Hand-Held Battery Powered Flow Meters

Equilibar precision vacuum regulators are designed specifically to control a highly stable inlet pressure across widely varying input conditions. These regulators show very little effect from either variation in supply vacuum or changes in flow rate. Equilibar precision vacuum regulators work differently than traditional vacuum control valve designs. The Equilibar uses a flexible diaphragm as the only moving part. This diaphragm is used to directly seal against the internal valve orifices. This eliminates the “stiction” commonly found in traditional vacuum control valves that rely on dynamic o-ring or wiper type seals. The friction caused by these seals prevents the regulator from making tiny adjustments. The Equilibar design is frictionless and can control vacuum with very high resolution.

Advantages of a valveless piston pump:

- There are no valves to service, leak, hang up, or clog.

- Features only one moving part.

- Equipped with ceramic internals.

- Ensures drift-free operation.

- Offers precision dispensing with a variation coefficient of -0.5%.

- Flow rates range from microliters to 2.3 liters/min.

- Provides positive displacement up to 6.9 barg.

- Capable of self-priming up to 4.5 meters.

- Features instant reversibility.

- The fluid path is inert, made of ceramic and fluorocarbon.

- Performance is viscosity independent.

- Comes with a wide selection of drives.

Fluid Metering Inc. has been a leading manufacturer of metering pumps and dispensers for over 60 years in the USA, having introduced the first valveless rotating and reciprocating piston metering pump. Over time, FMI's metering pumps have been refined and remain a benchmark for accuracy, precision, and durability in the industry.

Our range of variable area flow meters are for high-pressure flow applications, for use with liquids and gases. All feature standard scale setup for either air, water or hydraulic oil; however we can create custom flow scales for most fluids and gases.

Various model options exist, the standard basic meter which offers a visual indication is also available for high temperature applications or phosphate ester liquids. Flow switches and flow transmitters are also available where your application may require a level of control.

Both the case drain monitor and clear view flow meter are lower pressure versions of our liquid variable area flow meters.