5
4
• Temperature compensation of the pH reading (for pH 500
Series only).
• Manual temperature setting when the temperature probe is
not inserted or temperature exceeds the upper range.
• Last calibration data internally recorded (non-volatile EE-
PROM memory): calibration date and time, pH offset, pH
slopes, number of calibration points and correspondent
pH values (for pH 500 Series only) or calibration date and
time and the mV calibration points used (for mV 600 Series
only).
• Input: pH electrode with BNC connector.
• Output:
- isolated 0-1 mA, 10 K maximum load (optional);
- isolated 0-20 mA, 750 maximum load (optional);
- isolated 4-20 mA, 750 maximum load (optional);
- isolated 0-5 Vdc, 1 K minimum load (optional);
- isolated 1-5 Vdc, 1 K minimum load (optional);
- isolated 0-10 Vdc, 1 K minimum load (optional).
• Real time clock.
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, notify
your Dealer or the nearest Hanna Customer Service Center
immediately.
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 (mV 600) or four (pH 500) LEDs are provided
for signaling the energizing of relay 1 (a yellow led), relay
2 (a yellow led in pH 500 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 condi-
tion (COM, NO and NC contacts).
• RS232 isolated communication link (optional).
• Calibration and Setup procedures allowed only through
an unlock password.
• Calibration: for pH 500 Series in 1, 2 or 3 points with
buffers 4.01, 7.01 and 10.01 pH (25 °C); for mV 600
Series in 1 or 2 points at 0, 350 and 1900 mV.
• Temperature compensation of the HANNA standard buff-
ers (for pH 500 Series only).
