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FA-7 is a new generation of immersion sensors for measurement of oil or hydrocarbons in water based on the UV
fluorescence principle.
When excited by a light beam at a specific wavelength, some compounds re-emit light at a longer wavelength.
Since there are very limited number of chemicals such as PAH that have fluorescence signatures, this method gives a highly selective measurement with much higher sensitivity than the conventionally used infrared-based technology.
This makes it possible to determine even the slightest traces of PAH's.
The FA7 sensor connects to a GDC enabling both stationary use (shafts,flows or piping) and mobile use.
An optional clamp-on wiper for automatic cleaning of the optical window minimizes maintenance downtime.
Specifications
Measuring System
Light Source: Xenon flash lamp + filter(254nm)
Detector: Photo diode + filter (360nm)
Principle
Fluorescence
Measuring Range
0 to 50 ppb, 500 ppb,
0 to 5 ppm, 50 ppm, 150 ppm
0 to 500 ppm
Accuracy
±3% Rd. or ±1% F.S.
Respond Time
T90 < 10s
Measuring Interval
5 s
Operate Pressure
3 bar, 1 bar in Flow cell 2 to 4 L/min
Operate Temp.
32 to 104 °F (0 to 40 °C)
Power*
24 VDC, Max. 30W
Interface
RS485 Modbus RTU
Output
4 to 20 mA
Auto Cleaning
Optional Clamp-on Wiper
Housing
Material: 316L, titanium is Optional; >IP68 Submersible
Dimension
Dia. 2.68” (68 mm), Length 10.28” (261 mm)
Weight
7.7 lbs (3.5 kg) with 30” Cable
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☑ In-situ application
☑ Direct immersion or bypass flow-cell installations
☑ Complete measurement within 10 seconds
☑ No reagents
☑ Compact size
☑ High sensitivity and selectivity
☑ Compensating algorithm for light
☑ Low power consumption
☑ Low cost and ownership
☑ Optional Automatic cleaning wiper
Typical Applications
➤ Produced Water
In Oil & Gas industry, Produced Water quality monitoring is required because oil and grease must be measured by on-line sensor before discharge. A reliable and low mainte-nance measuring system of UV fluorescence achieves this goal.
➤ Condensation or cooling water survey
The concentration of hydrocarbons in condensation or cooling water is a critical parameter on refineries and chemical plants.
➤ Wastewater monitoring
The effluents of refineries and chemical plants have to stay below limits to meet the environmental regulations..
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FA7-OW PAH or Oil-in-Water Sensor
Measuring Range
-1 0 to 500ppb
-2 0 to 150 ppm
-3 0 to 500 ppm Other range contact factory
-C10 10” Cable
-C20 20” Cable
-C30 30” Cable More length please contact manufactory
FA7-OW
-1
-C30