HY104A Sound Level Meter

HY104A Type 1 sound level meter, performance HY104A type 2 sound level meter is a handheld instrument type, in line with the latest national standard GB / T 3785.1-2010 "electroacoustic sound level meters - Part 1: Specification," and international standard IEC 61672-1: 2002 the Tier 2 X class sound level requirements, which apply to mechanical and electrical products noise, environmental noise, traffic noise, workplace noise field measurements. 2, the main technical parameters and performance 2.1, microphone:. Ф12.7mm (1/2 ") pre-polarized condenser microphone 2 2.2 test frequency range:. 10Hz-20kHz 2.3, frequency weighting: A weighting, C count right 2.4, measuring range:. 30dB (A) -130dB (A), 40dB (C) -130dB (C), 2.5, range control: manual selection, three-speed, linear range 60dB 2.6, measuring range: 30 dB ~ 90 dB; 50 dB ~ 110 dB; 70 dB ~ 130dB 2.7, precision instrument: the new verification procedures National JJG188-2002 "sound level" requirements, performance to GB / T3785 requirements and level of IEC61672 2 2.8. Time weighting: fast (F) 2.9, time setting: Manual 2.10, the main display: LED display, showing Lp or Lmax * 2.11, power output: output jack with 3.5 mm dual-channel headphone jack, Minimum load impedance 10 kΩ DC output:. 15 mV / dB, the output voltage level independent of range, in the entire measurement range of 525 mV ~ 1950 mV, (i.e. corresponding to the upper limit of the measuring range of 130 dB at 1950 mV, the lower limit of 35 When dB to 525 mV) AC line voltage:. 2.5 V rms (corresponding to the upper limit for each file) * 2.12, Power: Section 4 R6 batteries, under reference environment of continuous work 18h 2.13, Dimensions: length × width × thickness 256 mm × 74mm × 25 mm 2.14, weight:. 500g 2.15, operating temperature range:.. 0 ℃ ~ 40 ℃ 3, the basic configuration: The host (with microphone) 1, section 4 R6 batteries, wind shield 1 only, a dust cover, a screwdriver, a leather carrying sleeve, output plug 1, Manual 1, product certification 1 4 options: (1) Calibrators: HY603 acoustic calibrator 2: 1090 yuan / only (2) Tripod: Large: 520 yuan / month, medium: 400 yuan / month, trumpet: 320 yuan / month (3) External power supply:. HY9214 (output 5V) 80 yuan / Taiwan.