OC‑905 portable CO₂ gas detector is a high‑precision handheld detection device built‑in sampling pump. It accurately measures carbon dioxide concentration on‑site, equipped with clear LCD real‑time data display, sound‑light alarm for over‑threshold value. Compact and lightweight design supports on‑site mobile inspection, widely used for industrial environment safety monitoring.
Description:
OC-905 Portable gas detector designed with the inner pump and the famous brand sensors, with stable performance and high accuracy. Used to detect the single gas concentration for the Combustible gas, Toxic gas, Carbon Dioxide, Oxygen, TVOC, etc. It can directly display the gas concentration data on the screen, the data also could be exported to the computer by USB cable.
For the portable gas detector, it is widely used in petroleum and petrochemical, metallurgy, chemical industry, coking, municipal, biological pharmaceutical, home environmental protection, school laboratory, automobile exhaust, power, ships, sewage treatment and other places that need to detect flammable, explosive, toxic and harmful gases
Function:
Inspect the gas concentration and alarm when it reaches preset alarm level.
High accuracy, good stability and good repeatability, long working life.
One-key operation to restore to factory default setting.
Adjustable two-stage audible-visual alarm threshold value.
Powered by rechargeable lithium battery with big capacity.
The built-in pump, stable flow rate, can be opened or closed;

Feature:
Multi Gas Detection: Supports combustible gas, oxygen (O2), carbon dioxide (CO2), toxic gases and TVOC
Built-in Pump Sampling: Stable flow rate (300ml/min) for fast and accurate detection
High Precision Sensors: Imported sensors with intelligent algorithm and temperature compensation
Audible & Visual Alarm: Dual alarm system with ≥75dB buzzer and LED light
Data Storage & Export: Stores up to 100,000 records, USB data export supported
Explosion-Proof Design: Certified Ex ib IIC T4 Gb for hazardous environments
Long Battery Life: Rechargeable lithium battery, up to 12 hours operation
| Gas type | Carbon Dioxide CO2 |
| Working principle | Infrared sensor |
| Measuring range | 0-2000ppm、5000ppm、50000ppm、20%vol、50%vol、100%Vol or customized |
| Resolution | 0.1ppm 0.1%Vol or customized |
| Concentration unit | %LEL, %Vol, ppb, ppm,mg/m3 |
| Precision | ±≤3%F.S |
| Repeatability | ≤±2% |
| Zero drift | ≤±1%(F.S/year) |
| Sampling mode | Pump-suction sampling (Flow rate of 300ml/minute) |
| Data storage | Can record 100000 group of measuring data |
| Response time | T90≤30s (different gas sensors have different response times) |
| Recovery time | ≤20s |
| Pre-heating time | ≤60s |
| Display | LCD dot matrix display of the Gas type, gas concentration unit, gas concentration data, time, battery status, data storage status; |
| Working temperature | -20℃~50℃(Special requirements need to be customized) |
| Working humidity | 10%-95%RH(non-condensing) |
| Working pressure | 86Kpa~106Kpa |
| Explosion-Proof grade | Ex ib IIC T4 Gb |
| Protection grade | IP54 |
| Alarm mode | Audible, visual. Two-color LED alarm light, sound≥75dB@25cm |
| Shell material | Aluminum alloy metal housing, ABS+PC |
| Power supply | 3.7VDC, 2600mAh,Rechargeable lithium battery DC5V USB charger |
| Charge time | ≤6 hours |
| Working time | ≥12 hours (Normal temperature electrochemical sensor) |
| Power consumption | 0.5W |
| Dimensions | 200.5*64.8*35.5mm (L*W*H) |
| Weight | 0.46KG |
| Accessory | Box, instruction, USB charger , data line |
| Quality standard | GB15322.1-2003,GB3836.1-2010,GB3836.2-2010,GB3836.4-2010,GB12358-2006 |
Application Scenarios
Factory workshop air quality monitoring
Cold storage, agricultural greenhouse environment detection
Underground confined‑space operation inspection
Warehouse, laboratory CO₂ concentration test
Industrial site safety risk assessment
Our Certificate

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
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