Ground-breaking total trihalomethane in water analyser

Regulations limiting the levels of Disinfection By-Products (DBPs) such as Trihalomenthanes (THMs) in drinking water have made the ability to measure DBP levels essential.

The MS2000 is a unique on-line total trihalomethane monitoring system developed by Multisensor Systems Ltd. which provides low level measurements of THMs in water, efficiently and accurately.

Measuring total THMs with an accuracy of +/-10 ppb every hour, the MS2000 provides the confidence that is needed in a process control instrument which is vital in meeting regulatory and legal requirements.

The MS2000 is packaged in a small enclosure and requires no additional chemical reagents for operation. The system includes both the measurement instrument and the sample presentation system, to allow the simple fitting of the unit within existing facilities.

A variety of communications options can be provided including 4-20mA loop, wireless, Modbus and Profibus. The sensors can detect Total Trihalomethanes, or TTHMs including chloroform, bromoform, bromodichloromethane and dibromochloromethane.

The principle of operation of the MS2000 is the measurement of headspace gases from a sample tank containing the water to be measured. Through the use of Henry’s Law the concentration of gases in the headspace is proportional to the concentration of the substance in the water.

A sample of the headspace gases are passed across sensors which respond to the THMs in the headspace. This response is then analysed by the instrument and a concentration value is generated.