Stem Angle Measurement Device (SAMD)
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Stem Angle Measurement Device (SAMD)
Teledyne LeCroy Test Services (TLTS) has developed a device to measure stem angular motion during MOV diagnostic tests. The SAMD addresses the need to monitor this parameter on Anchor Darling Double-Disc Gate Valves which are susceptible to wedge pin failures possibly leading to stem-disc separation. The SAMD can be used to periodically monitor and trend stem rotation for the entire valve stroke with extreme accuracy through the use of a state of the art digital rotary encoder with unique and versatile fixturing.
Features:
- Measures and documents full stroke stem rotation angle
- No modifications needed at the valve or actuator
- Non-Intrusive fixturing is easily assembled and installed in place of the stem protector cover
- Kit adapts to all Limitorque SMB/SB sizes as well as Rotork A7-91 actuators
- Unique magnetic stem attachment assemblies make for easy connection to stems with diameters of 0.625 inches and up
- Angle and travel measurements are taken into QUIKLOOK FS along with all other AF/AL data on typical tests
- Stem angle accuracy of ±0.14° (+0.01°/in) with repeatability of ±0.1° or better
- Stem angle resolution of ±0.009°
- Stem travel sensor facilitating 34 inches of measured travel
- Usable for As-Found testing as required by ASME code
- SAMD sensors use TEDS plug and play technology
- SAMD Kit is offered in a convenient shipping and storage case