The Basics of Closed Loop Control Systems

A closed loop control system uses a sensor that feeds current system information back to a controller. That information is then compared to a reference point or desired state. Finally, a corrective signal is sent to a control element that attempts to make the system achieve its desired state.

A very basic example of a temperature control loop includes a tank filled with product (the process variable), a thermocouple (the sensor), a thermostat (the controller), and a steam control valve feeding a tubing bundle (the final control element).

The video outlines all the major parts of the system, including the measured variable, the set point, the controlled variable, controller, error and disturbance.

For more information contact Combustion Technology, LLC. Call them at 800-327-1831 or visit them at

Combustion Technology Salutes Our Veterans

Veterans Day

Veterans Day is not just another holiday. It honors those Americans who fought for our freedom. By celebrating our Veterans, we continue to tell the story of how this country became the most powerful on Earth - through bravery, honor, truth, and determination.

Our Veterans are our neighbors, friends, family, and co-workers. They took an oath to defend the United States and our Constitution, from all enemies, foreign and domestic. We must never forget their bravery, service, and sacrifice.

Combustion Technology, LLC thanks our Veterans for serving our country and protecting our freedom.

FIREYE BurnerLogiX Microprocessor-Based Integrated Burner Management Control

The Fireye® BurnerLogix System is a microprocessor based burner management control system designed to provide the proper burner sequencing, ignition and flame monitoring protection on auto- matically ignited oil, gas, and combination fuel burners. In conjunction with limit and operating con- trols, it programs the burner/blower motor, ignition and fuel valves to provide for proper and safe burner operation.

For more information about the Fireye® products,  contact Combustion Technology, LLC. In Vancouver call 360-253-9600; in Portland call 503-287-2500. Or visit

Siemens Combustion Controls SKP Actuators and Gas Valves

The Siemens Combustion Controls SKP series electro-hydraulic actuators are used in combination with any Siemens VG series gas valve. This modular approach creates a matrix of valve combinations, allowing manufacturers to meet varied capacity and pressure regulation requirements.

For more information about Siemens Combustion Controls,  contact Combustion Technology, LLC. In Vancouver call 360-253-9600; in Portland call 503-287-2500. Or visit

Fox Thermal Mass Flowmeter Frequently Asked Questions

Fox Thermal Gas Mass Flowmeters are used in a wide variety of application across many industries
including light and heavy industrial plants, process heating facilities, up/mid/downstream oil & gas, and water/wastewater treatment plants. Fox Thermal meters measure gas flow rates in mass (Kg/Hr, Lb/Hr) or standardized volumetric units (MSCFD, SCFM) and can measure virtually any gas flow. Many facilities today have one or more combustion processes, such as a boiler, process heater, or flares, in their plants. The adoption of accurate and reliable measurement devices will improve combustion efficiencies, utilities accounting, and regulator reporting.

Flow Thermal offers a great FAQ (frequently asked questions) cut sheet. To get a copy of the Fox Thermal FAQ, go to this Combustion Technology web page.

For more information about Fox Thermal Instruments,  contact Combustion Technology, LLC. In Vancouver call 360-253-9600; in Portland call 503-287-2500. Or visit

The Siemens LME7 Flame Safeguard

The Siemens Combustion Controls LME7 Flame safeguard sets a new standard for flexible, cost effective burner supervision. Ease of installation, programming and commissioning are incorporated into a reliable, field proven control. The LME7 offers flexibility not found in competitive burner control units, at a very attractive price.

Siemens LFL and LAL burner controls provide burner sequencing and flame monitoring for the supervision of individual gas, oil, or dual fueled burners. With an incomparable record for safety and reliability, the economical LFL continues to be one of the most popular, globally approved flame safeguard controls.

For more infomration about Siemens Combustion Controls products, contact Combustion Technology, LLC by calling 800-327-1831 or visit their web site at

Dungs Combustion Controls: Innovative System Solutions for the Thermal and Process Heating Industry

Dungs Combustion Controls offers a complete range of technologies for controlling, metering and modulating of combustible gas and combustion air. Dungs offers the complete range of products from single valves, to complete gas trains, automatic burner controls to complete burner management systems.

Products Manufactured:
  • Burner Management Systems 
  • Automatic Burner Controls
  • Pressure Regulators
  • Pressure Switches for Gas and Air
  • Solenoid Valves
  • Double Solenoid Valves
  • GasMultiBloc® Multifunctional Gas Controls
  • System Engineered Gas Trains
  • Ball Valve
  • Motor Butterfly Valves & Actuators
For more information about Dungs Combustion Controls,  contact Combustion Technology, LLC. In Vancouver call 360-253-9600; in Portland call 503-287-2500. Or visit