The ColTechw² Sensor has been specifically designed to monitor Apparent Colour in applications where a broad indication of the colour of the water is required. The self cleaning sensor is ideal for monitoring at the intake stage of drinking water processing, allowing automatic coagulant control with no need for a complex analyser.
Organic materials such as Humic Acid or metals like Iron and Manganese dissolved in water will appear as an unacceptable yellow tinge. If discoloured water is allowed to enter the water supply network customers will quickly become aware of the problem.
Measurement of colour is therefore an important element of potable water treatment control, the ColTechw² Sensor in combination with the 7300w² Monitor will provide a reliable, repeatable indication of colour levels allowing online adjustment of coagulation control packages. A high residual colour reading is a clear indicator of a coagulation control system that is not functioning correctly, and will allow the process to be optimised, enabling significant savings to be made in usage of dosing chemicals.
The sensor requires very little maintenance, with no special tools or training required. Calibration can be carried out against either a wet standard or using a reference standard.
|Dimensions (hxwxd)||370 x 280 x 200 mm|
|Weight||4.5 kg (inc 10 metres of cable)|
|Enclosure Material||Black Acetal Co-Polymer|
|Cable Entries||Integral Cable Gland|
|Wetted Parts||Black Acetal, 316 Stainless Steel, Glass|
|Process Connections||Inlet and Bypass: ½" BSP with 12 mm Hosetail
Outlet: ¼" BSP with 8 mm Hosetail
|Cable Type||4 core, 2 Twisted Pair, 5 mm O/D Polyurethane Coated|
|Cable Length||5 metres standard, 100 metres maximum|
|Service Requirement||Automatic Self Cleaning
Wiper Replacement Yearly (application dependent)
|Operating Temperature||0 to 50ºC|
|Interface to Monitor|
|Power Supply||12 VDC from Monitor|
|Sensor Output||ModTechw², RS485|
|Accuracy||Better than ±2%|
|Resolution||±1% FSD or better|
|Repeatability||Better than ±1%|
|Light Source||Light LED, 370 nm|
|Turbidity Limit||100 NTU|
|Optical Path Length||40 mm|
|Sensor Response Time||90% of step change in 3 seconds|
|Pressure Rating (Depth)||1 Bar|
|Flowrate||0.5 l/min to 5 l/min|
|223911||ColTechw² Sensor (Range 0-200 Hazen, Cable Length: 5 metres, Nitrile Wiper)|
|220372||De-Bubbler with Auto Air Vent|
|201010||WaterWatch2310/WaterWatch2970.TurbiTechw² LR/ColTechw² - Replacement Cleaner Arm/Wiper Blades (pack of 3)|
De-Bubbler for use with TurbiTechw² LR and ColTechw² SensorsMore Details