Home > Suspended Solids Measurement > Self Cleaning High Range Suspended Solids Sensor
The TurbiTechw² HR Sensor has been specifically designed for use in wastewater treatment systems where high levels of suspended solids are desirable in the aeration phase. Membrane Bio Reactors (MBR) typically run with MLSS values in the region of 8,000 to 14,000 mg/l. High MLSS concentrations promote numerous process benefits, including stable operation, complete nitrification, and reduced biosolids production reducing biological volume requirements (and associated footprint) to only 20-30 percent of conventional biological processes.
The TurbiTechw² HR sensor is suitable for monitoring solids in higher ranges than the standard LA version of the sensor due to it’s shorter path length.
In addition the sensor incorporates a self cleaning mechanism that ensures the optical surfaces are kept clean at all times, the cleaning system is designed to avoid problems with ragging and does not smear the optical system. The cleaning system ensures that manual intervention on a routine basis is not required, the sensor should simply be checked as part of general site housekeeping. The large optical surface and sample volume combine to ensure that the sensor is providing information that is reliable and representative of the solids present in the process. Deposits of fats and grease on the sensing area do not prevent the sensor from measuring unlike sensors with small optical surfaces
The TurbiTechw² HR Sensor uses infrared light at 860 nm and operates using the Light Attenuation Principle. The cleaning mechanism uses a polyurethane wiper seal, sealed by 2 Nitrile ‘H’ Rings that finish the cleaning process. The Nitrile seals can be exchanged for Viton if the process media dictates. The cleaning process is automatically initiated by the 7300w² Monitor at a user determined frequency. The cleaning process takes only 90 seconds, which means that the sensor is available for 99.5% of the time with a 6 hourly cleaning cycle.
Physical |
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| Dimensions (hxwxd) | 470 x Ø80 mm | |
| Weight | 2.2 kg (inc 10 metres of cable) | |
| Protection Class | IP68 | |
| Enclosure Material | Black Acetal Co-polymer | |
| Cable Entries | Integral Cable Gland | |
| Wetted Parts | Black Acetal, 316 Stainless Steel, Glass, Polyurethane, Nitrile | |
| Cable Type | 4 core, 2 Twisted Pair, 9 mm O/D Polyurethane Coated | |
| Cable Length | 10 metres standard, 100 metres maximum | |
| Service Requirement | Automatic Self Cleaning Seal Service every 3500 cleans (application dependent) |
|
Environmental Data |
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| Operating Temperature | 0 to 50ºC | |
| Interface to Monitor | ||
| Power Supply | 12 VDC from Monitor | |
| Sensor Output | ModTechw², RS485 | |
Measurement Characteristics |
||
| Range | 0 – 50,000 mg/l | |
| Accuracy | ±5% of reading or 100 mg/l whichever is greater | |
| Limit of Detection | 250 mg/l | |
| Minimum Operating Range | 0 – 5,000 mg/l | |
| Measurement Principle | Light Attenuation | |
| Wavelength | 860 nm Infrared | |
| Pressure Rating (Depth) | 1Bar or 14.5 psi | |
| Flowrate | Not affected by flowrate, avoid deadspots and extreme turbulence | |
| Units | FAU, mg/l, ppm, g/l, %SS, User Defined | |
| NOTE: The actual measuring range for Suspended Solids will depend on the nature of sample being monitored and cannot be guaranteed. | ||
The TurbiTechw² HR Sensor has been specifically designed for use in wastewater treatment systems where high levels of suspended solids are desirable in the aeration phase. Membrane Bio Reactors (MBR) typically run with MLSS values in the region of 8,000 to 14,000 mg/l. High MLSS concentrations promote numerous process benefits, including stable operation, complete nitrification, and reduced biosolids production reducing biological volume requirements (and associated footprint) to only 20-30 percent of conventional biological processes.
The TurbiTechw² HR sensor is suitable for monitoring solids in higher ranges than the standard LA version of the sensor due to it’s shorter path length.
In addition the sensor incorporates a self cleaning mechanism that ensures the optical surfaces are kept clean at all times, the cleaning system is designed to avoid problems with ragging and does not smear the optical system. The cleaning system ensures that manual intervention on a routine basis is not required, the sensor should simply be checked as part of general site housekeeping. The large optical surface and sample volume combine to ensure that the sensor is providing information that is reliable and representative of the solids present in the process. Deposits of fats and grease on the sensing area do not prevent the sensor from measuring unlike sensors with small optical surfaces
The TurbiTechw² HR Sensor uses infrared light at 860 nm and operates using the Light Attenuation Principle. The cleaning mechanism uses a polyurethane wiper seal, sealed by 2 Nitrile ‘H’ Rings that finish the cleaning process. The Nitrile seals can be exchanged for Viton if the process media dictates. The cleaning process is automatically initiated by the 7300w² Monitor at a user determined frequency. The cleaning process takes only 90 seconds, which means that the sensor is available for 99.5% of the time with a 6 hourly cleaning cycle.
Physical |
||
| Dimensions (hxwxd) | 470 x Ø80 mm | |
| Weight | 2.2 kg (inc 10 metres of cable) | |
| Protection Class | IP68 | |
| Enclosure Material | Black Acetal Co-polymer | |
| Cable Entries | Integral Cable Gland | |
| Wetted Parts | Black Acetal, 316 Stainless Steel, Glass, Polyurethane, Nitrile | |
| Cable Type | 4 core, 2 Twisted Pair, 9 mm O/D Polyurethane Coated | |
| Cable Length | 10 metres standard, 100 metres maximum | |
| Service Requirement | Automatic Self Cleaning Seal Service every 3500 cleans (application dependent) |
|
Environmental Data |
||
| Operating Temperature | 0 to 50ºC | |
| Interface to Monitor | ||
| Power Supply | 12 VDC from Monitor | |
| Sensor Output | ModTechw², RS485 | |
Measurement Characteristics |
||
| Range | 0 – 50,000 mg/l | |
| Accuracy | ±5% of reading or 100 mg/l whichever is greater | |
| Limit of Detection | 250 mg/l | |
| Minimum Operating Range | 0 – 5,000 mg/l | |
| Measurement Principle | Light Attenuation | |
| Wavelength | 860 nm Infrared | |
| Pressure Rating (Depth) | 1Bar or 14.5 psi | |
| Flowrate | Not affected by flowrate, avoid deadspots and extreme turbulence | |
| Units | FAU, mg/l, ppm, g/l, %SS, User Defined | |
| NOTE: The actual measuring range for Suspended Solids will depend on the nature of sample being monitored and cannot be guaranteed. | ||
WJF Instrumentation Ltd.
#5 3610 – 29th Street N.E.
Calgary, Alberta
Canada
T1Y 5Z7
Calgary Head Office
Toll-Free: (877)291-5572
Standard: (403)291-5570
Ontario & Maritimes Sales:
(905)809-6918
