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Portable Sludge Blanket Level Detector

SludgeWatch 715

Portable Sludge Blanket Level Detector for Spot checking sludge blanket levels in settlement tanks. Repeatable measurement. Safer than handling tubes full of contaminated wastewater.

Sludge Blanket

DTG6 A LED Display, 24 VDC Source 3-wire Switch Output

The SludgeWatch 715 Portable Sludge Blanket Level Detector provides a simple, low cost method of spot checking the sludge blanket level in a wide variety of settlement tanks. The cable reel design removes the need for any additional carrying bag.

The sludge blanket is detected by winding the sensor down into the tank, the audible tone will change and the LED illuminates once the sensor has reached the blanket.

This method of sludge blanket detection offer major improvements over traditional SludgeJudge type systems in terms of both repeatability and importantly health and safety – no more manhandling 4 metre tubes full of contaminated wastewater.

Reliable detection of the sludge interface is necessary to allow operators to de-sludge tanks at the right time. Emptying the tank too often is inefficient in terms of manpower and can have knock on effects on the operation of other parts of the sludge treatment system. Equally allowing the tank to have too much sludge can cause carry over to the next process stage or into the local watercourse. Neither scenario is desirable, and the 715 will provide a quick and easy check on the interface position without relying on operator judgement.

The SludgeWatch 715 uses a range of infrared sensors to make the sludge interface detection. Infrared attenuation has been selected as it is ideally suited to detecting the sludge present in the interface zone. This tends to be considerably ‘thinner’ than the sludge that is present at the bottom of a settlement tank.


Simplified Usage

  • The SludgeWatch 715 simplifies the process of finding the sludge blanket by emitting an audio beep.
  • Simple on/off interface. No software or additional device needed to get a measurement.
  • The product is available in feet or metre markings to provide dependable, easy-to-read depth indication.


Not Operator Dependent

  • The SludgeWatch 715 uses infrared attenuation technology to guarantee repeatable and immediate sludge detection at every measurement.


Improved Tank Desludging

  • This method of Portable Sludge Blanket Detection offers major improvements over traditional systems in terms of both repeatability and health and safety – no more handling tubes full of contaminated wastewater.


Total Field Support

  • Technical support is just a phone call away.

Portable Sludge Blanket Detection Specifications

OPERATING TEMP. 0 to 50°C (32 to 140°F), limited by risk of ice formation interfering with measurement BATTERY LIFE 6 months typical use
DIMENSIONS 280 mm (11”) x 230 mm (9”) x 130 mm (5.1”) (H x W x D) DISPLAY Front Panel LED – ‘ON‘ in Sludge
WEIGHT 1.7 kg ( 3.74lbs) ACCURACY ± 1 cm (0.3″) of interface
PROTECTION CLASS Electronics: IP54 Sensor: IP68 PRINCIPAL OF OPERATION Light Attenuation
ENCLOSURE MATERIAL Dark Blue Nylon WAVELENGTH 960nm Infrared
AUDIBLE OUTPUT Short Tone in Water Long Tone in Sludge RESOLUTION Standard Cable markings every 1.0 metres or every 1 foot
POWER SUPPLY 9V Battery (PP3) RESPONSE TIME 0.5 seconds
STANDARD SENSORSDIMENSIONS WEIGHT OPTICAL PATH RANGE CABLE LENGTH SERVICE REQUIREMENT
IR8 Sensor 95 (3.7”) x 8 (0.3”) x 25 (0.9”) mm0.7 kg (1.54 lbs) inc 10m of cable 8mm 0 – 30,000 10 metres (32.8 ft) standard No routine servicing
IR15 Sensor 95 (3.7”) x 15 (0.6”) x 25 (0.9”) mm 0.7 kg (1.54 lbs) inc 10m of cable 15mm 0 – 10,000 10 metres (32.8 ft) standard No routine servicing
IR40 Sensor 95 (3.7”) x 40 (1.6”) x 25 (0.9”) mm 0.7 kg (1.54 lbs) inc 10m of cable 40mm 0 – 1,500 10 metres (32.8 ft) standard No routine servicing
IR100 Sensor 95 (3.7”) x 100 (3.9”) x 25 (0.9”) mm 0.7 kg (1.54 lbs) inc 10m of cable 100mm 0 – 200 10 metres (32.8 ft) standard No routine servicing
SENSOR SETPOINT (NOT USER ADJUSTABLE) TYPICAL APPLICATIONS
IR100 – Range 0 to 200mg/l The sensor should only be used if the sludge is very ‘light’ with very clear supernatant. Setpoint very approximately – 100 mg/l Water Treatment
IR40 – Range 0 to 1,500mg/l This is the most commonly used sensor and is suitable for use on final settlement tanks in sewage treatment applications and clarifiers in water treatment works. Setpoint very approximately – 750 mg/l Water Treatment Clarifiers Sewage Treatment Final Settlement Humus Tanks
IR15 – Range 0 to10,000mg/l This sensor is also regularly used for sludge blanket detection and is normally used for primary settlement in sewage treatment and sludge thickeners in water treatment. Setpoint very approximately – 5,000 mg/l Water Treatment Sludge Thickeners Sewage Treatment Primary Tanks
IR8 – Range 0 to 30,000mg/l This sensor should be applied on sludge thickeners in sewage treatment plants. Setpoint very approximately – 15,000 mg/l Sewage Treatment Thickeners
Note: Sensor ranges and detection points are appoximate and depend on the site-specific nature of the treatment process.

Applications:

  • Final Settlement Tanks
  • Primary Settlement Tanks
  • Water Treatment – Clarifiers
  • Thickeners
  • Lamella Separators
Description

The SludgeWatch 715 Portable Sludge Blanket Level Detector provides a simple, low cost method of spot checking the sludge blanket level in a wide variety of settlement tanks. The cable reel design removes the need for any additional carrying bag.

The sludge blanket is detected by winding the sensor down into the tank, the audible tone will change and the LED illuminates once the sensor has reached the blanket.

This method of sludge blanket detection offer major improvements over traditional SludgeJudge type systems in terms of both repeatability and importantly health and safety – no more manhandling 4 metre tubes full of contaminated wastewater.

Reliable detection of the sludge interface is necessary to allow operators to de-sludge tanks at the right time. Emptying the tank too often is inefficient in terms of manpower and can have knock on effects on the operation of other parts of the sludge treatment system. Equally allowing the tank to have too much sludge can cause carry over to the next process stage or into the local watercourse. Neither scenario is desirable, and the 715 will provide a quick and easy check on the interface position without relying on operator judgement.

The SludgeWatch 715 uses a range of infrared sensors to make the sludge interface detection. Infrared attenuation has been selected as it is ideally suited to detecting the sludge present in the interface zone. This tends to be considerably ‘thinner’ than the sludge that is present at the bottom of a settlement tank.


Simplified Usage

  • The SludgeWatch 715 simplifies the process of finding the sludge blanket by emitting an audio beep.
  • Simple on/off interface. No software or additional device needed to get a measurement.
  • The product is available in feet or metre markings to provide dependable, easy-to-read depth indication.


Not Operator Dependent

  • The SludgeWatch 715 uses infrared attenuation technology to guarantee repeatable and immediate sludge detection at every measurement.


Improved Tank Desludging

  • This method of Portable Sludge Blanket Detection offers major improvements over traditional systems in terms of both repeatability and health and safety – no more handling tubes full of contaminated wastewater.


Total Field Support

  • Technical support is just a phone call away.
Specifications

Portable Sludge Blanket Detection Specifications

OPERATING TEMP. 0 to 50°C (32 to 140°F), limited by risk of ice formation interfering with measurement BATTERY LIFE 6 months typical use
DIMENSIONS 280 mm (11”) x 230 mm (9”) x 130 mm (5.1”) (H x W x D) DISPLAY Front Panel LED – ‘ON‘ in Sludge
WEIGHT 1.7 kg ( 3.74lbs) ACCURACY ± 1 cm (0.3″) of interface
PROTECTION CLASS Electronics: IP54 Sensor: IP68 PRINCIPAL OF OPERATION Light Attenuation
ENCLOSURE MATERIAL Dark Blue Nylon WAVELENGTH 960nm Infrared
AUDIBLE OUTPUT Short Tone in Water Long Tone in Sludge RESOLUTION Standard Cable markings every 1.0 metres or every 1 foot
POWER SUPPLY 9V Battery (PP3) RESPONSE TIME 0.5 seconds
STANDARD SENSORSDIMENSIONS WEIGHT OPTICAL PATH RANGE CABLE LENGTH SERVICE REQUIREMENT
IR8 Sensor 95 (3.7”) x 8 (0.3”) x 25 (0.9”) mm0.7 kg (1.54 lbs) inc 10m of cable 8mm 0 – 30,000 10 metres (32.8 ft) standard No routine servicing
IR15 Sensor 95 (3.7”) x 15 (0.6”) x 25 (0.9”) mm 0.7 kg (1.54 lbs) inc 10m of cable 15mm 0 – 10,000 10 metres (32.8 ft) standard No routine servicing
IR40 Sensor 95 (3.7”) x 40 (1.6”) x 25 (0.9”) mm 0.7 kg (1.54 lbs) inc 10m of cable 40mm 0 – 1,500 10 metres (32.8 ft) standard No routine servicing
IR100 Sensor 95 (3.7”) x 100 (3.9”) x 25 (0.9”) mm 0.7 kg (1.54 lbs) inc 10m of cable 100mm 0 – 200 10 metres (32.8 ft) standard No routine servicing
SENSOR SETPOINT (NOT USER ADJUSTABLE) TYPICAL APPLICATIONS
IR100 – Range 0 to 200mg/l The sensor should only be used if the sludge is very ‘light’ with very clear supernatant. Setpoint very approximately – 100 mg/l Water Treatment
IR40 – Range 0 to 1,500mg/l This is the most commonly used sensor and is suitable for use on final settlement tanks in sewage treatment applications and clarifiers in water treatment works. Setpoint very approximately – 750 mg/l Water Treatment Clarifiers Sewage Treatment Final Settlement Humus Tanks
IR15 – Range 0 to10,000mg/l This sensor is also regularly used for sludge blanket detection and is normally used for primary settlement in sewage treatment and sludge thickeners in water treatment. Setpoint very approximately – 5,000 mg/l Water Treatment Sludge Thickeners Sewage Treatment Primary Tanks
IR8 – Range 0 to 30,000mg/l This sensor should be applied on sludge thickeners in sewage treatment plants. Setpoint very approximately – 15,000 mg/l Sewage Treatment Thickeners
Note: Sensor ranges and detection points are appoximate and depend on the site-specific nature of the treatment process.
Application

Applications:

  • Final Settlement Tanks
  • Primary Settlement Tanks
  • Water Treatment – Clarifiers
  • Thickeners
  • Lamella Separators
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