VOCS detection station

Product Description:

The VOCs automatic monitoring and alarm system is a newly developed VOCs gas monitoring system, which uses original imported PID sensors and a new 32-bit low-power processor; Using an 8-inch LCD touch screen display, beautiful and elegant; The circuit adopts 4-layer wiring, which has stronger resistance to weak signals and interference; The independent high-precision imported 16 bit AD chip and unique signal processing algorithm provide higher and more stable measurement data accuracy.

Product features:

◆ Original imported high-performance British PID sensor, with good stability and repeatability, and long service life;

The characteristics of PID principle: The basic principle of PID is to use the ultraviolet (VUV) generated by the vacuum discharge phenomenon of inert gas to ionize the gas molecules to be tested, and measure the current intensity generated by the ionized gas to obtain the concentration of the gas to be tested. The PID sensor is mainly composed of a UV lamp light source and an ion chamber, with positive and negative electrodes in the ion chamber, forming an electric field, Under the excitation of high-energy ultraviolet light sources, organic volatile molecules generate negative electrons and positive ions. These ionized particles form a current between the electrodes, which is amplified and processed by the detector to output a current signal, ultimately detecting concentrations at the ppm level.

◆ Pre processing unit and post processing unit: The pre processing unit performs preliminary processing on the extracted samples to make them suitable for transmission, shorten the transmission delay of the samples, and reduce the burden on the processing unit, such as pressure reduction, cooling, dust removal, etc. The post-processing unit further processes and regulates the sample, such as adjusting temperature, pressure, and flow rate, filtering, dehumidifying, removing harmful substances, and ensuring safe pressure relief and flow limiting.

Real time display of temperature and humidity;

◆ Suitable for efficient and fast water removal situations, can be used online for a long time

◆ Suitable for operation in high temperature, high dust, high oil and gas environments, such as boiler flue gas, automobile exhaust, environmental protection departments, industrial production process monitoring, pollution source emission monitoring, online monitoring of heavy metals in flue gas, desulfurization and denitrification monitoring, waste incineration flue gas emission monitoring, volatile organic compounds (VOC) monitoring, biogas online monitoring, etc.

Multiple units such as mg/m3, ppm, ppb, pphb, etc. can be selected;

◆ Online curve chart display, allowing real-time viewing of data dynamics

◆ Wireless, Bluetooth, fiber optic, NB, Loya, multiple signal transmission methods to choose from

Seamless integration with the system platform, enabling diversified operations in the upper computer system

◆ Wall mounted independent installation, no need for debugging, can be used directly by powering on

The system can accurately detect the value of VOCs even in environments with dust and water vapor within 200 ℃

technical parameter：

Detection gas: VOCs

Detection principle: PID principle

Detection method: fixed online long-term continuous detection, pump suction detection method;

Measurement range: 0-1ppm, 20ppm, 50ppm, 200ppm, 2000ppm, 6000ppm, 10000ppm, 0-5mg/m3, 0-20 mg/m3, 0-100 mg/m3, 0-500 mg/m3, 0-1000 mg/m3, 0-5000 mg/m3, 0-10000 mg/m3 (optional, range not listed can be customized)

Resolution: 0.001ppm, 0.01ppm, 0.1ppm, 1ppm, 0.01 mg/m3, 0.1 mg/m3, 1 mg/m3

Accuracy: ≤ ± 2% (actual concentration, higher accuracy requirements depend on sensor performance)

Operation mode: Touch screen operation

Recovery time: ≤ 20 seconds

Signal transmission: Two sets of relay outputs: Passive contact capacity 220VAC 0.5A or 5VDC 0.5A

Through the wireless module function, remote transmission of detection data and status alarms can be achieved, and Ethernet access can be achieved (optional function)

Main material: Shell: ADC12 aluminum alloy, sturdy, wear-resistant and corrosion-resistant (optional 316 stainless steel shell)

Air chamber: Made of high-strength wear-resistant and corrosion-resistant aluminum profiles, sturdy and durable (optional 316 stainless steel air chamber)

Installation method: wall mounted

Working temperature: -20 ℃~+60 ℃ (special requirements require customization)

Working humidity: ≤ 95% RH, no condensation (humidity>90% RH, condensation can be equipped with a filter)

Relative humidity: 10%~95% RH

Power supply: 24VDC (normal operating voltage range 12-30VDC)

Power consumption: 1.5W

Work pressure: ≤ 200Kpa

Size: 62cm * 45cm * 16cm (height * width * thickness)

Executive standards: GB15322.1-2003, GB3836.1-2010, GB3836.2-2010, GB3836.4-2010

Weight: approximately 5G

VOCs installation plan：

Installation plan for organized emissions of fixed source VOCs

1. Install a VOCs online monitoring alarm device at the emission port, which can be plugged into a 3G/4G phone card or connected to a corporate computer via USB interface to transmit real-time data to the cloud or computer.

2. The data on the computer side retains the exploitable data port protocol, and only the environmental protection bureau provides the platform port. After the protocols are connected to each other, they can be connected to the environmental protection bureau platform.

Unorganized VOCs installation plan：

1. The VOCs alarm is connected to the RS485 input line of the alarm control host through a tree shaped wiring method, transmitting data to the host.

2. The alarm control host can be equipped with a 3G/4G telephone card, and can also be connected to the enterprise LAN through a network cable to transmit real-time data from the instrument to the cloud.

3. The data on the computer side retains the data port protocol that can be developed, and only needs to be provided by the Environmental Protection Bureau

You can connect to the Environmental Protection Bureau platform by exiting the platform port.