OC‑903 portable multi‑gas detector monitors NH3, H2S and LEL. It features adjustable pump‑suction sampling, 2.4‑inch IPS color screen, data logging and temperature‑pressure compensation. Equipped with two‑stage alarm and CE, RoHS, CNEX, ATEX certifications, fit for farm, confined space and industrial safety check.
Description:
OC-903 professional multi gas monitor is designed for detecting toxic and flammable gases including NH3, H2S and LEL. Equipped with high-sensitivity electrochemical and catalytic combustion sensors, it delivers accurate and stable detection data in complex environments.
Built-in adjustable pump suction ensures fast on-site gas sampling. It supports temperature and pressure compensation, real-time data display, two-stage adjustable alarm threshold, and audible-visual-vibration triple over-limit alarm. With large-capacity data storage and data export function, it facilitates daily inspection and data traceability.
Explosion-proof design with complete certifications, widely used in agricultural farms, poultry houses, sewage plants, landfills and industrial confined space safety monitoring.
Features:
Detect NH3, H2S and LEL combustible gas simultaneously
Built‑in adjustable pump‑suction sampling pump
2.4‑inch IPS industrial color display, English menu
Temperature and pressure compensation for stable measurement
Two‑stage adjustable audible‑visual‑vibration alarm
Large‑capacity data storage, data export via computer software
Certifications: CE, RoHS, CNEX, ATEX
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 specifications:
| Gas type |
NH3, H2S, Ex |
| Working principle |
Catalytic combustion sensor for Ex; Electrochemical sensor for NH3 and H2S |
| Measuring range |
Ex: 0~100%LEL, NH3: 0~100ppm, H2S: 0~100ppm |
| Resolution |
Ex: 0.01%LEL, NH3: 0.01ppm, H2S: 0.01ppm |
| 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 |
%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 |
| Protection grade | IP65 |
| Alarm mode | Audible-visual-vibration alarm |
| Dimension | 180m'm |
| Weight | 500g |
| Accessory | Box, Instruction, USB charger, Data line, Calibration cap, CD |
Applications:
The portable multi gas detector used in the gas safety inspection and alarm for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, metallurgy, mining, fire, environmental protection, etc., where need to inspect the gas concentration of the Combustible gas and Toxic gas.
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
Oceanus