Intrinsically safe level switches for Pfizer
A
Mobrey Measurement product story
Edited by the Engineeringtalk editorial team
Feb 20, 2001
The world's leading pharmaceutical group Pfizer has selected 120 of Solartron Mobrey's short-fork level switch Squing, for its newest Bulk Pharmaceutical Plant at Ringaskiddy, Ireland
The world's leading pharmaceutical group Pfizer has selected 120 of Solartron Mobrey's short-fork level switch Squing, for its newest Bulk Pharmaceutical Plant.
Chosen for its low maintenance, easy installation and competitive price, Squing will be used to indicate high and low level alarms in hazardous areas.
The Solartron Mobrey sensors are installed at Pfizer's (who recently merged with Warner-Lambert) new $300 million plant at Ringaskiddy, County Cork, Ireland where a wide range of pharmaceutical products will be manufactured.
Classified as intrinsically safe, Squings will be installed in every vessel located in the process buildings to indicate high and low level in reactors, headtanks, filters and crystallisation vessels.
The majority of Squings commissioned by Pfizer have been specified with Hastelloy forks for corrosion resistance against hazardous solvents and slurries.
Pfizer explains their reasons for choosing Squing: "With no moving parts and minimal intrusion Squing provides an accurate and reliable high and low level measurement.
As the Squing has no remote mounted secondary electronics, unlike a number of competitors products, there are substantial cost savings due to the absence of additional transmitter/miscellaneous panels and this simplifies the wiring and allows us to connect the output from the Squing directly to our Distributed Control System (DCS)." A visible heart-beat LED flashes continuously confirming that the sensor is operational and changes to a flashing alarm condition when either the liquid level is detected, or there is a problem with the sensor or power supply.
Pfizer again: "The LED gives operators local indication of the instrument status and allows for quick and easy fault finding by maintenance." Robust and versatile, Squing is ideal for a wide range of high and low level alarm duties, pump control and process level switching operations.
It comes in a variety of materials, including stainless steel, Hastelloy C, and Halar, for wide chemical compatibility.
Solartron Mobrey's industrial instrumentation distributor Modern Plant ensured that all specficiations set by Pfizer's project consultant partnership, Project Management and Foster Wheeler, were successfully fulfilled.
The new plant is due to begin operation during April 2001.
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