User manual EUTECH INSTRUMENTS ALPHA CON 190 18 DIN CONDUCTIVITY CONTROLLERTRANSMITTER

[. . . ] Instruction Manual lpha CON 190 1/8 DIN Conductivity Controller with Temperature display and Transmitter Technology Made Easy . . . 68X276107 Rev 0 11/2004 PREFACE This manual serves to explain the use of the lpha CON 190 controller/transmitter. This manual functions in two ways: first, as a step-by-step guide to help you operate the meter; second, it serves as a handy reference guide. This manual is written to cover as many anticipated applications of the lpha CON 190 controller/transmitter as possible. If there are doubts in the use of the lpha CON 190 controller/transmitter, do not hesitate to contact the nearest Eutech Instruments Authorized Distributor. [. . . ] 13 S1 P H St Y LOW 0 10 HI H G P1. 2: Set relay as high or low set point Select low set point to activate Relay when measured value undershoots Set point; select high set point to activate Relay when measured value overshoots Set point. Using both SP1 and SP2, you can select lo/lo, lo/hi, hi/lo or hi/hi set points. Key in password "022" as per procedure in Section 5. The screen will scroll P1. 2, SP1, and LOW (or HIGH). Use or keys to toggle between LOW and HIGH. Press ENTER to confirm and continue to step 3 of P1. 3, or press and keys together to return to P1. 0. Press and keys together again, to return to Conductivity measurement mode. 16 P1. 3: Set Hysteresis value Hysteresis prevents rapid contact switching if measured value is fluctuating near the set point. Once activated, relay will not de-activate until measured value reaches set point plus hysteresis value. Example: Low set point is 200. 0 µS/cm and hysteresis 100. 0 µS/cm, relay will activate when value drops below 200. 0 µS/cm, but will not de-activate till measured Conductivity value rises above 300. 0 µS/cm. Default hysteresis value is 5% of full scale. The hysteresis window can be set to any value within the range shown below: Conductivity Range 0. 00 ­ 20. 00 µS/cm 0. 0 ­ 200. 0 µS/cm 0. 0 ­ 200. 0 µS/cm 0 ­ 2000 µS/cm 0. 00 ­ 10. 00 mS/cm 0. 00 ­ 20. 00 mS/cm 0. 0 ­ 200. 0 mS/cm 0. 0 ­ 200. 0 mS/cm Range No. , R 1 2 3 4 5 6 7 8 Hysteresis Window 0. 00 ­ 2. 00 µS/cm 0. 0 ­ 20. 0 µS/cm 0. 0 ­ 20. 0 µS/cm 0 ­ 200 µS/cm 0. 00 ­ 1. 00 mS/cm 0. 00 ­ 2. 00 mS/cm 0. 0 ­ 20. 0 mS/cm 0. 0 ­ 20. 0 mS/cm 1. 5. Key in password "022" as per procedure in Section 5. The screen will scroll P1. 3, HYS1, and current hysteresis value. Press or keys to adjust hysteresis value. Press and keys together to return to P1. 0. Press and keys together again, to return to Conductivity measurement mode. 17 8. 4 Set Point 2 ­ P2. 0 Setup program P2. 0 allows you to set parameters for relay 2. P2. 1: select relay 2 set point value P2. 2: select relay 2 as low or high set point P2. 3: set relay 2 hysteresis value (dead band) P2 . 0 S2 P P . 1 2 S2 P 00 18 Press and keys together (ESCAPE) at anytime, to leave Setup mode and return to Measurement mode. P2. 1: Select relay set point value Set the Conductivity value that will activate Relay 2. If measured value overshoots or undershoots Set Point value, Relay 2 will be activated and corresponding LED on front panel will light. Key in password "022" as per procedure in Section 5. Press key until screen displays P2. 0 and SP2. [. . . ] Instead, it continues to be active till the value reaches the amount set by the Hysteresis band. FORWARD DIRECTION REVERSE DIRECTION Appendix 2: Factory Defaults Resetting the controller to factory default settings (See program P7. 0) clears all calibration data and most other setup functions. The following settings will remain unchanged: 1. Temperature compensation mode (ATC or MTC) 3. Temperature offset calibration value, if in ATC mode. Conductivity Defaults Conductivity range Set point 1 Set point 2 Temperature Defaults Temp. [. . . ]