User Guide
MES 1003 WMS
Doc no. 100837-MAN – Rev. E1 – Rev. date 2022-10
© Danfoss IXA A/S | Page 5
1.3.
Product Description
The MES1003 operating principle is based on the standard MEPC.340(77) which in overall terms defines how to measure
the three required substances: PAH, Turbidity and pH.
The system consists of Washwater Analyzing Unit (WAU) and one of two Sample Units: WSU which offers a sample pump
and WSR which offers pressure reduction.
The WAU contains all components which control and perform the measurements. This includes the computer which
controls all operations in the system and the measurement chamber with the three sensors measuring PAH, Turbidity
and pH. The measured values will be recorded and reported to the user and is available through the display on the front
door and through the Modbus.
The WSU contain the de-bubbler, temperature sensor and relay for the sample pump. The temperature sensor is used to
report the temperature in the sampling point. The de-bubbler is a passive component which removes any bubbles in the
sample water as they interfere with the turbidity measurement. Turning the pump on/off is controlled by the computer
in the WAU. Two protection devices are built into to WSU in order to protect the pump and motor from breaking down in
case of lack of sample water and motor overload.
The WSR contain the de-bubbler, temperature senor and a pressure reduction valve. The temperature sensor is used to
report the temperature in the sampling point. The de-bubbler is a passive component which removes any bubbles in the
sample water as they interfere with the turbidity measurement. The pressure reduction valve reduces a high water
pressure at the input to a lower pressure at the output suitable for the WAU. The WSR also contains a safety function
which will lead water to the bilge in case of a pressure reduction valve fault.
The MES1003 interfaces to external systems through Modbus TCP/IP. A local display enables the user to perform setup
and control the system.
Illustration 1: Washwater Monitoring System
Display for local
operation
Measurement
chamber serviceable
from the outside
Internal and external
interfaces
Sampling Units:
WSU offering a sample pump
WSR offering pressure reduction
Washwater Analyzer Unit
(WAU) containing sensors
and computer
