Ballast Water - Municipal Water - Wastewater

online Chlorine sensors

our amperometric Sensor:

Simple Design

Rapidly measures both TRO and salinity and is installed directly in the ballast pipe. Simple design requires less maintenance, works in all salinities and does not use reagents or membranes.

Cutting Edge Technology

Halogen’s Multiparameter Sensor flexibility allows for a wide variety of applications with minimal modifications and is the only “flow-independent” sensor on the market.

“Although we have already delivered over 2,000 sensors for BWMS, having a DNV GL type approval on our Amperometric TRO sensor for hazardous or non-hazardous locations is excellent news.  Additionally its performance has already been evaluated by the Alliance for Coastal Technologies.  They found our sensor to perform the same or better than the more costly and maintenance prone traditional DPD method.”

– President of Halgen Systems, Michael Silveri  

quality assurance Approvals & Testing

We have met and exceeded all expectations.  See the results for yourself…


“We have done extensive testing of this unit and found it to be a robust marine grade field device. We like that the unit mounts right into the ballast water pipe. This avoids sample tubes, sample pumps, and reagents. Looking forward to seeing this on many marine vessels and ballast water treatment systems.

 - Kevin Reynolds - Managing Director of OneTank

“As technical engineer for AQUASTAR, I’d like to congratulate the Halogen Systems on their DNV GL type approval. We are impressed with the sensor reliability, simplicity, and low operational cost (no reagents). Looking forward to using it in our ballast systems.”

 - Jaebin Yi / Assistant Manager of the BWMS for AQUASTAR Co Ltd

“BWMS designers should look closely at the Halogen TRO sensor. It has lower installation/maintenance costs, is easier to configure, and has far fewer parts. Its accuracy is the same level as the DPD method. To comply with the SDL (system design limitation) IMO requires measurement and recording the TRO, salinity and temperature. Halogen Systems TRO sensor measures  it all.”

- Cheon-Il Kang / Director (TOMA) for Shin Woo E&T Co Ltd

“Veolia’s RWO unit received its IMO final approval for its ballast water treatment system using Halogen’s Amperometric TRO sensor. We are pleased with the sensors’ operation, reliability and performance.”

 -  Steffen Schloericke - the Chief Technician of RWO/Veolia

A Sensor that withstands seawater

Our reliable sensors are flow independent, self-cleaning, biofouling resistant, reagent free, and much more…


Accurate In All Waters

Measures five parameters compensating for changes in salinity

Measures Chlorine (TRO), ORP, Conductivity, Temperature, pH

Highly integrated chlorine sensor costs dramatically less than traditional discrete sensors

No Membranes or Reagents

Bare electrodes eliminating the need for DPD Reagents.


Electrodes are self-cleaning

Flow Independent Measurement

It is the only flow independent amperometric sensor

Direct Pipe Installation for Fast Response

Installs directly in a ballast pipe reports TRO levels in as little as 50 seconds.