TETHYS

UV300 Online Water analyzer

OVERVIEW
Parameter Specification
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The UV300 is a cost effective water analyser for applications focused on one or two parameters.
Mainly based on UV spectroscopy, well known for its stability and low operating cost, the UV300 can measure parameters like organic matter, nitrate, colour, aromatics hydrocarbons (PAH).A complementary module allows the measurement of PO4, Cl2, NO2, Fe, Al by colorimetric method and turbidity by laser diode. External probes can be added for physicochemical parameters like pH, ORP, dissolved oxygen and conductivity. Thanks to its automatic cleaning system and its extremely long life time lamp, the maintenance is roughly limited to the periodic refill of the inexpensive cleaning solution. A new web-based interface allows the control and the troubleshooting from internet on laptop, tablet or i-phone.

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. More...

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

Note: Click on image to view it large.

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.

UV300 Dimensional Drawing

Online water analyzer, UV300 - Parameter Specification

Parameter	Standard range Other ranges on request	Typical Repeatability For low values (<10% FS)	Accuracy On standard solution
UV254	0-200 Abs/m 0-600 Abs/m 0-2000 Abs/m	+/- 0.05 Abs/m +/- 0.15 Abs/m +/- 0.5 Abs/m	+/- 2%
COD by UV correlation	0-100 mg/l COD 0-2000 mg/l COD 0-20,000 mg/l COD	+/-0.05 mg/l COD +/- 1 mg/l COD +/- 10 mg/l COD	+/- 2%
BOD by UV correlation	0-100 mg/l BOD 0-1000 mg/l BOD 0-10,000 mg/l BOD	+/-0.05 mg/l BOD +/- 0.5 mg/l BOD +/- 5 mg/l BOD	+/- 2%
TOC by UV correlation	0-100 mg/l TOC 0-100 mg/l TOC 0-10,000 mg/l TOC	+/-0.05 mg/l TOC +/- 0.5 mg/l TOC +/- 5 mg/l TOC	+/- 2%
Nitrate	0-100 mg/l NO3	+/- 0.1 mg/l NO3	+/- 2%
Colour	0-100 Pt/Co 0-1000 Pt/Co	+/- 1 Pt/Co +/- 2 Pt/Co	+/- 2%
PAH (aromatics)	0-10 mg/l C6H6	+/- 0.01 mg/l C6H6	+/- 2%
Chlorophyll A	0-100 µg/l ChlA	+/- 1 µg/l ChlA	+/- 2%
Oil in Water	0-100 ppm OIW 0-1000 ppm OIW	+/- 0.1 ppm OIW +/- 1 ppm OIW	+/- 2%
Phosphate (PO4)	0-2 mg/l P-PO4 0-20 mg/l P-PO4	+/- 0.01 mg/l P-PO4 +/- 0.1 mg/l P-PO4	+/- 2%
Chlorine	0-5 mg/l Cl2	+/- 0.05 mg/l Cl2	+/- 2%
Nitrite	0-5 mg/l NO2	+/- 0.1 mg/l NO2	+/- 2%
Nitrite	0-5 mg/l NO2	+/- 0.1 mg/l NO2	+/- 2%
Aluminium	0 - 500 ppb Al	+/- 10 ppb Al	+/- 2%
Iron	0-2 mg/l Fe	+/- 0.02 mg/l Fe	+/- 2%
Silica	0-20 mg/l SiO2	+/- 0.1 mg/l SiO2	+/- 2%
Cr VI	0-2 mg/l Cr VI	+/- 0.04 mg/l Cr VI	+/- 2%
Turbidity (TSS by correlation)	0-10 NTU 0-100 NTU 0-1000 NTU	+/- 0.01 NTU +/- 0.1 NTU +/- 1 NTU	+/- 2%
pH	0-14 pH	+/- 0.01 pH	+/- 2%
ORP	+/- 2000 mV	+/- 1 mV	+/- 2%
Dissolved Oxygen (DO)	0-25 mg/l O2	+/- 0.1 mg/l O2	+/- 2%
Conductivity	0-2000 µS	+/- 1 µS	+/- 2%
External turbidity (TSS by correlation)	0-4 NTU 0-40 NTU		+/- 2% +/- 2%
External TSS	0-1500 mg/l 0-30000 mg/l	+/- 1% of reading or +/- 2 mg/l TSS +/- 1% of reading or +/- 2 mg/l TSS	+/- 2% +/- 2%
Temperature	0-80 °C	+/- 0.1°C	+/- 2%

Online water analyzer, UV300 - General Specification

Sample flow	Recommended: 0 - 5 l/min
Sample pressure	0 - 4 Bar (0 - 1 Bar with sampling peristaltic pump)
Sample temperature	0 - 80 °C
Wet parts material	Quartz, Polypropylene, Polyethylene, FPM (viton), PMMA
Measuring time	5 sec (except PO4, NO2, Fe, Cr(VI) : 3mn /, Cl2, Al : 2mn / SiO2 : 6 min)
Measurement interval	1 min to 720 min (If measuring time compatible) Physicochemical parameters may be continuous
Memory	5000 lines of measurements (up to 16 channels) with date and time
Consumption	Cleaning solution (5% sulfuric acid): 220 ml/day Reagent per measurement : Al : 0.5ml / Cl2, PO4, Fe, NO2, Cr(VI) : 0.6 ml / Sio2 : 1.2 ml
Maintenance interval	Recommended: 6 months to 1 year (except for refilling)
Power supply	90 - 264 VAC 50/60 Hz 40 VA - 12v DC 3A maxi
Screen	Colour TFT LCD 320x240 pixels with LED backlight
Communication	RS232, Modbus or HTTP/Web interface, compatible with Windows7, with Internet Explorer version 9, Nexus 7 tablet under Android with Opera version 12.10, Apple I-phone 4S with Safari RS485 for external probes (DO, TSS) USB WI-FI (IEEE802.11B) optional Ethernet (IEEE802.3) optional
Certifications	CE, EN 61010-1, EN 61326
Enclosure	Stainless steel with epoxy coating, IP65, wall mounting brackets
Dimensions	420 x 360 x 200 mm
Weight	15 to 20 kg depending on the configuration