Microphone User Manual

• When the temperature is set manually,

"°C" symbol blinks. With the tempera-

ture probe connected, the "°C" symbol

is displayed continuously.

• Use the UP or DOWN arrow keys to

manually adjust the display reading

to the value of the reference ther-

mometer.

TAKING TEMPERATURE MEASUREMENTS (NOT FOR HI

8519)

• Taking a temperature measurement is very easy.

• Turn the instrument ON and press the RANGE key

(for HI8520 and HI8521 only) to get into tem-

perature mode.

• Make sure the temperature probe is connected

and allow the reading to stabilize (1 or 2 min-

utes).

• The temperature value will be dis-

played on the left LCD for HI8417.

TAKING ORP MEASUREMENTS

HI8417, HI8519 and HI8521 have the capability to take ORP

measurements, using an ORP electrode. Hanna Instruments offers a

variety of ORP electrodes for this purpose (see page 35). Contact your

Dealer for more information.

Just as pH measurements allow the acidity or the alkalinity of a

substance to be expressed in numbers, oxidation-reduction potential

(redox) measurements provide the quantification of the oxidizing or

reducing power of any liquid.

For HI8519 only:

• Connect the ORP electrode to the meter and

submerge the tip (4 cm / 1½") into the sample

to be tested.

Note: ORP measurements are taken without tem-

perature compensation.

• Press the mV key to enter the mV mode. Allow a few

minutes for the reading to stabilize.

• The display will indicate the absolute

mV value (positive or negative).

°C

RANGE

°C pH

4 cm

(1½

mVmV

ºC