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RHCK350LEx type of Oxygen Content Online Analysis System
The RHCK350LEx type of oxygen content online analysis system is used for analyzing oxygen content in gas pipelines. The online analysis system consists of a sampling system, a pretreatment system, a calibration system, an explosion-proof oxygen gas analyzer, a sub-cabinet, and its public utilities etc.
Keywords:
explosion-proof oxygen analyzer system
Category:
Coal chemical industry
Hotline:
产品概述
RHCK350LEx型氧含量在线分析系统由样气取样管线、预处理系统、防爆氧气体分析仪及标校 单元组成。预处理系统和防爆氧气体分析仪安装在机柜内。
The RHCK350LEx online oxygen content analysis system consists of a sample-gas sampling pipeline, a pretreatment system, an explosion-proof oxygen gas analyzer, and a calibration unit. The pretreatment system and the explosion-proof oxygen gas analyzer are installed inside the cabinet.
The explosion-proof oxygen analyzer utilizes a laser sensor. This instrument features stable performance, high precision, fast response, and a high degree of intelligence, so as to achieve continuous analysis of concentration levels; while converting the concentration signal into a standard 4–20mA current signal output. Via combining a laser sensor with micro-controller control technology, the instrument offers high measurement accuracy and ease of operation.
This instrument adopts a large 320×240 dot matrix LCD display with high brightness and without viewing angle distortion, making it intuitive and eye-catching. When unattended, it can automatically record oxygen content values at the set intervals, storing up to 3,200 data points. The touch-button interface offers Chinese and English menu-operations that are easy to understand, simple, and reliable. The instrument is equipped with several external ports of which include the output of the control contact-points, the output of standard 4–20mA current, and a self-alarm (buzzer) due to exceeding limits, etc. Optional features include printing output, online support, and over-limit control and alarm functions etc.
Performance Indices
1. Measuring range: O2: 0.01~25.00% (Customizable ranges are available upon user requirement);
2. Repeatability: ≤±1% F.S.;
3. Stability: Zero drift ≤±1% F.S./7d;
4. Full-range drift: ≤±1% F.S./7d;
5. Sample-gas flow rate: 500±10ml/min;
6. Response time: T90≤10S;
7. Sample-gas pressure: -10Kpa~+15Kpa; resolution: 0.01%;
8. Control output: Relay contact-point output can be randomly configurable; contact-point capacity: 110VAC, 1A/24VDC, 2A;
9. Analog output: 4-20mA, with RS232 communication interface;
10. Analyzer dimensions: 426 (W) x 176 (H) x 372 (D), installation dimensions: 426 (W) x 176 (H);
11. Explosion-proof rating: ExdⅡCT6;
12. Working environment: Operating temperature: -10℃~+50℃;
13. Operating humidity: ≤90%RH;
14. Working power supply: 220V±10% 50Hz; weight: approx. 2.6Kg.
Working Conditions
Operating conditions:
1. Dust content in sample gas: <50g/Nm3;
2. Medium temperature: 0~80℃;
3. Medium pressure: 0.3Mpa, requires decompression before entering the instrument;
4. Moisture content: Suitable for the saturated water vapor (heat-tracing pipeline is required for sampling).
Climatic conditions:
1.Ambient temperature: -10~50℃;
2. Environmental relative humidity: <90%RH;
3. Atmospheric pressure: 70~106KPa;
4. Sunlight exposure: No direct exposure.
Environmental conditions:
1. There is no obvious vibration at the installation site; there is no strong electromagnetic interference;
2. Configured with a dedicated ground wire (the earthing resistance is less than 2Ω);
3. No volatile, corrosive and explosive gases;
4. Good ventilation.
Product Features
1. It is equipped with a domestic first-class sampling pretreatment system so that the entire system has long maintenance cycle, small maintenance workload, simple and convenient operation as well as high reliability.
2. Utilize analysis-cabinet type (or analysis-room type) structure to accomplish the “turnkey engineering design”, thus simplify installation and trial running, and enhance system reliability.
3. It adopts dry technological process, pulse cleaning, electric heat-tracing and other technologies; and it possesses feeding sample gas automatically, continuous operation as well as control interlocking functions.
4. It adopts high-performance diaphragm air-extracting pump, which features strong anti-corrosion ability, large air extracting capacity, high temperature resistance, high reliability, long service life and low maintenance workload.
5. It is not afraid of moisture, dust, and corrosion; it has little impact from changes in ambient temperature, and is not afraid of vibration effects; it works stably, does not need frequent calibration, and has a service life of more than five years.
6. System response time is short: The system responds quickly, each probe is equipped with a membrane sampling pump, the system response time will be less than 10 seconds when the length of sampling pipeline is less than 10 meters.
7. The operating costs is low, low maintenance workload, and the long-term working losses is almost zero.
8. It adopts an internationally fashionable standard cabinet with a structure of the opening doors on both front and back sides. There is a large glass inspection window on the main door, and the interior of the cabinet is equipped with lighting lamp so as to facilitate operator’s inspection and maintenance.
9. Protection rating: IP65
System Composition
The online analysis system consists of a sampling system, a pretreatment system, a calibration system, an explosion-proof oxygen gas analyzer, a sub-cabinet, and its public utilities etc.
Application Areas
Applied to industries such as air separation, nitrogen generation, petrochemicals, metallurgy, and electron/electric power etc., it is used to detect and analyze the oxygen contents in various mixed gases, hence ensuring operational safety of the above processes. This device can continuously measure at one point, it is also able to perform multi-point automatic patrolling detection according to user’s requirements.
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