The Fisher 4660 pneumatic high-low pressure pilot activates safety shutdown systems for flowlines, production vessels, and compressors. This pilot is available with either single or dual set point capability, using switch points to maintain full output pressure when the process pressure is within the set point range. If the process pressure is outside this range, the pilot switches from full output pressure to zero output pressure. The primary switching mechanism in this pilot is a block-and-bleed relay assembly. This construction can be used in both block-and-bleed and bleed-only systems
-Remote Mount, Actuator Mount
-SIL 3 capable
-Air, Natural Gas
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.
-Repeatability meets the U.S. Minerals Management Service test tolerances referenced in Outer Continental Shelf (OCS) Order No. 5 and defined in the American Petroleum Institute (API) RP14C standard.
-Simple modular construction, plus a line of pre-packaged parts kits, makes pilot maintenance fast and easy.
-Construction materials have been selected to protect the pilot from corrosive environments.
-The rugged Bourdon tube sensing element and shock-absorbing switch points dampen the effects of vibration.
-Standard high-resolution set point adjustments are easy to set, non-interactive, and can be locked in place to maintain the desired set point