OC-905 Portable pump-suction H2S hydrogen sulfide gas detector, handheld toxic gas monitor with built-in pump, sound light alarm, used for sewage treatment plant, oil gas industry and confined space safety inspection.
Description
OC-905 Portable pump-suctionH2S hydrogen sulfidegas detector is a professional handheld toxic gas detection instrument equipped with internal sampling pump. The built-in pump actively extracts ambient gas into the sensor chamber, achieving fast sampling and rapid response, which performs well for sampling in confined space and remote detection points. Equipped with high-precision hydrogen sulfide sensor, the device can continuously and stably measure H2S concentration. Real-time readings are clearly presented on LCD screen. Once gas concentration exceeds user-defined alarm value, the unit activates sound and light reminders to warn operators of hydrogen sulfide poisoning hazards in time. Ergonomic lightweight handheld body is easy to carry. Powered by rechargeable lithium battery, it supports long-hour continuous field inspection. This H2S detector is widely used in sewage treatment stations, oil & gas fields, refineries, sewers, landfill sites and tunnel engineering. It is an essential safety testing instrument for preventing hydrogen sulfide toxic gas risks at industrial sites.
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
Technical Parameter:
| Gas type | H2S hydrogen sulfide |
| Working principle | According to the gas |
| Measuring range | 0-10ppm、50ppm、100ppm、200ppm、0-500ppm、1000ppm、2000ppm、5000ppm、10000ppm or Customized |
| Resolution | 0.1ppm 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
Sewage treatment plant gas leakage patrol
Oil & gas well, pipeline and refinery inspection
Sewer, confined space operation gas test
Landfill and biogas station environment monitoring
Mining and tunnel construction site detection
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