General Specifications

Transcription

1 General Specifications AL400G Alkalinity Meter Overview Water supply systems and treatment plants use alkalinity measurements to control the dose of flocculants, chemicals used to precipitate suspended particles for turbidity removal in raw water, and to prevent corrosion of water distribution lines from plants to consumers. Alkalinity analyzers are also required for monitoring and controlling water quality of industrial waters such as boiler feed water and water used for food production and processing. The AL400G Alkalinity Analyzer is a process analyzer which is based on the automated neutralization titration using the method described in the Test Method for Clean Water and the Japanese Industrial Standards JIS K00: Test Method for Industrial Waters, and is designed specially for operational control of water supply systems and treatment plants. The AL400G uses a glass electrode for endpoint detection and employs the gravimetric method for both sample intake and reagent use, providing stable reading with high repeatability. This makes the analyzer ideal for process use. Having fewer moving parts compared to the instrument using the volumetric method, the AL400G is capable of reliable, continuous measurements with prolonged service lifetime. A sand filter is available for measuring dirty water sample and a cleaning system is equipped with the analyzer as standard. An optional automatic calibration function can be attached, resulting in lower maintenance. System configuration F00E.EPS Water sample Ball Cleaning water Pressure reducing Ball Reagent hesd tank Solenoid Head tank Solenoid Sand filter Sequencer Converter Ball Pump Solenoid Aspirator Motor M ph converter Alkalinity converter Display Touch keys Reagent tank 20L Solenoid Solenoid Drain Weighing system Yokogawa Electric Corporation , Nakacho, Musashino-shi, Tokyo, Japan Tel.: Fax.: F.E.EPS st Edition Mar. 200

2 Features Proven measuring system based on neutralization titration gravimetric analysis Reducing the reagent consumption to /6 compared to the previous models Compact, easy-to-operate design, allowing simpler installation with minimum space requirements Enhanced self-diagnostics, including check for reagent shortage General Specifications Measured object: M alkalinity of clean or raw water (CaCO 3 equivalent: Equivalence point ph 4.8) Measurement principle: Neutralization titration gravimetric analysis using glass ph electrode Measurement interval: Continuous measurement, fixed period (previous value held). Interval: 0 min. + hold time (arbitrary setting in range 0.0 to 24 hrs) Measurement ranges: Low range: 0 to 50 mg/l Medium range: 0 to 00 mg/l High range: 0 to 200 mg/l Output ranges: Programmable Minimum range: 0 to 50 mg/l Maximum range: Measurement range Output signal: Two outputs (Alkalinity, ph) Note: ph output is valid during measurement. 4 to 20 ma DC (max. load resistance: 600 ) Burnout upscale/downscale selectable in range 2.0 to 22.0 ma Output hold during maintenance: selectable as last value or fixed value Display: Digital (0.0 to 200.0). Contact output: Output type: concentration high or low limit alarm, auto-cleaning/auto-calibration cycle,in-maintenance status signal, instrument fail. Contact operation: On or Off output Contact type: relay contact output (voltage-free contact) Contact rating: Max. open/closed voltage: V AC or 24 V DC (resistance load) Max. voltage across load: 264 V AC or 25 V DC Max. current: 2 A, AC or DC (resistance load) Max. power switched: 20 V A or 48 W (resistance load) Contact status: Contacts Power off Power On No alarm Alarm All Open Open Closed (Note) Same output for power off as for instrument failure. T0E.EPS Contact input : contact types : Remote measurement start, remote cleaning start, remote calibration start (only available when specified) Contact type : Voltage-free contact Contact operation: ON input resistance; 200 or less OFF input resistance; 00 k or greater Auto-clean function: Measurement tank: Water or acid cleaning selectable Head tank/sand filter: back-flush wash Auto-calibration function (optional ): Alkalinity span calibration with standard solution Diagnostic functions: Measurement out of range, ph abnormal (calibration fail), converter abnormal, titration abnormal, sample solution interrupt, reagent low, calibration solution low. Materials: Converter case; Carbon steel plate Detector case; Stainless steel Measurement tank; Acrylic resin Wetted parts; Polyethylene,polypropylene, PVC, Teflon Stanchion; Carbon steel or stainless steel (specified by model/suffix code) Reagent tank: Polyethylene Reagent level detector: Polypropylene Finish: Converter case; Baked polyurethane resin Detector; Case Baked polyurethane resin Stanchion; Baked polyurethane resin Colors: Converter case; Munsell 0.6GY3./2.0 and Munsell 2.5Y8.4/.2 Detector; Munsell 0.6GY3./2.0 and Munsell 2.5Y8.4/.2 Stanchion; Munsell 0.6GY3./2.0 Ambient temperature: 0 to 40 C Ambient humidity: 5 to 95% RH (non-condensing) Storage temperature: -30 to 70 C Installation location: Indoors (rainproof shelter required if mounted outdoors) Mounting: Secured by anchor bolts Piping connection: Water sample, cleaning water: VP6 Drain: VP40 Air: Sample conditions: Temperature: 0 to 40 C. Flow rate : to 3 l/min or less (approx. 50 g sample water per analysis) Pressure: 20 to 500 kpa 2 All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation st Edition Feb

3 Reagent: Solution: Diluted sulfuric acid (H 2 SO 4 ) Concentrations: Low range: mol/l Medium range: 0.0 mol/l High range: 0.02 mol/l Consumption: Max. 5 ml per analysis Cleaning water: Water quality: Clean water equivalent (chlorinecontaining water with turbidity mg/ or less). Temperature: 0 to 50 C Pressure: 00 to 500 kpa Consumption: approx. 50 l/day Note: Reagent is used if acid cleaning is selected by maintenance panel. Standard solution (for autocalibration): Solution: Potassium bicarbonate (KHCO3) aqueous solution as alkalinity equivalent to 80% of measuring range Air purge (using instrument air): Note : Be sure to perform air purge. Supply pressure; 40 kpa Air supply; approx. 5 l/min Power supply: 00, 0, 200 or 220 V AC, 50/60 Hz Power consumption: Approx. 50 VA or less Weight: With sampling equipment; approx. 70 kg Characteristics: Repeatability; within 2% of full scale Linearity; within 3% of full scale 3 Model and Suffix Codes Model Suffix Code Option Code Specifications AL400G Application Range Power supply Sampling equipment Autocalibration Option L -M -H NN -AD -AB -SD -SB -NN -A3 /AP /SCT Alkalinity Meter Clean water Raw water Low range (0 to 50 mg/l) Medium range (0 to 00 mg/l) High range (0 to 200 mg/l) 200V AC, 50/60 Hz 220V AC, 50/60 Hz 00V AC, 50/60 Hz 0V AC, 50/60 Hz Always -NN Included, base mounting Included, rear mounting Included, base mounting, with stainless steel stanchion Included, rear mounting, With stainless steel stanchion Without autocalibration With autocalibration With air purge pump With stainless tag plate T02E.EPS Accessories Name Qty Description ph4 buffer solution ph7 buffer solution Polyethylene bottle Wash bottle Potassium bicarbonate Syringe Fitting Tube 2 2 2m 2 packs, each for 500ml preparation 2 packs, each for 500ml preparation 500ml for ph standard solution 500ml Polyethylene 0.8 g 20ml 3 -way joint Polyethylene tube T03E.EPS All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation st Edition Feb

4 4 Consumables Auxiliary Parts Name Part No. Notes Quantities Reagent ph electrode (*3) ph4 buffer solution ph7 buffer solution Sand granules (*5) Potassium bicarbonate Syringe (20 ml) K9049MP HA K9020XA K9020XB K9720FZ K9465RA L9827NJ 0.5mol/l sulfuric acid, 3 500ml bottles Xerolyt ph electrode 2 packs, each for 500ml preparation 2 packs, each for 500ml preparation L pack for sand filter 2 packs (0.8 g) For standard solution 6 sets / year (*2) unit / year box / year (*4) box / year (*4) L / year 2 sets / year (*6) bottle/ year *: Required quantity is as referential and dependent on measurement conditions. *2: If sample is measured at 200 mg/l with 0-min cycle, maximum.5 bottles per month are required. *3: Once-a-year replacement recommended. *4: Required quantity for once-a-month calibration. *5: Once-a-year replacement recommended. *6: Required quantity for once-a-month calibration using auto-calibration. T04E.EPS Limited-life parts Name Part No. Recommended replacement interval (*) Reagent pump (00 V) (*2 ) K9465JT 3 years Air pump (00 V) (*2 ) K9087XE 3 years Solenoid (SV) K9465MC 5 years Solenoid (SV2) K9465MB 5 years Solenoid s (SV3,SV5,SV7,SV8,SV9) K9465MD 5 years Solenoid (SV4) K9465ME year Solenoid (SV6) K9465MF 5 years Motor assembly (00 V) (*2) K9465CL 3 years *: Recommended replacement interval is as referential and dependent on instrument. *2: Part numbers of items marked with *2 are for 00 V AC version. For other versions, refer to the Customer Maintenance Parts List. T04.2E.EPS Sampling Parts (for replacement) Name Sand filter assembly for raw water application Overflow tank assembly for clean water application Reagent head assembly Reagent tank assembly Reagent pump (for 00 V) Reagent pump (for 0 V) Reagent pump (for 200/220 V) Part No. K9465KF K9465KA K9465KV K9465KJ K9465JT K9465JV K9465JW T05E.EPS All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation st Edition Feb

5 5 External Dimensions Base Mounting (-AD, -SD) Unit : mm For anchor bolt (20 ) Converter Reagent head tank Air pump (optional /AP) Detector Sand filter (raw water version) or head tank (clean water version) Alkalinity calibration tank and ph standard solution tank (for - A3 autocalibration version) Reagent tank Sample inlet VP6 pipe Drain Port VP40 pipe Cleaning water inlet VP6 pipe F02E.EPS Rear Mounting (-AB, -SB) For anchor bolt (20 ) Converter Reagent head tank Air pump (optional /AP) Detector Sand filter (raw water version) or head tank (clean water version) Alkalinity calibration tank and ph standard solution tank (for - A3 autocalibration version) 450 Reagent tank Sample inlet VP6 pipe Drain port VP40 pipe Cleaning water inlet VP6 pipe F03E.EPS All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation st Edition Feb

6 6 External Wiring Diagram Alkalinity Analog output ph analog output (for capturing titration curve) (Common ) 63 G (Common ) 66 G Remote measurement start Contact input Remote cleaning start Contact input Remote calibration start Contact input L N Power input Ground (Common 2) (Common 2) (Common 2) (Common 2) Under-maintenance Contact output FAIL contact output Hi / Lo alarm contact output Under auto clean, auto calibration status contact output Note : Contact outputs share common 2 ground, common is isolated to common 2. F04E.EPS Flow Diagram SF(HP) RHT Converter Autocal.unit (-A3 version) KHCO3 ph7 ph4 Water sample (VP6) V SV6 V3 Detector V5 V6 V7 SV7 SV8 SV9 Cleaning water (VP6) V2 PU PR V4 SV HT SV3 RT ASP SV4 SV2 SV5 Reagent Rc3/8 Air () Drain (VP40) PU2(OPTIONAL) SF(HP) : Sand filter (raw water) or head tank (clean water) RHT : Reagent head tank RT : Reagent tank ASP : Aspirator 6/ 4 PE tube 8/ 6 PE tube 3/ 8 flexible wire-reinforced PVC tube 22/ 5 flexible wire-reinforced PVC tube 33/ 25 flexible wire-reinforced PVC tube VP6 rigid PVC pipe VP40 rigid PVC pipe F05E.EPS All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation st Edition Feb

7 Maintenance Space Requirements 7 Unit : mm Approx. 500 Approx. 500 Stanchion 600 Approx Front Approx For anchor bolt F06E.EPS All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation st Edition Feb

8 8 All Rights Reserved. Copyright 2000, Yokogawa Electric Corporation Subject to change without notice st Edition Feb