Electro-Chemical Devices (ECD) DCA-23 User Manual

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DCA-23 Dechlorination Analyzer

3.4 OUTPUTS (4-20 mA Channels) ................................................................................................................................ 12

3.4.1 pH Output ............................................................................................................................................................ 12

3.4.2 Chlorine Output ................................................................................................................................................... 12

3.4.3 Manual Mode (4-20 mA Hold Function) .............................................................................................................. 12

3.5 ALARM RELAYS ............................................................................................................................................................ 13

3.5.1 Chlorine Alarm Relay ............................................................................................................................................ 13

3.5.2 pH Alarm Relay ..................................................................................................................................................... 13

4.0 START UP ......................................................................................................................................................................... 14

4.1 CALIBRATION ............................................................................................................................................................... 14

4.2 TEMPERATURE SENSOR .............................................................................................................................................. 14

4.3 pH SENSOR .................................................................................................................................................................. 14

4.3.1 Two Point Calibration ........................................................................................................................................... 14

4.4 CHLORINE SENSOR (TRO) ............................................................................................................................................ 14

4.4.1 TRO Calibration Example...................................................................................................................................... 15

5.0 MAINTENANCE ................................................................................................................................................................ 16

5.1 Chlorine TRO Sensor ................................................................................................................................................... 16

5.2 pH Sensor .................................................................................................................................................................... 16

6.0 TROUBLESHOOTING ........................................................................................................................................................ 17

7.0 ORDERING INFORMATION .............................................................................................................................................. 18

7.1 ACCESSORIES and SPARE PARTS ................................................................................................................................. 18

8.0 ENGINEERING DOCUMENTATION ................................................................................................................................... 19

8.1 SPECIFICATIONS .......................................................................................................................................................... 19

8.2 OUTLINE & DIMENSIONAL DRAWING ......................................................................................................................... 21

PN 1290220 ................................................................................................................................................................... 21

8.3 WIRING DIAGRAMS ..................................................................................................................................................... 21

PN 1290220-1 ................................................................................................................................................................ 21

PN 1290220-2 ................................................................................................................................................................ 22

PN 1290220-3 ................................................................................................................................................................ 22

PN 1290220-4 ................................................................................................................................................................ 23

PN 1290220-5 ................................................................................................................................................................ 23