Kistler sensor measures mold compression

Dec. 13, 2022
The 9239B is highly sensitive and can be positioned in small or complex molds.

9239B cavity-pressure sensor Positioned directly behind the cavity wall in the mold structure or the embossing die, this 2.5mm-diameter longitudinal measuring pin from Kistler measures the pressure-induced compression of the mold during the injection and holding pressure phases without contacting the melt. 

What’s new? A new PiezoStar crystal that is especially useful in quality-control applications involving parts that must have optical quality characteristics or no blemishes.  

Benefits Greater sensitivity and flexibility. According to Kistler, the 9239B has almost five times the sensitivity of its predecessor. It can detect even the smallest pressures through closed mold walls. Also, due to its size, the 2.5mm-diameter sensor is easy to position in small molds, as well as molds with complex structures. Because the measuring pin is installed in the preloaded state, it can capture both compression and tensile forces with very high accuracy.   

Kistler Instrument Corp., Novi, Mich., 248-668-6900, www.kistler.com 

About the Author

Karen Hanna | Senior Staff Reporter

Senior Staff Reporter Karen Hanna covers injection molding, molds and tooling, processors, workforce and other topics, and writes features including In Other Words and Problem Solved for Plastics Machinery & Manufacturing, Plastics Recycling and The Journal of Blow Molding. She has more than 15 years of experience in daily and magazine journalism.