turbidity and suspended solids meter

Transcription

1 Data sheet turbidity and suspended solids meter GB/0001 As our products are developed continuously we reserve the right to make any changes without prior notice.

2 Data sheet turbidity and suspended solids meter General SuSix is an on-line turbidity and suspended solids meter. The connected sensor determines the measuring range. Measurements are indicated in mg/l, %, ppm or FTU (Formasin Turbidity Unit). The measuring system consists of a universal measuring amplifier, a sensor and fitting for mounting the sensor. Measuring signals are amplified in the sensor, allowing the measuring signal to be transmitted over a substantial distance and to avoid error signals. Special Features The measuring system is easy to install, calibrate and maintain. Well-tried sensor technique using 4-beam pulsating infrared light. Built-in preamplifier ensure noise-free input signal and allows cable lengths up to 200 m. Galvanically isolated ma-output, 4 limit relays, high/low alarm plus a relay for autocleaning and system error. µ-processor-controlled amplifier, programmable with zero suppression, scalable units (NTU, PPM, mg/l. g/l, %). Any linearization can be chosen. Possibility of 4 calibration curves for adaptation to different types of sludge. Application SuSix is used in sewage plants to control sludge in basins, to measure and control sludge return pumps, to measure waste sludge, solids in sludge thickeners and determination of turbidity in outlets. SuSix is used in industries for determination of turbidity in processes, of solids in products such as food and pharmaceuticals and for monitoring in waste water systems. Function The SuSix sensor measures with 90 º scattered IR light. At low measuring values, where the scattering is measured, the amount of particles are directly proportional to turbidity. Concentration is measured as the absorption of IR light in the liquid. SuSix turbidity meter measures according to ISO 2027, where 90 º scattering are standard for measuring of turbidity in FTU. SuSix amplifier Measuring range: Power supply: Dependent on sensor Temperature range: -20 to +60 C Input signal: Accuracy: < ±1% Analog outputs: Digital outputs: Indication: Operation: V AC or 24 V AC/DC, power consumption appr. 20 VA Frequency from sensor 0-20/4-20 ma, max. load 500 W 4 x voltage-free changeover contacts, max. load 30V DC/0,5A or 60V AC/0,5A Measurement: 4½-digit LED display Programming: Alphanumeric display From keyboard, menu and function controlled 2

3 Data sheet turbidity and suspended solids meter, continued: SuSix amplifier Dimensions: 185 x 240 x 115 mm (h x w x d) Enclosure: IP 65 CE: EN , EN Electrical connection: Dimensions: Order numbers: SuSix SuSix amplifier SuSix sensors Low concentration type SSN, for immersion Low concentration type SSN, for flow Medium concentration type SAM, for immersion Medium concentration type SAM, for flow High concentration type SAH, for immersion High concentration type SAH, for flow Medium thick sludge type SAV, for immersion Medium thick sludge type SAV, for flow (V-probe) Thick sludge type SRH, for flow Fittings for immmersion Fittings for immersion Universal bracket Wall fitting for universal bracket (for immersion) Extension for fitting (for immersion) Fittings for flow Fitting for flow with ball valve Welding connection DN 40 for flow Accesories Extension cable for sensor, 13 m. 3

4 Data sheet sensors General Determination of suspended solids, turbidity and contents of sludge is important in many processes in sewage plants and industries. For suspended solids measurement we deliver a number of sensors for various measuring functions. Special features Approved sensor technique using 4-beam pulsating infrared light. Built-in pre-amplifier in the sensor limits noise and allows cable length up to 200 m between sensor and amplifier. Applications In public and industrial sewage plants, suspended solids measurement are used for controlling: Amount of sludge in aeration basins Sludge return pumps control Measuring of suspended solids and level of sludge in sludge thickeners Measuring of sludge level in sedimentation basins Controlling of turbidity in the outlet In the industries suspended solid measurement are used for determination of turbidity in processes and for determination of suspended solids in food and pharmaceutical processes. Measurement principle Turbidity is measured as the difference of direct and 90º scattered IR light. Concentration is measured as the absorption of IR light in the liquid. The measuring equipment measures according to ISO 7027 and DIN Sensorer Sensors are available in 5 measuring ranges for immersion in open tanks and for flow in closed pipes. General specifications Sensors Material, body: Acid proof steel AISI 316 optics: POM Measuring principle: 4-beam pulsating IR-light Reflection: 90 O Temperature: -20 to +50 O C Pressure: Max. 6 bar Measurement accuracy: ±1 % Reproducibility: ±0.5 % Turbidity I S =I O C A f (a) Concentration I S = Intensity of reflected IR light I O = ntensity of direct IR light C = Contents suspended solids A = Geometrical factor f (a) = Function dependant of the angle I T = Damped direct IR light I R = Reflected IR light = Deflected direct IR light I D 4

5 Data sheet sensors Sensor types Which sensor for which measuring function? The measuring range and sensitivity is schematically shown below: Sensor: Immersion: SSN SAM SAH SAV SRH Flow: Range: NTU/FTU: SiO 2 /l: NS: PS: Min mg/l Max g/l Min. 0-5 g/l 0-1 g/l 0-0,5 g/l Max g/l 0-12 g/l 0-6 g/l Min g/l 0-2 g/l 0-1 g/l Max g/l 0-40 g/l 0-20 g/l Min g/l 0-5 g/l Max g/l 0-30 g/l Min. Max. NS = Normal active sludge PS = Primary sludge or chemical sludge 8-20 g/l 8-80 g/l Sensor for turbidity type SSN Sulphate contents. Turbidity in the outlet of sewage plants. Turbidity in lakes and rivers. Turbidity in industrial processes. Immersion Flow Wavelength: Cable length: 880 nm 13 m / 0,8 m Immersion Flow Sensor for medium concentration type SAM Contents of sludge in aeration basins. Suspended solids in the inlet. Concentrations of return sludge and activated sludge. Contents of suspended solids in industrial processes. Immersion Flow Wavelength: Cable length: 880 nm 13 m / 0,8 m Immersion Flow 5

6 Data sheet sensors Sensor for high concentration type SAH Sulphate contents. Sludge contents in pre-sedimentation. Turbidity in lakes and rivers. Suspended solids in industrial processes. Immersion Immersion Flow Wavelength: 880 nm Cable length: 13 m / 0,8 m Flow Sensor for very high concentration type SAV Return sludge for primary and final sedimentation tank. Measuring of sludge density, where sludge age and colour change. Control of sludge for dewatering. Digested sludge. Immersion Flow Wavelength: 880 nm Cable length: 13 m / 0,8 m Sensor for heavy sludge type SRH Concentration of pre-sedimentation and excess sludge. Control of inlet for centrifuge. Suspended solids in industrial processes. Immersion Wavelength: 880 nm Cable length: 0,8 m Acessories, immersion sensors: For measuring from the surface in open tanks. Standard fittings Universal Fitting for wall Extension Fittting for immersions Diameter: 1" w. thread Material: AISI 316 acidproof Fitting for measuring in an open tank 6

7 Data sheet Applications Inlet Primary Clarifier Tank Aeration Basin Secondary Clarifier Tank Plant Effluent Return Activated Sludge (RAS) Waste Activated Sludge (WAS) Sludge Thickening Sludge Digestion Sludge Dewatering Sludge Disposal Application examples on measuring with SuSix on a waste water plant. SuSix can be used on a waste water plant to measure: Suspended solids in the inlet. Suspended solids after grid chamber. Sludge level in preliminary sedimentation. Sludge from preliminary sedimentation. Suspended solids in process tank. Suspended solids for final sedimentation. Sludge level in final sedimentation. Suspended solids from final sedimentation. Turbidity in the outlet. Suspended solids in digestion tank. Suspended solids in sludge deposit. Control of sludge dewatering. Suspended solids in reject water. Fitting for immersion in open channels. Fitting with sensor for measuring of suspended solids in pressure pipe. Sensor can be removed during operation. 7

8 Data sheet Accessories Fitting for measuring in pipe and closed tanks Ball valve with fittings. Inner dia. 40 mm with security lock. Type: Material: AISI 316 acid proof steel O-rings: Viton Mounting Wall mounting Extender for fitting Pipe mounting on universal bracket Universal fitting Immersion fitting Junction box for sensor cable Flushing system for sensor SAM Flushing system for sensor SAV Flushing system for sensor SSN Junction box for sensor cable Flushing system for sensor SAM. Flushing system for sensor SAV. Flushing system for sensor SSN. 8