HS5660A type precision pulse sound level meterDetailed product description：

One Application scope and characteristics:
The HS5660A precision pulse sound level meter is a portable acoustic measuring instrument with dual display of digital and pointer, graded measurement, and pulse characteristics that can accurately measure impact sound and short duration noise. It can be combined with the HS5721 1/1 octave band filter or the HS5731 1/3 octave band filter to form a convenient portable spectrum analyzer. It can be used to measure and analyze environmental noise, machine, vehicle, motor noise, etc. It can also be used for measurements in building acoustics, acoustics, etc. Especially its pulse characteristics can accurately measure impact sound and short duration noise, such as gun sound, stamping machine sound, explosion sound, typewriter and teleprinter noise. It also meets the Level 1 requirements of the JJG188-2002 Sound Level Meter Calibration Regulations and IEC61627 Sound Level Meter standards in terms of instrument performance.

II Technical parameters and functions:
1. Sound level measurement range: (with 2 × 10-5Pa as reference)
30—138dB（A）
40—138dB（C）
45-138dB (linear)
2. Frequency range: 10Hz to 20kHz;
3. Frequency weighting: A, C, and linear;
4. Detection characteristics: true effective value and peak value;
5. Time weighting: F (fast), S (slow), I (pulse). Maximum value maintenance;
6. Overload indication: Full load+10 ± 0.5dB;
7. Power supply: 4 1.5VLR20 high-energy batteries, using AC accessories, can be directly measured with 220V mains power;
8. It contains a 1000Hz sine correction signal, which can be used to calibrate the sensitivity of the local machine and the level recorder used in conjunction with it;
9. It has AC and DC output terminals and can be used in conjunction with filters and recorders.

III Others:
1. Choose accessories: HS6020 calibrator, extension cable (10m/15m/30m) tripod, dedicated AC accessories;
2. Size: 290mm × 106mm × 65mm;
3. Basic Configuration: Host, Carrying Case, Wind Cover, Clock Driver