Lutron SL-4001 Digital Sound Level Meter

Lutron SL-4001 Digital Sound Level Meter

Features
• Large LCD display, easy to read
• Frequency weighting networks are designed to meet the IEC 651 type 2
• A & C weighting networks are comformity to standards
• Time weighting (FAST & SLOW) dynamic characteristic modes
• AC/DC output for system expansion
• Built-in adj. VR is available for easy calibration
• Condenser microphone for high accuracy & long-term stability
• Max. Hold function for stored the maximum value on dispaly
• Warning indicator for over and under load
• LCD display for low power consumption & clear read-out even in bright ambient light condition
• Used the durable, long-lasting components, including a strong, light weight ABS-plastic housing case
• Small and ligh weight design allow one hand operation
• Low battery indicator
• Standard accessories: instruction manual, calibration screw driver

Specification
Display :18mm (0.7") LCD (Liquid Crystal Display), 3 1/2 digits.
Function :dB (A & C frequency weighting), Time weighting(Fast, Slow), Max. hold, AC & DC output.
Measurement Range :3 ranges, 30 to 130 dB, input signal only.
Resolution :0.1 dB.
Accuracy :Frequency weighting meet IEC 651 type 2, calibrating input signal on 94 dB(31.5 Hz to 8 kHz), then the accuracy of A weighting is specified as following:
31.5 Hz - ± 3 dB, 63 Hz - ± 2 dB, 125 Hz - ± 1.5 dB
250 Hz - ± 1.5 dB, 500 Hz - ± 1.5 dB, 1 kHz - ± 1.5 dB
2 kHz - ± 2 dB, 4 kHz - ± 3 dB, 8 kHz - ± 5 dB
Frequency Weighting Network :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.
Frequency :31.5 Hz to 8,000 Hz.
Calibrator :B & K (Bruel & kjaer), multi-fuction acoustic calibrator, model : 4226.
Microphone :Electric condenser microphone.
Size of microphone :1/2 inch standard size.
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 & 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.
Calibration :* Build in external calibration VR, easy to calibrate by external screw driver.
* Internal oscillation system, 1 KHz sine wave generator.
Output Signal :AC output - AC 0.5 Vrms corresponding to each range step.
DC output - DC 0.3 to 1.3 VDC, 10 mV per dB.
Out put impedance - 600 ohm.
Out terminal :3.5 phone output terminal is provided for connection with analyzer, level recorder, tape recorder.
Operating Temp. :0 to 50 ( 32 to 122 ). ℃ ℃℉ ℉
Operating Humidity :Less than 80% RH
Power Supply :006P DC 9V battery(heavy duty type).
Power Consumption :Approx. DC 6mA.
Dimension :205 x 80 x 35 mm ( 8.1 x 3.2 x 1.4 inch).
Weight :280 g/0.62 LB (including battery).
Standard Accessories :Instruction Manual, Calibration screw driver
Optional Accessories :94 dB Sound Calibrator, Model : SC-941.
94 dB/114 dB Sound Calibrator, Model : SC-942.
Hard carrying case, Model : CA-06.

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