Oil in water analyser for direct insertion into process line


direct insertion probe
automatic ultrasonic cleaning
fast response

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Improved oil in water measurements.

Significant steps have been taken to improve oil in water measurements. These systems from Advanced Sensors have been able to operate in hazardous areas for many years with zero maintenance.

Similar to the EX-100 and EX-1000, these systems use a laser induced UV fluorescence technique to monitor trace levels of oil in water. The EX-100P monitors the total fluorescence, while the EX-1000P provides an integral spectrometer to identify different oil contaminants or hydrocarbon liquids. Both systems can monitor from low ppb to 20,000 ppm, and are well suited to monitoring water pollution prior to discharge or re-injection. These versions of the analyser continuously measure a sample stream, with a probe inserted directly into a main process line. A variety of pressure rated flanges are available. The probe may be inserted directly into the process line without flow conditioning or flow control, and is recommended for applications where rapid oil trending information is required.

The use of an automatic ultrasonic cleaning method allows the EX-100P to provide reliable and accurate measurements for many years without requiring maintenance or consumables, making the operating costs for these systems extremely low. Many users have reported zero maintenance over several years.

Download Oil in water product range brochure



Oil in water

Measurement principle

Laser Induced UV fluorescence


0 to 20,000 ppm

User may select a range from 0 to 10 ppb to 0 to 20,000 ppm


Automatic ultrasonic


± 1 % of measurement range


> 99 %

Response time

< 1 second, continuous results

Process temp. range

0 to 100 °C (option to 180 °C)

Process pressure range

0 to 35 barg (180 barg optional)

Process Flow Rate

up to 10 m/s

Ambient temp. range

-20 to 55 °C


Interactive touch screen

Hot insertion/extraction


Conduit length

3 m to 50 m

Spectrometer Specification (1000 model only)

Emission wavelength range

400 to 1,100 nm


0.5 nm



CE marked

Ingress protection

IP66 Enclosure, IP68 Probe


Exd II 2G IIB T4


Class 1 Div 1


Shipping weight

Approx. 85 Kg including stand



1120 H x 600 W x 640 D mm (optional variants)

Clear space

500 mm front and rear

Material (wetted parts)

316 SS (option of hastalloy, inconel, CR25, CR 22, titanium, monel)

ATEX box

Aluminium (316SS optional)

Pressure to cell

0 to 35 BarG (design pressure 180 BarG)

Process connection

2" ANSI flange (options available)


Power voltage

110 or 230 VAC

Power frequency

50 or 60 Hz

Power consumption

60 W normal, 300 W peak

Instrument air

Not required



4 to 20 mA passive (modbus over HART optional)

Alarm relay 1

Volt free relay configurable to system alarm or ppm setpoint

Alarm relay 2

Volt free relay configurable to system alarm or ppm setpoint

Digital 1


Digital 2

2 wire ADSL


Wi-fi (optional)

Remote access

VNC, master remote manager

Internal data storage

> 10 years

All specifications subject to change


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