风速和风向突然发生变化则存在着潜在危险，并可能产生严重后果。为保持船只沿航向运行，准确、实时的风力数据是至关重要的。

维萨拉为人们需要的天气条件和应用程序提供种类各异的精确、可靠以及强大的风传感器。维萨拉超声风传感器是杯状和叶片状机械传感器的最佳替代品。超声波传感器不含移动部件，几乎无须维护。也有热处理型号。 维萨拉风传感器及显示器方便与船桥系统和流程集成，以支持高效和及时的决策。美国国家气象局依赖于维萨拉超声波技术。

为确保航行安全，国际海洋组织（IMO）正在制定与风测量设备有关的新规定及性能标准。维萨拉风传感器及指示器旨在满足国际海洋组织的标准。

When wind direction or speed suddenly change while a vessel is trying to maintain its position, it may be difficult to take corrective action fast enough. Accurate, real-time wind data is vital for Dynamic positioning (DP).

Vaisala provides a wide range of accurate, reliable and robust wind sensors for demanding weather conditions and applications. Vaisala ultrasonic wind sensors are an excellent alternative to the cup and vane mechanical sensors. Ultrasonic sensors contain no moving parts and are virtually maintenance-free. A heated model is also available.

Vaisala wind sensors and displays are easy to integrate with ship's bridge systems and processes to support efficient and timely decision-making The US National Weather Service relies on Vaisala ultrasonic technology.

Optimize maintenance and extend equipment lifetime by measuring water contamination in oil online

Water in lubrication and hydraulic systems deteriorates oil performance, causes corrosion and can ruin polar additives. Leading marine engine manufacturers cite water contamination in oil as a significant ship maintenance challenge and have set specific requirements for allowable limits of moisture in oil.

Vaisala’s moisture and temperature transmitter MMT330 accurately measures moisture in oil online, giving a real-time picture of the oil’s condition. Thus, corrective actions can be taken before water damages critical machine parts. MMT330 is compatible with any lubrication and hydraulic oil type and works independent of oil age and temperature. Go to the specifications of MMT330.

Please contact our Industrial Measurement sales to discuss further.

Improve reliability and prevent downtime by measuring dewpoint

To keep compressed air system operating properly the air must be sufficiently dry. Excess moisture can lead to water condensation, which can result in corrosion, ice formation, and valve and equipment failure.

Vaisala’s dewpoint transmitter DMT340 helps to ensure the compressed air is dry enough to secure reliable system operation. Our transmitter offers unparalleled accuracy and long-term stability. Even water spikes don't affect the Vaisala Drycap® sensor incorporated in the DMT340. Go to the specifications of DMT340.

Please contact our Industrial Measurement sales to discuss further.

More efficient control by measuring moisture in inlet air

Humid air is fed into engines both to optimize engine efficiency and to minimize NOx emissions. However, since water condensation must be avoided, highly precise humidity information is needed.

Vaisala’s humidity transmitter HMT337 incorporates patented sensor technology enabling accurate air measurements near saturation. It provides accurate humidity readings even after condensing situations, without the need for a sensor drying period normally required by conventional humidity instruments. Go to the specifications of HMT337.

Please contact our Industrial Measurement sales to discuss further.

Get accurate ambient air data at once

The tightening of NOx emission regulations has lead to an increasing need for monitoring and emissions reporting.

Vaisala's pressure, temperature and humidity transmitter PTU300 provides at once all the engine inlet air data needed for the correction of the measured emission values to the standard conditions used in reporting. Go to the specifications of PTU300.

Please contact our Industrial Measurement sales to discuss further.

• Vaisala has received a formal certificate from Det Norske Veritas (DNV) which applies to the MMT330, HMT330, DMT340 and PTU300 product families (Rules for Classification of Ships, High Speed & Light Craft and Det Norske Veritas’ Offshore Standards). The products are proven to withstand the harsh conditions in ship machinery rooms.
• Our MMT330, HMT330, DMT340 and PTU300 transmitters use the same platform with same user interface. You can have them up and running in a minute or less.
• Robust design and low maintenance requirements of our instruments provide low life-cycle costs.
• Vaisala sensors are designed and produced in-house in our own cleanroom.
• MAN Diesel & Turbo has approved Vaisala’s moisture in oil transmitter series MMT330 for their two-stroke diesel engines’ lubricating oil systems.