Abstract: An assembly is disclosed herein that is configured to detect a liquid level in a liquid-containing vessel, the assembly comprising a first electrical circuit board disposed in a case and including an LED emitting component, an LED detecting component, and a switch-activating component, a sight window assembly configured to be mounted in an opening in a wall of the liquid-containing vessel at a location remote from the case, the sight window assembly including a housing with a first end section supporting a glass component with an apex configured to be disposed proximate the inner side of the wall of the vessel, and a second end section supporting a cable support module, a first fiber optic cable connecting the LED emitting component to the glass component and a second fiber optic cable connecting the LED detecting component to the glass component, the second fiber optic cable transmitting light reflected through the glass component to the LED detecting component when gas is present in the vessel at a designat

Abstract: A differential pressure monitor is disclosed herein, which comprises a controller comprising a processor disposed in a housing, and a memory storing instructions that, when executed by the processor, cause the processor to pre-calibrate a first pressure sensor and a second pressure sensor before initial use, and subsequently, determine the differential pressure between the first and second sensors during use of the sensors, and display an indicia representative of the differential pressure between the first and second sensors. Corresponding methods and systems also are disclosed.

Abstract: An oil filtration assembly is described herein comprising a container having an upper end portion and a lower end portion, an oil reservoir formed on the lower end portion of the container, and a removable oil filter subassembly integrated with the upper end portion of the container. The subassembly comprises a filter housing including an inlet configured to receive oil and a filtered oil outlet configured to permit an outward flow of oil into the oil reservoir, a filter contained in the housing and disposed between the inlet and the filtered oil outlet, and a top component configured to be removed for replacement of the filter. The oil filtration-reservoir assembly further includes an inlet service valve, an oil outlet service valve and at times a service valve for the vent line. Corresponding systems and methods also are disclosed.