OC-9500 β-Ray Online Dust Monitoring System adopts beta-ray absorption principle, uses Carbon-14 as stable radiation source. Constant flow air sampling traps particulate pollutants on glass fiber filter tape. The equipment calculates dust mass concentration by detecting beta ray energy attenuation, automatically converts data to standard working condition concentration combined with sampling flow, time and environmental factors. Built-in optional meteorological sensors including temperature, humidity, air pressure, wind speed, wind direction and noise. It realizes 24/7 unattended monitoring for fugitive dust emissions in various outdoor industrial sites.
OC-9500 Dust monitoring system with Beta-ray technology

Product Description:
OC-9500 Dust monitoring system with beta ray adopts the working principle of beta ray attenuation to automatically measure and record airborne particulate concentration. The C14 emits a constant source of high-energy electrons (known as beta rays) through a spot of clean filter tape. These beta rays are detected and counted by a sensitive scintillation detector determine a zero reading. The OC-9500 system automatically advances this spot of tape to the sample nozzle, where the vacuum pump will pull the measured and controlled amount of dust-loaded air through the filter tape. Then the dirty spot will be placed back between the beta source and the detector, so causing an attenuation of the beta ray signal, which is used to assure the mass of the particulate matter on the filter tape.
According to the sampling flow, sampling time, filter membrane area and environmental parameters, the working condition concentration and standard condition concentration of particulate matter in ambient air are calculated to realize the automatic monitoring of ambient air particulate matter.
Core Features
Beta-ray method measures dust mass directly, stable 24/7 data without seasonal correction
Supports TSP, PM10, PM2.5 detection with matched particle cutters
Integrated sampling & detection design effectively reduces measuring errors
Built-in DHS heating + temperature & humidity compensation for high-precision testing
Stable dual-channel sampling pump with long service life
Mass data storage, supports USB export & power-off data protection
Remote management: calibration, diagnosis, parameter setting and program upgrading
4G/Ethernet communication, follows HJ-212 protocol with over 99% data transmission rate
Optional linkage with dust suppression devices for automatic over-limit control
IP53 industrial enclosure, stably works in harsh outdoor environments
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 equipment 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
Custom 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.
Application Fields
Construction site real-time fugitive dust online monitoring
Industrial plant unorganized particulate emission supervision
Coal yard, bulk material stockyard dust concentration monitoring
Port & terminal bulk cargo loading-unloading dust detection
Urban road floating dust continuous monitoring
Open pit mine, quarry environmental dust monitoring
Technical Parameters
| Items | Details |
| Monitoring Parameters | Dust (TSP/PM10/PM2.5), temp, humidity, air pressure; optional: wind speed, wind direction, noise |
| Measurement Range | 0~10000 μg/m³ |
| Indication Error | ±8% |
| Indication Repeatability | ≤0.9% |
| Zero Drift | ±0.2% FS |
| Sampling Flow Rate | 16.67 L/min |
| Flow Stability | 24h flow variation ≤±2.2%; average drift ≤±1.1%/24h |
| Clock Error | ±0.31s/24h |
| Display Resolution | 0.1 μg/m³ |
| Standard Membrane Reproducibility | ≤±2% |
| Filter Tape | Glass fiber filter tape |
| Radiation Source | C-14(Carbon 14) |
| Concentration Alarm | Arbitrary threshold setting in full range |
| Temperature | Range: -40℃~70℃, Resolution:0.1℃, Accuracy:±0.5℃ |
| Humidity | Range:0~100%RH, Resolution:0.1%RH, Accuracy:±3%RH |
| Air Pressure | 10~110kPa, Resolution:0.1kPa, Accuracy:±0.5kPa |
| Wind Speed (Optional) | 0~45m/s, Start wind ≥0.5m/s, Resolution 0.1m/s, Accuracy ±0.3m/s |
| Wind Direction (Optional) | 0~359°, Resolution 1°, Accuracy ±1° |
| Noise (Optional) | 30~130dB, Resolution 0.1dB, Accuracy ±0.5dB |
| Power Supply | AC 220V ±5% 50Hz / Optional DC 24V |
| Average Power Consumption | 60W |
| Operating Environment | -30℃ ~ 55℃, ≤100%RH (non-condensing) |
| Protection Class | IP53 |
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