Preferred Instruments manufactures microprocessor based controllers, instruments, and electric actuators for combustion and process applications. Preferred Instruments also manufactures oil tank gauging and leak detection equipment. A major component of the Instrument group sales is from control systems integration and personal computer based Supervisory Control and Data Acquisition systems. The company's industrial factory is located in Danbury, CT.
- Understanding Fuel Savings in the Boiler Room
- Because of their relatively low capital cost and high impact on boiler efficiency, burner and combustion control retrofits offer boiler owners the quickest paybacks based on energy savings.
- The Case for Draft Controls: Then and Now
- Modern draft controllers are easy to set up, have large easy to read displays, and are pre-programmed to include all the essential draft control functions. Although the requirements for draft controls have changed over time, their installation in certain combustion applications has remained a constant over time.