What is BS EN 13352 - Performance of automatic tank contents gauges about?
BS EN 13352 specifies the minimum performance requirements for various classes of automatic tank gauges which are limited to static tanks of shop fabricated manufacture both metallic and non-metallic, underground and above ground which do not exceed 5 m in height.
BS EN 13352 is applicable to gauges for fuels (products) which are flammable, having a flash point up to but not exceeding 100 °C, stored at premises (e.g. filling stations) at which fuel is dispensed for use in vehicles and other forms of transportation.
BS EN 13352 applies to gauges suitable for use at ambient temperatures and subject to normal operational pressure variations.
BS EN 13352 relates to the measurement of product level, measurement of product temperature and detection of the presence of free water. The detection of free water may be compromised for Alcohol blended fuels.
Note 1: Gauging of liquefied gases are not covered by this standard.
Note 2: BS EN 13352 is not intended to cover safety functionalities (i.e. overfill prevention, leak detection, etc.). Further Standards apply.
Note 3: BS EN 13352 is not intended to cover legal metrology requirements.
Who is BS EN 13352 - Performance of automatic tank contents gauges for?
BS EN 13352 on performance of automatic tank contents gauges is useful for:
- Manufacturers of automatic tank contents gauges
- Fuel filling stations
- Petroleum industry
- Testing laboratories
Why should you use BS EN 13352 - Performance of automatic tank contents gauges?
The principal function of a tank gauge is to measure the level of liquid contained in a storage tank without the need to access the tank and take manual dip readings. The gauge measures liquid parameters, which can include height, mass, temperature, density and pressure. These can then be used to determine the tank's content. Methods of establishing tank’s content, e.g. direct volume measurement, are not addressed in this standard.
The increasing need for continuous inventory control for security, effective site operation and environmental protection has made the use of tank gauges a practical solution for any tank installation. In addition, in the case of volatile products, the advent of vapour emission control makes access to the tank for dipping purposes increasingly difficult.
Automatic tank gauging systems in compliance with BS EN 13352, can interface with other measuring equipment and can be capable of providing one or more of the following functions:
- Basic gauging
Where the gauge is used solely to confirm that there is sufficient ullage to accept delivery of a quantity of product into the tank or where the gauge is used solely to measure the liquid contents of the tank.
- Inventory control
Where the tank contents information is used for stock accounting purposes. This can be transferred manually or, where the gauge forms part of an integrated system, automatically.
- Automatic reconciliation
Where the tank contents information is used together with measured additions to and depletions from the storage tanks contents in a defined time period to identify possible discrepancies.
- Automatic Calibration
Where the tank level information in connection with refuel volume is used to calculate tank calibration data.
BS EN 13352 guides you on level measurement performance requirements, temperature measurement performance requirements, classification and designation of gauge sensors, Test for water detection capability.
The test method for temperature and level performance specified in BS EN 13352 lets you determine:
- The maximum error in product level measurement
- The repeatability of product level measurement
- The maximum error in temperature measurement
What’s changed since the last update?
BS EN 13352:2012 supersedes EN 13352:2002. BS EN 13352:2012 includes some technical changes with respect to EN 13352:2002. These include:
- Test liquid changed
- Requirement concerning the compatibility of the materials in contact with fuels (including ethanol blends and biodiesel) and/or their vapour added
- Test equipment modified
- Test procedures modified to reduce the number of tests without affect the overall performances; some procedures are performed in climatic chamber
- Some notes about the performance of water indication added that may be affected if the fuel to monitor is an ethanol blend