Sound level meter measurement environment distributor Zhuhai is which?

Sound level meter measurement environment distributor Zhuhai is which? Distributed environments on the sound level meter to Zhuhai Chak Instruments. HS6298A type noise statistics analyzer performance: in line with IEC61672-2002 JJG188-2002 2-level requirements, use: for a variety of industrial environmental noise measurement and environmental noise measurement survey. Features: ○ can automatically monitor ambient noise, but also for integrating sound level meters, personal sound exposure meters and the general sound level meter use, ○ There are scores and statistics, a single set of 3000 when the whole group or 24 hours 80 groups. You can access to storage and printing. The entire measurement pause time can check collected. Capable of Leq, LAE, Ln statistical measurements. ○ use of digital detection technology to replace the past, some traditional sound level meter, stability, and reliability are increased. ○ with LCD display, showing clear and intuitive. Dynamic scale display. ○ can be connected via RS-232 interface with the computer or printer, you can display and print output, but also to the ordinary computer for analysis and processing. Three main technical performance 1 microphone: Ф12.7mm (1/2 ") test condenser microphone 2. Frequency range: 20Hz ~ 12.5kHz 3. Frequency weighting: A weighting, C weighting 4. Measuring range: 30dB ~ 130dB 5. The instrument accuracy: comply grade IEC61672 2 or Type GB3785 2 6. Time weighting: fast (F), Slow (S) 7. detector features: Digital True RMS detector, crest factor 3 8. Measuring time setting: 10s, 1min, 5min, 10min, 15min, 20min, 30min, 1h, 8h, 24h 24h whole time, Man (artificial) clock: year, month, day, hour, minute, second automatic operation 9. Automatic measurement function. : Lp, Linst, Leq, LAE, LN (L5, L10, L50, L90, L95), SD, Lmax, Lmin, E, Ld, Ln, Ldn and the instantaneous value of the dynamic bar charts, statistical distribution, 24h distribution, etc. 10. Display: large-screen LCD dynamic, instantaneous sound level meter with analog display 11. Output Interface: AC output, RS-232 interface to an external mini-printer and computer UP40 12. Calibration: Use Type 1 sound level calibrator or pistonphone 13. Power: Internal use LR6 (5 #) alkaline batteries, can work for 24 hours External power 6V50mA 14. Dimensions:.. l × b × h (mm): 23 * 72x30 15. Quality : 300g (with battery) 16. Conditions: -10 ℃ 50 ℃ Customer case: Hengda Real Estate Development Co., Ltd. Chengdu Tong-sheng Automation Equipment Co., Ltd.