Description:
- H2S and NH3 adopt separated high-selectivity independent electrochemical sensors, effectively reduce cross interference between hydrogen sulfide and ammonia, detect toxic & irritant malodorous gas from sewage sludge, livestock manure and kitchen waste fermentation;
- TVOC uses high-sensitivity PID photoionization sensor, precisely measure total volatile organic pollutants produced by waste degradation, sewage chemical volatilization and organic waste decomposition.
This detector supports dual sampling modes: standard diffusion passive sampling and optional 1L/min pump suction active sampling, suitable for deep septic tanks, underground sewage wells, closed breeding houses and waste transfer station internal gas extraction. Built-in stainless steel anti-corrosion filter screen blocks corrosive mist, manure dust and oil mist to protect internal sensors. LCD screen synchronously displays real-time concentration, gas name and over-limit alarm status of three gases.
Equipped with Ex ib IIB T3 explosion-proof certification and IP65 dustproof & waterproof grade, triple sound-light-vibration over-limit alarm, stores up to 9999 groups alarm records. Wide working temperature -40℃~70℃, 100 hours long standby without pump. Widely applied to livestock breeding farms, sewage treatment plants, septic tanks, waste transfer stations, organic waste disposal workshops and environmental law enforcement malodor gas sampling inspection.
Features:
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- Detects 1–5 gases simultaneously
- Compatible with electrochemical, NDIR, PID, and semiconductor sensors
- Flexible gas configuration for different detection environments
- Pump suction or diffusion sampling mode (optional)
- LCD display showing gas concentration, gas type, and alarm status
- High-precision imported sensors for accurate measurement
- Built-in self calibration and zero calibration functions
- Temperature and pressure compensation for reliable readings
- Two-level alarm system: sound, light, and vibration
- Adjustable alarm set points
- One-key factory reset function
- Large capacity rechargeable lithium polymer battery
- Durable PC + TPE housing: anti-slip, waterproof, dustproof, explosion-proof
Stainless steel filter for better gas flow and sensor protection

Technical Specification:
| Gas Detected | H2S, NH3, TVOC; Customized by customers | ||
| Detection principle | H2S & NH3: Electrochemical Sensor; TVOC: PID Sensor
Catalytic combustion、Electrochemistry、NDIR、PID, etc Customized by customers |
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| Sampling Method | Diffusion type or Pump suction(1L/min) | ||
| Measure Range | H2S: 0~100ppm, NH3: 0~100ppm, TVOC: 0~10ppm; As gas type | ||
| Resolution | 1%LEL、0.1%VOL、1PPM、0.1PPM | ||
| 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 |
Remark: If you need gas or measuring range not listed on the above, pls send us your details requirments for further discussion.
Applications:
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- Large livestock & poultry breeding farms, monitor H2S toxic gas, irritant NH3 and organic volatile TVOC inside breeding houses
- Municipal sewage treatment plant, septic tank, sludge tank comprehensive malodorous gas three-index safety patrol
- Waste transfer station, kitchen waste & organic waste disposal workshop fermented waste gas monitoring
- Underground sewage well, pipeline, confined space pre-operation toxic and organic gas safety inspection
- Environmental protection law enforcement farm and sewage plant malodor & VOC random sampling inspection
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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






