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.

Product Overview:
OC-850 portable multi gas detector supports customized configuration of 1~5 gas sensors, specially designed for real-time monitoring of CO₂ (Carbon Dioxide) and TVOC (Total Volatile Organic Compounds). The device supports two sampling modes: standard diffusion sampling and optional pump suction sampling. It is equipped with imported high-precision NDIR sensor for CO₂ measurement and PID sensor for TVOC detection. Fitted with LCD display, triple sound-light-vibration alarm system, IP65 protection casing and Ex ib IIB T3 explosion-proof certification, it meets the detection requirements of CO₂ and TVOC in various industrial and indoor environmental scenes.
Features:
- Flexible configuration: Custom 1-5 gas combinations, compatible with NDIR for CO₂ (Carbon Dioxide), PID sensor for TVOC (Total Volatile Organic Compounds) and other sensor modules.
- Dual sampling modes: Standard diffusion sampling; optional pump suction sampling (1L/min) for remote gas extraction.
- Imported industrial-grade sensors, stable measurement, quick response and recovery.
- Clear LCD display: Show gas name, real-time concentration, unit and alarm status simultaneously.
- Triple alarm: Sound, light and vibration reminder once concentration exceeds threshold.
- Stainless steel inlet filter protects sensors from dust and moisture interference.
- Explosion-proof Ex ib IIB T3, IP65 waterproof & dustproof, suitable for harsh industrial sites.
- Large-capacity battery, up to 100 hours standby without pump operation.
- Supports Chinese / English operation interface; multiple unit switching: ppm, %VOL, %LEL, mg/m³.
- Stores up to 9999 groups of alarm records for data review.

Technical Specification:
| Gas Detected | CO₂ (Carbon Dioxide), TVOC (Total Volatile Organic Compounds) | ||
| Detection principle | NDIR Sensor for CO2, PID sensor for TVOC | ||
| Sampling Method | Diffusion type or Pump suction(1L/min) | ||
| Measure Range | CO2: 0~10000ppm, TVOC: 0~10000ppm, Support customized. | ||
| Resolution | CO2: 1ppm, TVOC: 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 |
Applications:
✅ Confined space inspection: Tanks, pipelines, underground tunnels
✅ Indoor air quality testing: Workshop, office, warehouse CO₂ (Carbon Dioxide) & TVOC (Total Volatile Organic Compounds) monitoring
✅ Petrochemical, paint factory, printing industry VOC leakage patrol
✅ Environmental inspection, construction site safety monitoring
✅ Sewage treatment plant, mining, energy industry routine gas safety check
Remark: If you need gas or measuring range not listed on the above, pls send us your details requirments for further discussion.
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
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





