TW-100® Water Distribution Monitor

Drinking Water Analyser

TW-100®

HORIBA TW-100® Drinking Water Analyser is a process water quality monitoring system designed for drinking water and water distribution plants. The TW-100® Drinking Water Analyser uses a reagent free method for online monitoring of turbidity, color, free chlorine and pressure resulting in a significant reduction of the ownership costs. TW-100® Drinking Water Analyser is a field proven device that requires minimal maintenance and improves process control.

Brochure

Exclusive features

Drinking Water Analyser
TW-100®

TW-100® Drinking Water Analyser is a compact system is equipped with sensors to monitor simultaneously and continuously four water quality parameters.

Automatic cleaning	Adjustable measurement frequency
Variable sample volume	Automatic zero calibration
Internal water leak detection and alarm	Data storage to compact flash card

Specifications

Drinking Water Analyser
TW-100®

Analytical Performances
Technology Transmitted light absorption, polarography, diaphragm pressure sensor

Repeatability Turbidity – full scale ±2.5%
Color full scale ±5.0%
Free chlorine full scale ±2.5%
Water pressure full scale ±1.0%

Calibration Formazin standard solution or polystyrene latex standard solution
Standard color solution
DPD colorimetry
Standard pressure gauge
Sampling System
Sample inlet

Flow 50 to 100 mL/min
Pressure 0.1 to 0.75 MPa maximum
Temperature 0 to 40°C

Sample Preparation Flush the sample water before starting the system.
Install a bypass for the pipe to which the system is attached.
If there is any possibility that the sample water could freeze, please protect the system from cold temperature.

Automatic cleaning via wipers (continuous cleaning)
Pleasant interface
Display LCD display: 320 x 240 dot B&W graphic LCD with backlight (touch panel type)

Communication Interface: RS-232C compliant

Analogue Outputs 4 standard, 7 as maximum
DC 4 to 20 mA, insulated output (no insulation between parameters), maximum load resistance 600Ω

Input Signal Cleaning start, zero calibration start, error check sequence start and error water sampling start: initiated with closed contact input
Maximum 100 W, DC 26 V, maximum 13 mA

Output Signal Power off: Output when power is off.
Batch alerts: Cell temperature error, compensation temperature error, cell wiper error, internal communication error, water leak, battery error, upper and lower limit of measurement, light source error, zero calibration, span calibration, analyzer error.
Maintenance: Output when the system is in maintenance or calibration mode.
AC 125 V, 0.3 A, DC 30 V, 1 A (depends on resistance load), each output COM is independent.

Data Logger Measurement values are stored in the unit’s data memory. Data can be transferred to a CF card.
Intervals 1 minute or 1 hour
Capacity 1 minute intervals for 10 day’s data, 1 hour intervals for 1 year’s data.
Construction
Enclosure For indoor installation

Wetted materials Munsell 5PB8/1, unit case is made of SUS

Weight Approx. 15 kg (Measurement unit only)

Power supply AC 100 V to AC 230 V, ± 10%, 50/60 Hz

Consumption AC 100 V to AC 120 V: 120 VA, AC 100 V to AC 230 V: 150 VA

Installation requirements Install on a flat surface without vibration shocks.
No dust, mist, or corrosive gases in the atmosphere.
Lower air pressure.
No direct sunlight.
Ventilated air.
2,000 m or less above sea level.

Measured Parameters

Drinking Water Analyser
TW-100®

TW-100® Drinking Water Analyser user friendly interface features touch screen panel for efficient operations and display of measured values at a glance.

PARAMETERS	RANGE
Turbidity	0 to 2 FTU, 0 to 4 FTU
Color	0 to 10 CU, 0 to 20 CU
Free chlorine	0 to 2 mg/L
Water pressure	0 to 1 MPa

TW-100® Installation

Drinking Water Analyser
TW-100®

Measurement Principle

Drinking Water Analyser
TW-100®

Turbidity Measurement
HORIBA TW-100® Drinking Water Analyser applies transparent light absorption method to calculate turbidity by measurement the attenuation of transparent light by suspended particulates in sample water. The transparency of incident light into loaded water decreases by the reflection and scattering. The decrease is proportional to the concentration of particles in water. This phenomena is similar to Lambert – Beer Law, which is the relationship between light and color.

Colour Measurement
The transmitted light (wavelength of 375 nm) measurement method implemented in the TW-100® Drinking Water Analyser allows measuring the changes in water colours within the brownish-yellow range by absorptiometry at a .

Residual Chlorine Measurement
Residual chlorine is active chlorine remaining in water from the result of tap and pool water disinfection or chlorine treatment for sterilization and deodorization in the food industry. In water, chlorine (Cl2), hypochlorous acid (HClO) and hypochlorite (ClO-) are balanced according to a pH value and the compound formed from these three is called residual chlorine. Therefore, if a reduction reaction occurs in an electrode soaked in residual chlorine solution, it will generate a current flows in the external circuit. This current is proportional to the amount of residual chlorine in solution, so you can measure the concentration of residual chlorine in sample water by measuring this current.

pH Measurement
When measuring pH, the meter must be calibrated using a standard solution. There are several kinds of standard solutions. For normal measurement, two standard solutions (with a pH of 7 and 9) are sufficient to accurately calibrate the meter.

Conductivity Measurement
Conductivity is an index that expresses the ease with which electric current flows through a material. Conductors are categorized either as electron conductors, such as metals and
other substances which use free electrons to conduct electricity. Or ion conductors, such as electrolytic solution or fused salt, which use ions to conduct electricity. This section deals with the kind of conductivity that pertains to ions, especially the conductivity of electrolytic solution that uses water as the solvent.

Online Monitoring Solution

Drinking Water Analyser
TW-100®

Drinking Water Network

Distribution Networks

TW-100® Drinking Water Analyser is designed for integration in water quality monitoring stations (WQMS) within drinking water production and distribution networks to enable REAL TIME monitoring of turbidity, color, free chlorine and pressure.

Quality Control at production facilities

Drinking Water Analyser TW-100® is the ideal water quality monitoring solution for upstream and downstream purification and filtration processes. Ensure the optimal quality all along the manufacturing and distribution network for drinking and surface water. Powerful monitoring solutions for water table and source water quality control as well as upstream and downstream drinking water purification.

SURFACE AND INDUSTRIAL WATER QUALITY