توضیحات
Features
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.
Specifications
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 | ۵۰۰ 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 | -۱۰ to 55℃ |
| Relative humidity | ۱۰ to 90% RH (non-condensing) |
| Construction | Complies with JIS C0920 watertight, IEC IP65 and NEMA 4X standards |
| Supply voltage | ۱۰۰ to 240 V AC, 50/60 Hz, 24 V DC |
| Power consumption | ۲۲ VA maximum (AC power) ۵ 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 | ۵۰۰ to 20000 mg/l |
| Temperature of measured object | ۰ to 50℃ |
| Pressure of measured object | ۰ to 200 kPa |
| Flow velocity | ۱ m/sec maximum |
| Cable length | ۳, ۵, ۱۰, ۱۵ 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 | -۱۰ to 50℃ |
| Construction | Complies with JIS rainproof standard |
Performance
| Linearity | ±۴٫۵ % F.S. (by stable kaolin) |
| Repeatability | ۲ % F.S. (by stable kaolin) |
| Stability | Zero: ±۲ % F.S./day (by city water) Span: ±۲ % F.S./day (by calibration kit) |
نقد و بررسیها
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