SPMD Spring Pack Measurement Device0 pages

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
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