Specifications
| recording function | none |
| PC software | none |
| Storage capacity | none |
| recording interval | none |
| Measurement range | 30~130dBA；35~130dBC |
| resolution | 0.1dB |
| accuracy | + 1.5dB (reference sound pressure standard, 94dB @1kHz) |
| Measurement range | 30~130dB 30~80dB 50~100dB 80~130dB |
| Response Frequency | 31.5Hz~8.5kHz |
| Sampling Frequency | 2 times/second |
| Frequency weighting | A weighted, C weighted |
| time weighted | Fast FAST (time constant of 125 milliseconds); slow SLOw (time constant of 1 second) |
| Analogical characterization display | 2dB/engraving (30~ 130dB gears); 1dB/engraving (other gears) |
| AC signal output | 4Vrms/full scale, output Impedance is about 100Ω |
| DC signal output | 10mV/dB, Output Impedance Approximately 85Ω |
| Working environment | Temperature: 0~ 40C; Humidity: 10~ 80% RH (non-condensing) |
| Storage environment | Temperature: -10~ 60 ℃; Humidity: 10~ 70% RH (non-condensing) |
| Power supply voltage | 2 AA 1.5V alkaline batteries 2 AA 1.2V rechargeable batteries 5V USB |
| Protection Rating | IP40 |
| Dimension | 221*65*30mm |
| Shell material | ABS |
| weight | About 155g (without battery) |
Packing list
host X1, manual X1, certificate X1, warranty card X1
After-sales instructions
Warranty days: 365 days
[Note] For after-sales services outside the Chinese mainland, if the instrument requires repair, the shipping and possible associated taxes shall be borne by the sender. Generation address of the manual: http://en.nbchao.com/p/38353/Specification.html , which is only used by users who purchase commodities from the NBCHAO.