SHAN NENG / resources

Engineering Glossary

Engineering Glossary from Shan Neng. Explore micro pumps, fluid control, engineering requirements and OEM / ODM project support.

Flow Rate

Volume passing through a system per unit time. Always compare values at the same pressure or head.

Energy per unit weight of liquid, expressed as liquid-column height. It includes the resistance the pump must overcome.

Force per unit area. Identify whether a stated pressure is gauge, absolute or differential.

Electrical potential difference at the pump terminals; include supply tolerance and startup conditions.

Electrical charge flow. Startup, normal operation and stalled conditions may draw different currents.

Rate of energy use. DC electrical input power is voltage multiplied by current at the measured operating point.

A motor using electronic commutation instead of mechanical brushes. Lifetime still depends on the entire pump assembly and operating conditions.

A pump using a moving diaphragm and valves to transfer gas or liquid. Output may be pulsating.

An impeller transfers energy to liquid. Flow depends on the intersection of the pump and system curves.

Operation without the intended liquid. Whether it is permitted depends on the specific pump design.

Control by varying the duty ratio of a pulse signal. Confirm the approved signal level, frequency and wiring.

An enclosure classification for ingress protection. Use the rating and test conditions provided for the specific model.

The operating and rest pattern over time. State both on-time and off-time, not just a percentage.

A measured acoustic quantity that depends on distance, mounting, background noise and operating conditions.

A reliability measure that requires defined test conditions, sample size and an end-of-life criterion.

LET’S DEFINE THE RIGHT FIT

Share the flow, pressure and space your design needs.