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Arjay Engineering

Ppm Oil in Water Analyzers, Monitors and Control Instruments

2851 Brighton Road,
L6H 6C9 Canada

Arjay Engineering produces ppm oil in water analyzers, monitors and control instruments for both industrial and municipal applications. These include the petrochemical industry for upstream and downstream wastewater and oil/water separator monitoring and control in applications such as:

  • Produced water
  • Storm water
  • Oil water knockout treaters
  • Bilge water

Ppm oil in water analyzers, monitors and spill and sheen detectors

Arjay Engineering provides ppm oil in water analyzers, oil on water detection and oil/water separator interface and emulsion alarms. For ppm monitoring, UV fluorescence is typically used. The Arjay light scatter approach is perfect for affordable cooling water leak alarms. Interface and oil thickness monitors employ a capacitance technique for reliable low cost monitoring.

For produced water monitoring, theHydroSense 2410 is the model of choice. This analyzer uses UV fluorescence to target the aromatics in the water. Through a simple site calibration, the aromatic response is correlated to a total oil reading in ppm.

Oil/water separator controls and oil spill alarms

The Level-Ease series of capacitance controls are used to monitor and control the oil water interface levels within tanks. The robust probe design does not have optics or moving parts that can foul.

High pressure and a wide temperature range make these an ideal choice for monitoring and control of processes, pumps, and valves.

The Arjay float sensors continuously monitor for oil separated to the surface of water. Simple on/off alarms and oil thickness monitors are used to alert when the accumulation of surface oil requires attention, or to shut down pumps that may inadvertently pump oil to drain.

Level controls

The Arjay capacitance level controls have a lengthy and reassuring background of reliability. Arjay Engineering offer basic probe mounted transmitters and on/off switches.

The Level-Ease series is available to meet level display requirements, and has a remote control with multiple relay points and proportional outputs.

These can be coupled with any Arjay probe for continuous and point level applications of liquids and solids.

Bilge and ballast water monitoring

Any of the Arjay HydroSense series are suitable for leak alarming. The 2410 is the industrial non-contacting design for untreated or turbid wastewater.

The 3410 and 3420 are the more economical choices and can be used for filtered wastewater or water that is free of suspended solids and turbidity. For bilge and ballast oil content separator applications the 2410 and 3410 carry IMO approval for MEPC.107(49)

Heat transfer systems can contaminate the water with oil through pinhole leaks. The Arjay controls will monitor for these leaks. The HydroSense 2410 and 3410 specifically target petroleum oils where animal or vegetable oils do not want to be alarmed.

The HydroSense 3420 will respond to any free oil type.


There are many approvals and certifications carried by Arjay products. They vary by product but include: ISO 9001:2000, ABS (American Bureau of Shipping), IMO (International Maritime Organization), CSA, UL, CE, CRN, and ABSA.

Certain products can be used in zone 1 and 2, division 1 and 2 hazardous locations through their third party approved explosion proof packaging (Ex d), non-incendive design (Ex n), intrinsic safety barriers (Ex i) or by a purging pressurization option (Ex p and EEx p).

Specialty systems

Arjay can provide custom panels and systems to suit your needs. Specialty racks can be designed to accommodate accessories and support instrumentation for your application.

Level Control Solutions

Arjay offers a range of proportional level monitoring solutions and switches for liquid monitoring and interface control applications.

Oil Separation Profiler

Arjay uses capacitance probes to monitor the dielectric of the liquid at multiple points in the tank.

Trace Oil-in-Water Analysers

On offshore production platforms, these are typically found after the final oil / water separation phase and prior to the produced water discharge.

HydroSense 4410-OCM Oil-in-Water Monitor

The cutting-edge Hydrosense 4410-OCM system from Arjay Engineering offers reliable, real-time flow-through parts-per-million (ppm) monitoring of both petroleum and non-petroleum oil in water.

Foam Monitoring

Arjay uses capacitance probes to monitor the gaseous vapour phase of the vessel.

Oil-in-Water Separators and Monitors

This white paper contains details of Arjay's products, including oil in water monitors, level controls and oil / water separator monitors.

Arjay Launches New Cooling Water Monitor System

Arjay Engineering is pleased to announce the company has completed the beta testing phase for its new HydroSense 4410 trace oil in water monitor, which is intended for use with cooling and washdown waters in power stations.

Arjay to Exhibit at OTC 2015

Arjay is pleased to announce that it is to participate at Offshore Technology Conference (OTC) 2015, which will be taking place from 4 to 7 May 2015 in Houston, Texas, US.

Arjay Engineering Exhibiting at OTC 2013

Arjay Engineering, a designer, manufacture, distributor and seller of process and environmental controls and instruments for multiple applications, is exhibiting at the Offshore Technology Conference (OTC) 2013.

Arjay Engineering to Attend Trade Shows

Arjay Engineering will have a presence at three industry events in 2012. The company, which produces ppm oil in water analysers, monitors and control instruments for both industrial and municipal applications, will visit conferences in the US, Scotland and the United Arab Emirates.

Arjay Engineering Releases Product Overview White Paper

Arjay Engineering's product overview #AR-OV-09 brochure provides information on a range of instruments, including probe and remote-mounted switches, transmitters and controllers, area leak alarms and instruments for dry pump and phase detection.

Arjay Engineering to Exhibit at OTC 2011

Arjay Engineering is pleased to announce it will be exhibiting at the Offshore Technology Conference (OTC). Held annually at Reliant Center in Houston, OTC is the world’s foremost event for the development of offshore resources in the fields of drilling, exploration, production, and en

Arjay Engineering Releases Free White Paper

Arjay Engineering, a supplier of instruments for both industrial and municipal applications, has released a free white paper on the Offshore-Technology website. Arjay Engineering's product overview #AR-OV-09 brochure provides information on a range of instruments, including probe and r