4
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and exam-
ine it carefully to make sure that no damage has occurred
during shipping. If there is any noticeable damage, please
contact your local Hanna Instruments Office.
Note
Save all packing materials until you are sure that the instru-
ment functions correctly. Any damaged or defective items
must be returned in their original packing materials together
with the supplied accessories.
GENERAL DESCRIPTION
The product is a real time microprocessor-based pH/ORP
controller. It provides accurate measurements, flexible
ON/OFF or proportional control capabilities and dual
alarm signals.
The system is composed of a case inside which the signal
conversion circuitry, the microprocessor circuitry and the
output power drivers are contained.
MAIN FEATURES OF DIFFERENT MODELS
• Display: large LCD with 4½ 17 mm digits and 3 ½ 10 mm
digits.
• LEDs: three (mV600) or four (pH500) LEDs are provided
for signaling the energizing of relay 1 (a yellow led), relay
2 (a yellow led in pH500 Series only) and alarm relays (a
green and a red LED).
• Relays: 1 or 2 output relays for acid or base dosage
(COM, NO and NC contacts) and 1 output relay for
alarm condition (COM, NO and NC contacts).
• RS232 isolated communication link (optional).
• Calibration and Setup procedures allowed only through
an unlock password.
• Calibration: for pH500 Series in 1, 2 or 3 points with
buffers 4.01, 7.01 and 10.01 pH (25 °C); for mV600
Series in 1 or 2 points at 0, 350 and 1900 mV.
• Temperature compensation of the Hanna Instruments
standard buffers (for pH500 Series only).
