marine approved sensors

Automation systems and sensors for marine applications - temperature, pressure, level

In this blog post, we present dedicated solutions of a maritime industry standard, such as DNV GL or Bureau Veritas, tailored to specific applications such as engine or engine room temperature measurement, ship water treatment and ballast water management. Read more!

Shipbuilding – difficulties in accurate temperature control

The shipbuilding industry places complex and comprehensive demands on measurement sensors. Devices for this industry must be characterised by a safe process, long-term stability and be insensitive to salty and humid sea air. In addition, they should be resistant to strong vibrations or shocks, air temperature and climate changes and dust.

Equipment used on board ships must be able to withstand, in particular, salt air, strong vibrations and temperature

Ship sensors – standards and marine approvals

Various country-specific guidelines (e.g. GL, Det Norske or Bureau Veritas) describe design and material standards for ship construction and operation. These standards ensure that the equipment used meets the shipbuilding industry requirements described above.

Only the selection of approved sensors provides confidence in their quality, predictability and safety of operation at sea. In order for a sensor to be approved for marine use, it must undergo meticulous testing.

Our products, such as temperature sensors or pressure transmitters for marine applications, are approved by DNV GL or Bureau Veritas - you can fully trust that they will do their job.

Bureau Veritas approval of JUMO Marine Temp sensor

Temperature measuring devices for heating and cooling systems

Marine temperature sensors and automation systems for air conditioning

The right temperature on board is a key aspect for the comfort and safety of passengers and crew. We offer a complete system, including marine temperature sensors and pressure transmitters, as well as PLCs for central plant control.

Temperature and pressure sensors for heat exchangers

Heat exchangers, which are technical devices used to transfer thermal energy from one medium to another, are used to heat or cool the holds of ships. In some cases, they are also used to recover heat and exhaust gases from engines.

High temperature sensor such as the JUMO Marine Temp or the JUMO dTRANS p20 pressure transmitters are designed to regulate and monitor this process.

JUMO temperature and pressure sensors are suitable for use in heating and cooling systems on ships

Sensors in marine design for engine rooms

Monitoring the temperature of ship engines

Ships generate extreme loads on engine and compressor components. The high temperatures that arise in the process mean that certain mechanical components must be continuously monitored.

For temperature sensing in this aplication, we recommend the JUMO VIBROtemp screw-in temperature probe, which stands out for its robustness in demanding installation situations. It allows accurate temperature values to be obtained for the motor and lubricating oil.

Pressure and temperature measurements in the compressor

Temperature and pressure are important values measured in the compressor. JUMO Pt100 sensors and pressure transmitters from the JUMO MIDAS series are the perfect choice for maintaining a safe process.

Marine engine temperature alarm

The JUMO temperature sensor detects if the temperature is too high or low and gives the control system a signal if the set values have been exceeded.

Temperature sensors and pressure switches for monitoring engine and compressor performance

Temperature, level and pressure in gas and oil tanks

Liquefaction of gas can take place at a pressure of around 10 bar while cooling the medium. Due to the pressure and temperature load of the material, gas and oil tanks are made of special stainless steel and insulated from the hull. Typically, spherical tanks that rise halfway out of the ship's deck line are used to transport oil or LNG.

LNG pressure measurement at low temperatures

The pressure inside the tank must be constantly monitored, as the liquefaction process is strongly dependent on it. In order to monitor the pressure inside the tank at such low temperatures, the medium to the pressure transducer must be heated to -40 °C via the evaporation lines. The JUMO dTRANS p20 pressure transmitter copes perfectly with this demanding measurement task.

Proposal for JUMO measuring system for gas and oil tanks on board ship

Marine sensors for wastewater treatment on ships

Water is crucial on ships and must always be treated. JUMO probes for pH, conductivity, pressure and level measurement support this process while ensuring consistently high water quality.

Preparation of drinking water on board ship

The reverse osmosis process is a key component of the desalination system for the preparation of drinking water. Seawater is pushed through a semi-permeable membrane under high pressure. It acts like a filter - allowing only certain ions and molecules to pass through.

Because seawater has such a high salinity, a pressure of 60 to 80 bar is required. To ensure safe operation of the system, the pressure before reverse osmosis must be monitored. The obvious choice for this task is the JUMO MIDAS C18 SW pressure transmitter.

Wastewater treatment on board a ship

Depending on the size of the vessel, wastewater is stored or treated directly on board. Vessels that store wastewater dispose of it in appropriate disposal facilities that are available in ports. Those that process wastewater directly use membrane or biological treatment.

The level must be monitored in all systems to prevent overflowing of the effluent tank. Another important aspect is the measurement of pH and conductivity, necessary to check water quality before and after treatment. A complete measurement system is available from JUMO.

JUMO system for water treatment on ships

Ballast water management systems

Cruise ships, large tankers and bulk carriers consume huge amounts of ballast water taken from coastal waters in the region. This typically contains a variety of biological materials, including plants, animals, viruses and micro-organisms. These are often non-native, exotic species that can cause extensive ecological and economic damage to aquatic ecosystems. Reliable measurements from JUMO products support the treatment of ballast water.

Tank management with JUMO sensors (including level and temperature sensors) provides complete access to control and monitoring in tanks of all types of vessels and offshore installations.

Control systems (e.g. JUMO mTRON T) allow monitoring of alarm and separate parameters such as level, pressure, temperature, flow. The system controls valves, pumps, actuators, motors and other devices as required. The user interface can be customised to any application and layout preferred by the customer.

JUMO also supplies conductivity sensors and chlorine sensors to measure ballast water quality.