Xylem MULTI 3400 MULTI-PARAMETER METERS Manual de usuario descargar pdf (Pagina 16)

Operation Multi 3400i

4.2 pH value / ORP voltage

4.2.1 General information

Preparatory activities Perform the following preparatory activities when you want to measure:

Note

Incorrect calibration of pH electrodes leads to incorrect measured val-

ues. Calibrate regularly before measuring. You can only connect elec-

trodes of the NTC30 type or without temperature sensor.

Warning

When connecting an earthed PC/printer, measurements cannot be per-

formed in earthed media as incorrect values would result. The RS232

interface is not galvanically isolated.

1 Connect the pH electrode to the measuring instrument.

If necessary, press the <M> key repeatedly until the status dis-

play pH (pH measurement) or U (measurement of the ORP

voltage) appears.

2 Adjust the temperature of the buffer solutions or test solutions,

or measure the current temperature, if you measure without a

temperature sensor.

3 Calibrate or check the measuring instrument with the elec-

trode.

4Using <▲ > <▼>, toggle between the pH or mV measuring

modes.

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Xylem MULTI 3400 MULTI-PARAMETER METERS Manual de usuario Pagina 16