Aqua Medic pH-Computer Bedienungsanleitung Seite 9

3. Description of the front plate
1. LED–digital display
2. Prog./Enter-button
3. High/Low-button
4. LED for High/Low status display
5. SET-button
6. + and – button
7. BNC-connection for electrode
8. Hys-button for adjusting the hysteresis
9. Calibration buttons
4. Installation
1. Connect the pH-electrode.
2. Connect to 230 V power source.
The unit is now ready for programming.
5. Adjustment of the control direction
The status of the control direction is shown at the LED's at the side:
High: An adjusted maximum set point is controlled by adding some reducing agent. The control
direction is downwards. This is the standard mode for controlling the pH in fresh water or
salt water aquaria by adding CO
Low: An adjusted minimum set point is controlled by adding some oxydizing agent (e. g. ozone).
The control direction is upwards.
.
2
9