Fixed CLO2 Preprocessing Online Monitoring System
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Model: HNAG800-CLO2
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Detection: CLO2 (Chlorine Dioxide)
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Detection Principle: Electrochemistry
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Detection range: 0-1ppm, 0-10ppm, 0-50ppm, 0-200ppm, 0-400ppm
Product Description
High-Precision CLO2 Preprocessing Online Monitoring System
The HNAG800-CLO2 Preprocessing Online Monitoring System is meticulously engineered for the continuous, real-time detection of highly reactive Chlorine Dioxide (CLO2) gas concentrations and leakages across severe industrial environments. By integrating a high-performance electrochemical sensor with advanced microcontroller technology, this system delivers an exceptionally fast response speed (T90 < 10s), high measurement accuracy (±3% F.S.), and outstanding repeatability. Utilizing an explosion-proof wiring method, the device is fully certified for hazardous locations and integrates seamlessly with user computers, PLCs, DCS, and standard control alarm systems.
Robust Stainless Steel Design & Gas Sampling Mechanism
Encased in a heavy-duty stainless steel cabinet to withstand corrosive ambient conditions, the monitoring system relies on a precision-engineered continuous gas sampling process. The extracted CLO2 gas first passes through a high-efficiency filter to strictly remove dust, particulates, and impurities. A dedicated sampling pump then directs the sample into a precision flowmeter, securely maintaining the incoming gas flow rate between 0.3 and 0.5 L/Min. This regulated pretreatment guarantees that the electrochemical sensor operates under optimal, stable conditions before the target gas is safely exhausted.
Technical Specifications of Chlorine Dioxide Monitor
| Parameter | Technical Specification |
| Monitored Gas |
CLO2 (Chlorine Dioxide) |
| Detection Principle |
Electrochemistry |
| Measurement Ranges |
0-1ppm, 0-10ppm, 0-50ppm, 0-200ppm, 0-400ppm |
| Resolution |
0.01ppm, 0.1ppm, 1ppm |
| Sampling Accuracy |
±3% F.S. |
| Response Time |
T90 < 10s |
| Standard Output Signals |
4-20mA (12-bit precision, 1Km distance), RS485 (MODBUS RTU, 1Km), Passive contact relays (220VAC 3A / 24VDC 3A) |
| Optional Output Signals |
Voltage (0.4-2V, 0-5V, 0-10V), Wireless (GPRS, 4G, WIFI, LORA, ZigBee) |
| Operating Environment |
Temperature: -20 ～ 50℃; Humidity: 0-95%RH |
| Sampling Distance |
Up to 80 meters (Recommended within 20 meters) |
| Power Supply |
220V AC |
Industrial Applications & Flange Installation
This continuous CLO2 monitoring system is an essential safety component deployed widely in water treatment facilities, paper and pulp bleaching plants, medical research, pharmaceutical production workshops, and environmental monitoring stations. The system is designed to support standard pipeline flange installations and wall-mounted setups, ensuring secure, leak-proof sampling directly from exhaust stacks, process pipelines, or ambient storage areas.
Customized Gas Pretreatment Configurations
To accommodate the specific nature of chlorine dioxide gas alongside complex plant conditions, multiple tailored internal configurations are available:
1.Normal to Medium Temperatures: Configurations equipped with PTFE tubing, condensation units, and timed peristaltic drainage pumps, ideal for negative-pressure pipelines and moisture-heavy extraction.
2.High-Temperature & Dusty Environments (400-800°C): Advanced systems integrating vortex flow cooling coils, dual filtration, and automatic time-relay solenoid valves for pipeline reverse-purging to prevent filter clogging.
3.Explosion-Proof Pneumatic Setup: Highly recommended configurations utilizing pneumatic pumps driven by plant compressed air and full stainless-steel pipelines to ensure maximum safety in highly combustible zones.
Frequently Asked Questions (FAQ)
Q: What is the expected service life of the electrochemical CLO2 sensor?
A: The electrochemical CLO2 sensor is a consumable component with a typical operational service life of approximately 1 to 3 years. The actual duration depends heavily on the specific monitoring environment, background gases, and target chlorine dioxide exposure levels.
Q: What routine maintenance does the sampling system require?
A: You must replace the internal filter when the color of its core chip changes, which typically happens every 3 months under standard industrial testing environments. Additionally, if the unit is operating between -20°C and 60°C without an automatic drainage configuration, the water produced by the filter must be manually drained. The sampling air pump generally requires replacement after approximately one year of continuous use.
Q: How are alarm thresholds managed?
A: The standard system configuration features a two-level threshold alarm, with an optional three-level alarm structure available. When triggered, the system can activate on-site sound and light alarms, external ventilation devices via relay switches, remote controllers, and instantly notify computer data acquisition software.
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