In water treatment plants (WTP) ammoniators are critical in the chlorination disinfection process. The addition of ammonia is a common municipal water treatment method that ensures public water supplies are clean as possible for human consumption.
Process Solutions Resources
Articles and Whitepapers
How can Cross help with your aging equipment? As your process equipment begins to age it becomes harder to operate your facility. Finding technicians and engineers who are familiar with the equipment becomes difficult. Older equipment doesn’t work as efficiently or reliably as it once did and finding replacement parts…
Are your valves lasting a year or less in your application? If the answer to this question is “yes”, then you may have the wrong valve for your application. There are several critical factors to consider when selecting a valve. Selecting the right valve for your application conditions can help…
Why you should choose FLEXIM ultrasonic meters for data centers If you are looking for flow meters for your data center, you have a number of options. If you want the most accurate and least invasive flow meter, we suggest FLEXIM’s ultrasonic meter. This equipment has several advantages that are…
When you need a valve quickly, Cross is here to help! Finding the parts you need, when you need them can be tricky. With the current supply chain issues, it can often be months before the part you need will arrive. The world of valves is no exception, but Cross…
Industrial control valves are constantly moving and therefore will wear faster than an on/off block valve. They require more maintenance than block valves and can be very expensive to replace. Proper material selection, sizing and maintenance are crucial to extending the life of control valves. Pneumatic Control Valves Pneumatic Control…
Technical Bulletins and Guides
Achieving High Availability with Redundant Rockwell ControlLogix Systems Rockwell’s Allen Bradley ControlLogix line supports enhanced redundancy with processors, communications, and power supplies to achieve high availability of your control system. Here are some of our recommendations, plus some pitfalls to avoid when implementing such a system. 1. Make sure you…
A PID loop adjusts its OP to maintain its PV at its SP. Some PID loops cannot be satisfactorily tuned by adjusting the three primary constants. When combined with good basic tuning, advanced methods can improve stability, responsiveness, and limit overshooting. See The Basics of Tuning PID Loops for suggestions on…
The art of tuning a PID loop is to have it adjust its output (OP) to move the process variable (PV) as quickly as possible to the set point (responsive), minimize overshoot, and then hold the variable steady at the set point without excessive OP changes (stable). Definitions PID = Proportional,…
Hazardous Area Classification Guide The National Electrical Code (NEC) defines hazardous locations as those areas “where fire or explosion hazards may exist due to flammable gases or vapors, flammable liquids, combustible dust, or ignitable fibers or flyings.” Hazardous locations are classified in three ways by the NEC: type, condition, and…
Oval Gear Flow Meter Installation & Troubleshooting Knowing the do’s and don’ts of oval gear flow meter installations is just as important to the life of your meter as was the selection criteria for choosing an oval gear flow meter. To avoid any unintentional damage to your new oval gear…
Guide to Selecting an Oval Gear Meter Once you’ve decided that an Oval Gear Meter is the best flow meter for your specific application, there are a few key things you will need to know to narrow your selection down to a single oval gear flow meter. What is the…
Case Studies and Application Notes
Cross Company Helps Automotive Paint & Coatings Manufacturer With Process Equipment For New Plant
Cross Company implements a FLEXIM Solar Powered Ultrasonic Flow Meter for HDPE Pipes.
Cross Company implements PCS 7 Combustion Controls of new boiler to meet modernization and production demands at Paper Mill
Cross Helps UVA Ensure Efficiency in Medium Temperature Hot Water Metering The University of Virginia, located in Charlottesville, was founded in 1819. The school serves 17,000 undergraduates and 8,700 graduate students on a 1682-acre campus that consists of nine undergraduate and three professional schools. As one might imagine, the UVA…
Cross Helps Tactical Fabrication Upfit Facility for Smisson-Mathis Biodiesel Production Cross was engaged by Tactical Fabrication, the main contractor of Smisson-Mathis Energy Solutions (SMES) responsible for the construction and commissioning of new facilities, to help with the safety equipment needed for their new flagship facility in Dublin, GA. SMES is…
Cross Helps Data Center Reduce Risk and Improve Efficiency with Flexim Ultrasonic Flow Meters When a DC area data center brought in Cross to look at a level measuring application, they didn’t realize they would also get a solution for their flow measurement issues. If you are familiar with data…
Cross Helps HRSD Measure Flow Ultrasonically in Concrete Pipe Application Hampton Roads Sanitation District (HRSD) is responsible for wastewater treatment in Southeast Virginia. They have nine large treatment plants and eight small plants in Southeastern Virginia and the Eastern Shore. They also have over 100 pump stations, and many remote…
Cross Helps Pharmaceutical Manufacturer Improve pH Measurement Process A pharmaceutical manufacturer located in North Carolina’s Research Triangle Park was experiencing some issues with their automated pH measurement system. The existing systems were used for monitoring pH in their critical utilities wastewater treatment area. The existing systems were obsolete and required…
Cross Helps Kemira Migrate Safety System While Keeping their Facility Operational Kemira, a specialty chemical manufacturer, located in Marietta, GA made the decision to migrate their existing Triconex safety control system to a Siemens PCS7 system. The Triconex system had been in place since 1993 and was starting to cause…
