1. Application Overview:
The AML-VOC series VOCs over limit alarm sensing device (volatile organic compound online detector) is mainly used in the exhaust pipes of industrial volatile organic compounds in key industries (emission sources with emission rates less than 2.5kg/h or exhaust volumes less than 60000m3/h), the surrounding areas of factories, and factory workshops; Especially for the detection of unorganized emissions after collection and treatment by collection and treatment devices; Unorganized emission workshop, factory boundary alarm detection, and excessive sample retention.
2. Measurement parameters:
VOC, Optional: SO2、NOX、O2、 Temperature, pressure, flow rate (flow rate), dust, etc.
3. System composition:
Online analysis host
Gas analysis instrument
Gas sampling device (including pre-processing)
Excess sample retention unit (optional)
4. Functional features:
Provide multi-level and multi parameter tiered warning and alarm limits for enterprises with clear emission limits (which other enterprises cannot achieve)
The product complies with the VOCs emission control standards for industrial enterprises in Hebei, Shandong, Shaanxi, Beijing, and Tianjin landmarks;
Wireless adopts GPRS, and data is automatically transmitted to the environmental monitoring department;
The TFT-LCD industrial screen displays the concentration values of various components such as VOC, SO2, NO2 detected in real time, with simple operation, clear interface, and convenient and fast operation;
If the sample exceeds the automatic retention limit and the alarm concentration is exceeded, the sample will be automatically saved to the Suma tank or airbag for accurate laboratory analysis in the future (which other companies cannot do);
The imported photoionization detector used is internationally recognized as the best VOCs detector;
The gas alarm controller detects the concentration value of VOC gas in real-time 24 hours a day. When the concentration value reaches or exceeds the alarm point, the controller immediately issues an audible and visual alarm and drives other peripheral devices such as exhaust or solenoid valves to operate, preventing explosions, fires, and poisoning accidents;
Optional explosion-proof design, can be installed in explosion-proof areas, safe and reliable;
The system adopts the total heating method, which ensures accurate and reliable monitoring data from probe sampling to analysis of high temperature throughout the entire process;
Equipped with automatic blowing function, it can automatically remove dust on the surface of the filter element and extend the service life of the filter element;
Equipped with automatic calibration function, no need for on duty, minimizing maintenance to the greatest extent possible;
Scalable optional measuring instrument for temperature, pressure, flow and humidity, accurately sampling temperature, pressure, flow and humidity parameters, analyzing the total daily and monthly emissions of VOCs from fixed sources;
It can store twice as much detection data as its peers, instantly query historical data, and export it on a USB drive for easy analysis of factory emission data;
Remote monitoring, capable of remotely controlling detection instruments and operating them on the central platform;
M-BUS signal output or RS485 digital output, can be uploaded to DCS and PLC systems;
Scalable measurement collection and processing device switch operation status;
Implement the enterprise standard Q/AML28-2017 VOCS over limit alarm sensing device (volatile organic compound online detector);
Equipment installation and networking shall comply with the "Technical Requirements for Installation and Networking of Non Methane Total Hydrocarbon Online Monitoring System for Fixed Pollution Sources in Shanghai (Trial)" and the "Technical Requirements for Photoionization Detector (PID) Method for Continuous Automatic Monitoring System of Volatile Organic Compound Emissions from Fixed Pollution Sources in Guangzhou Province"
5. Technical indicators:
Serial Number |
Indicator Name |
VOC |
SO2 |
NOX |
smoke and dust |
|
Detection error (indication error) |
≤±3%F.S |
≤±2%F.S |
≤±2%F.S |
≤±10% |
|
alarm error |
≤± 3% F.S (The alarm set value is generally (10-20)% F.S) |
≤±3%F.S |
≤±3%F.S |
≤±5% |
|
response time |
≤30s |
≤30s |
≤30s |
≤30s |
|
repeatability |
≤±2% |
≤±1%F.S |
≤±1%F.S |
≤±2% |
|
detection limit |
Not exceeding 2x10-11g/s |
1ug/m3 |
1ug/m3 |
0.1ug/m3 |
|
Drift (zero and range) |
≤±2%F.S/6h |
≤1%F.S /Year by year |
≤1%F.S /Year by year |
≤1%F.S /Year by year |
|
Sensor lifespan |
Over 1 year (using 24-hour continuous testing method) |
Over 2 years |
Over 2 years |
Over 2 years |
6. Model selection
PRODUCT MODEL |
|
Fixed source non explosion proof |
AML-VOC02P |
Non explosion proof factory boundary |
AML-VOC02T |
Fixed source explosion-proof |
AML-VOC02PEX |
Explosion proof factory boundary |
AML-VOC02TEX |
Note: Please provide special instructions when the function of retaining samples beyond the standard is required.