PD Meters

PD meters, also known as positive-displacement meters, are flow-measuring devices that do not require an external power source. The energy of the flow rate drives the devices, which makes them useful in many different applications, including those with very low flow rates.

There are three main types of PD meters: spur gear, helical gear and compact spur gear. The basic design of all three is similar, but there are certain unique attributes of each one that make them useful in different situations. Additionally, the spur gear design is available with different configurations for use in high-pressure and high-viscosity liquid systems.

PD Meters Work in Different Industries

Spur gear PD meters are most commonly used for oil-based fluids and solvents that are nonabrasive. The helical gear design works with heavy fluids and abrasive liquids. Helical units may also be used in hazardous environments. The compact spur gear design is useful in tight spaces and was designed for painting systems.

All three of the PD meter designs share some common specifications. They may be used for bi-directional flow and give accurate readings across a wide range of fluid rates. Some models do not require straight piping on either end of the connection. PD meters can also be connected to some fluid switches and remote reading devices.

AW Lake Company offers many different types of PD meters, monitoring devices and switches. Custom work is also available for particularly demanding engineering systems.