User Guide
Operating Manual alpha DO 1000
7.6.1 Entering the Controller sub-function.....................................................................22
7.6.2 Choosing the controller type (limit or proportional).............................................22
7.6.3 Choosing Break/Make Contact Relay Type ...........................................................23
7.6.4 Selecting Proportional Range Value, Xp ...............................................................23
7.6.5 Maximum Pulse Length (tPL) or Maximum Frequency (FPF) .............................24
7.7 Current Output (rng) sub-function ..................................................................................25
7.7.1 Entering Current Output sub-function...................................................................25
7.7.2 Choosing the Output Type......................................................................................25
7.7.3 Selecting Dissolved Oxygen Value at 0(4)mA........................................................25
7.7.4 Selecting Dissolved Oxygen value at 20mA...........................................................26
7.8 Configuration (ConF) sub-function..................................................................................26
7.8.1 Entering the Configuration sub-function ...............................................................26
7.8.2 Selecting the Units Of Measure (mg/l, ppm or %).................................................27
7.8.3 Selecting the Alarm Time Lag ................................................................................27
7.8.4 Selecting Steady or Pulse Contact for the Alarm Relay ........................................27
7.8.5 Selecting Dissolved Oxygen Probe Type................................................................28
7.8.6 Reverting to Factory Default Settings....................................................................28
7.9 Calibration (CAL) sub-function........................................................................................29
7.9.1 Entering Calibration mode from Advanced Set-up mode......................................29
8 AUTO/MANUAL MODE ........................................................................ 30
8.1 Auto Mode (Mode After Switch-On)................................................................................30
8.2 Manual Mode ......................................................................................................................30
9 TECHNICAL SPECIFICATIONS ........................................................... 32
10 ACCESSORIES..................................................................................... 33
10.1 Assembly Accessories .........................................................................................................33
11 GENERAL INFORMATION ................................................................... 34
11.1 Warranty .............................................................................................................................34
11.2 Packaging.............................................................................................................................34
11.3 Return of Goods..................................................................................................................34
11.4 Guidelines for Returning Unit for Repair .......................................................................34
12 APPENDICES........................................................................................ 35
12.1 Appendix 1 – Jumper Positions for 110 or 230 volts ......................................................35
12.2 Appendix 2 – Salinity vs Temperature (@ 760 mmHg) .................................................36
12.3 Appendix 3 - Explanation on the Function of Hysteresis...............................................37
12.4 Appendix 4 – Limit and Proportional Control Functions..............................................38