Vaisala Xmitter in MAN Diesel & Turbo 2 Stroke Diesels

Vaisala MMT330 Transmitter Approved for Installation in MAN Diesel & Turbo Two-Stroke Diesel Engines

MAN Diesel & Turbo, the world market leader for large diesel engines used in ships, has approved the Vaisala HUMICAP?? Moisture and Temperature Transmitter MMT330 Series for installation in the lubricating oil system of their MAN B&W two-stroke diesel engines.

MAN Diesel & Turbo has introduced on-line condition-based water-in-oil monitoring to their MAN B&W marine two-stroke diesel engines, in order to protect their critical components. Severe damages can be avoided by monitoring wear in the major bearings and water contamination in the lubrication oil.

In order to identify suitable vendors, MAN Diesel & Turbo conducted an extensive testing of commercial water-in-oil sensors. The goal was to verify the measurement accuracy of the sensors under conditions similar to those in two-stroke marine diesel engine installations.

The test results were also evaluated on the basis of the accuracy of two alarm level values – a high alarm of water activity 0.5 and 0.9.

“The engine is the heart of a ship. Ensuring its operation is a truly business-critical task. It is great that a leading engine manufacturer has identified Vaisala as a reliable supplier with products to suit their needs,” says Senja Paasimaa, Regional Market Manager at Vaisala.

Vaisala is a global leader in environmental and industrial measurement. Building on more than 70 years of experience, Vaisala contributes to a better quality of life by providing a comprehensive range of innovative observation and measurement products and services for meteorology, weather critical operations and controlled environments. Headquartered in Finland, Vaisala employs over 1400 professionals worldwide and is listed on the NASDAQ OMX Helsinki.


MAN Diesel & Turbo is the world market leader for large diesel engines for use in ships and power stations, and is one of the three leading suppliers of turbo machines. The company employs some 12,500 persons, and is represented in more than 150 countries. The head office is situated in Augsburg, Germany.


Further applications information:

Senja Paasimaa
Regional Market Manager
Tel. +358 40 5820 585,
Email: senja.paasimaa (a)