Nanjing Hengsheng HS5633 Digital Sound Level Meter noise meter

Hengsheng Nanjing Nanjing HS5633 HS5633 sound level meter Sound Level Meter Digital Sound Level Meter - Digital Sound Level Meter Features HS5633 Digital Sound Level Meter is the new standard requires the development of a conventional sound level meter with A frequency weighting network, high and low range , overload and under-range indication, maintain measurement, digital display indicating functions, dynamic range, simple operation, easy to use features, performance in line with the new sound level meter standard two requirements. It can be widely used in machinery, vehicles, ships, electrical and other industrial noise measurement and environmental noise measurements for sound field testing factories and enterprises, environmental protection, labor health, transportation, education, research and other departments. The main technical performance: Microphone: 1/2 inch (Ф12.7mm) test electret microphone sensitivity: 30mV / Pa Frequency range: 20Hz ~ 12 500Hz measuring range: 35dB ~ 130dB (A) 35dB ~ 130dB (C) Frequency range: 20Hz ~ 10 000Hz frequency weighting: A, C time weighting: F (fast), detector: LMS RMS, crest factor ≥3 indicator: 2 × 8 character-type LCD, resolution 0.1dB, reading is updated every second twice. Accuracy: comply with GB3785 and IEC61672 standard requirements for two machines. Reference SPL: 94dB Reference incidence direction: Axial microphone maximum hold: the decay rate of not more than 1dB / min Power supply: two AA batteries, can work for more than 30 hours Dimensions: (l × b × h): 170 × 52 × 24mm Weight: 0.15kg Usage preparation before use 1 Read instructions carefully to understand the function and performance considerations. 2 mounted microphone, sound level meter from the instrument after removing the bags in, first remove the sound level meter preamplifier head plastic protective cover, then remove the microphone from a random distribution of microphones plastic bag packaging boxes, carefully fitted to the front amplifier. 3 Replace the battery, take a 9V laminated new battery (generally more than four hours of continuous work), and through the machine box battery deduction connection in prison, the entire line a little bit into the battery, the battery cover flat withholding. 4 Check the battery voltage: the power switch to the OFF position DIP ON, check the monitor no "LOBAT" symbol appears, indicating that the sound level measurements can be carried out, or should replace the batteries loaded. Instrument Co., Ltd. Zhuhai Chak commitment: 1. Product offer telephone inquiry 2. Whether an agency is whether the certificate is a dealer dealer can provide a certificate 3. whether it is a genuine original is then able to provide declarations genuine original can provide declarations 4. Is there a spot spot spot suggest how 5. Quality assurance free year warranty and lifetime maintenance 7. Maintenance 6. how SF or tact courier company on behalf of the province can collect 8. Support Alibaba Alipay transaction