The DMK457 marine-approved pressure transmitter is a vital component for ensuring the reliable operation of lubrication oil pumps on ships. These pumps play a crucial role in maintaining the health and function of critical machinery, from main engines and generators to auxiliary equipment like winches and cranes. The DMK457 provides continuous and accurate pressure monitoring, enabling early detection of potential issues that could lead to costly downtime or even catastrophic failures.
Specifically designed for the harsh marine environment, the DMK457 boasts DNV and GL certification, meeting the stringent safety and performance standards required for shipboard applications. Its robust construction, featuring a 316L stainless steel housing and process connection, ensures exceptional resistance to corrosion from saltwater and aggressive lubrication oils. This durability translates to a longer service life and reduced maintenance requirements, minimizing operational costs and maximizing vessel uptime.
At the heart of the DMK457 is a ceramic Al2O3 diaphragm, chosen for its exceptional resistance to wear and tear, even when exposed to the high temperatures and pressures encountered in lubrication oil systems. This material selection ensures the long-term accuracy and stability of the pressure readings, vital for maintaining optimal pump performance and preventing damage to expensive machinery.
The transmitter’s G1/4 DIN3852 process connection ensures compatibility with standard lubrication oil pump installations on ships. Its 4-20mA output signal provides a universally recognized and reliable method for transmitting pressure data to the ship’s monitoring and control systems. This seamless integration allows engineers to track pump performance in real-time, identify potential issues, and schedule preventative maintenance before problems escalate.
The DMK457‘s IP68 rating guarantees complete protection against dust and prolonged immersion in water, making it suitable for installation in challenging locations within the engine room or other machinery spaces. The 3-meter TPE cable offers flexibility in installation while maintaining a robust and watertight electrical connection.
By providing accurate and reliable pressure data, the DMK457 contributes to the safe and efficient operation of shipboard lubrication oil pumps. This, in turn, helps prevent costly breakdowns, ensures the smooth running of essential machinery, and ultimately contributes to the overall safety and efficiency of the vessel.

DMK457 Marine Approved Pressure Transmitter
- Pressure Range: 0 to 6 bar
- Range Type: Positive Gauge (atm to +P)
- Output Signal: 4 – 20 mA, 2-wire
- Accuracy: 0.5% FS
- Electrical Connection: TPE cable IP68 stainless steel 316L housing (permanent immersion)
- Cable Length: 3
- Cable Length Units: metres (m)
- Process Connection Material: Stainless Steel 316L (standard)
- Process Connection: G1/4 DIN3852
- Diaphragm Material: Ceramic Al2O3
- Media Exposed Seals: FKM