Why Voltage and Frequency Affect the Dosing Rate of a Motor-Driven Dosing Pump — And What To Do When They Don’t Match
Voltage and frequency directly determine motor speed, and motor speed determines dosing rate in mechanically driven pumps like the Injecta Taurus. Here’s why supply quality causes silent underdosing, and how to prevent it.
When Chemical Compatibility Charts Are Not Enough: The Case for System-Level Chemical Validation
Chemical compatibility charts give you a starting point. They do not tell you whether your specific system will fail. The chart says EPDM is compatible with 30% sulphuric acid — and it may be, under the test conditions used to generate that data. Those conditions may not match your operating temperature, your concentration, your exposure […]
Why the Point of Chemical Injection Affects Dosing Accuracy More Than the Pump Specification
A dosing pump specified to ±1% accuracy can deliver poor process results if the injection point is wrong. The pump delivers the correct volume. The chemical does not reach the process in the correct form, at the correct concentration, at the correct time. Engineers spend considerable effort selecting pump accuracy and flow ranges, and comparatively […]
The Relationship Between Stroke Rate and Pulsation — And Why It Matters Downstream
Every stroke of an AODD pump delivers a discrete pulse of fluid. This is not a defect — it is the fundamental operating principle of any positive displacement pump. But pulsation is also one of the most overlooked sources of process problems downstream, and the stroke rate you set has a direct and predictable effect […]
Why Stroke Rate Matters More Than You Think When Dosing Viscous Chemicals
Most engineers size a metering pump based on two things: the required flow rate and the discharge pressure. These are the right starting points. But for viscous chemicals, there is a third variable that determines whether the pump actually delivers what the datasheet says it will — stroke rate. Get the stroke rate wrong for […]