SL-4012 SOUND LEVEL METER
Auto range, AC output, Memory
SOUND LEVEL METER
Model : SL-4012 ISO-9001, CE, IEC1010
FEATURES
- Large LCD display, easy to read.
- Frequency weighting networks are designed to meet IEC 61672 class 2.
- Auto range & mamual range.
- A & C weighting networks are conformity to standards.
- Fast & Slow dynamic characteristic modes.
- AC output for system expansion.
- RS232/USB computer interface.
- Build in adj. VR is available for easy calibration.
- Hold & Memory record ( max., min. )
- Condenser microphone for high accuracy & stability.
- Peak Hold function for stored the maximum value.
- Warning indicator for over and under load.
- LCD display for low power consumption & clear readout even in bright ambient light condition.
- Used the durable, long-lasting components, including a strong light weight ABS-plastic housing case.
- Compact and light weight plastic housing.
SPECIFICATIONS | |
Display | 52 mm x 32 mm LCD (Liquid Crystal Display), 5 digits. |
Function | dB (A & C frequency weighting), Time weighting(Fast, Slow), Time weighting ( 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 - ± 3.5 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 |
Frequency Weighting Network | Characteristics of A & C. |
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 type | 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 | 268 x 68 x 29 mm ( 10.6 x 2.7 x 1.1 inch). |
Weight | 295 g/0.65 LB. |
Standard Accessories | Instruction Manual ...............................................1 PC. |
Optional | Sound Calibrator, model : SC-941 ( 94 dB ). SC-942 ( 94dB, 114 dB ). Carrying case : CA-06 Wind shield ball, SB-01 RS232 cable, Model : UPCB-02 USB cable, Model : USB-01 Application software, Model : SW-U801-WIN |