Water Monitoring System
User Manual
Page
8
of 82
Ver. 1.1 – Revision March 2022
2.
Introduction
2.1 About the system
The G6200 water monitoring system is a modular system that continuously
monitors scrubber water. With its robust and durable design, the system
can be used in both open, closed, and hybrid systems and includes a de-
bubbler, which avoids interference due to sample degassing.
Compared to our G6100 version, the G6200 WMS is simpler, with no need
for a pump cabinet unit or a pressure reduction unit. The G6200 WMS only
requires water from scrubber pumps or a free-standing supply pump.
The G6200 WMS has a wide water pressure and flow range, making it
suitable for both the inlet and outlet of the scrubber. The ranges are highly
flexible, meaning different pumps such as impeller pumps or hose pumps
can be connected to the system. Having a WMS on board is an extremely
effective way of ensuring compliance with international regulations. The
G6200 WMS is fully compliant with MEPC.259(68) & MEPC.340(77).
The system design and choice of materials used are based on more than
one thousand systems installed on various vessel types. The system is easy
to service, includes on-board verification and does not include a costly
sensor servicing program.
2.1.1 PAH
The polycyclic aromatic hydrocarbons module measures the content of
PAH in water as specified by MEPC.259(68) & MEPC. 340(77). The module
uses a UV technique and detects PAH concentration in μg/l (ppb) in water.
A special measuring arrangement ensures a reliable and repeatable
measurement while keeping the need for cleaning at an absolute minimum.
A unique feature is local validation which ensures a reliable measurement of
PAH.
The PAH measurement is compensated for the effects of turbidity by means
of a turbidity compensation formula and input from the turbidity sensor
module G6120.
