DOAS-1000 UV Gas Analyzer
The DOAS-1000 UV Gas Analyzer is designed for precise monitoring and analysis of gas emissions in various industrial applications, including power plants, petrochemical facilities, and environmental research.
Its advanced UV spectroscopy technology enables real-time detection of multiple gases, ensuring compliance with regulatory standards and enhancing operational efficiency. Ideal for users seeking reliable data for quality control and process optimization, the DOAS-1000 empowers businesses to maintain a sustainable approach while protecting air quality.
Overview
This analyzer measures the concentrations of gases such as SO2, NO, O2, and CO. It
features high measurement accuracy, high
reliability, rapid response times, and a wide
range of applications. Its performance
specifications meet or exceed those of
similar international products, making it fully
capable of satisfying the technical requirements for ultra-low emission monitoring.
Features
UV Spectroscopy Overview: The detection limits for gases such as SO2 and NO reach 1 mg/m³ (based on a 15-meter optical path). Compared to NDIR technology, it offers distinct advantages: measurement accuracy is unaffected by moisture or dust (since water vapor does not absorb UV light, and the UV absorption by liquid water and dust is non-selective—manifesting as slow spectral variations), detection limits are lower, and thermal drift is minimal. It features a 10:1 measurement range ratio with automatic range switching. The light source is a pulsed xenon lamp with a lifespan of 10⁹ flashes; at a sampling rate of 3 readings per second, this equates to a 10-year service life. The system contains no moving optical parts and is immune to vibration. It utilizes a combination of White cell, DOAS, and PLS technologies to ensure minimal zero and span drift. It features automatic spectral adjustment for extended maintenance-free operation and exhibits minimal cross-interference between the measured gases.
Main Features
▪ Measurement principle based on UV Photometry
▪ Features automatic zero-point calibration
▪ Utilizes an electronic flow sensor to monitor sample gas flow through the optical cell
▪ Built-in AC mechanical vacuum pump with Teflon diaphragm
▪ Task software enables real-time monitoring of test data during operation
▪ Continuous self-diagnosis function with alarm capabilities
▪ Microprocessor-controlled multi-functional operation
▪ Self-diagnostic functions, including monitoring of light source intensity decay
▪ Bi-directional RS-232 port for remote control
▪ Adaptive signal filtering technology to optimize response time
▪ Digital status output for instrument operating parameters
▪ Features temperature and pressure compensation
▪ 7-inch color touch-screen display
▪ Large-capacity memory for automatic storage of historical data (minimum 1 year)
▪ Supports remote operation via built-in DTU
Parameters
|
Measurement Gases & Ranges |
SO2: 0-1000ppm: UV Sensor NO: 0-1500ppm: UV Sensor CO: 0-1500ppm: IR sensor O2:0-25%VOL: EC Sensor |
| Unites | ppb, ppm, µg/m³, mg/m³ |
| Zero Noise | <0.2 ppb (RMS) |
| Lower Detection Limit (LDL) | 0.1 ppb |
| Zero Drift | < 2%FS/7d |
| Span Drift | < 2%FS/7d |
| Response Time | <10 s T90 |
| Linearity | <1.5% FS |
| Repeatability | <0.5% FS |
| Sampling Flow Rate Range | 800 cm³/min ±10% |
| Ambient Temperature | -10°C – 40°C |
| Dimensions (H × W × D) | 19-inch Rack-mount, 178 mm × 432 mm × 613 mm |
| Weight | <10 kg |
| Power Supply | 200 V – 240 V, 50/60 Hz, 400 W |
| Analog Output | 10 V, 5 V, 1 V, 0.1 V (Selectable) |
| Relay Output | 14 channels |
| Communication Interfaces | RS232, RS485, Ethernet, USB, Analog Signal |