OC-HY128 | Professional Noise Test Instruments for Accurate Sound Level Measurement
Multi-function Color Screen Noise Meter | Complete Spectrum Analysis & Long-Term Environmental Noise Monitoring Test Instruments
Large Capacity Storage + Multiple Data Output Ports, One Device Completes Noise Recording, Analysis & Export
Product Description
OC-HY128 is a multi-functional digital sound level meter equipped with a high-definition color screen, belonging to professional environmental test instruments. It can measure weighted sound pressure level, equivalent continuous sound level, sound exposure level, statistical sound level and other noise evaluation parameters.
This device is built with 7 working modes: integral averaging measurement, parallel measurement, statistical analysis, 24-hour continuous monitoring, 1/1 octave analysis, 1/3 octave analysis and indoor noise test. It supports low-frequency A weighting to meet secondary radiation noise testing requirements. With humanized interactive UI, simple operation and stable measurement performance, it is widely used in environmental supervision, factory occupational health inspection, building noise detection and other scenarios.
Core Features
Full digital Class 1 precision professional sound level meter, meets international noise testing standards
Support personal sound exposure measurement & long-term 24h uninterrupted ambient noise monitoring
Optional 1/1 octave & 1/3 octave band spectrum analysis function
Unique low-frequency A-weighting function for secondary radiation noise measurement
Supports power bank power supply, real-time measurement while charging
Optional data recording & Bluetooth wireless data transmission function
2.8-inch high-resolution color OLCD screen, clear data display under strong light
Multiple data export ports, large-capacity TF card for massive data storage

Optional Type:
Type No.: | Class level | Integral average | Statistical analytical | Integral parallel | 24h Test | Indoor Noise | 1/1 OCT | 1/3 OCT |
HY128-Basic | 1 | √ | √ | √ | ||||
HY128-1 | 1 | √ | √ | √ | √ | |||
HY128-2 | 1 | √ | √ | √ | √ | √ | ||
HY128-3 | 1 | √ | √ | √ | √ | √ | √ | |
HY128-4 | 1 | √ | √ | √ | √ | √ | √ | √ |
HY128-5 | 1 | √ | √ |
Technical Parameter:
Main measurement indicators: | LXY(X=A、C or Z, Y=F、S or I), LXYmax, LXYmin, LCpeak, 1sLeq, Leq, LE, E, D, Laeq,8hn, LN(N=1~99, choose 5), SD, Lh, Ld, Le, Ln, Ldn, Lden, LAv, TWA, LeqC-A, etc. |
Frequency range: | 10Hz~20kHz (Class1) |
Time weighting: | F,S,I |
Frequency weighting: | A,C,Z |
Low-frequency | 16Hz~200Hz(for secondary radiation noise measurement) |
Detection range: | A: 20dB~144dB, C: 30dB~144dB, Z: 40dB~144dB, C-weighted peak sound level 60dB~147dB |
Display: | 2.8inch OLCD color display screen, Resolution 240*320 |
Octave filter: | 1/1 Octave filter: 8 Hz, 16 Hz, 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4kHz, 8 kHz and 16 kHz. |
1/3 Octave filter: 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz,20 Hz, 25 Hz,31.5 Hz,40 Hz,50 Hz,63 Hz,80Hz,100Hz,125 Hz, 160 Hz, 200Hz, 250 Hz, 315 Hz, 400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.6 kHz, 2 kHz, 2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz, 8 kHz, 10 kHz, 12.5 kHz, 16 kHz and 20 kHz | |
Analog output: | 1) The output jack is a 3.5mm dual-channel headphone jack. 2)DC output: The output voltage is about 15mV/dB, and the range is 300mV~2160mV. 3)AC output: The output has a linear relationship with the measured signal, and the root mean square value of the maximum AC output voltage does not exceed 3V. |
Storage | 32G TF card, Max 64G |
Data output | DB9 male connector (pin type) is used for printing, and USB B type socket is used for data communication |
Power supply | 3.7v 6000mAh Li-battery, or power bank for 24h monitoring |
Size/Weight | 250*78*30mm/360g |
Working temperature | -20℃~50℃ |

Application Scenarios
Municipal environmental protection department: routine noise supervision, road & community noise inspection, environmental law enforcement testing
Industrial factories: workshop noise detection, occupational health noise exposure assessment, factory noise governance verification
Construction industry: construction site noise monitoring, building acoustic insulation performance test
Laboratory & research institute: acoustic research, equipment secondary radiation noise test, spectral analysis experiment
Transportation, airport, railway station: long-term fixed noise continuous monitoring
Indoor decoration, public places: indoor ambient noise evaluation

Company Profile
We Henan Oceanus is located in Henan, a land with a long history and profound cultural heritage, has been dedicated to the research, development, production, and sales of Gas detection system and Environment equipment since its establishment. With exquisite technology and outstanding quality, we have won widespread recognition in the global marketing.

01
Business areas
As a leader in the field of Gas detector and Air quality monitor system, we Henan Oceanus will be continued to expand its business scope and provide customers around the world with customizable Air quality monitor system of various types and specifications.
02
Values and ideas
Our company upholds the core values of integrity and quality service, focusing more on friendship with our customers. We always adhere to integrity management, customer-centered, and provide a full range of pre-sales, sales, and after-sales services to ensure that customers can be worry-free when using our products.
03
Global Service Network
We have a comprehensive global service network, offering timely, professional pre-sales consultation, after-sales service, and technical support for overseas users. Regardless of where users are located, they can enjoy our attentive and thoughtful service.
04
Custom Service
With excellent products and services, Henan Oceanus Gas detector and Air quality monitor system have been exported to more than 100 countries around the world and have won widespread praise.

Every unit is assembled on our own production line, then put through our in-house quality control before it ships. Each instrument undergoes a full inspection, a burn-in aging test and precision calibration, and is finally standardized against reference gases to verify accuracy at the point of delivery. Nothing leaves our factory untested. We also welcome OEM and ODM projects, and every product is backed by our warranty support. Controlling the process from assembly to final calibration is how we keep quality consistent and respond quickly to custom requirements.
How To Cooperate With Us?
We look forward to collaborating with more overseas gas detector and air quality monitor distributors and partners to advance the development and application of gas detection and air quality monitoring technologies .
Our Address
No. 923, Floor 9, Unit 2, NO.78, Shangding Road, Zhengzhou, China.
Phone Number
+86 15981942832
Contact:Oceanus Team
Mobile/WhatsApp:+86 15981942832
Mobile/WhatsApp:+86 13673683950
E-mail:info@china-oceanus.com
Add:No.923, Floor 9, Unit 2, NO.78, Shangding Road, Zhengzhou, China