Specifications

Instruction Manual Alpha DO 500

4. Calibration Mode

4.1 Entering Calibration Mode

While in measurement mode, press CAL key to access calibration mode.

LCD indicates ‘CAL dO’.

Calibration in or

Calibration in saturation

mg/l ppm

Calibration Mode

- See Section 4.3

- See Section 4.4

CAL

HOLD

CAL

To quit Calibration Mode

ENT

MEAS

°C

ATC

READY

NOTES:

x To exit calibration mode at any time during calibration, press  and 

keys simultaneously (escape). The DO Transmitter returns to the

measurement mode and the old calibration values remain active.

x The calibration is always carried out in the units of measurement (mg/l

or ppm or %) selected in setup mode.