Continuously measure Furnace Exit-Gas Temperature (FEGT) using Non-Contact Infrared Sensors to optimize overall performance of boilers and furnaces under varying conditions of coal quality, load, ash fouling, and slagging.
- Prevent failures by proactively monitoring the furnace temperature
- Determine precisely when to perform soot-blowing
- Set trigger alarms to take quick corrective actions when gas temperatures approach slagging/fouling limits with continuous online monitoring
- Measure and quantify trade-offs of heat rate and NOx and SO2 emissions
- Optimize heat transfer by controlling FEGT under varying conditions
- Prevent unwanted slag accumulation at inlet pendants by controlling FEGT below ash fusion temperatures
- Reduce down time due to failures by prevention
- Easily install and maintain while boiler is online.
In many combustion processes, one of the main combustion gases is CO2. Therefore, measuring the CO2 gas temperature is a reliable measurement of the combustion temperature.
Our combustion monitoring solution is a cost effective system that utilizes the IPE 140/45 pyrometer. This is a pyrometer specifically designed for reliable “non-contact” temperature measurement of hot combustion gas containing CO2.
The system is easy to install and maintain even while the boiler is online. It allows for a very quick reaction to undesirable conditions with continuous online monitoring of the combustion temperature.
LumaSense’s FEGT solution includes
- Infrared Temperature Sensor
- Protective Sealed Jacket Assembly
- Protective Cooling Jacket
- Vortex Air Cooler
- Removable CaF2 Window Assembly (Window Slide)
- Air Purge Assembly
- Extended Site Tube
- Mounting Flange (Ball Flange)
- Air Filter for Vortex Air Cooler
| Infrared Thermometer | |
| Temperature Range | 400 to 2000 ° C (MB 20) |
| Spectral Range | CO2 absorption band for hot CO2 gas |
| Uncertainty (Tamb. = 25 °C, ε=1, T90 =1s) | Up to 1300 °C: 0.6% of reading in °C Above 1300 °C: 0.8% of reading in °C |
| Repeatability | 0.1% of reading in °C + 1 °C |
| Resolution | interface and display: 0.1 °C,
analog output: < 0.03% of temperature range |
| Analog output | linear 0 to 20 mA or 4 to 20 mA, DC, switchable; load max. 500 Ohm |
| Power Supply | 24 VAC/DC (14 to 30 VAC/DC)
(AC: 48 to 62 Hz) |
| Power Consumption | 6 VA |
| Protective Housing | Stainless steel enclosure with vortex air cooling (air only required for long-term monitoring) |
| IP Rating (pyrometer) | IP65 (DIN 40 050) |
| Note: The pyrometer is able to measure hot combustion gas (with typically approx. 10% CO2 ) with a thickness of 40 cm. | |
| System | |
| Max. Temperature Purge Air | 75 °C (into cooler) |
| Max. ambient temperature enclosure | 90 °C |
| FEGT System Weight | approx. 6 kg |
| Air Filtering | 5 µm filter |
| Environment | |
| Ambient temperature | 0 to 53 °C at pyrometer housing |
| Storage temperature | -20 to 60 °C |
| Relative humidity | Non condensing conditions |
| Vortex Cooler | |
| Model | 208-25-HSS |
| Material | Stainless Steel |
| Inlet | 1/4 inch |
| Cooling Capacity | 440 Watts |
| Air Consumption @ 6.9 bar | 708 slpm / male inlet |
LumaSense
LumaSense systems empower our customers to realize immediate, verifiable, and sustainable savings from efficiency gains and waste reduction that go directly to the bottom line. Typical efficiency gains range from a minimum of 1% and up to 4% – even well beyond – opening the door to billions of dollars of savings in readily preventable expenses for our customers in the Global Energy, Industrial Materials, and Advanced Technologies markets. Systems and sensors span thermal imaging, pyrometry, fiberoptic temperature sensors, non-dispersive infrared and photo acoustic spectroscopy, gas-sensing modules, and a range of purpose-built sensors. These are developed, optimized, and tuned for the specific requirements of resource-intensive global industries and all are integrated into a feature-rich and customizable software solution to optimize the insight these sensors can provide and to allow for integration into controls and automation of processes.
Furnace Exit-Gas Temperature (FEGT) Measurement System