User manual HANNA INSTRUMENTS HI 83540

[. . . ] These instruments are in compliance with directives. TABLE OF CONTENTS 1 THEORY OF FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. 1 Irrigation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. 2 Conductivity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3. 3 Fertilization Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Program Number Reflects the selected program (can be selected only inside panel C 03). mS The EC average for the indexed program. System clock 5. 3. 6 SECTOR AVERAGES ­ C 24 From: 09-26 13:37;12 05. 3pH Sect 01/01 06. 7mS 13:15 SECTOR AVERAGES C24 This panel provides an average pH and EC reading for each of the irrigation sectors. This panel contains the following information: From Time stamp indicating the start of recording (statistics). pH The average pH reading for the indexed valve. Sect The sector number (label) / valve number (index for this panel). mS The average EC reading for the indexed valve. System clock 36 5. 4 ALARMS CONSULTING 5. 4. 1 ACTIVE ALARMS ­ C 25 Low level fert: 4 ACTIVE Alarm 26-12 14:36:22 13:15 ALARM 02/07 C25 This displays the active alarms current in the system. Once viewing the panel all of the alarms can be scrolled and viewed using the UP and DOWN or ENTER keys. This panel contains the following information: Alarm Description Time of alarm occurrence. Alarm The alarm number and (/) total number of all active alarms. Time stamp Time stamp of logged occurrence. Log record number Log consulting level System clock 5. 6 GENERAL SETTINGS The Setting panels provide an interface by which the user can set up the functionality of the Fertigation Controller to suite the application requirements. The parameters in any setting panel can be modified only if the user presses the SET key (entering the setting mode). Once pressing the SET key the cursor (focus) is passed to the first adjustable parameter on the panel. Using the keypad along with the arrow keys the user can set the desired parameters and navigate within the panel. In SET MODE panel the browsing methods are disabled until the user exits from SET MODE by pressing the ENTER (validation) or ESC (cancel) key. To change program number you must go to panel C 03 and then continue. 5. 6. 1 SET DATE & TIME ­ S 30 Date: Time: SET Fri-22-09-2000 17:03:20 17:03 DATE & TIME S30 This panel allows the setting of the following parameters: Date Day / Month / Year format. The day is automatically updated once the numeric date is entered and confirmed. The time is automatically updated once the numeric time is entered. System clock 39 5. 7 PROGRAM SETTINGS 5. 7. 1 ACTIVE TIMETABLE ­ S 31 Between Prog 07 Date: 01-04 31-10 Time: 07:00 23:00 ACTIVE TIMETABLE S31 This panel allows the user to set the scheduled limits for the indexed program. [. . . ] Check panel S41 (COND CONTROL) and S39 (SET FERTILIZERS) to insure the settings are correct. Also you should check the 4 EC tanks and supply lines for proper level and function. Check the EC level of the incoming water to determine if a change has occurred that may not be correctable by the type and amount of fertilizers being used. If the problem persists after checking the process EC and fertilizer supplies, check panel S57 (SET PID PARAMETERS) to insure that the control algorithms are correct. [. . . ]