What does the VOC Industrial Effluent Discharge actually measure?

It measures the concentration of VOCs in water against a target gas standard (usually toluene). Other compounds can also be targeted.

How often does the instrument provide a reading?

The instrument provides continuous readings via the 4-20 mA output.

What is the reported value?

The reported value is Total VOCs in effluent water, in ppm, in the range 0.1 to 40 ppm.

What is the principle of operation?

The system samples the air above the effluent/sewage continuously; this air passes through the sensor which reacts with VOCs and measures their concentration, reporting via the analogue output.

How is the analyser calibrated?

The instrument is factory calibrated against toluene.

What are common target gases?

Petroleum Gas, Methane, Iso Butane, Kerosene, Ethanol, Diesel, Iso-butylene, Toluene, Acetone, Xylene, Heptane, Benzene, Methanol Mercaptan.

What is the required maintenance? Is it expensive?

The instrument requires a service every 6 months to replace low-cost components such as activated carbon filters and ensure there are no air leaks.

What is the warranty?

Every instrument comes with a 1-year warranty from the shipment date.

How does the analyser alert the user to high concentrations of gas?

It incorporates relays which switch at user-definable thresholds. These can be hardwired to valves, pumps, or connected to SCADA systems for rapid process control or shutdown.

MS1210-S Oil in Water and Hydrocarbon Monitor | VOC Monitor (0.1-40 ppm)

Name: MS1210-S Medium Range Oil in Water Analyser
Brand: Multisensor Systems
SKU: MS1210-S
Rating: 5 (2 reviews)

Overview

The MS1210-S is an industrial oil in water analyser designed to monitor outflows from industrial facilities, cooling systems, and detect fuels and other VOCs in drains and wastewater networks. Pollutants such as BTEX, TCE, PCE, vinyl chloride, 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1-dichloroethylene, and styrene can lead to regulatory fines and process contamination. The analyser uses a contactless sensing system with very low maintenance requirements.

Applications

Monitoring for oil in water contamination
Detect VOC contamination in industrial wastewater
Monitor drain and stormwater systems for flammable liquids
Surface water systems for fuel pollution
Monitoring solution for air, land remediation, and industrial sites
Detect VOC breakthrough in carbon beds
RO membrane protection
Measurement of VOCs in process water

Features and Benefits

No sensor contact with water: low maintenance, no cleaning
No reagents: low running costs
Measures both Polycyclic Aromatic Hydrocarbons (PAHs) and VOCs
Electronic Nose: not affected by turbidity
Calibrated for specific substances to monitor known spills
Catches VOC chemical spills, not just hydrocarbons
Alarms to SCADA and other communication interfaces

For more details on operation, see the FAQs tab.

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Industrial Effluent: The Problem

Discharge of VOCs into wastewater is a persistent issue in engineering, chemical, food and beverage, and other industrial processes.

Spills can lead to illegal discharges, pollution, fines, and PR issues.

Even purification plants can fail or be overwhelmed, risking non-compliance.

The Cost of Not Monitoring

Regulators may impose heavy fines, and media attention can exacerbate incidents. Installation of online TOC analysers is often required, which have high reagent and maintenance costs.

The Solution

Installing a VOC Industrial Effluent Discharge Monitor allows early notification of rising VOC levels, enabling timely interventions and avoiding compliance issues. Its contactless measurement ensures:

No reagents required
Minimal maintenance between services
Robust and reliable
Cost-effective monitoring

For drain applications, the MS4000-S can sample gases directly from the drain as a lower-cost solution, with slightly reduced accuracy.

Specification

PARAMETER	OPERATIONAL	REQUIREMENTS	NOTES
	Minimum	Maximum
Detection Range	0.1 ppm	40 ppm	Total VOCs
Display Range (Default)	0 ppm	40 ppm	Configurable on commissioning
Repeatability	-2%	+2%	Measured against a 10 ppm toluene solution at standard temperature and pressure; accuracy can be improved at target concentrations using bespoke calibration.
Accuracy	-10%	+10%
Measurement Frequency	Continuous
Ambient Temperature	0 °C / 32 °F	50 °C / 122 °F	Climate control may be required depending on process conditions
Water Temperature	1 °C / 34 °F	50 °C / 122 °F
Analog Input	4 mA	20 mA	Scalable to required range; max load 750 Ω, loop-powered or instrument-powered
Analog Output	4 mA	20 mA
Analog Output Isolation	5 kVAC / 400 VDC
Relay Current		5 A	Max. 250 VAC or 30 VDC; 3 relays: Alarm 1, 2 and Fault, with NO and NC contacts
Interface	Touchscreen		With advanced reporting capabilities
Communication Protocols	Modbus (Optional)		Profibus / HART / Foundation Fieldbus on request
Data Storage	μSD Card / Windows PC		6 months
Instrument Case	IP65		Powder-coated stainless steel
System Weight	30 kg / 66 lbs
Sampling Tank	316 Stainless Steel
Flow Limit Switch			Option available on request
Water Flow Rate	2 l/min / 0.52 US gpm
System Dimensions	650 x 960 x 400 mm / 25.6 x 37.8 x 15.8 inches
Supply Voltage	90 V AC / 9 V DC	240 V AC / 36 V DC	50 Hz or 60 Hz
Power Consumption		45 W	Typical 20 W during operation
Consumables	6 months: filter and restrictor

Service: Maintenance is required every 6 months. The air pump should be replaced every 18-36 months as needed. Services should be performed by a trained technician who has completed the standard Multisensor Systems training.

View Datasheet

Documents

Title	Type	Format
MS1210-S - Oil in Water Analyser	Datasheet	PDF
Lac Mégantic disaster increases awareness of water treatment plant vulnerability	VOC	PDF
Monitoring of a River Water Intake for Petroleum Contaminants	VOC	PDF
Monitoring of Reservoir Feed for Hydrocarbon Contamination	VOC	PDF
Protecting RO Membranes at a Pet Food Manufacturer	VOC	PDF
Monitoring of a borehole to detect potential fuel contamination	VOC	PDF
VOC detection in an Industrial Estate, UK	VOC	PDF
Monitoring a High Iron and Manganese Content Borehole for Hydrocarbons	VOC	PDF
Spill detection system at an engine manufacturing plant	VOC	PDF
Monitoring VOCs in Wastewater in an ATEX 2 Environment	VOC	PDF
Monitoring for VOCs in the Panama Canal	VOC	PDF
Monitoring for VOCs in water reclaimed from a petrochemical plant	VOC	PDF
VOC Monitor protects WTP inlet	VOC	PDF
Monitoring VOC contamination in the exhaust gas from an industrial water treatment plant	VOC	PDF
Monitoring of spring water for VOC contamination	VOC	PDF
Monitoring the intake of a desalination plant for hydrocarbon contamination	VOC	PDF
Monitoring of hydrocarbons at the effluent of a food manufacturing facility	VOC	PDF
Monitoring of seawater for VOC pollution following accident in Vietnam	VOC	PDF
Monitoring of a river intake in Virginia for pollution events	VOC	PDF
Ten VOC Analysers for the Monitoring of GAC Filters at a Remediation Site	VOC	PDF
Monitoring Spring Water in the Alps following a Diesel Spill from a Pumpy	VOC	PDF

FAQs

What does the VOC Industrial Effluent Discharge actually measure?: It measures the concentration of VOCs in water against a target gas standard (usually toluene). Other compounds can also be targeted.
How often does the instrument provide a reading?: The instrument provides continuous readings via the 4-20 mA output.
What is the reported value?: The reported value is Total VOCs in effluent water, in ppm, in the range 0.1 to 40 ppm.
What is the principle of operation?: The system samples the air above the effluent/sewage continuously; the air passes through the sensor which reacts with VOCs and measures their concentration, reporting via the analogue output.
How is the analyser calibrated?: The instrument is factory calibrated against toluene.
What are common target gases?: Petroleum Gas, Methane, Iso Butane, Kerosene, Ethanol, Diesel, Iso-butylene, Toluene, Acetone, Xylene, Heptane, Benzene, Methanol Mercaptan.
What is the required maintenance? Is it expensive?: Service is required every 6 months to replace low-cost components such as activated carbon filters and ensure no air leaks.
What is the warranty?: All instruments include a 1-year warranty from shipment date.
How does the analyser alert the user to high concentrations of gas?: It has relays that switch at user-defined thresholds. These can be hardwired to valves, pumps, or SCADA systems for rapid response.