BEI introduces LP35 explosion-proof encoder | Automation.com

BEI introduces LP35 explosion-proof encoder

BEI introduces LP35 explosion-proof encoder

April 24, 2015 - BEI introduces LP35 explosion-proof encoder that meets UL, ATEX, and IECEx standards allowing for operation directly in Division 1, Zone 1 environments. 

The explosion proof LP35 is specially designed for oil and gas applications such as top drives, which can be as big as a pick-up truck, yet have surprisingly little space to install speed-sensing devices like encoders.  The aim is to keep the overall size of the top drive as compact as possible and this is where the industry’s lowest profile explosion proof incremental encoder comes to the rescue.

With a maximum profile of only 2.01 inches (51 mm), the LP35 takes up less shaft space.  As the motive force behind the drill string, top drives are subject to plenty of shock and vibration while the drill bit cuts into the various rock strata during the drilling operation.  The vibration resistant LP35 is built to withstand up to 250G, making it tough enough to reliably operate in harsh drilling applications, day in and day out.  Encoders in these applications are also often installed behind drive motors in close proximity to the motor brake, both of which generate a substantial amount of heat during operation.  The LP35 is ready to take the heat, and maintains high performance in temperatures up to +85°C (185°F).

Additional oil and gas applications such as draw works and mud pumps that require ultra-rugged feedback components can also benefit from the LP35’s hard-anodized housing and IP66 level of sealing, which ultimately reduces downtime.  In particular mud pump applications where the pumps are situated back-to-back, the low profile design allows space for installing a feedback device.  The encoder’s unique terminal box configuration allows the unit to be pre-wired, reducing wiring errors and saving time on installation.

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