WDM-135A (2-wire type) WDM-136A (4-wire type) CONDUCTIVITY TRANSMITTER. Functions Features. Structure diagram. 10/ cm (note 3) 2-wire system

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1 CONDUCTIVITY TRANSMITTR WDM-A (-wire type) WDM-6A (-wire type) It is a type of small firm aluminum -electrode site-installation CONDUCTIVITY TRANSMITTR (signal transmitter) and easy operate. The device is divided in -wire type (V DC power supply) and -wire type (free power supply AC), and the transmission output is 0mA DC. Please additionally refer the detailed specification of conductivity meter detecr for the details. Functions Features Large measurement range It has large measurement range from ultrapure water (0 0.μS/cm) plant drainage (0 0mS/cm) and large temperature compensation range of - 0 C. according the cell constant of detecr, the following measurement range is available for selection. 0/ cm (note ) Measurement range (note ) Changeable measurement range As shown in the table above, the cell constants are changeable in 0 types of measurement range. For example, if the cell constant is 0./cm, it can be changed between 0.00μS/cm and μS/cm. Temperature display The measured sample water temperature (- 0 C) is displayed. Measured value adjustment The measured value can be adjusted based on the conductivity value of secondary standard meter, etc. (Adjustment extent ±0% of measured value). Self-diagnosis Aumatic recovery measuring mode If the maintenance mode lasts for hours, the measuring mode will be recovered aumatically. Unit (note ) (Note ) quivalent value (Note ) S/m unit system can be also made. (Note ) If the cell constant is 0/cm high conductivity, it is recommended use the electromagnetic induction type conductivity meter with better stability. Structure diagram Converr WDM - A type -wire system Detecr <Instrument room> Power transmission output (V DC 0mA) Distribution board C- 0 type 0m A6 type <Site> Receiver DC power supply Indicar Recorder Regular DCS, etc. AR type Converr WDM -6A type -wire system <Site> <Instrument room> Detecr C- 0 type Transmission output ( 0mA DC) Receiver 0m A6 type AR type Instrument power supply 00 0V AC or 00 0V AC Indicar Recorder Regular DCS, etc.

2 Standard specification Product name Model Measuring method CONDUCTIVITY TRANSMITTR WDM-6A (-wire type) WDM-A (-wire type) AC -electrode method Min. 0 0.μS/cm Max. 0 0mS/cm Measurment range Or Min. 0 0 μs/m Max mS/m (Temperature - 0 C, only displayed, no transmission output) Display method -bit electronic LCD Compensation range - 0 C Conversion temperature C Temperature compensation Temperature characeristic Conductivity temperature characteristic of NaCl solution Accuracy within ±.0%FS (equivalent power) Linearity Performance Within ±0.%FS (equivalent input) Repeatability Transmission output Within ±0.%FS (equivalent input) 0m A DC insulating type resistive load less than 60Ω Power supply Power consumption V±0% DC Less than 0.6VA 90 V AC or 80 6V 0/60Hz AC About VA Ambient temperature humidity Structure -0 C, less than 99% (RH) (but no condensation) Outdoor installation, IP (dust proof type, shunt preventing type) Overall dimensions 8 (W) 9 (H) 78 (D) mm Installation method Weight 0A pipe is used About kg Wiring interface Main body Materials positions of G ¾ (PF ¾F) Aluminum alloy casting Observation window Resin Assembly part Coating color SUS 0 Metal silver and blue Terminal diagram Operation switch display position WDM-A type (-wire type) Digital meter 0 Grounding terminal Mode switch Carl switch Standby switch Standard (NAS) measuring mode Standby (ST-BY) maintenance mode Power transmission cable WDM-6A type (-wire type) Main display part The device will be aumatically started after being powered on for several seconds, and all lights will be on for testing. Standby symbol Wait symbol Temperature unit Grounding terminal Unit Display position Main Display Position Transmission output cable Power cable

3 Outline dimensions Unit mm Display position WDM-A type (-wire type) 78 Assembly part (0A pipe is used) (The installing support can be changed left and right) Power supply transmission cable wiring interface G/ (PF/) φ, cable filler attached wiring interface G/ (PF/) 6 WDM-6A type (-wire type) Assembly part (0A pipe is used) (Assembly part can be changed left and right) Power cable wiring interface G/ (PF/F) (φ, cable filler attached) Transmission output cable wiring interface G/ (PF/), φ, cable filler attached wiring interface G/ (PF/) Hood (optional) Materials Installation method Code No. SUS0 Installed on the 0A pipe 9K 0 Installed outdoors; recommended be used in case of exposure direct sunlight.

4 -wire line connection diagram Detecr WDM-A model Converr Power transmission output ( 0mA DC) 0 D type D type Receiver (Less than 60Ω) V DC DC power supply -wire line connection diagram Detecr WDM-6A type Converr AC power supply 9 Transmission output ( 0mA DC) D type D type Receiver (less than 60Ω)

5 Product code *. and Measurement range 0.0/cm (Please specify the measurement range from the table below) 0./cm (Please specify the measurement range from the table below).0/cm (Please specify the measurement range from the table below) cm unit system above 0.0/cm (Please specify the measurement range from the table below) m unit system below.0/m (Please specify the measurement range from the table below) 0.0/m (Please specify the measurement range from the table below) 00/m (Please specify the measurement range from the table below) 000/m (Please specify the measurement range from the table below) Surface working (coating) * Standard coating Heavy corrosion preventing coating Built-in surge arrester* No Yes Wiring interface adapr integration No G¾ (PF¾) standard G½ (PF½) SU0 NPT½ SUS0 NPT¾ SUS0 Hood or not (sunshade) No Yes (code No.9K) Mark form Japanese Designated nglish Combined detecr No* Making simultaneously Please select the test range of designated S/cm unit system from the table below. (Not made except for the specifications below) Measurement range (unit S/cm, displayed in the LCD) *. Please select the test range of designated S/cm unit system from the table below. (Not made except for the specifications below) Measurement range (unit S/m is displayed at the sealing part) *. The standard coating method is spray melamine resin up and down with the average film thickness of more than 0μm. The heavy corrosion preventing coating method is spray epoxy resin at the middle and lower parts and spray polyurethane resin at upper part with the film thickness of more than 00 μm. *. The porcelain surge arresr (simple type) is installed on the power transmission line. *. In case of " No. " please notify the length of cable installed.

6 Product code cm unit system above m unit system below *. Supply voltage AC 90V~V 0/60Hz 80V~6V 0/60Hz AC and measurement range 0.0/cm (Please specify the measurement range from the table below) 0./cm (Please specify the measurement range from the table below).0/cm (Please specify the measurement range from the table below) 0.0/cm (Please specify the measurement range from the table below).0/m (Please specify the measurement range from the table below) 0.0/m (Please specify the measurement range from the table below) 00/m (Please specify the measurement range from the table below) 000/m (Please specify the measurement range from the table below) Surface working (coating) * Standard coating Heavy corrosion preventing coating Built-in surge arresr* No Yes Wiring interface adapr integration No G¾ (PF¾) standard G½ (PF½) SU0 NPT½ SUS0 NPT¾ SUS0 Hood (sun shade) No Yes (code No. 9K) Mark form Japanese Designated nglish Combined detecr No* Making simultaneously Please select the test range of designated S/cm unit system from the table below. (Not made except for the specifications below) Measurement display range (unit S/cm, displayed in the LCD) *. Please select the test range of designated S/cm unit system from the table below. (Not made except for the specifications below) Measurement display range (unit S/m is displayed at the sealing part) *. The standard coating method is spray melamine resin up and down with the average film thickness of more than 0μm. The heavy corrosion preventing coating method is spray epoxy resin at the middle and lower parts and spray polyurethane resin at upper part with the film thickness of more than 00 μm. *. The porcelain surge arresr (simple type) is installed on the power transmission line. *. In case of no, please notify the length of cable installed.

7 Sample Conditions Temperature 0~00 C Typical Combination Detecrs Pressure max. MPa max. 0. MPa for AR type Product Name Conductivity Detecr Model Materials A6 cell, AR cell Main body SUS 6 Titanium for AR cell Cell Constant A6 cell...0.0/cm,0./cm,.0/cm AR cell (Compact, For Pure Water)...0./cm Temperature Sensor Thermisr type (enclosed in inner pole) lectrode Insulation glass, PTF FKM,PPS for AR cell Connecr box cast aluminum Case SUS 6 or polypropylene (PP) Piping Connections R/ thread or Flange C-0 type (OD φ8) Thread type 0 A6- type A6- type A6- type Wiring interface AR- type Assembly screw 7 0 Minimum liquid level Water-proof connecr Opposite side 9 hexagon Rc 0 7 R 0 Shell Connecr box lectrode position lectrode position Connecr box Shell type Flange type A6- type A6- type A6- type 0 Wiring interface Connecr box A6- type A6- type A6- type Wiring interface Sample outlet 60 Minimum liquid level lectrode position Sample inlet The dedicated cable is used for conductivity meter between the transmitter and detecr Model Outer diameter Insulating matter xternal coverage Insulating resistance between cores xtended distance Standard length Weight C-0 φ8 PP and plastic Plastic more than 0MΩ/00m Conducr (0.mm) Mixing Adhesive tape pasting Sealing PVC outer coverage PP insular (blue) Max. 0 m, not available connect in the middle. m 0m, in unit of m about 0.kg/m PP insular (natural color) Semi-conductive PVC Sealing PT adhesive tape PP outer coverage (black) Conducr (0.mm) PP insular (green) PP insular (red) C-0model Sectional view

8 Relevant equipment Prepare the power supply for -wire converr. Please order as per the demand. Power supply PA- Model + Rated output voltage V- V DC Rated output current ma ( meters cannot be connected in parallel) Supply voltage 00V±0% 0/60Hz AC Ambient temperature - C for indoor application, insertion type Structure Weight about 00 g General lerance ±mm V output Transmission output (-, +) (Mounting hole) Terminal block transmission output signal; 0mA DC can be acquired. Power supply (7, 8) CAUTION arth () Please read the operation manual carefully before using producuts. Overseas Sales Division DKK-TOA Corporation 9-0, -Chome, Takadanobaba, Shinjuku-ku, Tokyo Japan Tel Fax http// Information and specifications are subject change without notice. Issued on //08