User Guide

Operating Manual alpha DO 1000

HOLD

SETUP

25.0

P. c

7.4.3 Setting Manual Temperature Compensation

Note: This parameter is blanked out when the controller is set for

ATC operation.

For manual temperature compensation, you can set two different temperatures:

process and calibration. This allows calibration at a temperature other than your

process temperature. Example: setting a calibration temperature of 25 °C lets you

calibrate using standard buffer solutions at 25 °C, even if your process temperature

is a different temperature.

1. Select “ATC oFF” as described above in section 7.4.1

2. Press the ENTER key. The upper display shows the

current process temperature and the lower display

shows “P.°C” to indicate process temperature.

3. Press the ▲ or ▼ keys to adjust the process

temperature value. You can adjust the value from –

9.9 to 125 °C.

4. After you set the process temperature value, press

the ENTER key. The upper display shows the current

calibration temperature and the lower display shows

“C.°C” to indicate calibration temperature.

5. Press the ▲ or ▼ keys to adjust the calibration

temperature value. You can adjust this value from –

9.9 to 125 °C.

6. Press the ENTER key to confirm your selection.

7. Continue with additional Advanced Set-up procedures,

or return to Measurement mode by pressing the ▲ or ▼ keys (escape)

simultaneously.

7.5 Control Relay A/Control Relay B (SP1/SP2) sub-function

The SP1 option sets the operating parameters for Relay A; and SP2 for relay B.

Since these groups have the same set-up parameters, they are described together.

Sp1 Sp1 Hys O . OF.

mg/l mg/l

HOLD HOLD HOLD HOLD HOLD HOLDSETUP SETUP SETUP SETUP SETUP SETUP

Sp1 6.20 L 0.20 0 0