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 equipments 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. Customer 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.

OC-850 portable multi gas detector is a customizable industrial gas safety monitor, supporting flexible configuration of CH₂O (Formaldehyde), TVOC (Total Volatile Organic Compounds), O₃ (Ozone) and 1–5 types of target gases in total.
It is compatible with Electrochemical, NDIR, PID and Semiconductor high-precision sensors to meet diversified gas leakage monitoring demands. Two sampling modes are available: free diffusion sampling and optional pump suction sampling (1L/min flow rate). Equipped with imported industrial-grade sensors, stable and reliable detection data.
Built-in clear LCD display to real-time show gas concentration, gas name and alarm status. Front stainless steel filter effectively blocks dust and moisture, protects internal sensors and ensures smooth airflow for long-term stable detection.
The device supports Chinese/English bilingual menu, stores up to 9999 groups of alarm records, features sound-light-vibration triple alarm. With Ex ib IIB T3 explosion-proof certification and IP65 protection grade, continuous standby up to 100 hours (diffusion mode), widely used in decoration engineering, environmental governance, factory workshops, sewage stations and industrial confined space inspection.

Features:
- Customizable 1–5 gases, precisely monitor CH₂O(Formaldehyde), TVOC, O₃(Ozone); compatible with Electrochemical / NDIR / PID / Semiconductor multiple sensor principles
- Dual sampling modes: standard diffusion sampling, optional pump suction sampling (1L/min), flexible for open area & confined space testing
- Adopt imported industrial high-precision sensors, stable measurement & low drift
- LCD screen real-time display concentration, gas name and alarm status; support PPM, %VOL, %LEL, mg/m³ multiple concentration units
- Stainless steel filter screen effectively blocks dust & impurities, protects internal sensors to extend service life
- Triple alarm: sound + light + vibration, high reminder sensitivity for noisy industrial sites
- Bilingual Chinese & English operating menu; store max 9999 groups alarm data
- Ex ib IIB T3 explosion-proof grade + IP65 waterproof & dustproof; wide working temperature -40℃~70℃, long standby 100h (diffusion mode)
Technical Specification:
| Gas Detected | CH2O Formalin, TVOC, O3 Ozone | ||
| Detection principle | CH2O O3 : Electrochemistry, TVOC: PID | ||
| Sampling Method | Diffusion type or Pump suction(1L/min) | ||
| Measure Range | CH2O:0~100PPM, O3 :0~100PPM, TVOC: 0~1000PPM, Support customized | ||
| Resolution | CH2O:0.01ppm, O3 :0.01ppm, TVOC: 0.1PPM | ||
| Precision | ≤± 3% F.S. | ||
| Data store | 9999 groups alarm information | ||
| Response Time | ≤10S | Recovery Time | ≤10S |
| Repeatability | ≤±1% | Linearity error | ≤±1% |
| Zero shift | ≤±1%(F.S/Y) | Display | LCD screen |
| Operating language | English or Chinese | Gas unit | PPM, %VOL, %LEL |
| Temperature | -40~70℃ | Humidity | 0-95%RH |
| Explosion-Proof | ExiaⅡCT4 | Protection level | IP66 |
| Alarm mode | Sound, light and vibration | Operating time | 100hours(off pump) |
| Dimensions | 205*75*32mm | Weight | 300g |
Our After-sales service:
1. OEM service for LOGO, model, Technical Parameters, Operation manual, etc.
2. Free calibration service and provide calibration methods.
3. One year warranty and lifetime warranty
Applications:
- Indoor environmental testing: decoration renovation site CH₂O formaldehyde & TVOC detection
- Disinfection workshops, water treatment workshops: real-time O₃ ozone leakage monitoring
- Chemical factories, printing & painting workshops: toxic and volatile organic gas monitoring
- Sewage wells, underground pipelines, confined space operation safety inspection
- Municipal environmental law enforcement, industrial waste gas spot sampling inspection
If any inquiry, pls contact us: Email: info@china-oceanus.com
Our address:
No. 2206, Wenhua Chanye Building Block B, No. 77, Shangding Road, Zhengzhou Area, Henan Pilot Free Trade Zone
Email: info@china-oceanus.com
Telephone: +86 0371 60998169
Mobile/Whatsapp: +86 15981942832
Mobile/Whatsapp: +86 13673683950






