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Cargo Tanks
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Storage tanks on board
The levels of storage tanks on board of chemical tankers must be continuously monitored because of strict safety and environmental requirements. Overfilling or product discharge on deck or into the sea could have devastating consequences for human life and the environment. Especially the charge and discharge procedures have to be carefully supervised and under control. Continuous level measurement and redundant monitoring of conveyor pumps by means of level switches are essential parts of the safety system.
The internal pressure of the tanks is monitored continuously to prevent damage to the tanks caused by gauge or low pressure during charge and discharge procedures or by external temperature fluctuations. All measured values and alarm signals are visualised both in the loading control room and on the bridge.
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Continuous level measurement with VEGAPULS 63
Changing products, fluctuating temperature and different densities are a special challenge for the level meaurement in product tanks. The VEGAPULS 63 radar sensors are unaffected by temperature, pressure or gas stratification and deliver accurate measurement data right from the start. The measurement is insensitive to density fluctuations of the products because the sensor always measures the distance to the product surface. The PTFE coated antenna ensures optimum chemical resistance even for applications in aggressive products.
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Inert gas pressure with VEGABAR 52
The VEGABAR 52 pressure transmitter is particularly suitable for monitoring the gas pressure in product tanks. Its ceramic-capacitive CERTEC ® measuring cell enables precise monitoring (to within several millibar) of the internal tank pressure and even withstands pressure shocks due to rough seas.
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95 % and 98 % alarm with VEGASWING 63
To ascertain the 95 % and 98 % alarms, two VEGASWING 63 vibrating level switches are applied. The sensors operate independently of one another. The VEGASWING 63 is ideally suited for this application due to its rugged construction, the insensitivity of its vibrating fork and its reliable switching characteristics in conjunction with changing products. Its test key makes fast and reliable on-site checking possible.
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VEGAPULS 63
- non-contact measurement
- wetted parts of PTFE
- high chemical resistance
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VEGABAR 52
- high overload resistance
- high long-term stability
- rugged ceramic measuring cell
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VEGASWING 63
- high chemical resistance
- adjustment-free
- product independent
- safe function even in case of adhesive liquids
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