Two new liquid level meters and a back-pressure level switch are available. The LT1 is a back-pressure level switch used for upper/lower limit level sensing of liquids. A back-pressure sensor and built-in orifice to supply gas means there are no moving mechanical parts to wear out. Liquid-level alarm and sensing are accomplished with a single tube so no additional adjustments are required. The LE100/110 high-accuracy linear series is designed to simplify measurement of liquid levels in single and multiple chemical baths or as a pressure sensor. The front panel display features two digital readings for actual level and set value, up to eight level set points, and four pushbuttons for setting the unit. While in operation, it automatically compensates for changes to specific gravity while providing reports of the bath’s current status. Empty adjustment, span adjustment, and automatic specific gravity computation can all be accomplished with a single touch set-up. The built-in linearizer compensates for variations in tank shapes from the simple to complex by using up to 11 adjustment points. The LE100/110 Series displays units such as mm, percent, l, ml, Pa, and KPa. Repeatability is ۪.3 percent of full span. Sampling time on the unit is 0.2 sec. The LE110 with differential pressure offers a built-in orifice. It can be used in semi-enclosed tanks where internal pressure varies. These instruments are suitable for both the end user and OEM markets for applications that include semiconductor cleaning equipment, processing tanks, laboratory equipment, test stands, etching systems, and other processes requiring accurate measurement of chemical liquid level.