequency weighting meets IEC 61672 Class 1, calibrating the input signal at 94 dB the frequency weighting accuracy is specified as follows: 31.5 Hz : ± 2.0 dB, 63 Hz : ± 1.5 dB, 125 Hz : ± 1.5 dB, 250 Hz : ± 1.4 dB, 500 Hz : ± 1.4 dB, 1 KHz : ± 1.1 dB, 2 KHz : ±1.6 dB, 4 KHz : ±1.6 dB, 8 KHz : +2.1 dB to -3.1 dB
Frequency Weighting Network	* Characteristics A & C * Weighting – Characteristics are simulated in response to “Human Ear Listing”. Usually, when measuring environmental noise levels, always select the A weighting. * C-weighted – Characteristics approximate a “FLAT” response. Typical, suitable for checking engine noise (Q.C. check) & knowing the sound pressure level of the equipment under test.
Frequency	31.5 Hz to 16 KHz. * Accuracy tested in the range of 31.5 Hz to 8 KHz
Calibrator	B & K (Bruel & kjaer), multifunction acoustic calibrator, model: 4226
Microphone type	Electric condenser microphone
Microphone Size	standard 1/2 inch size
Range Selector	30 to 70 dB, 60 to 100 dB, 90 to 130 dB, 40 dB at each step, with over & under range indication
Fast & Slow Time Weighting (F & S )	Fast – t= 200 ms, Slow – t = 500 ms, * “Fast” range simulated human ear response time weight
The “slow” range is easy to get an average value of sound vibration level	The “Fast” & “Slow” time weighting ranges are designed for IEC 61672 Class 1 requirements
Output Signal	AC output – AC 750 mVrms per step of range
Calibration	* Build in external calibration VR, easily calibrated at 94 dB level by screwdriver * Internal oscillation system, 1 KHz sine wave generator
Output Terminal	3.5mm diameter. telephone output terminals are provided for connection with analyzers, level recorders, tape recorders
Operating Temperature	0 to 50 (32 to 122). ℃ ℃℉ ℉
Operating Humidity	Less than 80% RH
Power Supply	Battery DC 9V x 2 PC, 006P, MN1604 ( PP3 ) or equivalent, heavy duty or alkaline type
Power Consumption	Approx. DC 17 mA
Dimensions	260 x 87 x 36 mm ( 10.2 x 3.4 x 1.4 inches )
Weight	450 g/0.99 lb