MET 482, Senior Design Project

Department of Mechanical Engineering

College of Engineering, Technology, and Architecture

Group 2

Automated Pressure Test System

Mitchell Joseph
Brandon Tyson
Ryan Whitmore

Sponsor: GEMS

Gems Sensors & Controls Incorporated developed problems with the turning of the wrist of the workers that had to tighten and loosen pressure sensors eight hours a day.  The company was then losing money to the hospital costs and time taken off by the workers due to injury. This injury is called Carpel Tunnel Syndrome.  An estimated cost of $20,000 is spent on each worker that develops this condition. 

Students from the University of Hartford’s Mechanical Engineering TechnologyProgram have designed a universal holding fixture to house the many different pressure sensors that the company produces.  This holding fixture will eliminate any and all twisting and turning of the sensors.  The current program the Gems Sensors uses, cycles the pressure through the pressure sensors, which is another parameter that will be terminated as well.  With the desired process, the program will hold a constant pressure within the pressure sensor and the set screw will then be turned by a motor and screw terminal accordingly.

Currently, the process is slow and inefficient.  The operator spends most of his or her time waiting for the pressure to cycle through the pressure sensor and then adjusting the set screw for the program to read continuity.  For an average test on one sensor, the operator must wait through 5 pressure cycles depending on if the operator can get to pressure within the tolerable range. 

With the desired process created by the University of Hartford students, the process will be quick and very efficient.  The required abilities for the operator will be to choose the correct interchangeable cup fitting and top plate.  From there the operator must manually type in the set values and tolerances.  From there the program runs by itself with the pressure held constant through the pressure sensor.  The operator will also not need to adjust the set screw to reach continuity within the sensor due to the motor that is mounted on the press that will secure the sensor in place. 

The testing and debugging of the program and test system need to be completed.  From the testing, many issues can be figured and singled out, like leaks within the system, or finding the right motor to turn the set screw at the high pressures that some of the sensors must be set to. This new process is much more efficient and can be done faster than the current process.  More steps are needed in completing the new design such as testing and debugging.



University of Hartford CETA Mechanical Engineering