UV300

Main method : UV-visible spectroscopy

• The most common measurements (UV254, NO3, Colour, PAH) are based on the UV-VIS spectroscopy that brings fast and stable measurements with a simple hydraulic circuit for a high reliability.
• All theses measurements are done within 5 seconds. The turbidity of the sample is automatically compensated by a dual-wavelength method as shown on the figure.
• The UV source is a xenon flash lamp specified for 109 flashes that corresponds to more than 10 years of life time with one measurement every minute.
• For PO4, Cl2, NO2, Al, Fe, SiO2, a colorimetric module has been specially developed to reach a very small volume flow cell that reduces the quantity of reagent to preserve the environment and to reduce the operating cost. A multi-wavelength LED source assumes a colour and turbidity compensation with an unlimited life time.
• The patented flow cell allows very high level of suspended solid without clogging for all the optical measurements.
• Physico-chemical measurements like pH, ORP, dissolved oxygen, conductivity can be added to the internal measurements by using external probes. The dissolved oxygen probe is based on fluorescence method for a lower maintenance and higher stability. Turbidity can also be measured by external probes.
• Three external turbidity probes (high, medium and low range) are also available if the measurement need to be done in situ, for example before filtering.

UV absorbance spectroscopy

1 : xenon lamps,
2 : flow cell,
3 : beam splitter,
4 : peak filter,
5 : peak detector,
6 : reference filter,
7 : reference detector

UV fluorescence principle

1 : xenon lamps,
2 : excitation filter,
3 : flow cell,
4 : emission filter,
5 : photomultiplier,
6 : reference photo detector

Colorimetric method principle

1 : led,
2 : flow cell,
3 : photo detector,
4 : reagent pump,
5 : reagent tank

Laser diode turbidity principal (nephelometric)

1 : Laser diode (650 nm or 850 nm),
2 : flow cell,
3 : Photo detector

Auto cleaning principle

1 : Auto Cleaning Technique,
2 : 5% H₂SO₄ Solution,
3 : Adjustable auto-cleaning period,
4 : Auto zero done on cleaning solution

Patented flow cell

1 : Allows very high level of suspended solid without clogging for all the optical measurements making it suitable for industrial & municipal waste water application.

• The patented flow cell allows very high level of suspended solid without clogging for all the optical measurements making it suitable for industrial and municipal waste water application. The turbidity is automatically compensated by a dual-wavelength method.
• Suitable for sample with high chloride content
• Wetted parts of flow cell make it suitable for most corrosive sample

Robust industrial probes

All the probes are specially designed for harsh environments with high level of suspended solid.

ORP/pH probe

Dissolved oxygen probe

pH differential probe

Total suspended solid probe

Turbidity probe

Conductivity probe

User-friendly interface

The colour touch screen and intuitive interface available in 8 different languages (Chinese, English, French, German, Italian, Portuguese, Spanish, Turkish) makes very easy to test or configure the analyser. Many test functions allows to test and troubleshoot each element of the analysers (light signal, pumps, solenoid valves, etc...) to setup quickly a maintenance diagnostic.

Communication

The RS232 port supports the MODBUS protocol to transmit each Standard channel value to a SCADA system. Additional parameters are available like status code, error code, calibration values and pumps run time. Basic 4-20 mA output modules can be plugged on the main board for each Standard channel, in the limit of 12 modules. A USB port enables to download on any USB key the last 5000 recorded measurements as well as a diagnostic file containing the configuration and useful information for remote troubleshooting. The new web interface makes possible to drive remotely the analyser from any computer, tablet or i-phone with a web browser. For this, an optional Wi-Fi or Ethernet module is added inside the analyser to connect it to an existing network with an internet gateway. The recorded measurements file can be imported to Excel for graphs or other treatments. The software of the analyser can be upgraded by connecting a USB key.

Multiplexing system

When different streams need to be analysed, for example inlet and outlet of a plant, an optional multiplexing system delivers relay contacts to control external electric-valves or external pumps.

Up to 6 different streams can be selected

The Standard channels can be either duplicated (each one having its own 4-20mA output or MODBUS register), or measured sequentially to fit with the maximum of 16 Standard channels (a MODBUS register tells which stream is currently being measured).

Sampling system

The UV300 can adapt to many different kind of sampling depending of the application : surface water, drinking water, process water or wastewater.

If the water is already pressurized, the sample can be admitted directly inside the analyser with a maximal pressure of 4 bars. Otherwise an optional built-in peristaltic pump, synchronised with the measurement to extend the tubing life time, allows to take the sample directly from a tank located up to 6 meters below the analyser. For demanding applications with long distances, another peristaltic pump in a separate enclosure is proposed as an option. For some applications on river water or wastewater where two sampling pumps are necessary, the UV300 delivers a relay contact to synchronise the primary pump. The delay and running time of each pump can be adjusted easily in the parameters menu of the analyser.