Liquid Metering Systems

Our intimate knowledge of metering technologies such as turbine, Coriolis, ultrasonic and PD meters enables us to integrate your requirements into a 360° solution to meet your flow measurement and uncertainty requirements. This includes: sampling and analysis including water cut, density, viscosity, vapor pressure and composition; proving and calibration including bi-directional ball provers, compact provers, master metering and water draw calibration systems; and metering and control supervisory systems. Petrosadid can integrate the liquid metering system via following types of flow meters:

• Turbine Meters

• Positive Displacement Meters

• Liquid Ultrasonic Flowmeters

• Coriolis Meters

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The liquid turbine meter has been the traditional method of metering for many decades. Turbine meters through their lifetime maintain their reliability, whilst also maintaining a high degree of accuracy when proven at regular intervals using a calibrated proving system. Helical type turbine meters can be used for higher viscosity oils and special bearings allow the meter to be used with condensates of very low lubrication properties.

we supply turbine meters for use in refineries and petrochemical plants and because they are easy to calibrate in situ they are also used as master meters for liquid ultrasonic metering systems.

The Positive Displacement meter, like the turbine meter has been the traditional method of metering for the last six decades.Positive Displacement meters provide a high level accuracy and can be used to meter oil with high viscosity. Their size, weight and vulnerability to internal damage, makes them unsuitable for offshore installations. They are a better choice for onshore terminals and industrial plants and are very frequently the preferred method of measurement for Tanker loading and unloading operations.

Liquid ultrasonic metering systems provide a space and weight saving solution and are therefore a good choice for Floating Production Storage and Offloading Vessels (FPSOs) and offshore platforms. However this type of flow metering technique is now being used extensively at onshore Loading/Unloading Terminals, Pipelines and Petrochemical plants.

Ultrasonic flow metering benefits from:

Smaller/lighter than conventional systems

Simple to produce i.e. low cost and short manufacturing time

No moving parts

Long term stability

No filtration necessary

High flow

High accuracy

Immune to medium – high frequency vibrations

Immune to unexpected pressure flow surges

We apply Coriolis metering technology where operating conditions are extreme and eliminate the use of turbine meters or positive displacement meters. Coriolis meters are suitable for hydrocarbon liquids at low temperatures (cryogenic), high temperatures, high viscosity and low lubricity. They are a good choice for gas Processing Facilities, Refineries and Petrochemical Plants.

Coriolis metering systems offer size and weight saving and do not require filtration of product but can only meter at low flowrates.

Typical applications:

Petrochemicals

Liquefied gases

Condensates

White oils

Asphalt

Truck unloading of unrefined crude oil significantly benefits from this method of metering providing reduced maintenance, improved measurement, volume and water cut accuracy.