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Rake Torque from the scraper also works on total load and is affected by density and therefore cannot be used to control bed level The displacement float sticks and suffers from build up The Sonar Acoustic transmitter can be calibrated to work with two different densities We can track the Compact Bed Level to control the underflow pump
Thanks to the integrated wiper the ultrasonic Turbimax CUS71D bed level sensor delivers reliable continuous measurements in thickener applications Simple commissioning Predefined calibration models and the calibration and sensor related data saved in the sensor make commissioning fast and easy
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Some of the process variables that are commonly monitored on a thickener are torque rake height bed level bed pressure feed rate and density underflow rate and density settling rate and overflow turbidity Many of these are easily measured while some can be difficult Combining these signals into a coherent control strategy requires forethought and an understanding of the
·• Liquiline transmitter CM42 2 wire with 2 sensor input or • Liquiline CM44x with up to 8 sensors 4 bed level 4 other • Turbimax CUS71D submersible Ultrasonic level sensor with cleaning assembly • Turbimax CUS51D particle settling rate sensor • Orbipac CPF81D pH sensor with CYA 112 mounting assembly
Turbimax CUS71D continuously monitors the separation and transition zones in clarification and settling tanks ensuring safe economic and efficient sedimentation processes It provides you with reliable real time measured values in real time for quick control of valves and actuators Turbimax CUS71D is ideal sensor for every measuring task from protection of downstream water in
Liquiline transmitter CM42 2 wire with 2 sensor input or Liquiline CM44x with up to 8 sensors 4 bed level 4 other Turbimax CUS71D submersible Ultrasonic level sensor with cleaning assembly Turbimax CUS51D particle settling rate sensor Orbipac CPF81D pH sensor with CYA 112 mounting assembly
The thickener drive unit is the mechanism that powers the movement of the rake mechanism in a thickener The drive unit is typically located at the top of the thickener tank and has a robust design to handle significant hours of operation This design allows for ease of service and replacement of spares Bed mass sensor; Bed level probe
·SmartDiver is a ruggedised mud diver/sludge level sensor that provides measurement of mud levels settling zones and overflow clarity in thickeners clarifiers washers and decanters Tank profiling suspended solids vs depth is also provided as it is specific gravity profiling and bed level measurement
·With PID loop control the thickener inventory can be controlled through feedback from either bed level or Clarometer and flocculant dosing can be controlled against mass flow with feedback from bed level By controlling flocculation and solids inventory the thickening process is stabilized and consistent optimum; underflow density can be
·ORCA Sonar Sensor Typical Bed Level Control Thickener CCD Clarifier Green trend shows bed level output 1 Over 8hr period density is 10G/L ORCA Sonar Transmitter provides 2 outputs Bed Level Position output 1 and Clarity output 2 TME Clarity output is a 4 20mA output proportional to the percentage of suspended
·The PHOENIX AltaFlo Thickener is a rake less thickener that provides ultra high rate mixing flocculation and internal dilution followed by clarification and positive sludge collection bed level sensor and pressure transmitter 1 PHOENIX Process Equipment 2402 Watterson Trail Louisville KY 40299 p 502 499 6198 f 502 499 1079 e
·content and the thickener inventory level Thickener Optimizer The solution overcomes the challenges of conventional single loop controllers and combines a multivariable Bed pressure Time [h] Inventory level Before Before After After 50 100 150 200 50 100 150 200 DENSITY INVENTORY LEVEL Time [h] 0 0 10 20 30 40 50 60 70 80 90 100 1 3 1 5
Click to continue reading Compact and robust level sensor for gravity thickeners Product Solutions Rosemount 1208 Non Contacting Level and Flow Transmitter The Rosemount 1208 Series provides accurate and reliable level measurement and open channel flow calculations The radar level transmitter has been designed to solve challenges in
·A bed/mud level target is used to obtain optimum loading in the thickener without overloading the drive mechanism Bed pressure is used as an indication of solids inventory This helps the system determine whether a high bed level is the result of decreased settling rate or increased solids inventory
·This measurement is targeted at turbidity profiling as well as bed level detection If only bed level measurement is required then the buoyancy principle is more cost effective The buoyancy based electromechanical system uses a sensing weight which is lowered on a measuring tape into the thickener to detect the bed level
·weight which is lowered on a measuring tape into the thickener to detect the bed level Typically the sensing weight is a light hollow container filled with the bed level material When the container is lowered it sinks in the water but floats when it reaches the bed At this point the bed level can be measured Once the bed level
T3000 series is a highly reliable and accurate liquid level transducer It can be widely used in liquid pressure and liquid level measurement such as water oil and other low corrosive liquids Pressure Transmitter & Sensor LFT710 Monocrystalline Silicon Differential Pressure Transducer 3000kPa Pressure Transmitter & Sensor Get In
Settling bed level / RAS blanket level; Industrial food paper etc Primary Sedimentation Tank Primary Sedimentation Tank; Secondary Clarifier Tank RAS blanket level / suspended solids / rag/pinfloc layer; Thickener Tank Sludge bed level / clarity suspended solids / floc level; Sequential Batch Reactor SBR Settling blanket level / RAS bed
Sludge level measurement with ultrasonic sensors Ultrasonic sludge level sensors feature a piezoelectric crystal that is encased in a resistant polymer housing When the crystal is excited with voltage it generates a sonar signal In the process ultrasonic waves are emitted to scan the separation zones
·When controlling a thickener operation dependent variables are used to control independent variables for example using density to control the flow rate in the underflow [1] In Figure 3 a common thickener configuration is depicted next to dependent variables such as underflow density bed pressure rake torque solids settling rate and
The multielectrode sensor used to measure the thickener bed height and percent solids in real time consists of the multielectrode bar and the electrode sensors The bar is a cylinder made of high
Thanks to the integrated wiper the ultrasonic Turbimax CUS71D bed level sensor delivers reliable continuous measurements in thickener applications Simple commissioning Predefined calibration models and the calibration and sensor related data saved in the sensor make commissioning fast and easy
·Examples of installation points are the feed underflow overflow and inside the thickener tank Flow meters are combined with density meters to calculate the mass flow in the underflow and feed of the thickener Inside the tank submerged ultrasonic probes are used for tank profiling interface detection and measuring the bed level
·Factors determining efficiency of Thickener Several types of thickeners have been developed and classified according to the arrangement of feed and discharge in the various compartments For effective thickener control key considerations are bed mass inventory underflow density and flow bed level overflow clarity and flocculent dosing
