Conquering the Challenges of Metering Concentrated Chemicals

Why metering highly concentrated chemicals are being used more frequently?

Various industries are seeing a dramatic increase in their use of high-concentration chemicals for countless different applications. For example, Pesticide & mosquito sprayers have found that the cost of transporting and storing large amounts of dilute malathion is significantly higher than shipping small concentrated volumes and diluting them on-site. The same is true for sodium hypochlorite, a disinfectant chemical used for water treatment, and industrial cleaning chemicals like the ones used in automatic car wash equipment. In most cases, users of dilute chemicals find that they are basically paying to ship and store large drums of chemicals that consist mostly of water.

The power generation industry also utilizes low-flow process metering of concentrated chemicals for many different applications, such as metering bromine into cooling towers for algae control, injecting hydrazine into boiler feed-lines for corrosion management, and more recently, a number of fuel cell fluidic applications.

However, metering chemicals at high concentrations comes with many challenges. As the concentration increases, the chemical feed rates must significantly decrease. At these low flows, the metering precision and long-term accuracy become more difficult to achieve. High-concentration chemicals typically have intensified corrosive properties to contend with as well.

The CeramPump® from Fluid Metering, Inc. having chemically inert, sapphire-hard ceramic internals can accommodate all of these application challenges. The valveless design, having only one moving part made of sapphire-hard ceramics, will maintain drift-free accuracy of better than 1% for millions of maintenance-free cycles, without the need for recalibration. These features make the CeramPump® ideal for low and micro-volume process applications. In addition, long-term drift-free accuracy makes the CeramPump® metering pumps especially suited for low flow process metering of concentrated chemicals applications. These chemical metering pumps are available in a variety of configurations ranging from simple lab pumps to complete programmable metering and dispensing systems, as well as many compact OEM designs for medical, analytical, and process instrumentation. Click on the video below to see how our pump works.

 

For assistance with a specific application use our “Live Help” at http://fluidmetering.com for a direct connection to Fluid Metering’s application experts, or use our secure Application Request Form to provide us with details of your project. One of our specialists will contact you to target a solution.

What Are the Advantages of Using a Ceramic, Valveless Metering Pump?

The valveless CeramPump® technology was first patented by Fluid Metering over 55 years ago. Fluid Metering’s pumps, have only one moving part to accomplish both the pumping and valving functions, thereby eliminating the check valves that are present in all other reciprocating (syringe pumps, diaphragm pumps, bellows, piston) designs.

FMI Valveless Metering Pump uses a unique rotating and reciprocating ceramic piston, moving within a precision mated ceramic liner to accurately pump fluid in one direction without allowing any backflow. The reciprocation action of the piston is similar to a standard piston pump. As the piston moves back, it draws fluid into the pump chamber. As it moves forward, fluid is pushed out of the pump. The simultaneous rotation alternately aligns a flat of the end of the piston with inlet and outlet ports, effectively functioning as a valve. An animation of continuous metering using the CeramPump® principle can be found on Fluid Metering’s Web site at http://www.fluidmetering.com/how-it-works.html.

Valveless Metering Pump

There are a variety of key advantages that come with using FMI’s patented CeramPump® valveless piston pumping technology:

  • Valveless Design The valveless feature of the CeramPump® design is its most significant feature. There are typically four check valves present in diaphragm, bellows, and traditional piston pumps. Even during normal operation, these will wear over time and not seal properly allowing backflow. As a result, accuracy drifts and minimally the pumps need recalibration. Eventually, the check valves need to be serviced.
  • Ceramic Internals The CeramPump® uses sapphire-hard ceramics for both the piston and mated liner. These components are dimensionally stable in that they will not change shape or dimension over time. Therefore, the pumping chamber remains stable for millions of dispenses without downtime or recalibration. In addition to dimensionally stable they are chemically inert which allows our pump to work in a greater variety of chemicals.
  • Accuracy & Precision Throughout the pumping cycle the inlet and outlet ports of the FMI Valveless Metering Pump are never interconnect ensuring accurate fluid flow in one direction preventing any backflow (without check valves). As a result FMI pumps accuracy is held from microliters to the full flow range and output does not change more than ± 1% of set value. Inaccurate pumps can generate waste and incur extra costs. Check our Pay back Calculator to see how long it will take for a FMI pump to pay for itself.

Additional advantages that come with using a Valveless Ceramic Metering Pump for FMI can be found at http://fluidmetering.com/features-benefits.html.

For more information, Call toll free 1-800-223-3388 or 1-516-922-6050, or use our “Live Help”, for a direct connection to Fluid Metering’s application experts.