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Sound level meter SL-4013

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#SL-4013 Sound Level Meter, Separate Probe

Features
* Separate sound probe, easy operation.
* A & C weighting networks meet IEC 61672 class 2.
* 0.5″ standard microphone head.
* Time weighting (Fast & Slow) dynamic characteristic modes.
* AC output for system expansion.
* RS232/USB computer interface.
* Auto range & Manual range selection.
* Available for external calibration adjustment.
* Condenser microphone for high accuracy & long-term stability.
* Memory function to store the Max. & Min. value.
* Hold and MAX. Hold functions.
* Operation key used push button.
* Large LCD display for low power consumption & clear read-out even in bright ambient light condition.
* Using the durable, long-lasting components, including a strong, light weight ABS-plastic housing case.
* Small and light weight design allow one hand operation.

Specification
Display :52 mm x 32 mm LCD (Liquid Crystal Display), 5 digits.
Function :dB (A & C frequency weighting), Time weighting(Fast, Slow), Hold, Memory (max. & min.), Peak hold, AC & RS232 output.
Measurement Range :30 – 130 dB.
Resolution :0.1 dB.
Accuracy (23 ± 5 ℃) :Frequency weighting meet IEC 61672 class 2, calibrating input signal on 94 dB ( 31.5 Hz
to 8 KHz), then the accuracy of frequency weighting is specified as following:
31.5 Hz – ± 3 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
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 :Auto range : 30 to 130 dB.
Manual range : 3 range, 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.
* The “Fast” & “Slow” time weighting range are designed to IEC 61672 class 2 requirement.
Output Signal :* AC output – AC 0.5 Vrms corresponding to each range step. Output impedance – 600 ohm.
* RS232 output.
Output terminal :Terminal 1 : RS232 computer interface terminal.
Terminal 2 : AC output terminal.
* Terminal socket size : 3.5 mm dia. phone socket.
Calibration VR :Build in external calibration VR, easy to calibrate on 94 dB level by screw driver.
Operating Temp. :0 to 50 (32 to 122). ℃ ℃℉ ℉
Operating Humidity :Less than 80% RH.
Power Supply :006P DC 9V battery (Alkaline or heavy duty type).
Power Consumption :Approx. DC 6mA
Dimension :Main instrument :205 x 68 x 29 mm (8.07×2.7×1.1 inch).
Sound probe :170.5 x 24.5 x 19 mm (6.7×1.0x0.7 inch).
Weight :405 g/0.89 LB (including probe).

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