​What is a Liquid Level Gauge?

A liquid level gauge, also known as a level indicator or sight glass, is a meter that is used to determine liquid level in a process tank, vessel or drum. A level gauge is simply a glass tube that gives a visual representation of the level of liquid that is in the vessel.

While simple in their design, they are a very effective technology for a direct visual indication of process fluid level. There are many applications across the industry that require the monitoring of the liquid level and there are many different types of level indicators to fulfill these varying needs.

In many situations the fluid is dangerous or the place in which the liquid is stored is of such a nature that it is manually impossible to find the level, making some sort of level indicator imperative.

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Storage Servo Gauge

The current servo level gauging technology includes the Advanced Tank Gauge and the Xmitting Tank Gauge.

The Tank Gauge and Xmitting Tank Gauge series microprocessor-controlled servo gauges are compact and need only a 2″ mounting flange.

The servo gauges can easily be integrated with existing SmartRadar, hydrostatic or hybrid gauging installations.

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Magnetic Level Gauge Working Principle Animation

Inside the indicator tube is a lightweight magnetized indicator or series of metallic flags. The indicator is magnetically coupled to the float and moves up and down with the liquid level. The indicator allows the operator to read the level from more than 100 feet away. The only moving parts are the float and the indicator.

Theory :

Magnetic level gauges work on the principle of communicating vessels, therefore the level in the measuring chamber will be the same as the level in the vessel. The measuring chamber is fitted with a float, which has a magnet inside. The float with magnet will float on the medium and the magnet in the float will turn the flaps of the indicating rail.

The float in the measuring tube is standard not pressurized and has no magnetic or mechanical guidance. This construction makes the float less dangerous than a float which is standard pressurized. When necessary Hadro can produce a pressurized float.

With the below mentioned process conditions it is possible to select a float which will float on the medium.

Each flap in the indicating rail is fitted with a permanent magnet which makes this level gauge unaffected by shocks, vibrations and high temperatures. Also moisture and / or an aggressive environment are no problem for this level gauge.

This magnetic level gauge is available with plastic or stainless steel flaps. The flaps can be placed in a plastic, aluminium or stainless steel housing.

Because of the construction of the flaps, one side white and on the other red / orange it is possible to see the level over a greater distance or in darker places.

With the available “Pointers” it is possible to set the visual limits on the indicating rail on every level you require.

When the magnetic level gauge is fitted with magnetic switches it is possible to get a signal. With more switches you can make a pump control (pump on / off) and / or create a high / low alarm. Beside or instead of level switches a reedchain transmitter can be mounted, this reedchain has an standard output signal of 4-20 mA.

Magnetic level gauge are also suitable for interface reading. The float will sink into the medium with the lower density and will float on the medium with the higher density.

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Introduction of Tank gauge for LPG LNG

When it comes to a tank gauge for LPG LNG there are many options out there to insure that you either do not overfill or are not low on the product in your tank. A level indicator has many purposes and there are a few different technologies offered.

We show the basic models of fuel tank gauges for LPG LNG that they offer. That doesn’t mean that we are limited to only these basic models. Shown on our catalog page is the full tank gauge for LPG LNG offering and we would be happy to provide pricing on any of those models shown.

These models are manly tank flow level indicators or a mechanical style. We also offer the Piusi Ocio tank level indicator that is a air diaphragm type indicator that adjusts the pressure when the tank level decreases or increases.

This article comes from fueltransfer edit released

Maximising Profits Through Tank Terminal Automation

Global oil and gas bunkering and storage industry faces great complexity across its spectrum of operations due to the wide variety of business processes, the. With multiple systems, the biggest challenge tank terminal automation managers must overcome is getting the right information to the right people at the right time to support vital decision making processes.

ptimised operations efficiency

A state-of-the-art totally integrated tank terminal automation resources planning and execution system, FuelTrack integrates all components of your business from field level to enterprise level seamlessly onto one single platform. By enabling smooth automation and integration of your business applications, we optimise your operations and increase your competitive edge to meet market demands efficiently.

Stay secure and compliant

FuelTrack’s series of enterprise-level modules assist you in securely managing your business contracts in both the leasing and trading business environment. FuelTrack delivers the added benefit of planning your entire terminal operations with complete security and audit trails in place.

A solution that grows with you

FuelTrack can be deployed at a single tank terminal automation or a multi-site enterprise with terminals located in different geographic locations. With multiple easy add-on modules, you can build on the software as your needs expand.

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Tank Gauge System Components

Tank gauge systems perform bulk liquid measurements on storage tanks on tank terminals, a.k.a. tank farms.

These systems provide inventory management and overfill prevention safety functions. The systems include level measurement devices such as safety certified radar level gauges, tank gauge system multi-input temperature transmitters, a tank hub which handles communication between the field devices and the control room for single or multiple tanks.

A tank gauge system hub that transfers real time tank gauge system data from field devices to the inventory management software and/or control system.

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Use a Servo as a Gauge

Cut costs, not repeatability. Servo gauge is a high performance alternative to other tank level measurement technologies such as radar tank level gauges. It offers a gauging solution for a large variety of applications up to 6 bar pressure ratings.

Servo gauges are TUV certified for SIL 2 and SIL 3 rated safety instrumented systems, and are suitable for deployment as an independent overfill prevention system conform to API 2350 and other major safety recommendations.

Servo gauges are certified as per OIML R85 2008 and are fully compliant for custody transfer applications. Servo gauges are multifunction gauges measuring product level, interface level and density measurement.

This ensures easy use of servo gauges in existing tank farms with limited opening on tank top.

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Liquid Level Gauges

The level gauge is a high accuracy gauge designed for use in custody transfer tank gauging applications. Our level gauge exceeds the requirements of UK weights and measures standards for tank gauges.

Our Servo Level Gauge is a reliable, versatile and accurate automatic tank gauge, the servo gauge has been designed for ease of installation with minimal moving parts.

The level gauge is designed to measure all kinds of liquid and can be situated either in free space or stillwells. The level gauge can easily be linked to our tank gauging system or to an existing tank monitoring system.

The level gauge include the options to link the gauge to feature like temperature measurement (spot and averagetemperature are available) temerature profiling, full integration to management system, density measurement and much more.

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Tank Terminal Automation System Market

Tank terminal automation system is a process in which a Supervisory Software System automates certain manual processes in a terminal. Tank terminal automation system is used to automate, measure, record and report all transfers and exchanges throughout the product movement in a terminal. Tank terminal automation system provides monitoring, control and management of the entire product handling process from receiving to storage to distribution.

Tank terminal automation system combines automatic control and business management functions. It is generally an integrated, modular, open and scalable solution that helps ensure the safe and stable operation, optimal management and profit maximization of the terminal, as well as lowering production costs. This paper covers all the aspects of tank terminal automation system.

The Field layer includes Remote operated shutoff valves (ROSOV), flow meters, control valves, Double Block and Bleed valves (DBBV), temperature and pressure measurements, Level measurement and groundings.

The Control and Automation layer includes computers / servers, Operator stations, PLCs, Printers, card readers, and emergency shutdown system. The top Business layer is for data exchange between the Management / Enterprise systems and control & automation. Orders are transferred from the Management / Enterprise systems. When the order is complete, a transaction is uploaded to the Management / Enterprise systems for invoicing.

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Automatic Tank Gauge to grow your business

The Automatic Tank Gauges provide comprehensive fuel site data for advanced fuel asset management.

Combining industry leading algorithms with enhanced security, real-time notification, and anywhere, anytime access, the Automatic Tank Gauges keeps your site running and profitable.

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