DPD colorimetric Polarography 0 to 2 mg/l 0.01 mg/l Within ±2.5% FS Within ±2.5%FS

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1 Compact City-Water Analyzer Model MWB4-7 This analyzer is for continuous monitoring water quality (Maximum seven parameters) at faucet feed line or water receiving tank of a building. In addition to the three items of turbidity, color, and residual chlorine, which are specified by law to be inspected daily, this analyzer can optionally conduct measurements of the electric conductivity, ph, water temperature, and water pressure. The compact B4-size allows the MWB4-7 to be installed in narrow spaces. The MWB4-7 also delivers high reliability, durability, and excellent maintainability. Features Safe design-easy to read and operate ) The real-time readouts of the items measured appear on the large color display on the front panel. Along with readouts, the display also provides trend indication. This convenient feature makes it possible to analyze the cause of abnormality by referring the anteroposterior trends. ) The operating part consists of an easy-to-read interactive touch panel. ) The electrical part and analyzer are kept separate. This ensures the electronics remain insulated while protecting users from potential electric shock. High reliability ) This analyzer features a unique debubbling method that effectively minimizes the formation of bubbles in turbidity and color measurements. In the event bubbles accidentally mingle, they can be completely removed by backwashing. These capabilities enable the analyzer to improve stablity of turbidity and color measurement remarkably. ) Time-proven non-contact swing rotary type electrode is adopted for chlorine electrode. It enables stable measurement for long period in the combination with unique ceramic beads cleaning even sample flow is fluctuated. ) This analyzer comes with an electronic dehumidifier designed to keep dew condensation from forming inside the unit. Eliminating dew condensation not only prevents rust from accumulating inside, but also enhances the durability of the equipment. Wide variety of output options In addition to DC 4- ma analog output, this device is also standardly equipped with two digital communication interfaces, RSC and RS485. These two interfaces support the remote monitoring system. Enhanced maintenance and operational performance ) Operations (such as cleaning and zero calibration) can be remotely controlled from the host system is possible via the use of contact signals or the digital signal interfaces RSC or RS485. The effective remote control of operations can help cut down on labor and costs. ) One minute values are stored in the internal memory in -month intervals, and one hour values are stored in - year intervals. A memory card (optional) can also be inserted in the factory-supplied slot, making it possible to store and carry the data without the need for a computer. ) The self-diagnostic feature provides advance notice about the current condition of the system, helping to make maintenance more efficient. It issues two different signals, Caution and Warning, thereby enabling users to identify the severity of the problem.

2 Measurement items and performance Measurement Measurement method Measurement Minimum item range indicated value Linearity Repeatability Calibration method Turbidity Transmitted light method to /4 degrees. degrees Within ±.5% FS Within ±% FS PSL standard solution Color Transmitted light method to / degrees. degrees Within ±5%FS Within ±% FS Color standard solution Residual DPD colorimetric Polarography to mg/l. mg/l Within ±.5% FS Within ±.5%FS chlorine method Electric to 5 ms/m. ms/m AC -pole method conductivity or to 5µS/cm or µs/cm Within ±%FS Within ±%FS KCl standard solution ph Glass electrode method ph to. ph Within ±. ph Within ±. ph ph7/9 standard solution Temperature Water pressure Platinum resistance Reference to 5 C. C Within ±.5 C Within ±.5 C thermometer method thermometer to MPa. MPa Reference DMOS* method Within ±.5% FS Within ±.5%FS or to 9m or.m pressure gauge *DMOS: Double-diffused metal-oxide semiconductor. Standard Specifications Product name Model Objects measured Measurement range switching Display Temperature compensation range Response time Operating power Power consumption Transmission output Load resistance Contact switching output signals Contact switching input signals : Compact City Water Analyzer : MWB4-7 : Three basic items (turbidity, color, and residual chlorine), electric conductivity, ph, temperature, and pressure : Ability to switch between two ranges for both turbidity and color measurements. : Color LCD touch panel : to 4 C for residual chlorine, EC, and ph : 9% response within three minutes : to 4V AC ±%, 5/Hz : Approx. /8 VA (/4V AC), max. of approx. 85/8 VA (/4V AC) : DC 4 to ma, isolated ( Negative (-) side is common.) : Ω or less : Alarm ; General alarms (measured value High-High/Low-Low limit alarm, light source error, residual chlorine motor error, sensor error, and start-up mode error) Alarm ; General alarms (concentration upper/lower limit alarm, water temperature compensation error, and auto calibration error) Maintenance; When in ST-BY mode Event; During auto cleaning, during auto calibration, and during problem diagnosis (Contact capacity for all of the above; 4 VDC.A resistance load)) Power cut off; The contact is closed when a power failure occurs. (Contact capacity; VDC.A resistance load)) : Cleaning command; Start cell window cleaning (turbidity/color) Calibration request; Start automatic zero calibration (turbidity/color/residual chlorine) (Resistance load; Ωor less, Pulse duration: 5mS or greater) Communication system Save functionality conditions Sample consumption Wetted part materials Piping end connection Installation Wiring end connection Ambient conditions Weight : RSC interface or RS485 interface (isolated) Communication speed; 9 BPS Synchronous system; Start-stop synchronization Control system; Half-duplex communication system One line for communication (dedicated cable or connector), one line for maintenance (D-SUB connector) : Data such as measurements can be transferred to a memory card. They can also be processed by a computer. One minute measurement values can be stored in -month intervals, and one hour values can be stored in -year intervals. : No suspension or stagnation. Quality; Ensures that the water quality (excluding the items below) satisfies the water quality standards set by the Water Law or falls within the measurement range of this unit. Temperature; to 4 C (no freezing) Pressure;.5 to.75 MPa ph; 5.5 to 8. ph (maximum fluctuations; ph) EC; 8 ms/m (8µS/cm) or greater Flow rate; 5 to ml/min : 4.5 m /month or less (9 m /month, including a by-pass flow of ml/min) : Polyurethane, PP, acrylic, stainless steel, FKM, etc. : inlet; Rc /4 Drain outlet; Rc /4 Calibration solution inlet; Rc /4 Air purge; Rc /4 : Mounted on a wall or rack : Two water-proof connectors A power supply cable and I/O signal cable (-meter) are also included. : to 4 C (no freezing), 85% RH or less (no condensation) : Approx. kg

3 Construction : Indoor installation (IP4 equivalent) Case material : Aluminum Color : Light gray (Munsell 5PB 8/ equivalent) Automatic calibration : Zero calibration for turbidity, color, and residual chlorine. The internal timer and an external contact signal are used to start calibration. (Zero water is prepared by filtering sample water through a zero water filter.) Calibration cycle setting; to 4 hours (freely specified) Calibration time; Approx. min. (fixed) Transmission output hold time during calibration; Calibration time approx. min. + 9 min. (fixed) Automatic cleaning : The internal timer and an external contact signal are used to start backwashing (by draining the water) to clean the cell window for turbidity and color measurements. Cleaning cycle setting:, 5,,, or min. Transmission output hold time during cleaning; Cleaning time approx. min. + min. (fixed) Beads cleaning of residual chlorine electrode by self-rotation Options : Indoor self-standing frame (preassembled, piping pre-installed) Outdoor cubicle (temperature-controller included) Water sampling unit for abnormal time Internal leakage detection unit Dimensions Unit : mm 48 inlet Rc / 4 55 Calibration solution inlet Rc / 4 VIEW A 5 4 Condensate outlet 5 Drain outlet Rc / 4 Maintenance clearance of 45 or more Maintenance clearance of 75 or more.5 85 Four M8 size mounting screws Ground terminal Display Maintenance clearance of 5 or more 9 Power cable Electronics component Analyzing component 5 Vent 5 Signal cable Mounting bracket 7.5 Rc / 4 7 Dehumidifier supply valve A Calibration solution supply valve

4 Flow sheet Electric conductivity detector Turbidity/color detector Temperature detector SV4 SV NC SV C C SV NO C NO O NO NC NC Residual ph chlorine detector detector F Th Vent No. BV BV SV SV SV SV4 Th F PR O Description supply valve Calibration solution supply valve Wash water solenoid valve Drain solenoid valve Zero water switching solenoid valve Vent solenoid valve Temperature compensation sensor Zero water filter Water pressure reducing valve Orifice Pressure detector PR Set pressure.5mpa Detectors for specified measurement items can be added (Maximum seven items). BV inlet Blow-off drain By-pass valve Condensate BV Drain outlet outlet Calibration solution inlet Flow rate: 5 to ml/min Strainer ( to mesh) Input/Output Signal Table Stop valve supply pressure:.5 to.75 MPa Connector No Line color Black White/ Black Red White/ Red Green White/ Green Yellow White/ Yellow Brown White/ Brown Blue White/ Blue Gray White/ Gray Orange White / Orange Purple White / Purple Bright green White / Bright green Peach White / Peach Azure White / Azure White Black/ White Black / Green Red/ Green Black / Yellow Red/ Yellow Black / Brown Red/ Brown Black / Blue Red/ Blue Black / Gray Red/ Gray Shielding wire Signal type Analog output DC 4 to ma Contact input (Pulse) Contact output (Status) Analog input DC 4 to ma Digital output RS C None Digital output RS 485 Grounding Signal description + Turbidity measurement value - + Color measurement value - + Residual chlorine - measurement value + Electric conductivity - measurement value + ph measurement value - + Water temperature - measurement value + Water pressure measurement - value Cleaning command Calibration command Spare Spare COM COM Alarm Alarm Maintenance Event Spare (for option) Power cut off + Converted to digital output - Flow meter, water gauge, etc. R x D T x D COM + - COM D-type m Waterproof connector ø5 Core wire (line color) Signal cable

5 Touch panel and control screen Mode "Alarm" is displayed. (Press here to display the alarm list.) Clock Measurement values (Press a value to view the individual setting details.) Serial No If you press word or numeric displayed on the left screen, the screen will be switched over or the selected task will be executed. Entry displayed Measurement values Mode Clock Alarm Serial No. Go to Trend Status Go to Maintenance Mode Description Displays the real-time measurements for each item during automatic measurement. Displays "Measuring" or "Maintenance". Displays the time. Displays "Alarm" when an alarm is issued. Displays the serial number. Pressing this button graphs the trends in the data. Pressing this button displays the auto-cleaning and calibration settings. Pressing and holding this button brings up the Maintenance Mode screen. Installation Diagram Ground terminal D-type grounding Power connector.5 Maintenance clearance 5 or more or more Vent tube ø (supplied) Four M8 size mounting screws I/O signal connector Signal cable (m) Power cable (m) (mounting dimensions) tube with an inside diameter of ø4 or greater (never use a metal tube) 9 (Mounting dimensions) Drain tube with an inside diameter of ø4 or greater (never use a metal tube) Power plug By-pass valve (flushing) Adapter plug -terminal wall socket Do not use a drain tube that is water sealed Do not use a drain tube that can be easily disconnected Wall socket and ground terminal Stop valve Strainer ( to mesh) VP. Installation conditions Install the analyzer in a location that satisfies the following criteria: a) A location that is not exposed to rain, wind, or direct sunlight. b) A location where sample water meeting 4. condition such as temperature and pressure etc. mentioned below, can be drawn. c) Vibration-free location d) A location where an electric device causing electric noise is not placed near by. e) A location with sufficient space around the analyzer that allows for safe and easy access during maintenance.. Mounting The analyzer is designed to be hung on a wall or mounted on hooks. Before mounting the analyzer, make mounting holes in the wall, and then use four M8 screws to fix the unit in place. Make sure the upper surface of the main unit is horizontally level. Weight: Approx. kg. Piping a) Use tubes for the sample water and drain piping to minimize the load applied on the valves of the main unit. b) Because pressure is applied to the piping on the supply side, use metal connectors (stainless) for the tube joints. c) Install both a stop valve and by-pass valve (which is also used for Drain VP5 Example piping flushing) on the supply side. Although the minimum required flow rate is between 5 to ml per minute, we recommend maintaining a flow rate of to ml per minute for the water* flowing through the by-pass valve. *Water that initially flows from the faucet. (This prevents water from stagnating and leads to shorter response times, resulting in more accurate measurements.) Depending on the quality of the sample water, a strainer ( to mesh) can also be installed when needed. d) Make sure the end of the drain pipe is open to the atmosphere. e) Specify a length of pipe between the measurement point to the analyzer that enables the sample water to reach the analyzer in to 5 minutes. Example: Approx. to 5 meters at A (ø4 x ø size tubes, no greater than meters) 4. Sample conditions a) No suspension or stagnation. b) Consistent with the quality standards for city water set by the Water Law. c) Temperature: to 4 C (no freezing) d) Pressure:.5 to.75 MPa e) Flow rate: 5 to ml/min f) If air bubbles excessively mingled into sample water, it is required to arrange de-bubbling process in the preceding step to analyzer such as arrangement of bypass.

6 Standard accessories list No Code No. Part name Sketch Qty Remarks 45A 45B 4A88 G 8G 8C54 778K 594 C57 C9 4F9 4F9 Instruction manual Inspection report Glass tube fuse 5V, ma Ceramic beads ø.5 g Power cable Adapter Signal cable Calibration solution tank L Beaker ml PP wash bottle 5mL ph.8 standard solution LPB-A8 5mL ph9.8 standard solution LPB-A4 5mL m long Adapter for the power cable m long Only when the ph measurement Spare parts list No. Code No G 4F 4F ELP-5 795K E54 5A 5A5 5A448 5A59 4C4 Part name Ceramic beads ø.5 g Buffer powder ph.8 for 5 ml 5-pack Buffer powder ph9.8 for 5 ml 5-pack ph electrode Motor for residual chlorine Urethane tube ø4 transparent O-ring P O-ring P5 O-ring S8 O-ring S.4 Silica-gel g blue *:Consumables *:Parts for periodical inspection *:Replacement cycle Quantity Sketch * Remarks * * Spare 4 m year months year Only when the ph measurement Only when the ph months measurement months year CL beads case Dryer case months and cover months 4 55K 4C4 Span calibration tube assembly Silica-gel g blue 7E A7 Fixed orifice Filter cartridge year Cartridge for the zero water filter D 5A59 5A448 5A Silicon grease (for high vacuum) O-ring S.4 O-ring S8 O-ring P Dryer case and cover CL beads case Only when the ph measurement 4 5 4C5 4D9 4D5 Color standard solution degrees ml Turbidity standard solution PS degrees ml EC check solution 5 ms/m Only when the EC measurement. 9 5A5 O-ring P5 7B49 Vent fitting B5 PE tube ø4 x ø m ELP 7 ph electrode 758 Back-up collar Tube for the open air Only when the ph measurement ph collar Special accessories Piping parts (construction materials, sold separately) Product name Code No. Use/Specification Flow meter 7A9, to ml/min PFA tube D, ø4 to ø x m Metal connector 7A5 inlet, R/4 SUS Insert for metal connector 7B9 Half union (coupling for tubes) 7B45 Drain outlet, R/4 PP Y-type strainer 7J985 /4 SUS mesh Flow control valve B8 by-pass, /4 PVC Memory card (dedicated) Code number: 754K (compact flash ASSY) 5 MB (carry case included)

7 Indoor self-standing frame Vent supply valve 5 Calibration solution supply valve Frame By-pass valve stop valve inlet Drain outlet (maintenance clearance) 5 (maintenance clearance) 5.5 ø4 (4) 4 I/O terminal cable 8 5 (Maintenance clearance) Dew condensate water outlet (4) 4 VIEW A 4 Drain pot Power supply cable Condensate outlet Calibration solution inlet Product code MWB47-- A B Custom spec. code; Numeric digit: 9 Alphabet: Z A Y A B C D A B Measurement items Three basic items: Turbidity, color, and residual chlorine In addition to these items, other items can also be measured. Measurement items: EC added Added (unit: ms/m) Added (unit: S/cm) Measurement items: ph added: Added Measurement item: Temperature added Added Measurement item: Water pressure added Added (unit: MPa) Added (unit: m) Measurement range and unit * Standard (as shown in the table on the right) Custom specifications Configuration Main unit only (mounted on a wall or on racks) Assembled on an indoor self-standing frame * Mounted in our standard local cubicle (optional) * Mounted in the custom local cubicle (optional) * 4 Communication system (optional) * 5 FOMA (packet communication) Router (public telephone line, ISN4, etc.) Optional unit * Water sampling unit for abnormal time Internal leakage detection unit Display Standard English *. Standard measurement range and unit Measurement item Measurement range/unit Turbidity to /4 degrees (dual range) Color to / degrees (dual range) Residual chlorine to mg/l 4 Electric conductivity to 5 ms/m, or to 5 µs/cm 5 ph ph to Water temperature to 5 C 7 Water pressure to MPa, or to 75 m In case that other customers' specifications are required, please contact us regarding availability of such specifications. *. For indoor installation. The piping for the sample water IN/OUT and other items are preinstalled. *. Compact and designed to be set up outdoors (temperature-controller included). For details about the manufacturing specifications, refer to the next page. *4. For details about custom specifications, please consult with one of our sales representatives. *5. For details about available communication equipment, system model names (of the protocol converter and other devices) and data processing software specifications (such as for MEX), please consult with one of our sales representatives. *. The water sampling unit for abnormal time or internal leakage detection unit can be added as an option.

8 Manufacturing specifications for standard outdoor cubicle This is our standard compact outdoor cubicle used to house the MWB4-7. It can also be used to house communication equipment. Construction Materials Board thickness Surface finish Power requirements Power consumption Wiring end connection : IPD, rainproof for outdoor use (sun shade included) Front door (doorstop included) : SS4 (steel), SPCC (sheet steel) : L4 x t5 (SS4), t. (SPCC) : Metallic silver, semi-gloss Acrylic paint baked-on finish (cubicle), polyurethane paint baked-on finish (sun shade) : AC Line ± % 5/ Hz. : Max. VA including MWB4-7 (consumption varies depending on the ambient temperature.) : Three G/4 Piping end connection Weight Wetted part materials : inlet; Rc/ Drain outlet; Rc / : Approx. kg (including MWB4-7) : SUS4, rigid PVC, PFA tube : -5 to 4ºC, 85% RH or less (no freezing) : Ambient conditions Equipped devices Product name Rating Heat exchanger Max. W Dehumidifier - Panel heater Max. W Breaker 5 AT Lightning protection transformer VA Door handle Key No. 58 (4) 4 (4) NP Heat exchanger 5 Compact City-Water Analyzer Piping and wiring section Piping and wiring section 5 A 58 (5) 4 4 (4) (4) NP (equipment name plate): Please provide the information to be inscribed on the plate (5) 5 8 inlet 8 5 Vent Manual analysis tube entry Wiring section Drain outlet VIEW A International Operations: DKK-TOA Corporation 9-, -Chome, Takadanobaba, Shinjuku-ku, Tokyo Japan Tel : Fax : Information and specifications are for a typical system and are subject to change without nofice. Issued on 4//