Oil in Water (OIW) Analyzer

MS1200 Touchscreen Version Touchscreen Version of
the MS1200


The MS1200 is an on-line oil in water analyzer which provides low level measurements of hydrocarbon, oil and VOC concentrations in water. Some applications include:

  • Monitor water abstraction points such as raw river water, wells and reservoir water
  • Monitoring for oil in water contamination
  • Detect VOC contamination in wastewater
  • Monitor drain and stormwater systems for flammable liquids
  • Surface water systems for fuel pollution
  • Offer a monitoring solution for air, land remediation and industrial applications
  • Detect VOC breakthrough in carbon beds
  • RO membrane protection
  • Measurement of VOCs in process water

For a quick introduction to the system, please watch the video below:

Key Benefits

  • No sensor contact with water: low maintenance, no sensor cleaning
  • No reagents: low running costs
  • Electronic Nose: not affected by turbidity
  • High sensitivity: ideal for potable water
  • Can be calibrated for specific substances: used to monitor known spills
  • Catches VOC chemical spills not just hydrocarbons
  • Alarms to SCADA and other communication interfaces

Technical Specifications

Spec Value
Range* 0 – 3000 ppb in water
Accuracy** +/-10%
Repeatability +/-2%
Sampling Frequency 5 – 20 Minutes
User Interface 8" resistive touchscreen (optional)
Data Storage µSD Card and Internal Memory
Data Interface 4 – 20 mA, Profibus, Modbus, Wireless, USB
Alarms x2 Via Relay Drivers, Levels User Definable
Operating Temperature Range 0 °C– 40 °C(contact us for wider temperature range)
Water Temperature Range 1 °C– 40 °C
Power Consumption 10 W Continuous (90-240 VAC or 24 VDC)
ATEX Zone 2 (Optional)
Reagents None
Carrier Gas None
Consumables GAC filter media, Air Filter every 6 months
Validation Every 6 Months
*Other ranges available. Please contact Multisensor Systems.
**200 ppb toluene in water, 25°C
Standard MS1200 Version Standard Version of
the MS1200

Related Case Studies

Monitoring a Water Intake to a Water Treatment Works

Read Case Study

Protecting RO Membranes

Read Case Study

Monitoring a High Iron and Manganese Content Borehole for Hydrocarbons

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Monitoring for VOCs in water reclaimed from a petro-chemical plant

Read Case Study

Principle of Operation

MS1200 utilizes a contactless measurement technique based on Henry’s Law, sensing headspace gases or volatiles in the sampling tank provided, and provides a measurement system with very low maintenance requirements.

Thanks to the clever design and technology the sensor never touches the water. This results in reduced drift, virtually no fouling, no sensor cleaning and very low maintenance.

The MS1200 is accurate to low ppb concentrations and its wide dynamic range allows it to be used in a wide variety of environments.

The concentration of Volatile Organic Compounds and Water Vapour in the headspace increases until equilibrium is reached with the concentration in the water (Fig. 1)

A sample of gas is then taken from the headspace and the response analyzed to provide a concentration in ppb of contaminants in the water (Fig. 2).


Title Type Format
MS1200-SYS Oil in Water VOC Analyzer Datasheet PDF
MS1200-SYS Oil in Water VOC Analyzer Touchscreen Datasheet PDF
MS1200-SYS Installation (Contact Us) Manual PDF
MS1200-SYS Operation (Contact Us) Manual PDF
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