Se ff, A25.0 – Thermo Fisher Scientific Alpha DO 1000 User Manual

Page 25

HOLD

SETUP

6. Press the ENTER key to accept the correct pressure values. The controller

automatically compensates the final Dissolved Oxygen measurement.

7. Proceed with additional Advanced Set-up procedures (press ENTER again)

or return to Measurement mode by pressing the

▲ or ▼ keys (escape)

simultaneously.

7.4

Setting Temperature (Set °C) sub-function

7.4.1

Selecting Automatic or Manual Temperature
Compensation

1. Enter Advanced Set-up mode. Push the ENTER key

and scroll to Advanced Set-up security code “22”.
Push the ENTER key again.

2. Press

the

▲ or ▼ keys to scroll until the upper

display shows “Set °C”.

3. Press the ENTER key. The lower display shows “Atc”;

the upper display shows “on” (Section 7.4.1.1) or
“oFF” (Section 7.4.1.2) depending on whether or not
ATC is selected.

4. Press

the

▲ or ▼ keys to toggle between ATC on

and off.

5. Proceed with additional Advanced Set-up procedures

(press ENTER again) or return to Measurement
mode by pressing the

▲ or ▼ keys (escape)

simultaneously.

7.4.2

Temperature calibration (ATC mode only)

1. Select “ATC on” as described above in Section 7.4.1.

2. Press the ENTER key. The upper display indicates

the current temperature offset. The current measured
temperature is shown in the lower display.

3. Compare the current measured temperature on the

controller display to a thermometer known to be
accurate. Note down the correct temperature value.

4. Press

the

▲ or ▼ keys to scroll the lower display to

match the correct value. The upper display will now
show the offset value. You can offset the temperature
values to ± 5 °C.

5. Press the ENTER key to confirm your selection.

6. Continue with additional Advanced Set-up procedures, or return to the

Measurement mode by pressing the

▲ or ▼ keys (escape) simultaneously.

HOLD

SETUP

0.0

25.0

ATC

° C