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. 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.
Description:
OC‑901 portable CO₂ & NO₂ gas detector is high‑precision industrial flue gas and toxic gas monitoring instrument. CO₂ is measured by original imported NDIR sensor, NO₂ is detected by high‑precision electrochemical sensor. Built‑in pump‑suction sampling achieves fast response for carbon dioxide and nitrogen dioxide concentration testing. Nitrogen dioxide is highly toxic irritant gas produced by combustion, nitric acid manufacturing and diesel exhaust. This instrument is widely used in tunnel construction, thermal power plant, nitric acid workshop, chemical plant and environmental emergency site.
Equipped with a 2.4‑inch colorful display, English‑Chinese switchable operating menu. Voice, audible‑visual and vibration triple alarm triggers immediately once CO2 or NO2 exceeds safety threshold to remind field operators.
Built‑in 3.7V 4000mAh rechargeable lithium battery supports more than 10 hours continuous operation. Back clip for convenient carrying. IP65 protection grade and Ex ib IIB T3 explosion‑proof rating adapt to harsh industrial environment. Alarm data storage supports historical data review. Aluminum alloy carry box included for transport and storage.
Customizable for 1‑4 gas sensors, can detect CO2 & NO2 simultaneously, also support combined detection with H2S, CO, O2 and combustible gas.

Features:
- Built-in pump suction sampling for faster detection
- Supports 1–4 gas detection simultaneously
- High-precision imported sensors
- Audible, visual, vibration & voice alarm system
- 2.4-inch color display with real-time data
- Long-lasting 4000mAh rechargeable battery
- Compact and portable clip design
- Durable IP65 protection level
Technical Parameter:
| Gas type | CO2, NO2 |
| Sensor Type | Electrochemical sensor NO2; Infrared sensor for CO2; |
| Sensor life | 2~3 years |
| Measuring range | CO2:0~5000ppm, NO2: 0~20ppm or customized |
| Display Information | Gas types, Concentration value, Concentration unit, Time, Battery status, Alarm status, etc. |
| Display | 2.4 inch colorful screen |
| Alarm Storage | With alarm data storage function, can review the data from the detector.. |
| Sampling mode | Pump-suction sampling (Available for connection with external pump) |
| Operating Language | Chinese or English operating menu is able to be changed freely. |
| Alarm Mode | Audible-visual-vibration alarm, sound≥75dB |
| Power Supply | 3.7V, 4000mAh rechargeable lithium battery, continuous working period over 10 hours. |
| Explosion-proof Grade | Ex ib IIB T3 |
| Protection Grade | IP65 |
| Working Environment | Working Temperature: -20℃~50℃
Working Humidity: 0-95%RH (non-condensing) |
| Body Material | ABS and PC |
| Package | Aluminum alloy box |
| Dimensions | 190*75*47mm |
| Weight | 376g (with charger) |
| Warranty | 1 years |
Remark: If you need gas or measuring range not listed on the above, pls send us your details requirements for further discussion.
Applications:
- Tunnel construction & subway engineering exhaust gas monitoring
- Thermal power plant boiler and flue gas inspection
- Nitric acid production workshop NO₂ leakage detection
- Chemical plant, metallurgy pickling workshop gas monitoring
- Environmental emergency response, industrial waste gas spot inspection
It is ideal for detecting combustible gases, oxygen levels, and toxic gases in confined or hazardous spaces.

Why Choose OC-901 Gas Detector
- ✅ Fast response with pump suction technology
- ✅ Stable performance in harsh environments
- ✅ Flexible gas configuration (1–4 gases)
- ✅ Easy operation with bilingual interface
- ✅ Strong safety protection with multi-alarm system
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




