Qichen HY114A Sound Level Meter

Qichen HY114A Sound Level MeterPerformance:

The HY114A sound level meter is a handheld instrument that meets the requirements of the national standard GB/T 3785-2010 and the standard IEC 61672:2013 "Sound Level Meter" for Level 2 Class X sound level meters. The preamplifier of the sound level meter is set to be removable, and the microphone can be easily connected to the sound level meter body through an extension cable, keeping the measurer away from the noise source. It is suitable for on-site measurement of mechanical and electrical product noise, environmental noise, traffic noise, workplace noise, etc. It has a digital output interface and can be used as a noise data collector for analysis and processing through PC programs. It can also achieve on-site printing of measurement results.

Qichen HY114A Sound Level MeterMain technical parameters and performance:

• Performance level: GB/T3785 and IEC61672 level 2.
• Measured evaluation quantity: LP (time weighted sound level), Lmax (large time weighted sound level)
• Microphone: HY205 Class 2 engineering measurement microphone, nominal diameter 12.7 mm, free field type frequency response. The nominal sound pressure sensitivity is 50 mV/Pa (nominal sound pressure sensitivity level is -26 dB, reference value is 1 V).
• Microphone: HY205 Class 2 engineering measurement microphone, nominal diameter 12.7 mm, free field type frequency response. The nominal sound pressure sensitivity is 50 mV/Pa (nominal sound pressure sensitivity level is -26 dB, reference value is 1 V).
• Frequency range: 20 Hz to 16 kHz.
• Frequency weighting: A weighting, C weighting.
• Time weighting: F (fast response).
• Measurement range: A-sound level: 30 dB to 130 dB; C-level: 40 dB to 130 dB, divided into three levels:

Low gear: 30 dB to 90 dB; Medium range: 50 dB to 110 dB; High end: 70 dB~130 dB, manually selected.

• Display: 128 × 64 dot matrix liquid crystal display (LCD) with a resolution of 0.1dB, featuring indicators such as overload, under range, and low battery voltage alarms.
• Digital output: The output jack is a 3.5mm dual channel headphone jack, RS232 serial communication port, ASCII code output, modulation rate (baud rate) of 300 Bd (default), 9600 Bd.
• Analog output: The output jack is a 3.5mm dual channel headphone jack with a small load impedance of 10 k Ω.

——DC logarithmic voltage: The output voltage is related to the logarithm of the measured sound pressure, and the output voltage is independent of the level range. The unit sound pressure output voltage is 15 mV/dB. The upper and lower boundaries corresponding to the total range are 1950 mV and 450 mV, respectively.
——AC linear voltage: The output voltage is linearly related to the measured sound pressure, corresponding to the output voltage at the upper boundary of the level range
0.5 V。

• Power supply: 4 R6 type (No. 5) batteries, capable of continuous operation for 16 hours under reference environmental conditions.
• Extension cable: HY7017 extension cable, standard 3m, customizable by users, with a length of up to 50m.
• Dimensions: Length x Width x Thickness 276mm x 74mm x 25mm.
• Weight: 520g.
• Working temperature range: 0 ℃ to 40 ℃.