User manual EUTECH INSTRUMENTS ALPHA TDS 190 18 DIN TOTAL DISSOLVED SOLIDS CONTROLLERTRANSMITTER

[. . . ] Instruction Manual lpha TDS 190 1/8 DIN Total Dissolved Solids Controller with Temperature display and Transmitter Technology Made Easy . . . 68X276108 Rev 0 11/2004 PREFACE This manual serves to explain the use of the lpha TDS 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 TDS 190 controller/transmitter as possible. If there are doubts in the use of the lpha TDS 190 controller / transmitter, do not hesitate to contact the nearest Eutech Instruments Authorized Distributor. [. . . ] MTC: MTC lets you select a specific value at which temperature will be compensated. Press CAL / ENTER key to directly access the offset mode when the unit is in temperature measurement mode. NOTE: Instead of pressing the CAL/ENTER key, you can also enter the offset mode using the password code procedure as explained in Section 5. For ATC: Determine temperature of solution with an accurate meter (such as the Temp 5). Press or keys to offset oC value on controller display to match value of the solution you are measuring. For MTC: Press or keys to offset oC value on controller display to match desired value. The display flashes "DONE" for about 3 seconds and returns to measurement mode. 22. 5 25. 0 ENTER 5. dn oe 13 8 SETUP MODE 8. 1 General Information IMPORTANT: When Setup mode is entered, controller automatically goes into a "HOLD" mode where the 4-20 mA output freezes and relays are de-activated (if it was in an activated condition). Upon return to measurement mode, both 4-20mA output and relay activities resume, depending on settings. When a sub-menu item is displayed, press ENTER key to enter that submenu. Press and keys together (ESCAPE) to leave Setup mode and return to Measurement mode (Relays and 4-20 mA output resume previous settings). 1 P . 0 P . 0 2 P . 0 3 P . 0 4 P. 6 P . 0 7 P . 0 6 P . 0 5 14 8. 2 Setup mode overview P1. 0: Set Point 1 P1. 1: select relay 1 set point value P1. 2: select relay 1 as low or high set point P1. 3: set relay 1 hysteresis value P2. 0: Set Point 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 P3. 0: Range P3. 1: select measurement range (with the corresponding cell constant value). P4. 0: Temperature Data P4. 1: select ATC or MTC P4. 2: select temperature coefficient value P4. 3: select normalization temperature P5. 0: TDS Calibration points P5. 1: view TDS value at which calibration was performed P6. 0 Electrode Properties P6. 1: view cell constant value after calibration P6. 2: view temperature offset value after calibration (only if in ATC mode) P7. 0: TDS Factor P7. 1: select TDS factor for appropriate application P8. 0: Reset P8. 1: select yes/no to reset controller to factory defaults 15 8. 3 Set Point 1 ­ P1. 0 Setup program P1. 0 allows you to set parameters for relay 1. P1. 1: select relay 1 set point value P1. 2: select relay 1 as low or high set point P1. 3: set relay 1 hysteresis value (dead band) P . 0 1 S1 P P . 1 1 S1 P 100. 0 P . 2 1 P. 100 HI GH Press and keys together (ESCAPE) at anytime, to leave Setup mode and return to Measurement mode. P1. 1: Select relay set point value Set the TDS value that will activate Relay 1. If measured value overshoots or undershoots Set Point value, Relay 1 will be activated and corresponding LED on front panel will light. Press ENTER to confirm and continue to step three of P1. 2, or press and keys together to return to P1. 0. 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. Press ENTER to confirm and continue to step 3 of P1. 3, or press and keys together to return to P1. 0. 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. [. . . ] When your process exceeds the set parameters of a relay set point, the REL 1 or REL 2 indicator will light up. To set parameters for relay 1 and relay 2, see Setup programs P1. 0 and P2. 0. 10 TRANSMITTER FUNCTION If remote data logging is required, a 4-20 mA current loop can be connected. The current will be proportional to the TDS value displayed on the panel and according to the measurement range selected. TDS Range 0. 00 ­ 10. 00 ppm 0. 0 ­ 100. 0 ppm 0. 0 ­ 100. 0 ppm 0 ­ 1000 ppm 0. 00 ­ 5. 00 ppt 0. 00 ­ 10. 00 ppt 0. 0 ­ 100. 0 ppt 0. 0 ­ 100. 0 ppt Range No. , R 1 2 3 4 5 6 7 8 Cell Constant 0. 1 0. 1 1 1 1 1 1 10 4 mA current 0. 00 ppm 0. 0 ppm 0. 0 ppm 0 ppm 0. 00 ppt 0. 00 ppt 0. 0 ppt 0. 0 ppt 20 mA current 10. 00 ppm 100. 0 ppm 200. 0 ppm 1000 ppm 5. 0 ppt 10. 0 ppt 100. 0 ppt 100. 0 ppt The 4-20 mA current loop can drive a load resistance of no more than 200 . 26 11 SPECIFICATIONS TDS Range 0. 00 ­ 10. 00 ppm 0. 0 ­ 100. 0 ppm 0. 0 ­ 100. 0 ppm 0 ­ 1000 ppm 0. 00 ­ 5. 00 ppt 0. 00 ­ 10. 00 ppt 0. 0 ­ 100. 0 ppt 0. 0 ­ 100. 0 ppt Relative Accuracy Temperature Resolution/Accuracy Sensor Temperature Compensation Temperature Coefficient TDS Factor Normalization Temperature Set-point And Controller Functions Function Switching Hysteresis Contact Outputs, Controller Switching Voltage / Current / Power Signal Output / Load Electrical Data And Connections Power Requirements Rated Input Current (MAX) Insulation Category Connection Terminals Main Fuse Environmental Conditions Ambient Temp. 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