Shand & Jurs (L&J Technologies & L&J Engineering) products

The Omnitrol Model 610 single stage control and the Model 710 two stage control are top mounted level switches of the adjustable differential type and utilize graphite as standard displacer material. Graphite, which is an extruded material having no binders to fail, is virtually indestructible making it ideal for corrosive application controlling chemical and petroleum products in wide temperature and pressure ranges. Because they are of the solid displacer type they are unaffected by pressures, leakage, collapsing, or surface agitation, making them well suited for difficult applications such as surging or agitated liquids.

The Omnitrol Model 613 single stage control and the Model 713 two stage, (Dual Actuator), control are top mounted level switches of the adjustable differential type and utilize porcelain as standard displacer material. Porcelain offers several advantages such as low cost and high density for use in applications such as sewage, oils, paints and foaming and surging liquids. The displacer is styled, and the surface glazed, to help prevent adherence of oils and other contaminants common to applied processes. These controls have solid displacers which are unaffected by pressure, leakage, and collapsing. With a simple field adjustment the displacer can be positioned to any desired elevation below the mounting connection to open and/or close an electric or pneumatic switch.

The Omnitrol Model 616 single actuator and the Model 716 double actuator are top mounted level switches. These controls have a standard 2-1/2" NPT connection and are also available with various sized flanges. The displacer is made from stainless steel tube. With a simple field adjustment, the displacer can be positioned to any desired elevation below the mounting connection to open and/or close an electric or pneumatic switch. The distance between the on/off or open/close is adjustable from a minimum of 2-1/2" (in a specific gravity of 1.0) to the maximum length of the cable, which is 10 feet (standard). Controls may be supplied with cables up to 75 feet for 600 series controls and 40 feet for 700 series.

The Omnitrol Model 621 single stage controls and the Model 721 two stage controls are "special purpose" top mounted level switches of the fixed differential type. The feature which sets these level devices apart from other top mounted controls is the lead displacers that are suspended on a stainless steel beaded chain for the purpose of determining floating roof tank top alarm positions.

In an effort to prevent costly and dangerous spills, many major oil companies, pipelines and marketing terminals have established a requirement to check the operation of tank safety switches. To meet this ever demanding need, the Omnitrol Ground Checker Option has been developed.