ProNamics Control Inc.

Good PCV performance is a crucial component in achieving optimum pipeline pressure control. It's important to recognize that the PCV performance degrades over time, eventually causing pressure control problems such as continuous PCV hunting. Once this happens the rate of valve degradation usually increases. ProNamics conducts in-situ control valve performance tests to identify valve issues that are compromising control performance. The tests identify problems with valve calibration, position feedback, actuator coupling key slop, slow actuator speed and other issues. Please click on Check Out Your Control Valve to find out more.

One specific area of our valve evaluation expertise is optimizing Rexa actuator performance. ProNamics has worked with pipeline companies to develop Rexa actuator performance specifications and we have much experience in troubleshooting Rexa actuator problems. Continuous hunting over long periods - resulting from issues such as poor controller tuning, output linearization errors, feedback or motor noise, faulty calibration and pump vibration - cause premature wear of the actuator. One outcome is that position control resolution can be severely degraded. Excessive motor activity and high oil consumption are key indicators that the actuator performance is degrading - and a good time to conduct a full PCV performance evaluation. Excessive actuator vibration caused by High valve cavitation results in faster wear.

There has been a significant increase in the application of VFD's for pipeline pressure control in recent years. While the most obvious benefit is reduced pumping costs, the VFD also has several inherent control performance advantages. These include elimination of valve backlash and stiction, a more linear process gain and a fast response. ProNamics has optimized VFD pressure controls on many pipeline applications. Please give us a call to discuss the challenges and benefits of pipeline VFD control in more detail. Please click on Pipeline VFD Pressure Control Optimization to find out more.

Humidity control can help to optimize the performance of the hot air / direct contact drying processes used in the pulp and paper industry. These processes include Yankee Hoods and Through Air Dryers used in tissue manufacturing and Air Float dryers and Flash Dryers used to dry pulp. Humidity control has the potential to improve thermal efficiency, sheet moisture control, and can assist in process diagnostics. In the past, a fundamental impediment to success has been sensor accuracy and reliability in high temperature/particulate exhaust streams. Our recent experiences with the Dewcon Humidity sensor have been very positive. Please click on Humidity Control for more information. You can calculate the savings on tissue machines by downloading PCI Yankee Hood Humidity Analysis.

A conventional Dryer Limit control strategy, where the Moisture controller adjusts machine speed, has the potential to maximize production rate on machines where drying capacity is the primary bottleneck. However, the frequent speed adjustments often degrade product quality and operating efficiency. We have developed an alternate approach which is designed to maximize production performance - not just the machine speed. Please click on Supervisory Speed Logic Control to find out more.