EUTECH INSTRUMENTS alpha-pH 2000D Manuel d'instructions télécharger pdf (Page 19)

Instruction Manual αlpha-pH2000D

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5 CALIBRATION MODE

You can access the Calibration mode directly from the Measurement mode by pressing the

CAL key and entering the Calibration security code “11”. Calibration mode may also be

accessed via the Setup mode (see section 6.1).

5.1 Entering Calibration mode

ENTERENTER

MEAS

CAL

SETUP

HOLD

SETUP

HOLD

pH calibration

ORP-mV calibration

ORP-% calibration

see section 5.2

see section 5.3

see section 5.4

1. While in Measurement mode press the CAL key (direct access) or ENT key (access via Setup

mode).

2. If CAL key was pressed: The display prompts you to enter the calibration security code. Press

the ▲ or ▼ key to set the calibration security code to “11”, and then press the ENT key to

confirm the calibration security code.

3. If ENT key was pressed: The display prompts you to enter the security code. Press the ▲ or

▼ key to set the security code to “22”. Press the ENT key to confirm the security code, and

then press the ▲ or ▼ key to select the calibration sub-function.

If configured for pH control, the display shows “CAL PH”. If configured for ORP control, the

display shows “CAL ORP”. To start calibration, refer to the corresponding section (see

illustration above).

Note: to exit Calibration mode at any time press the ▲ and ▼ keys

simultaneously (escape). The transmitter returns to the Measurement mode and

the old calibration values remain active. The calibration security code automatically

resets from “11” to “000” after the transmitter returns to Measurement mode.

Note: The calibration is always carried out in the units (pH or mV or %) selected in

setup mode. The pH controller/transmitter allows a 1-point or 2-point calibration.

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EUTECH INSTRUMENTS alpha-pH 2000D Manuel d'instructions Page 19