OC‑901 portable O2 (Oxygen) and NO2 (Nitrogen Dioxide) gas detector is an industrial‑grade portable multi‑gas monitoring instrument. It is equipped with original imported electrochemical sensors for oxygen and nitrogen dioxide. Built‑in pump‑suction sampling realizes fast gas absorption and rapid response, which can accurately measure oxygen level and toxic NO₂ concentration at the same time.
Nitrogen dioxide is highly toxic irritant gas, commonly generated in nitric acid production, boiler flue gas, diesel exhaust and industrial combustion processes. Insufficient or excessive oxygen also brings huge safety risks for on‑site operators. This instrument is widely used for tunnel and subway construction, thermal power plant flue gas inspection, nitric acid workshop, metallurgy pickling workshop, confined‑space operation and environmental emergency spot‑check.
The device is fitted with a 2.4‑inch color display, supporting free switch between English and Chinese operating menu. Once gas concentration exceeds alarm threshold, voice, audible‑visual and vibration triple alarm will be activated to remind site personnel of potential hazards.
Built‑in 3.7V 4000mAh rechargeable lithium battery provides continuous working time more than 10 hours. Back clip design allows easy wearing during field inspection. IP65 protection and Ex ib IIB T3 explosion‑proof rating make it capable of complex and harsh industrial environment. Alarm data storage function supports historical record review. Aluminum alloy carry box is supplied for convenient transportation and storage.
OC‑901 supports customized 1‑4 sensor channels. It can detect O2 and NO2 simultaneously, and also supports adding H2S, CO, TVOC and other gas sensors for combined multi‑gas measurement.
Core Features
- Original imported electrochemical O2 and NO2 sensor, high testing precision & strong anti-interference ability
- Built-in suction pump design, fast sampling speed, realize remote gas extraction detection
- Support customized 1~4 gas sensors, can match O2 and NO2 with other toxic/combustible gases freely
- 2.4-inch color LCD screen, Chinese & English bilingual menu switch freely
- Multi-mode alarm: sound + flash + vibration + voice alarm, alarm loudness ≥75dB
- Equipped with back clip structure, portable design for field staff real-time wearing detection
- 4000mAh large-capacity lithium rechargeable battery, continuous working time over 10 hours
- Complete alarm data storage function, historical O2 and NO2 concentration & alarm records are reviewable
Technical Parameter:
| Gas type | O2 (Oxygen) NO2 (Nitrogen Dioxide) |
| Sensor Type | Electrochemical sensor |
| Sensor life | 2~3 years |
| Measuring range | O2: 0~30%vol, NO2: 0~50ppm 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.
Application Scenarios
- Tunnel & subway construction, monitor diesel exhaust NO₂ and oxygen deficiency risk
- Thermal power plant boiler flue gas and denitrification system inspection
- Nitric acid manufacturing workshop NO₂ leakage safety monitoring
- Metallurgy pickling workshop toxic gas on‑site patrol
- Confined‑space operation oxygen & NO₂ hazard detection
- Environmental emergency response for nitrogen dioxide pollution spot‑check
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.
