MLSS Analyzers-SS400G, SS300G
2016-05-27 15:13:37
Description:
The SS400 MLSS analyzer is a measuring system best suited to continuously and consistently measure the concentration of mixed liquor suspended solids (MLSS) in an activated-sludge treatment process found in sewage or industrial wastewater treatment facilities. The SS400G MLSS converter has a measuring range as wide as 500-20000 mg/l (ppm). Microprocessor-based, it has a wealth of self-diagnostic functions and alarm contact outputs like other converters in the EXA series, as well as excellent operability. The SS300G MLSS sensor uses a measuring method that compares transmitted light with scattered light. The sensor is designed with due care to the arrangement of the optical system. These design features enable measurement of even low concentrations, making the sensor less susceptible to disturbing light. The optional jet cleaning unit permits continuous and consistent measurement even in an application where the sensor is exposed to contaminants. A self-cleaning floating holder is available in addition to free-standing and immersion models, offering a wide range of choices according to the application needs.……
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Description
SS400G, SS300G
The SS400 MLSS analyzer is a measuring system best suited to continuously and consistently measure the concentration of mixed liquor suspended solids (MLSS) in an activated-sludge treatment process found in sewage or industrial wastewater treatment facilities.
The SS400G MLSS converter has a measuring range as wide as 500-20000 mg/l (ppm). Microprocessor-based, it has a wealth of self-diagnostic functions and alarm contact outputs like other converters in the EXA series, as well as excellent operability.
The SS300G MLSS sensor uses a measuring method that compares transmitted light with scattered light. The sensor is designed with due care to the arrangement of the optical system. These design features enable measurement of even low concentrations, making the sensor less susceptible to disturbing light. The optional jet cleaning unit permits continuous and consistent measurement even in an application where the sensor is exposed to contaminants.
A self-cleaning floating holder is available in addition to free-standing and immersion models, offering a wide range of choices according to the application needs.
Converter
Wide output ranges, 0-1000 mg/l to 0-20000 mg/l.
Output in different two ranges.
Abundant contact outputs.
Enhanced self-diagnosis functions including failure in light source.
Sensor
Easy-to-maintain, lightweight, compact probe-like sensor.
Virtually no need for replacing light source and photodetector unit.
Pulse-driven light emission, eliminating effects of disturbing light.
Arrangement of optical system highly immune to effects of light reflecting from boundary surface.
Choice of jet cleaning unit.
Choice of various type of holders according to application needs.
Converter
Measuring object | Concentration of mixed liquor suspended solids (MLSS) in an aeration tank in a sewage or industrial wastewater treatment plant |
Measuring method | Transmitted/scattered light comparison method |
Measuring range | 500 to 20000 mg/l |
Output signal | Two outputs, 4 to 20 mA DC; maximum load resistance: 600 Ω |
Output range | Minimum 0 to 1000 mg/l Maximum 0 to 20000 mg/l |
Contact output | Four outputs |
Contact input | Voltage-free contact for remote range selection and start of cleaning |
Ambient temperature | -10 to 55℃ |
Relative humidity | 10 to 90% RH (non-condensing) |
Construction | Complies with JIS C0920 watertight, IEC IP65 and NEMA 4X standards |
Supply voltage | 100 to 240 V AC, 50/60 Hz, 24 V DC |
Power consumption | 22 VA maximum (AC power) 5 W maximum (DC power) |
Weight | Approx. 2.5 kg |
Sensor
Shape | Probe-like Sensor |
Measuring object | Concentration of mixed liquid suspended solid (MLSS) in an aeration tank in a sewage or industrial wastewater treatment plant |
Measuring principle | Scattered/transmitted light comparison method |
Measuring range | 500 to 20000 mg/l |
Temperature of measured object | 0 to 50℃ |
Pressure of measured object | 0 to 200 kPa |
Flow velocity | 1 m/sec maximum |
Cable length | 3, 5, 10, 15 or 20 m |
Material of wetted part or junction | Body; Stainless steel (304SS or equivalent) Window; glass O-ring; nitrile rubber Cable; PVC |
Weight | Approx. 0.5 kg plus N x 0.12 kg, where N is cable length |
Cleaning unit (optional) | Jet cleaning Note: No cleaning unit can be used if the sensor is equipped with a floating ball holder. |
Material of wiper cleaning unit | Nitrile rubber and 304SS (wetted part) |
Material of jet cleaning unit | Polypropylene, polyethylene and 304SS (wetted part) |
Ambient temperature | -10 to 50℃ |
Construction | Complies with JIS rainproof standard |
Linearity | ±4.5 % F.S. (by stable kaolin) |
Repeatability | 2 % F.S. (by stable kaolin) |
Stability | Zero: ±2 % F.S./day (by city water) Span: ±2 % F.S./day (by calibration kit) |