FTIR Open Circuit Long Path Monitoring System

Product description and operating principle

The FTIR open circuit long path monitoring system uses an optical telescope with a diameter of 762.5px to emit an infrared beam and monitor compounds present in the air through an air medium.

Its dynamic, fully automatic, and real-time alignment system is unique among Michelson interferometers, thus eliminating the adverse effects on the operating system caused by vibration and environmental temperature changes.

More customizable and cost-effective equipment in the industry:

IMACC's FTIR adopts a unique design, which achieves multifunctionality by adding monitoring accessories on the basis of a standard basic unit (embedded FTIR and control electronic components, etc.), meeting various monitoring needs while saving costs.

Significant features:

A stable and robust industrial system can be used normally in extremely harsh environments and temperatures, and can maintain continuous unmanned operation for several months. The unique design provides high-energy output without scattered light. Mobile adjustment of azimuth and elevation, fully remote monitoring and control, real-time monitoring of up to 50 compounds, setting of alarm concentrations for different compounds, pre programmed software with graphical interface and display system

More sturdy and durable:

By reducing rapid environmental temperature changes and deducting the vibration effects of other instruments, IMACC's FTIR monitoring system can maintain good performance even in extremely harsh environments. It can operate normally under sudden temperature changes or the operation and vibration of other instruments in the surrounding area.

Rest assured to use:

IMACC's technology should be applied globally in the industrial, petrochemical, and chemical industries, and has been adopted by the US EPA and other air quality monitoring agencies for atmospheric emissions.

Due to the different monitoring needs of each factory, IMACC's FTIR long path open circuit monitoring system has two mode options: integrated transceiver mode and separate transceiver mode.

In the transceiver integrated mode (single base mode), one end of the open circuit light chamber is a telescope, and the other end is one or more solid angle reflectors. Single base mode can be achieved by using a telescope mounted on an electric or manual tripod, aiming at one or more mirrors at the other end, and sequentially monitoring one or more optical path paths. The single base mode is suitable for passive radiation measurement under special arrangements, and is therefore also known as passive monitoring.

Passive monitoring: Detecting infrared light scattered by gas at a heat source (chimney, torch, etc.) through a telescope. This can identify the type of gas, and using a lower detection limit mode can also qualitatively determine the temperature of the gas.

(Dual Base Mode): In the dual base operation mode, one end of the light chamber is a scattering telescope, and the other end is the receiving device of the telescope. Compared to single base mode, dual base mode can detect lower concentrations of gas in one or two connected optical paths, but requires initial settings and the installation of an exchange box (or microwave coupling device) between the two ends. This mode can only detect up to two optical paths.

Diversified applications:

Smoke gas monitoring: Continuous emission monitoring of smoke ducts, exhaust pipes, or environmental protection treatment devices.

Process control monitoring: Real time continuous monitoring of industrial processes or process gases, and feedback of the results to the control system and alarm system.

Monitoring within buildings, warehouses, chemical plants, and mines: monitoring of emissions from workers' workplaces, as well as monitoring of hazardous gases constantly accumulating in confined spaces.

Factory boundary monitoring: open circuit monitoring of the diverse paths at the boundaries of factories and equipment. Can be applied to the monitoring of accident leaks and unorganized gas emissions.

Detection limit:

IMACC's FTIR open circuit monitoring system can be customized according to different special needs. The detection limit depends on the compound being detected, the optical path length, and the response time. Increasing the optical path length and sampling time can achieve lower detection limits.

IMACC FTIR Typical Compounds Minimum Detection Limit*

*Adopting a refrigeration MCT detector

**Detection limit based on dry gas

software package

Each device is equipped with a complete and user-friendly software package under the Windows operating system. Image display:

This includes real-time line charts showing the relationship between gas concentration and time, bar charts comparing with alarm concentrations, and concentration relationships between different compounds. Users can also obtain specific reports through report generation software.

FTIR technical parameters

Detection limit: Depending on the type of substance being detected, the length of the gas chamber used, and the required reaction time, a very low ppbv level can be achieved. Dynamic range: from ppbv level to high concentration level

Reaction time: Typically 10 seconds to 1 minute Calibration: Not mandatory but includes basic reference unit units

Output: Continuous 4-20mA analog, RS232/485, LAN/RTU or TCP mode Environment: 0 ° C~40 ° C; 0-98% RH

Physical technical parameters

Basic unit: 16 "(l) * 20" (w) * 9 "(h) (International System of Units length: 40.6 cm (length) * 50.8 cm (width) * 22.9 cm (height))

Extract monitoring accessories: Internal units of 5 cm, 10 cm, 10 m, and 32 m, heated to 185 ° C

Electrical devices: All surface electrical devices have an internal voltage of 120/220V in the base unit, and a current of 15 Amps when heated

Optional accessories: optional structural units, heated extraction pipelines and units, laptop devices for control systems