Honeywell Pressuretrol Limit Controller - L4079B1041/U

The Pressuretrol Limit Controller by Honeywell is an advanced pressure control device, adept at managing pressure levels ranging from 10 to 150 psi. This controller stands out due to its unique single-pole single-throw (SPST) functionality which breaks during a pressure rise. One of the key features of the controller is the manual reset switch operation which aims to uphold the precision and reliability of the system.

Constructed with a stainless steel diaphragm, this controller ensures compatibility with a broad spectrum of media such as steam, air, non-combustible gases, and fluids which do not corrode stainless steel. The diaphragm operates in conjunction with micro switch snap-acting switches that are designed to respond quickly and accurately to changes in pressure. These switches have the added feature of automatically opening on a pressure rise but requiring manual resetting.

One of the most striking aspects of this controller is its versatile mounting options. Users can decide to install the device using a 1/4 inch National Pipe Thread (NPT) female fitting on the diaphragm assembly. Alternatively, the surface mount can be executed through the base of the case for better accessibility and ease of use.

From a technical standpoint, the Pressuretrol Limit Controller has been engineered for a variety of applications, predominantly providing limit control of steam, air, non-combustible gases or non-corrosive fluids. The device is equipped with screw terminals, ensuring secure electrical connections and easy assembly. Furthermore, the stainless steel diaphragm functions as its sensor element, providing durability and ensuring accuracy.

In terms of temperature tolerance, this controller exhibits a high level of heat resistance, capable of functioning at a maximum operating temperatures up to 150 F (66 C). This makes it an ideal choice for work environments where fluctuations in temperature may be a common occurrence.