Marine production provides very harsh tank level measurement conditions, the instrument must be able to avoid corrosion from the salt water and still be of a quality that is suitable for measuring in a tank of fish for human consumption. Drexelbrook have installed countless RF admittance sensors on ocean trawlers providing precision level measurement and longevity even in the salt water tank at sea.

1. AMETEK Nihon Drexelbrook AMETEK Singapore Pte. Ltd. AMETEK Precision Instruments Europe
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DREXELBROOK
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Fill and Empty control in Seafood Processing Tank
The Application
Factory trawler ships process surimi at
sea. The fish fillets are mixed in a large
tank with distilled water and are then
pumped into forms that are frozen. These
frozen blocks are then processed further
and sold as imitation crab, scallops, etc…
The Problem
The processing operator needs to know
how much water to add to the tank, and
then when to stop adding the fillets. After
the batch is finished and is pumped
out of the tank, there needs to be a
low level shut down to stop the pump.
The harsh conditions on a trawler, salt
water wash downs, and the heavy slurry
being measured requires a robust level-
measuring product. Mechanical devices
such as floats or tilt switches would not
survive these extreme conditions.
The Solution
AMETEK Drexelbrook solved the problem by installing three RF point level sensors
on each tank. The sensors are installed close to the tank wall so as not to interfere
with the mixer. One sensor indicates when to stop adding distilled water; the second
is used to indicate when to stop adding fillets. The third sensor is used as a low level
to shut off the pump when the tank is empty. The Cote-Shield™ circuitry allows the
switch to operate properly even when heavily coated with fish slurry. The sensor
housings are coated with a corrosion resistant plastic coating to help them survive in
the harsh, salt-water environment.
Benefits
· Batch measurement helps ensure product consistency.
· Process is more efficient.
· No routine maintenance required.
No moving parts to wear out or hang up.
*Consult factory for higher temperature or pressure.
Other Solutions:
• Potable Water • Waste Water • Fuel Level • Bilge Level
Typical Uses:
• Continuous Level • Point Level • Waste Management
• Inventory Management • Overfill Protection • Regulatory Compliance
Fillet
Stop Fill
Distilled Water
Stop Fill
Low Level Pump
Shut Down
Surimi Processing Tank
Paddle Wheel
Mixer
Food Processing Application
420-16-001