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Ultrasonic Flow Meters , Level Sensors , Water Quality Monitoring
RS Hydro > Flow Meters

Flow Meters

RS Hydro offer an extensive range of flow meters covering all applications and in all industries. We supply and install contact and non-contact flow meters depending on application, pipe size and flow conditions.

We are internationally recognised as specialists in measuring difficult applications for any liquid, at any temperature, in any location worldwide. This includes any liquid, steam, compressed air, gas or water in closed pipes and water and effluent in open channels, rivers and part-full pipes. We provide a worldwide service for supply and installation whether it is onshore or offshore.

Outstanding accuracy with no disruption of flow and no downtime.
Doppler, bubbler
and ultrasonic
open channel
measurement
technologies.
Non-invasive clamp on meters for almost all gas applications.
            Highly sensitive                meters for                       permanent or temporary deployment in large diameter pipe applications.
Clamp-on flowmeters for heat metering applications..
High accuracy magnetic flow meters for measuring conductive liquids. Battery, AC or DC powered.
Standard Class mechanical flow meters for measuring water with pulsed outputs.
Low maintenance and     high accuracy flow         measurement for           flare gas                        applictions.

Ultrasonic Flow Meters

Non-invasive, ultrasonic flow meters offer great benefits in many applications. By using ultrasonic transducers clamped to the outside of pipework, there is no disruption of flow or service downtime. Ultrasonic flowmeters use transit time technology (also known as 'time of flight'). The principle behind this method of flow measurement is that acoustic waves with a frequency of more than 20 kHz are emitted from one of the transducers to the other side of the pipe and back to the second transducer and the time taken for the signal to travel is stored. This process is then reversed with a signal being sent from the second transducer being received by the first. The differential transit time of the synchronised signals is proporional to the flow rate of fluid through the pipe.

This type of flow meter is usually used for clean liquids, but we can supply flow meters that can be used on fluids with up to 5% solids. RS Hydro supply portable ultrasonic flow meters which can be used at multiple sites, permanent ultrasonic flowmeters which are designed to be used at a fixed location and hazardous area ultrasonic flow meters which are intrinsically safe for use in environments where equipment needs to be explosion proof.

Open Channel Flow Meters

RS Hydro supply and rent a wide range of open channel flowmeters and equipment and can also provide extensive installation and maintenance services. By using portable or fixed open channel flow meters it is possible to accurately monitor flow rates in open channels. However, even small installation or setup errors can cause exponentially large errors. It is therefore critical that such devices are installed correctly and that it conforms to BS3680. RS Hydro has experienced multi-disciplined hydrometric consultants and engineers that can ensure that you are supplied with the equipment that is best suited to your application.

Clamp-On Gas Flow Meters

Recent advances in gas flow measurement technology have meant that it is now possible to measure almost all gases using clamp-on ultrasonic gas flow meters. These include natural gas, steam, compressed air, hydrogen, fuel gases, corosive gases and errosive gases. The transducers used in this kind of flowmeter are 10 times more powerful than those used in traditional ultrasonic flow meters and produce clean, coded signals with very little background noise.

Insertion Flow Meters

Temporary or permanently installed Insertion flowmeters can provide a flow monitoring solution that is more economical that using a full bore meter (particularly in large diameter pipes). They are also useful as a portable survey tool where occasional measurement is needed at many points. Insertion and removal can be carried out withoug supply disruption, by fitting gate valves at tapping points.

Heat Meters

Heat meters can be used on pipes of any size and material and are used widely in the building and industrial sectors for energy efficiency monitoring and the monitoring of hot water systems. Ultrasonic heat meters provide an easy to use, reliable and accurate method of quantifying heat energy consumption. All of the heat meters that RS Hydro supply are clamp-on, non-invasive meters and are therefore not prone to the deterioration that can occur with intrusive flow meters.

Electromagnetic Flow Meters

Viscocity, pressure, temperature and density have no effect on measurement with this type of meter. Electromagnetic flowmeters can be used to measure almost all electrically conducting liquids, slurries, pastes, lyes, juices, acids and emulsions. They provide excellent accuracy and long term stability and can measure flow rate of fluids that have a conductivity as low as 0.5µS/cm (0.5µmhos).

Turbine Flow Meters

RS Hydro supply a wide range of both full bore turbine flow meters, single jet flow meters and multi jet water flow meters. Full bore turbine flow meters use an impeller which is made of self-cleaning synthetic resin and rotates on stainless spindles mounted in the measuring chamber. For small pipe sizes (typically 5/8" to 2" diameter) mult-jet water meters are extremley accurate. These contain an impeller that is rotated by jets of water from multiple inlet ports.

Flare Gas Flow Meters

The ability to track down leakage with positive material identification, conserve energy by eliminating unnecessary flaring and reduce the cost of steam usage with proportional control make the Panametrics DigitalFlow GF868 ideal for flare gas applications and for the measurement of vent gas.