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The ORAKEL Turbidity monitor automatically varies the light output so that the turbidity can be measured independently of background light and electronic drift. It is ISO 7027 compliant and covers a range of 0.01-1000 NTU (0.01-2000mg/l depending on the sample).
The ORAKEL System determines true turbidity and/or suspended solids in water, using a nephelometric measurement of scattered light in accordance with ISO 7027. The sensor uses lifetime-based optical technology to provide an extremely stable, accurate, low maintenance sensor with no moving parts and no consumables.
Each probe is equipped with a light source, a side detector for the measurement of scattered light from the sample and a reference detector for monitoring the light output. The light source is a long-life IR LED emitter.
This configuration allows accurate and reliable measurements of turbidity and suspended solids to be made.
Reliable calibration can be carried out using a single calibration with no need for a ‘zero’.
The probes are constructed of stainless steel and sapphire so can withstand demanding operating environments. An autoclean system can be included to keep the optical surfaces clean, thereby reducing maintenance to a potential ‘maintenance free’.
Calibration of the ORAKEL System really couldn’t be easier! Either take a reading of the water with another method and enter the value into the analyser or put the sensor into our black polyethylene calibration pot filled with 0.5 litre of standard (typically 20 NTU).
The analyser calibrates the sensor by a procedure that reduces the light output through four stages, taking measurements at each.
This process provides a very accurate and reliable zero and span without the requirement to use a ‘0’ NTU sample.
Anywhere where the measurement range is 0.01-1000 NTU (approximately 0-2000 mg/l, application dependent) is a suitable application for this sensor.
This includes traditional monitoring applications such as those listed here.
Selectable within 0.01-1000 NTU, 0.01-2000 mg/l (application dependent).
0.01-20 NTU, 0.01-100 NTU, 0.01-1000 NTU.
r2 > 0.99.
T90 ≥ 10s (adjustable based on averaging).
< 1% of measured value or 0.01 NTU (whichever is greater).
< 0.3% of measured value or 0.005 NTU (whichever is the greater) (Ref: ISO 15839). Unit of Detection 0.01 NTU (0-10 NTU, Ref: ISO 15839). Temperature -20 to +85°C. Pressure 0-10 bar. Averaging 10 seconds – 10 minutes. Lamp Source IR LED, 860nm. Cleaning Cycles User settable cleaning cycle time and cleaning time. Cleaning Autoclean water jet. Enclosure Rating IP65. Sensor Environmental Protection IP68. Display Value, alarms and graphs at the same time. Resolution 0.001 NTU (0-10), 0.01 NTU (10-100), 0.1 NTU (>100).
One point (zero not required).
38mm (1.5 inch).
278mm (11 inch).
Optical luminescent devices which are extremely resistant to abrasion, extremely stable, and have greatly reduced maintenance and whole life costs.
The ORAKEL Dissolved Oxygen sensor has no chemicals or moving parts. It is stable and reliable making it excellent for process controls and is suitable for all Dissolved Ovygen applications.
The ORAKEL range of Residual Chlorine Analysers, Residual Chlorine Controllers and Residual Chlorine Monitors are membrane devices which are insensitive to changing pH, use no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs.
The membraned amperometric chlorine sensors are enhanced with a third, reference electrode which eliminates zero drift. Its unique design means that pH correction is not usually required at all, completely eliminating reagents.
The pH5 electrode has a double-junction reference to prevent contamination of the reference from sample components.
This design gives the electrode a longer life compared to ordinary electrodes (up to 3 yrs). The electrode also has a hemi-shaped glass measuring surface which is more durable than the traditional bulb-shaped glass.
Sitting at the top end of the market place, the ORAKEL pH probe has a longer life and lower maintenance requirements. Typically it only needs calibrating once every two or three months, making it a very cost effective solution.
The ORAKEL peracetic acid sensor is a membrane device which use no reagents. It is extremely stable and has a reduced maintenance and reduced whole life costs.
With its reduced maintenance, reduced calibration and reduced spares requirements, the ORAKEL peracetic acid sensor is arguably the most cost effective peracetic acid analyser available.
The ORAKEL Suspended Solids senor has a large dynamic range, which eliminates the need for a “zero” and also eliminates the effect of background light.
For multiple measuring ranges, the suspended solids sensor can monitor turbidity and suspended solids from 2 NTU (1mg/l) to 8%* solids.
The ORAKEL System is ideal for all your water monitoring equipment needs, measuring both water flow and water quality at the same time. Created as a modular system, a wide range of water quality sensors can be added to measure various characteristics, such as pH, COD and suspended solids, for a truly bespoke and cost-effective solution.