Online TSS Water Analyzer

Vasthi Instruments are global leaders in manufacturing of Online TSS Water Analyzer and have been supplying instruments to customers worldwide, Our multidisciplinary team of scientists, physicians, engineers, and regulatory consultants with decades of global experience brings you the quintessential mechanism that provides complete safety accuracy and durability.

Vasthi Instruments was formed with visionary thinking and innovative ideas resulting in innovative products and solutions. We enhance our product quality by the continuous process of research and development. We have WIDE range of models to suite various site conditions and processes.



Online TSS Water Analyzer that provides digital sensor technology and covers Dissolved Oxygen, Total Suspended Solid(TSS), Liquid Density and Conductivity measurements. Online TSS Water Analyzer adopts the pulse xenon lamp as light source and the ultraviolet optical fiber spectrometer as detector is capable for real-time gathering of absorption spectrum of water pollutants ranging from 200nm to 800nm and real-time analysis of the content of water pollutants by means of chemometric algorithm technology. Online TSS Water Analyzer includes two parts: the control box and the probe. The control box is installed in the analysis cabin and the probe is submerged in the water and fixed by means of mounting bracket the two parts are connected via cable. The control box provides power supply to the probe and at the same time receives the measurement value from the probe and displays them on the interface.


  • It requires no reagents, so it can save operating costs and will cause no secondary pollution
  • The response is quick (about 2 seconds). It is suitable for the occasion where high real-time performance is required, such as industrial process analysis
  • Free from the interference of chloride ion
  • It adopts full-spectrum measurement and chemometric algorithm analysis, which in comparison with the simple dual wavelength background subtraction technology, can measure more parameters and is less likely to be influenced by the compositional change of waste water
  • All components are independently researched and developed
  • It adopts pulse blowing method to clean the pollutants on the two window surfaces.

The instrument probe in the water measures organics in the water by means of xenon lamp. The calculation of spectrum obtained after each measurement will produce a measured value, which will be transmitted to the control box and displayed

  • Optical fiber on the main interface. One measurement only takes several dozens of seconds. Meanwhile, in the interval of measurement, the instrument will be automatically cleaned to prevent contaminants from being deposited on the surface of the lens
  • Model: V.WATER – 8001


Measuring Parameters

COD, BOD, UV254, Nirate, TOC, DOC, Turbidity, TSS, Color, etc.

Measuring Range

As Customer required


UV/visible differential optical absorption spectroscopy, wavelength range 200-800nm


230V AC, 30w


2% F.S.

Zero drift

<1% F.S.

Range (COD)

0-50-200mg/l, greater range can be customized


The shortest 60 seconds, the cycle can be set

Probes Depth


Optical Path

Can be adjusted according to the site condition

Working Temperature

5°C – 45°C

Enclosure Rating

IP65 (secondary instrument)




RS232/RS485 (Baud rate can be set), 2×4 -20ma output

Probe Size


Probe Weight


Interface digital

Ethernet (TCP/IP), RS-232 or RS-485 (Modbus RTU)

Power Supply

12-24 VDC (±10%)

Output data

Power consumption

Power consumption

Environmental conditions

Sample temperature

+2…+40 °C

Ambient temperature

+2…+40 °C

Inflow velocity


Performance Characteristics

Maintenance effort

Typically < 0.5 h/month

Calibration/ maintenance interval

24 months

System compatibility

Modbus RTU


1 year (EU:2year)


Max. pressure with sub Conn

30 bar

Max. Pressure with fixed cable

3 bar

Max .pressure in flow cell

1 bar,2-4 L/min

Protection type

IP 68

Structural design

Housing material

Stainless steel (1.4571/1.4404)or titanium(3.7035)

Weight Stainless steel

~3kg (with 10mm path)

Weight titanium

~3kg (with 10mm path)