User Guide

FUNCTIONAL DESCRIPTION HI 931000

ins rum n

CFM

°C

CAL

OFF

HI 931000

1) DIN socket for combination pH/°C electrode.

2) Liquid Crystal Display (LCD).

3) ON/OFF to switch the instrument on or off.

4) °C to display the measured temperature (press and hold).

5) CAL to enter calibration mode.

6) CFM to confirm calibration data.

Note: For field applications, it is always recommended to keep a

spare electrode handy. When anomalies are not resolved with

a simple maintenance, change the electrode (and recalibrate

the meter) to see if the problem is alleviated.

TAKING REDOX MEASUREMENTS

HI 8014, HI 8314, HI 8424, HI 8915 and HI 9622 have the capa-

bility to take ORP measurements. An optional ORP electrode must be

used to perform these measurements.

Oxidation-reduction potential (REDOX) measurements provide the

quantification of the oxidizing or reducing power of the sample tested.

To correctly perform a redox measurement, the surface of the ORP

electrode must be clean and smooth.

When not in use, the tip of the electrode should be kept moist and

safe from any mechanical stress which might cause damage to the

glass/platinum junction.