SPMD Spring Pack Measurement Device - Teledyne Test Services - #1

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Test Services 513 Mill Street • Marion, MA • 02738 Tel: 508-748-0103 Fax: 508-748-1093 www.valvetest.com email: rwmasson@teledyne.com Spring pack displacement measurement is essential for the proper setting of an MOV torque switch. Spring pack relaxation can result in excessive spring pack displacement. If the displacement becomes excessive, the spring pack can bottom out and cause an undesirable locked rotor condition. Using TTS’ Spring Pack Measurement Device (SPMD) as part of an MOV diagnostic testing program assures that the spring pack is operating in its allowable range. Features • Compatible with Crane Viper data acquisition systems • Fits spring packs from SMB-000 through SMB-5 • Magnetically attaches to operator • Easily installed interchangeable extension screws • NIST traceable calibration Specifications Size: 2” x 3 3/4” x 3 1/2” Weight: 20 oz. Accuracy: 2.0% FSO Range: 1 inch SPMD Spring Pack Measurement Device © 2007 Teledyne Instruments Test Services All rights reserved.. 01/07LD