UltraCheck Spring Pack Tester (SPT) AREVA’s Spring Pack Tester (SPT), developed in cooperation with Limitorque, verifies that installed spring packs are capable of producing desired torque outputs, provides torque versus torque switch setting data, provides estimates of output thrust (dependent on stem factor), identifies defective or incorrectly assembled spring packs, and allows trending of spring pack performance.

Torque switches have minor manufacturing differences that can be identified and adjusted using the UltraCheck Torque Switch Testers (TST). When used with the AREVA Spring Pack Tester System, a customized performance curve can be generated for the specific spring pack and torque switch being used in a specific actuator. The TST allows quick verification and adjustment of torque switch balance efforts and assists in determining where the open and closed switches should be adjusted before final testing begins. This information can help expedite testing in the field.

Spring Types• Limitorque spring packs• Coil springs • Belleville washer sets

Sensory Capabilities• 25,000 lb. load cell • 0”-2” LVDT

Software• User-friendly, Windows-based• MS XP, VISTA and Windows-7 compatibility• Same “look and feel” as other UltraCheck

diagnostic platforms• Interface with UltraCheck M software• USB interface with conditioning electronics• Automated data acquisition• Real-time data acquisition• Linear regression routine improves spring rate

curve accuracy• Graphic overlay features for trending and

comparison to reference curves• Torque switch test data can be entered to

determine theoretical range of actuator capacity

UltraCheck Torque Switch Tester (TST) Set• Used with the Spring Pack Tester System• Test Limitorque actuator torque switches in sizes

SMB-000 through SMB-4• Reduced radiation exposure• Allows check-out of new replacement switches in

the warehouse• Permits torque switches to be adjusted and

returned to service instead of being replaced

Features and Benefits• Non-intrusive • Fast, easy and accurate• Improved plant efficiency through optimal valve

configuration/calibration• Decreased unscheduled, unexpected and

non-budgeted repairs by detecting problem valves prior to failure

• Lower repair cost by focusing only on valves that require maintenance

UltraCheck® SPT and TST System

UltraCheck is a registered trademark of AREVA Inc. The data and information contained herein are provided solely for illustration and informational purposes and create no legal obligations by AREVA. None of the information or data is intended by AREVA to be a representation or a warranty of any kind, expressed or implied, and AREVA assumes no liability for the use of or reliance on any information or data disclosed in this document. © 2013 AREVA Inc. All rights reserved.

5/13 ANP:U-032-V5-13-ENG

Measured displacement and force, calculated torque and predicted thrust for actuator torque switch settings.

Spring Pack data is presented for individual data channels (displacement and force in time domain), top and middle, plus Spring Rate Curve, bottom.

Spring Pack curve overlayed with a standard reference curve. Inset box of performance parameters shown in detail below.

Detailed graphics of data are possible, such as the Displacement vs. Torque plot shown, with values for each torque switch setting. All data presented in this table can be shown graphically.

Our TST Set includes a set of three testers:Actuator size SMB-000, Actuator size SMB-00, Actuator size SMB-0 to SMB-4

AREVA Inc. Corporate Headquarters7207 IBM Drive Charlotte, NC 28262

For more information, contact your VP, Key Accounts: Tel: 704 805 2410 – Fax: 434 382 5629regional.manager@areva.com www.us.areva.com

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