Many industries rely on large furnaces. For example, the gas and oil industry uses a great deal of heat to refine and process crude oil. The steel industry must heat metals as part of heat treatment processes that occur in special furnaces. With new EPA regulations and efficiency considerations, it’s important to keep pressure low and this has led to special draft range differential pressure transmitters like the SMART3151. This instrument provides several important benefits in furnace operations.
The Importance of Furnace Draft
The flow of air within a furnace is a vital to energy efficiency and heat control. But what is draft? Draft is the difference between atmospheric or room pressure and pressure within the furnace combustion chamber. This affects the flow of airneeded for the combustion process.
Drafts can be natural, forced, induced or balanced. It is important to monitor this airflow at all times, as it can greatly affect temperature and heat transfer. Draft range differential pressure transmitters are able to detect very low amounts of pressure and send their readings to a furnace control system. In fact, the DR800 can measure pressures as low as 0.1 inches H2O full scale, delivering accuracy to within 0.5 percent. The DR800 is extremely stable, even though large ambient temperature ranges.
Thanks to the DR800, pressure calibration is uncomplicated. It is made possible by including a Hi/Lo gain jumper and continuous the span adjust. You also can choose an LCD display for local indication.
The SMART3151is very durable, but should you need repairs they can be done right in the field. You can easily remove its entire electronics housing without disassembling the unit. Plus, your maintenance personnel won’t have to carry specialized tools for the job. The NEMA 4 enclosure and standard process industry form factor make the SMART3151 easy to use.