Force Monitoring on Pharmaceutical Tablet Presses

Solutions for Force Monitoring on Pharmaceutical Tablet Presses

The quality (weight/density) of a finished formed tablet is directly related to the compression roll force to make it.  By controlling the compression force within certain defined limits, better part quality can be maintained. A tablet press force monitor can become an online tablet quality inspector.

Helm has a unique approach to measuring the force on high speed tablet presses. Using a precision machined and heat treated stainless steel load cell’s, compression forces can be accurately monitored. Typically system is configured for 2 channels of monitoring. The system can be expanded to include monitoring for part ejection and pre-compression force.

Key benefits of monitoring force on tablet presses:

  • Machine Protection
  • Tooling Protection
  • Tablet Weight & Density Control
  • Tablet Height Control
  • Detection of Forming, Score and Ejection Problems
  • Easier Machine Set-Up & Adjustment
  • Knowledge through SPC Data Acquisition

The systems feature trend sampling routines, to arrive at an average learned force benchmark for each channel. There are adjustable high & low tolerance alarms for each channel, established as a percentage of allowable deviation from the sampled values.

Helm has three monitoring options available.  Specialty input modules for Allen-Bradley PLC’s provide the strain gage input for the load cell transducer.  The Helm PTM and RLG systems offer solidly engineered stand-alone systems; the PTM a more sophisticated monitor with Windows Embedded OS and a touch screen display.

RLG Loadgard RLG-4 with Key
PTM Loadgard PTM Series withOUT Key 2676
A/B PLC Input Modules 5-units-7in-1557

The PTM has SPC capability on board and features data acquisition and downtime reporting.

All of the monitoring approaches provide for Ethernet connectivity.

The RLG features Bluetooth™ with a “capture & store” app available for Android devices.

All enclosures are available in stainless steel

For further details or questions please contact us at