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Hanna Instruments HI 8510 User Manual

Page 11

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21

20£

20

Trimmers

SLOPE

For Slope calibration

ΔΔΔΔΔ

AL

To display and set the alarm
tolerance

SET/COARSE

To coarsely adjust the

setpoint

SET/FINE

To finely adjust the setpoint

LEDs

OXID

Show that the oxidant dosage is
active

REDUC

Show that the reductant dosage
is active

ΔΔΔΔΔ

AL (blinking)

Indicate an active alarm

FUNCTIONAL DESCRIPTION HI 8720

Keypad

SET

To set the working point of ORP
dosage

MEASURE

To enter measurement mode and
to enable diagnostic tests

ΔΔΔΔΔ

Al

To display and set the alarm
tolerance

0 mV TEST

To verify the instrument

calibration at 0 mV

500 mV TEST

To verify the slope at

500 mV

FRONT PANEL

SLOPE

DOSAGE

OXID.

REDUC.

Δ

AL

COARSE

SET

FINE

Δ

AL

MEA

SURE

SET

0 mV

TEST

500 mV

TEST

mV

HI 8720E

ORP