A globally operating shipping and logistics company recently decided to refurbish a number of ships with newer technology.
The initial set-up included several single function signal conditioning modules. Single function transmitters are designed for specific tasks. If they fail when the ship is at sea, and the staff does not have a replacement in stock, getting a replacement from shore can often be both time consuming and costly. The company had experienced this issue on several occasions in the past. The company wanted a solution that included a more universal transmitter covering a wide range of applications – and with the approvals, in this case either DNV or GL, to be used at sea.
A specialist suggested a universal transmitter like DRST-UN or DRST-UR to the project team. The transmitter is multi-functional – has a universal AC or DC power supply, offers high galvanic isolation and high EMC immunity, can measure almost any analog or temperature signal, and provides output for current and voltage, which are typical output signals in marine applications.
In addition, the transmitter is designed according to strict safety requirements, including UL, FM, DNV, and SIL.
Putting the Standard to the Test
The project team agreed to test the transmitter. The test showed that the transmitter fulfilled the requirements:
The device covered all the needed applications
The device had the right approvals
The device was easy to use both in relation to mounting and programming
The device has a 5 year warranty
During the test the team was introduced to and used the detachable display like DRSL-DISPLAY for programming, process calibration, and error diagnostics and was impressed with the build-in simulation functions used when testing the different applications. The test also showed that the team could save a great amount of time using the digital calibration function with calibrating positions of different valves.
New Site Standard
The transmitter passed the test, was
specified for the project and was
selected as new site standard. The
company has subsequently experienced
smoother operation and been able to
save on spare parts inventory.