Monitoring VOCs in wastewater in an ATEX 2 environment - Case Study

APPLICATION

Monitoring  wastewater  coming  into  a  treatment plant  to  detect  explosive  levels  of  VOCs  from surface runoff.

CUSTOMER

Wastewater plant, UK

PROBLEM

Waste Water entering a treatment lant is a com-bination of domestic and commercial waste wa-ter  and  surface  run  off.  All  of  these  could  have high levels of fuel in them, but particularly during high rainfall washes fuels into drains.These  high  levels  have  the  potential  to  produce explosive  gases  withing  the  enclosed  screen building.

PRODUCT

MS1200-ATEX, 4-20mA output, audible and  vis-ual alert output.

WHY MULTISENSOR?

The customer needed a contactless system with ATEX 2 certification.

INSTALLATION FACTS

The MS1200-ATEX is a version of the MS1200 certified to ATEX 2 level. The sample is taken from above the channel via a pipe without any sampling tank. The drain is an open channel, and the instrument provides an alarm, triggering audio and visual alarms, when VOC levels higher than those set by the client are detected.

Additionally, this system has a high-level flow protection where, in the case of the inlet water being very high, it switches automatically to an alternative intake above the raised water level.