DESIGNED FOR STEAM TURBINE VALVE CONTROL SYSTEMS
MOORESTOWN NJ, USA — The Alliance Sensors Group PG Series LVDT linear position sensors are designed and engineered specifically for valve position sensing applications for steam turbine control systems in electric power generation plants.
Previously, the LVDTs used in the power generation industry were either designed by OEMs over 40 years ago, or are catalog LVDTs slightly modified for operation in a steam turbine environment. Over many years of using of these older products, inherent design flaws have come to light, notably the fact that the LVDT’s core would break off of its operating rod under typical turbine vibrations.
Many features of the Alliance Sensors Group PG series LVDT sensors were specifically requested by power gen controls engineers who had encountered these kinds of issues over time using traditional LVDTs.
Alliance Sensors Group’s approach to their PG series LVDT design for the power generation industry started with the premise that the LVDT must be extremely rugged, so these units feature a large diameter housing with a very thick wall and a versatile mounting configuration.
A PG series LVDT’s 3/8″ diameter operating rod captivates the LVDT’s core so that it can never come out or vibrate loose. This rod is offered with either a rigid coupling or a ball joint coupling that can be helpful in installations where there is a minor misalignment with the attachment mechanism on the steam valves.
PG series LVDTs utilize materials and manufacturing processes that can be certified for use in mild radiation environments found in boiling water reactor nuclear power plants.
Key features requested by the power gen marketplace embodied in the PG series LVDTs’ design include:
??? Cores that absolutely cannot break loose from the core’s connecting / operating rod
??? Installation features like standard body clamps, flange mounts, ball joint couplings, and rod eye ends
??? Two double contact shaft seals prevent contaminants from getting inside the LVDT’s bore
??? No connector— the sensor has screw clamping terminals that accept No. 24-14 AWG wire
??? Continuous sensor operation in ambient temperature up to 350 degrees F (175 C)
??? Two (2) year warranty and an over-temperature indicator built into sensor
Alliance Sensors Group PG Series LVDTs are available in five full scale ranges from 0-to-3 to 0-to-15 inches (75 to 380 mm).
Models include the PGHD Heavy Duty series LVDT with a 1-1/16 inch body diameter and the PGSD Super Duty series LVDT with a 1-5/16 inch body diameter.
Either series is available certified for operation in mild radiation environments at extra cost.
More information is online at: LVDT Linear Position Sensors PGHD Series web page.
Alliance Sensors Group, H. G. Schaevitz LLC Linear and rotary position sensors are for many different applications for measuring linear and angular positions.
At Alliance Sensors Group, H. G. Schaevitz LLC, we take performance and reliability seriously. We’re a full-service sensor company with proven experience and value-added services. We have technically trained staff to help you select the right sensors for your application. We specialize in Industrial, OEM, Power Generation, Military, Test labs and special processes in manufacturing.
Our product line includes LVDT, LVIT position sensors, RVIT rotary sensors, support electronics and special sensors. In addition to our standard products, we can also custom design and build sensors to your specifications.
Technical Contact: Ed Herceg firstname.lastname@example.org
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ALLIANCE SENSORS GROUP A DIVISION OF H.G. SCHAEVITZ LLC
Alliance Sensors Group World Headquarters
102 Commerce Dr. Unit 8,
Moorestown, NJ 08057 USA
Phone: +1 856-727-0250
Fax: +1 856-727-0251