What happens when dispensed volumes drift during production? A closed-loop system measures each process and automatically adjusts dispensing to maintain consistency.
VERMES Microdispensing has expanded its Drop Volume System with a closed-loop function that measures dispensed volume during production and automatically corrects deviations. The DVS+ system is designed to help maintain consistent dispensing even when operating conditions change.
The system combines DVD 31 or DVD 32 sensor units with a DVC 30+ controller, with the sensor selected according to the dispensing volume. The controller uses measurement data not only to monitor the process but also to adjust the valve open time when the dispensed volume moves away from the target.
The valve open time can be adjusted at microsecond resolution. According to VERMES, the system can return to the target volume in fewer than three triggers following a sudden disturbance, while typical dispensing drift can be compensated with the following trigger.
DVS+ uses CLEVR (Closed Loop Exact Volume Regulation), which provides Monitoring and Control modes in RAW and Calibrated variants. RAW operation works with relative process values, while the Calibrated variant uses a reference measurement to provide volume information in application-relevant units. Calibration can also support traceability and documentation of measurement results.
For pulse-sequence dispensing, the system offers Fixed Delay and Variable Delay modes. The latter automatically adjusts the delay according to valve open time to maintain a constant dispensing frequency, making it suitable for synchronised processes.
A browser-based interface provides a graphical real-time view of process data, while standard interfaces allow integration into existing machine environments. DVS+ is compatible with current VERMES dispensing systems and can be incorporated into existing production lines.
The system is intended for microdispensing applications in automation, electronics, semiconductor manufacturing, and medical technology where consistent volumes and continuous process monitoring are required.
“ In microdispensing, it is not enough for every individual droplet to be right. The process must also remain stable and controllable over long operating periods,” says Stefan Hirte, CEO, VERMES Microdispensing.
Click here for the official announcement.
