Home > Suspended Solids Measurement > Self Cleaning Suspended Solids Sensor
The TurbiTechw² LA Sensor has been designed for use in aeration systems monitoring suspended solids also known as mixed liquor suspended solids or activated sludge where solids are typically in the range of 1,500 to 3,500 mg/l. The sensor can also measure Returned Activated Sludge (RAS), Surplus Activated Sludge (SAS) and suspended solids or turbidity.
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. 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.
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 – 20,000 mg/l | |
| Accuracy | ±5% of reading or 100 mg/l whichever is greater | |
| Limit of Detection | 100 mg/l | |
| Minimum Operating Range | 0 – 2,000 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 | User Selectable mg/l, g/l, ppm, %SS, NTU | |
| NOTE: The actual measuring range will depend on the nature of the sample being monitored, for processes normally operating at 10,000 mg/l or more should consider use of the HR version of this sensor. Processes that use carbon will provide higher than expected readings and the HR version of the sensor should be used. | ||
The TurbiTechw² LA Sensor has been designed for use in aeration systems monitoring suspended solids also known as mixed liquor suspended solids or activated sludge where solids are typically in the range of 1,500 to 3,500 mg/l. The sensor can also measure Returned Activated Sludge (RAS), Surplus Activated Sludge (SAS) and suspended solids or turbidity.
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. 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.
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 – 20,000 mg/l | |
| Accuracy | ±5% of reading or 100 mg/l whichever is greater | |
| Limit of Detection | 100 mg/l | |
| Minimum Operating Range | 0 – 2,000 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 | User Selectable mg/l, g/l, ppm, %SS, NTU | |
| NOTE: The actual measuring range will depend on the nature of the sample being monitored, for processes normally operating at 10,000 mg/l or more should consider use of the HR version of this sensor. Processes that use carbon will provide higher than expected readings and the HR version of the sensor should be used. | ||
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
