UV500-Compact Online Water Analyser

Online Water Analyser

The UV500-Compact is a on-line water analyser based on a high resolution UV-visible spectrograph.

It allows to monitor simultaneously many different parameters for waste water treatment plants or river monitoring stations with an excellent stability and low operating cost. The same spectrograph can measure organic matter, nitrate, colour, turbidity and phosphate. A complementary UV-visible fluorescence module allows the measurement of aromatics hydrocarbons (PAH). Nephelometric turbidity by visible or infra-red laser diode is also available. The full UV-visible spectrum can also be used to monitor specific chemical process making the UV500-Compact a ideal instrument for chemical plants. External probes can be added for physicochemical parameters like pH, ORP, dissolved oxygen, conductivity and turbidity. 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 and eventually reagents depending on the parameters.

Features
Specifications

UV-visible spectroscopy

2048 pixels high resolution spectrograph scanning wavelengths from 180 nm to 750 nm is the master part of the UV500-Compact. Direct absorbance measurement for UV254, COD, BOD, TOC, NO3, Colour PO4 and Cr VI brings fast and stable measurements with a simple hydraulic circuit. Factory predefined or local multi-point calibration allows to get readings of COD, BOD and TOC under the UV alternative method for compatible applications. UV spectroscopy brings faster results than conventional methods like COD, BOD, TOC with much less maintenance once the correlation is dertermined.
The patented flow cell allows very high level of suspended solid without clogging. The turbidity is automatically compensated by a dual-wavelength method.
The UV source is a xenon flash lamp specified for 10^9 flashes that corresponds to more than 10 years of life time with one measurement every minute.
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.

Measuring principle by absorbance

1 : spectrograph,
2 : beam splitter,
3 : patented water flow cell,
4 : xenon lamps

UV fluorescence principle

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

Laser diode turbidity principal (nephelometric)

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

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 9 different languages (Chinese, English, French, German, Hungarian, 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. An acid resistant protection film on the screen assumes an efficient long term protection.

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 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. 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 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 UV500-Compact 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 UV500-Compact 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.

Online water analyzer, UV500-Compact - 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 0-1000 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 (NO3)	0-100 mg/l NO3	+/- 0.1 mg/l NO3	+/- 2%
Colour	0-100 Pt/Co 0-1000 Pt/Co	+/- 0.2 Pt/Co +/- 2 Pt/Co	+/- 2%
PAH (aromatics)	0-10 mg/l C6H6	+/- 0.01 mg/l C6H6	+/- 2%
Oil in Water	0-100 ppm OIW 0-1000 ppm OIW	+/- 0.1 ppm OIW +/- 1 ppm OIW	+/- 2%
Phosphate	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%
Chromium IV	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 0-400 NTU		+/- 2% +/- 2% +/- 2%
External TSS	0-1500 mg/l TSS 0-30000 mg/l TSS	+/- 1% of reading or +/- 2 mg/l TSS +/- 1% of reading or +/- 2 mg/l TSS
Temperature	0-80°C	+/- 0.1 °C	+/- 2%

Online water analyzer, UV500-Compact - General specification

Sample flow	Recommended : 0 - 5 L/MIN
Sample pressure	0 – 4 Bar (0 - 1 Bar with sampling peristaltic pump)
Sample temperature	0 °C to 80 °C
Wet parts material	Quartz, Polypropylene, Polyethylene, FPM (Viton), PMMA
Measuring time	5 sec (except PO4 : 3 min)
Measurement interval	1 min to 720 min 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 for PO4: 2 ml per measurement
Maintenance interval	Recommended: 6 months to 1 year (except for refilling)
Power supply	90 - 264 VAC 50/60 Hz 80 VA
Screen	Colour TFT LCD 640x480 pixels with LED backlight
Communication	RS232 with MODBUS protocol RS485 for external probes (DO, TSS) USB WI-FI (IEEE802.11B) optional Ethernet (IEEE802.3) optional
Certifications	CE, EN 61010-1, EN 61326e
Enclosure	Stainless steel with epoxy coating, IP65, wall mounting brackets
Dimensions	425x420x227 mm
Weight	15 to 25 kg depending on the configuration

Online water analyzer, UV500-Compact - Accessories

Sampling pump
Product code: P

Sampling peristaltic pump for unpressurized water
Built-in on the left side of the enclosure
Flow of about 0.6 litre/min
Discontinuous operating to increase tube lifetime

Sampling pump
Product code: P-EXT

External Peristaltic sampling pump for unpressurized water
Flow of about 940 ml/min
Heavy duty brushless motor
Discontinuous operating to increase tube lifetime

Input modules
Product code: IN4-20-500

4-20 mA input module
Isolated 4-20 mA input
Impedance: 100 Ohm

Input modules
Product code: LOGIC500

Double logical inputs module
Input no 1 : external pulse command for measurement
Input no 2 : measurements inhibition
Isolated 0 – 48 V DC inputs
Impedance: >10 Kohm

Output modules
Product code: OUT4-20-500

4-20 mA output module
Isolated 4-20 mA output
Active output, Max load 500 Ohm

Output modules
Product code: RELAY500

Relay module
Contact rating: 2A/220V

Communications
Product code: WIFI500

Wifi Interface
Connection to wireless WIFI network
Secured data transfer (WEP keys)

Communications
Product code: ETHER500

Ethernet interface
Ethernet 10 base-T (IEEE 802.3)
Secured data transfer (WEP keys)

Communications
Product code: MTI133

Phone modem
Industrial modem 33,6 Kb/s V34+
DIN rail Mounting
Power supply 24V from the analyser

Communications
Product code: GSM

GSM modem
Dual band (EGSM 900/1800 MHz)
Integral SIM card reader
R & TTE approved

UV500-Compact