Description:
This portable CH4 methane gas detector is a professional safety instrument for methane leakage and explosion risk early warning. Methane is the primary component of natural gas, coal mine gas and biogas, which widely exists in underground coal mine, biogas generating station, sewage treatment plant and urban gas pipeline. When methane accumulates to explosive concentration in enclosed area, it will cause serious fire and explosion accidents. This detector adopts high‑stability catalytic combustion sensor, featuring fast response, low zero drift and stable measurement performance. It can continuously collect and display real‑time CH4 concentration data of ambient air. Once detection value reaches preset alarm threshold, sound‑light dual alarm will trigger, reminding field operators to cut off gas source, enhance ventilation and locate leakage sources timely. Adopting ergonomic lightweight handheld housing, the device adapts to long‑time field patrol and confined space entry inspection. Adjustable alarm threshold and low power consumption meet daily safety inspection, equipment leak detection and emergency detection requirements for coal mines, biogas plants and gas pipeline overhaul sites.
Features:
Semiconductor technology of ultra low power 32 bit microprocessor, 24 bit ADC acquisition chip, so with the high accuracy.
2.4 inch IPS industrial grade color screen.
Support English language menu.
The gas concentration unit support for the ppm, mg/m3, %LEL, %vol.
With the inner pump and the suction strength is adjustable in different level.
Explosion proof grade of Ex ia IIC T4 Ga.

Function:
Inspect the gas concentration and alarm when it up to the preset alarm level.
With auto-test and data recover function.
One-key operation to restore to factory default setting.
Temperature and pressure compensation function.
Adjustable two stage audible-visual alarm threshold value.
Powered by rechargeable lithium battery with big capacity.
Working under the micro negative pressure is available.
Overload protection, over charge protection, anti static interference, anti magnetic interference, etc.
Technical Specification:
| Gas type | CH4 Methane |
| Working principle | Infrared sensor for CH4. |
| Measuring range | 0-5000ppm、10000ppm、5%vol、50%vol、100%Vol、100%LEL or customized |
| Resolution | 0.01ppm 0.1%vol 0.01%lel or customized |
| Precision | ≤±3%F.S |
| Sampling method | Pump-suction sampling, flow rate of 100~1000mL/min. (Adjustable) |
| Data logger function | About 100,000 group of data capacity. |
| Response time | ≤20s/10s |
| Recovery time | ≤20s |
| Repeatability | ≤±1% |
| Linearity | ≤±1% |
| Zero drift | ≤±1%(F.S/year) |
| Display | Gas type, concentration unit, value, Time, Temperature, Humidity, pump and battery status |
| Concentration unit | %vol, %lel, ppm, mg/m3 |
| Working environment | Working temperature: -30~60 degree;
Working humidity: 0~95%RH (non-condensing); Working pressure: -30Kpa~100Kpa. |
| Explosion-proof Grade | Ex ia IIC T4 Ga |
| Protection grade | IP65 |
| Alarm mode | Audible-visual-vibration alarm |
| Dimension | 180m’m |
| Weight | 500g |
| Accessory | Box, Instruction, USB charger, Data line, Calibration cap, CD |
Remark: If you need gas or measuring range not listed on the above, pls send us your details requirments for further discussion.
Applications:
- Underground coal mine and gas monitoring site
- Biogas station and biogas power generation workshop
- Sewage treatment plant anaerobic reaction zone
- Urban natural gas pipeline maintenance site
- Landfill gas monitoring area
- Laboratory methane‑related experimental site
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.

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





