Oil in water analyser for side stream measurements


side stream flow
automatic ultrasonic cleaning
rapid speed of response

Download a datasheetRequest a quoteCall us


Improved oil in water measurements.

The EX-100 was introduced in 2005 and, due to the patented ultrasonic cleaning technique, was the first oil in water analyser that did not require routine maintenance. Both the EX-100 and the EX-1000 use a laser induced UV fluorescence technique to determine oil in water concentrations, to monitor water pollution.

The EX-1000 includes an integrated spectrometer, allowing identification of different oil contamination types. This is useful in applications where various compressor oils, lubrication oils or a combination of aliphatic and aromatic hydrocarbons are present. The EX-1000 alerts the operator to the changing conditions. A reference calibration can be stored in the instrument for each of the oil types present.

These systems from Advanced Sensors have been able to operate in hazardous areas for many years with zero maintenance. The EX-100 and the EX-1000 can monitor from low ppb to 20,000 ppm oil and are well suited to monitoring oil in water levels prior to discharge or re-injection. This version of the analyser continuously measures a sample stream (or side stream) from the main process line. This allows valves to be closed automatically to homogenise the sample (using ultrasonics) and make highly accurate and uniform readings.

In addition to cleaning, the ultrasonic system is used to homogenise the sample, ensuring that oil droplet size is the same throughout the sample, which improves the repeatability of the measurement.

Download Oil in water product range brochure



Oil in water

Measurement principle

Laser induced UV fluorescence


Side stream (or bypass) flow


0 to 20,000 ppm

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


Automatic ultrasonic

Sample homogenisation


Oil droplet size

Automatic compensation


± 1 % of measurement range


> 99 %

Response time

< 1 second, continuous results

Process temp. range

0 to 100 °C (option to 180 °C)

Ambient temp. range

-20 to 55 °C


Interactive touch screen

Spectrometer Specification (1000 model only)

Emission Wavelength Range

400 to 1,100 nm


0.5 nm



CE marked

Ingress protection



Exd II 2G IIB T4


Class 1 Div 1


Shipping weight

Approx. 77 Kg including stand, valve and chamber



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)

Sample flow rate

0 to 25 l/min. (optional 0 to 1000 l/min.)

Process connection

1" ANSI flange (options available)


Process stream viewing window provided as standard


Power voltage

110 or 230 VAC

Power frequency

50 or 60 Hz

Power consumption

60 W normal, 300 W peak

Instrument air

5 to 8 BarG (for pneumatic valve - electrical valve optional)



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

Compare this with similar products