The PS-AULDP Series are ultra-low-pressure transmitters. These devices can be used to measure differential pres¬sure between an area and a reference space. It combines precision high sensitivity silicon sensing capabilities and the latest in ASIC technology with Dynamic Self Compensation. Standard features include: Bi-directional pressure ranges, selectable output, and on-board auto-zeroing. A built-in alarm relay output and LCD are optional. Several accessories are available. The unit may be mounted in any position but typically is installed on a vertical surface with the pressure ports on the right and the cable entrance on the left. The enclosure has a standard opening for a ½” conduit and may be installed with either conduit and a conduit coupler or a cable gland type fitting.