Marine certified 4-20mA pressure transmitters are essential for monitoring critical systems on ships. These specialized instruments, approved by classification societies like Lloyd’s Register and DNV, ensure reliable pressure measurement in demanding marine environments. This page explores the features, benefits, and applications of these vital components in maintaining vessel safety and performance.
Ship lubrication oil pump pressure transmitter with DNV/GL marine approval certificate - DNV/GL certified DMK457 pressure transmitter for reliable monitoring of ship lubrication oil pumps. 0 to 6 bar range, and 4-20mA output.
Seawater and crude oil compatible 75 bar pressure transmitter for marine use - Marine approved 4-20mA output pressure transmitter for measuring a mixture of seawater and crude oil up to 75 bar gauge in a zone 1 hazardous gas area.
12 bar g sea water compatible 4-20mA pressure sensor for use on marine vessels - Marine certified pressure transmitter for measuring seawater pressure up to 12 bar gauge on a marine vessel.- 2 bar g sea water pressure transmitter for marine engine cooling system - 4-20mA (2 wire) transmitter for monitoring sea water pressure up to 2 bar gauge on the cooling system of a marine diesel engine.
- Marine certified oil pressure sensor with 2.5 bar g range - Marine approved version pressure sensor for use on Diesel up to 2.5 bar at a maximum media temperature of 120°C and environment temperature of 70°C.
- Lube oil pressure sensor for use on ship engines to measure up to 10 bar - Marine approved pressure sensor for use on lube oil up to 10 bar with a maximum media temperature of 120°C and environment temperature from 0 to 70°C.
- Seawater pressure transmitter with 10 bar range and marine certification - Seawater pressure transmitter with following specs, 0-10 bar g, 4-20mA output, 1/2" connection, seawater resistant and marine certified.
- Sea water desalination system offshore submersible pressure transmitters - 10 bar and 100 bar pressure transmitter for use in sea water desalination processes.
Water reclamation system 6 bar range pressure transmitter for marine use - Marine certified pressure transmitter for use in water reclamation system with a flush diaphragm to discourage build up of solids on the diaphragm face.
Marine and IS approved, -1 to 3 mWG compound range pressure transmitter - Pressure transmitter with Marine type approvals and a compound pressure range of -1000 to +3000 mWG.- Marine approved atmospheric pressure sensor - Atmospheric pressure sensor for ambient pressure measurement in marine applications, on board a ship and in the engine room.
Featured Product Series
- DMK457 Marine Approved Pressure Transmitter
DMK 458 Seawater Low Range Pressure Transmitter
LMK 487 Submersible Ballast Tank and Draught Level Pressure Transmitter- DMP457 Marine Approved Pressure Transmitter
Related Product Types
- Sea Water Resistant Ship Use Certified Pressure Transmitters - These pressure transmitters are specifically engineered to handle the harsh conditions found in shipboard and marine environments. Constructed with corrosion-resistant wetted parts suitable for seawater and certified for marine use
- Marine Approved Pressure Transmitters - Marine approved pressure transmitters certified for use on marine vessels to measure pressure as part of the ship management system.
Pressure transmitters are crucial components in various shipboard systems, providing accurate pressure measurements for liquids, vapors, and gases. To ensure the safety and reliability of these systems, especially in harsh marine environments, pressure transmitters must meet stringent requirements and undergo rigorous certification processes.
Marine Classification Societies and Approvals
Marine classification societies play a vital role in ensuring the safety of ships and marine structures. These independent organizations establish and maintain technical standards for the design, construction, and operation of vessels. Some of the leading classification societies include:
- Lloyd’s Register (LR)
- Germanischer Lloyd (GL)
- Det Norske Veritas (DNV)
- American Bureau of Shipping (ABS)
- China Classification Society (CCS)
When selecting pressure transmitters for marine applications, it is essential to choose devices that have been certified by the same classification society that audited and registered the vessel. This ensures compatibility and compliance with the specific standards and regulations applicable to the ship.
4-20mA Current Loop Output
Pressure transmitters for marine use typically employ a 4-20mA current loop output signal. This widely accepted standard in industrial automation offers several advantages in marine environments, including:
- Immunity to Noise: The 4-20mA current loop signal is less susceptible to electrical noise and interference, which is prevalent in shipboard environments due to the presence of various electrical and electronic equipment.
- Long Distance Transmission: The current loop allows for reliable signal transmission over long distances without significant signal degradation, making it suitable for large vessels.
- Fault Detection: The 4mA minimum current provides a “live zero” indication, enabling easy detection of sensor or wiring faults.
Applications
Pressure transmitters are used in a wide range of shipboard applications, including:
- Engine Room Monitoring: Monitoring lube oil pressure, fuel oil pressure, and cooling water pressure in the main engine and auxiliary machinery.
- Cargo Monitoring: Measuring the pressure of liquid or gaseous cargo in tanks to ensure safe loading and unloading operations.
- Ballast Systems: Monitoring ballast tank pressures for proper vessel stability and trim control.
- HVAC Systems: Controlling the pressure of air conditioning and ventilation systems for optimal passenger and crew comfort.
- Firefighting Systems: Monitoring water pressure in fire suppression systems to ensure their readiness in emergencies.