Product introduction JH8HS6298 multifunction noise tester is a pocket of high intelligence noise measuring instrument, it is set to integrating sound level meter, noise statistics analyzer, noise logger, digital recording several instrument functions in one, there are many innovative design and functionality to meet a variety of measurement requirements. Product attributes of the instrument has a 128 × 64 graphics LCD with backlight display, rich content, character tips, operator interface with menu, the user can quickly master the operation. The measurement results can be stored in the instrument for a long time, on-site or through the built-in RS-232C interface using a micro-printer afterwards printed out or sent to the computer. This instrument is compact structure, beautiful shape, multi-function, high degree of automation, can be used for the measurement of environmental noise, also can be used for labor protection, industrial hygiene, and a variety of machines, vehicles, ships, electrical and other industrial noise measurement to use 128 × 64 graphics LCD with backlight display, rich in content, character tips, operator interface with menu, the user can quickly master the operation. The measurement results can be stored in the instrument for a long time, on-site or through the built-in RS-232C interface using a micro-printer afterwards printed out or sent to the computer. The main purpose for the measurement of environmental noise, also can be used for labor protection, industrial hygiene, and a variety of machines, vehicles, ships, electrical and other industrial noise measurement Notes microphone: Φ12.7mm (1/2 ") the Electret test capacitor microphone sensitivity about 25mV/Pa, Frequency range: 20Hz ~ 12.5kHz 2 Measuring range: 30dB to 130dB (A) 35dB to 130dB (C) 35dB to 130dB (Z) Frequency range: 20kHz ~~ 10kHz frequency weighting: A , C, Z-weighted 5 Time weighting: Fast (F), slow (S) 6 detector features: Digital True RMS detector, crest factor 37 range from high, medium and low grades, each stall linear range ≥ 60dB 8 measurement time setting: 10s 1min, 5min, 10min, 15min, 20min, 30min, 1h, 8h, for 24 h. 24h whole time, Man (artificial) clock: year, month, day, hour, minute seconds to run automatically. 9 automatic measurement function: Lp, Leq, LAE, LN (L5, L10, L50, L90, L95), SD, Lmax, Lmin, Ld, Ln, Ldn 10 measurement data is automatically stored: 3000. 11 can collect instantaneous sound level, storage and output to the computer for processing, in the computer field noise measurements LEPN, display and print the results of 12 Display: 128 x 64 dot matrix LCD digital display with analog hands, measurement method, measurement time and clock display backlight function. additional instructions 13 output interface: AC output: 0V ~~ 3V RS-232C interface output 14 power: 4 x LR6 (5 #) high energy alkaline battery, 9V external power supply can also be used (non The standard configuration) 15 Dimensions: l × b × h (mm) 230 × 72 × 30 16 Quality: 400g (with battery) 17 Operating temperature: -10 ° C to 50 ° C, relative humidity of 20% to 90% 18 extends cable (depending on user requirements can be equipped with 5 m, 10 m, 15 m, 20 m, non-standard configuration) Transaction Description 1, Model size determination, payment mode of transport, installation and testing, qualified acceptance