Issue 109
Video: Calibrating Charge Mode Piezoelectric Accelerometers

Charge accelerometers, o ften identified by having a sensitivity in units of pC/g,  are key to safety and readiness in both aviation and industrial applications. With the latest firmware update to The Modal Shop's Portable Vibration Calibrator Model 9110D, technicians in charge of aircraft fleet readiness and gas turbine safety can now calibrate charge output accelerometers quickly and easily on-site.
  • Calibrate single-ended and differential output charge accelerometers
  • Create calibration reports for charge mode accelerometers stand-alone in pC/g or paired with a charge amplifier as a system in mV/g
  • Use internal memory and three mouse clicks to quickly document the calibration of current output charge converters typically used on gas turbine monitoring systems
Learn how to calibrate a charge accelerometer to avoid costly, unnecessary sensor replacement, and to improve aircraft fleet readiness or turbine safety and uptime. Watch a video overview and contact us for a free firmware upgrade today!
Industry News 

  • Burt Hurlock from Azima points out the importance of predictive maintenance in his article for Plant Services, Calculating the Value of Avoided Unplanned Downtime, and challenges companies to "understand the value of events that don't happen."

  • In this article found on, Isaac Maw discusses several approaches to asset maintenance and asserts that predictive maintenance is the ultimate goal for many companies today. A digital USB accelerometer with a magnet mount and a phone controller could be the first step to help your plant move from preventive to proactive and even to predictive maintenance.
  • Installing sensors such as IMI's 4-20 mA Vibration Transmitters on rotating equipment can provide the continuous vibration data needed to understand the health of a particular asset. Further, a move toward Industry 4.0, or the Industrial Internet of Things (IIoT) can increase plant productivity and reliability, as Frederic Baudart discusses in Machine Design's Is Vibration Detection the Canary in the Mines for Manufacturing? Check out our story, below, on how Petasense has proven their commitment to quality IIoT databases with portable calibration products from The Modal Shop.
Petasense Uses the Portable Calibrator to Ensure Quality Asset Health Monitoring

When Petasense, an Industrial IoT startup, needed to be sure that the databases at the heart of their asset health monitoring solution were built on quality data, they turned to The Modal Shop's Portable Vibration Calibrator Model 9100D. Read this article to see how the accuracy and simple intuitive design allows Petasense to go the extra mile and ensure their clients have a continuous understanding of the health of their assets.
Question of the Quarter

The Modal Shop has many dynamic pressure sensor calibration options. None of them are what one might call "portable." Should we design something that could be brought to the turbine during an outage for the purpose of system testing the combustion dynamics monitoring system?

Michael R. Scott
Category II Vibration Analyst
The Modal Shop, Inc.
An MTS Systems Corporation