Owner manual

3 cm

(1¼")

ORP MEASUREMENTSORP MEASUREMENTS

ORP MEASUREMENTS

An optional ORP electrode must be used to perform ORP measurements

(see Accessories).

Oxidation-Reduction Potential (REDOX) measurements provide the

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

The surface of the ORP electrode must be clean and smooth in order to

obtain an accurate measurement.

Pretreatment solutions are available to condition the electrode and speed

up the response time.

• The instrument automatically defaults to the

mV measurement mode if HANNA P type ORP

electrode is detected.

• Submerse the ORP electrode tip (3 cm/1¼”)

into the sample. Allow a few minutes for the

reading to stabilize.

• The instrument displays the mV reading on the primary LCD.

• If the reading is out of range, the closest full-scale value will be

displayed blinking on the primary LCD.

TAKING TEMPERATURE MEASUREMENTSTAKING TEMPERATURE MEASUREMENTS

TAKING TEMPERATURE MEASUREMENTS

Connect the HI 7662

temperature probe and turn the

instrument on. Dip the temperature

probe

into the sample

and allow the reading on the secondary LCD to stabilize.