Functional Description Hi 8720 - Hanna Instruments HI 8510 Instruction Manual

FUNCTIONAL DESCRIPTION HI 8720

FRONT PANEL
ORP
mV
DOSAGE
OXID. REDUC.
MEA
SURE
500 mV
0 mV
TEST TEST
Keypad
SET To set the working point of ORP
dosage
MEASURE To enter measurement mode and
to enable diagnostic tests
Δ Δ Δ Δ Δ 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
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HI 8720E
SLOPE
ΔAL
SET
COARSE
SET
ΔAL
FINE
Trimmers
SLOPE
Δ Δ Δ Δ Δ AL
SET/COARSE
SET/FINE
LEDs
OXID
REDUC
Δ Δ Δ Δ Δ AL (blinking)
20£
For Slope calibration
To display and set the alarm
tolerance
To coarsely adjust the
setpoint
To finely adjust the setpoint
Show that the oxidant dosage is
active
Show that the reductant dosage
is active
Indicate an active alarm
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