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SF6安全保障专家
专注于SF6气体检测的专业化
WFS-S1-S type SF6 infrared sensor application
发布时间：2017-05-30
来源：ydlcb 浏览次数：52次
SF6 Infrared Sensor (WFS-S1-S)
SF6 infrared spectrum precision measurement, customized according to Nanwei specification; Standard open communication protocol, convenient for your secondary development! Dedicated to the precise detection of SF6 gas in high-voltage equipment in the power industry!
summarize
SF6 infrared sensor (WFS-S1-S) based on dual-beam dual-wavelength infrared measurement technology and high-precision digital processing technology, is widely used in high voltage switch GIS room SF6 gas leak monitoring (0 ~2000ppm) and SF6 purity analyzer (0 ~ 100%). Internal integrated complete automatic drift control and temperature compensation circuit.
SF6 infrared sensor (WFS-S1S) adopts dual beam non-spectral infrared (NDIR) detection technology, which is resistant to other gas interference, easy maintenance, good stability, and built-in temperature compensation. Standard Modbus RTU protocol, digital output and analog output optional advantages. Suitable for SF6 leak alarm, on-site construction protection, single gas accurate analysis, online monitoring, industrial process analysis and other applications.
Product characteristics
WFS-S1-S sulfur hexafluoride SF6 sensor adopts dual beam non-spectral infrared (NDIR) detection technology, which has the advantages of anti-interference of other gases, easy maintenance, good stability, temperature compensation, 10 years of life, digital output and analog output of Modbus ASCII protocol. Sulfur hexafluoride SF6 sensors are suitable for leak alarm, on-site construction protection, simple gas analysis gas, online monitoring, industrial process analysis and other applications.
Compared with other SF6 detection technologies such as ultrasound and negative corona discharge principle, the advantages of infrared SF6 sensors are:
Higher accuracy and resolution;
Less environmental impact;
Highly targeted, no response to other gases;
Life expectancy of up to 10 years;
l High cost performance, affordable preferential prices;
Very low maintenance costs;
l Digital and analog output mode is optional, convenient for secondary development and application;
l Micro structure, low power design;
No radiation source, no secondary hazards.
Technical parameter
l Detection gas: sulfur hexafluoride (SF6)
l Detection principle: Dual wavelength non-spectral infrared absorption detection (NDIR)
l Intake mode: diffusion type
l Detection range: 0~2000ppmv (customized type)
l Detection accuracy: ≤± 5% FS
l Working temperature: -20 ~ 50℃
l Working pressure: 750 ~ 1200mBar
l Ambient humidity: 0 ~ 95%RH
l Preheating time: ≤60S
Response time: 45S (Td90, measured at 50%FS)
l Working voltage: 5V
l Working current: peak current < 200mA, average current < 60 mA
Digital output: UART output, modbus RTU protocol, other forms can be customized
l Analog output: 0.4~2V voltage, other forms can be customized
Service life: ≥10 years
l Storage temperature: -25 ~ 55℃
l Resolution: 1 ppmv
l Repeatability: ≤± 2% FS
l Linear error: ≤± 1% FS
l Lower detection limit: ≤30 ppmv
Pin specification
Serial number | name | Feature | Instructions | |
1 | +5V | Power input | Voltage range 4.9V to 5.1V | |
2 | TEN | Send enable | It is used to control the sending and receiving of RS485 chips | |
3 | RXD | Receiving end of the UART port | UART port with 5V logic level | |
4 | TXD | The sending end of the UART port | UART port with 5V logic level | |
5 | GND | Ground connection | ||
6 | Vout | Voltage output | 0.4~2V voltage output. Internal resistance of about 20K ohms, can be connected to an op amp or directly to the ADC chip, can not be used for power supply stream. | |
7 | GND | Ground connection | ||
Wfs-s1-type SF6 sensor is a kind of infrared gas sensor based on single light source dual beam non-dispersive infrared measurement technology (NDIR), which is specially designed for SF6 leak detection. Advanced infrared sensors with excellent linearity and repeatability ensure long-term stable and reliable measurements.