User Guide

meter to measure the pH accurately, temperature must be taken in

consideration. If the sample temperature is quite different from the

temperature at which the pH electrode was kept, allow a few minutes

for a perfect thermal equilibrium between them.

To use the meter's Automatic Temperature Compensation feature,

submerge the temperature probe into the sample as close to the

electrode as possible and wait for a couple of minutes. If you know the

temperature of the sample to be tested you can manually compensate

for it.

If manual temperature compensation is desired the temperature

probe must be disconnected from the instrument.

The display will show the default temperature

of 25°C or the last recorded temperature read-

ing with the "°C" indicator blinking.

The temperature can now be adjusted with the

UP and DOWN keys.

TEMPERATURE MEASUREMENTS:

Taking a temperature measurement is very easy.

Turn the instrument ON.

Dip the liquid/general purpose temperature probe

HI 7669/2W into the sample. Then allow a

couple of minutes for the reading to stabilize.

°C

ON/OFF

°C