Hanna Instruments pH 500 Series User manual

pH500 & mV600 Series
Panel-mounted,
Microprocessor-based
pH and ORP Controllers
Instruction Manual

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All rights are reserved. Reproduction in whole or in part is prohibited without the
written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode
Island, 02895, USA.
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
This instruction manual refers to the following products:
pH500111-αpH controller with single setpoint, ON/OFF
control, analog output
pH500112-αpH controller with single setpoint, ON/OFF
control, RS232 output
pH500121-αpH controller with single setpoint, propor-
tional and ON/OFF controls, analog output
pH500122-αpH controller with single setpoint, propor-
tional and ON/OFF controls, RS232 output
pH500211-αpH controller with dual setpoint, ON/OFF
control, analog output
pH500212-αpH controller with dual setpoint, ON/OFF
control, RS232 output
pH500221-αpH controller with dual setpoint, proportional
and ON/OFF controls, analog output
pH500222-αpH controller with dual setpoint, proportional
and ON/OFF controls, RS232 output
mV600111-αORP controller with single setpoint, ON/OFF
control, analog output
mV600112-αORP controller with single setpoint, ON/OFF
control, RS232 output
mV600121-αORP controller with single setpoint, propor-
tional and ON/OFF controls, analog output
mV600122-αORP controller with single setpoint, propor-
tional and ON/OFF controls, RS232 output
α = 1 means 115 Vac, 50/60 Hz power supply
α = 2 means 230 Vac, 50/60 Hz power supply
Please read this instruction manual carefully before using the
controller. For more information about Hanna Instruments
and our products, visit www.hannainst.com or e-mail us
at [email protected].
For technical support, contact your local Hanna Instruments
Office or e-mail us at [email protected].

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TABLE OF CONTENTS
PRELIMINARY EXAMINATION ..................4
GENERAL DESCRIPTION......................4
FUNCTIONAL DESCRIPTION ..................6
MECHANICAL DIMENSIONS. . . . . . . . . . . . . . . . . . . 7
SPECIFICATIONS pH500 & mV600 ..............8
INSTALLATION .............................9
SETUP MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CONTROL MODE .........................17
IDLE MODE ..............................22
ANALOG OUTPUT .........................23
RS232 COMMUNICATION AND DATA LOGGING..25
CALIBRATION ............................27
LAST CALIBRATION DATA ....................39
STARTUP ................................42
FAULT CONDITIONS AND SELFTEST PROCEDURES . 43
pH VALUES AT VARIOUS TEMPERATURES .........47
ELECTRODE CONDITIONING AND MAINTENANCE 48
TAKING REDOX MEASUREMENTS ..............52
ACCESSORIES ............................54
WARRANTY ..............................60
CE DECLARATION OF CONFORMITY...........62

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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).

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• Temperature compensation of the pH reading (for pH500
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 pH500 Series only) or calibration date
and time and the mV calibration points used (for mV600
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.

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FUNCTIONAL DESCRIPTION
FRONT PANEL
1. Liquid Crystal Display
2. LCD key exits from setup and calibration modes and reverts back
to normal mode (in idle or control phases with the mea-
surement on the display). In pH500 series, during pH
calibration, alternately displays pH buffer value or current
temperature
3. SETUP key enters setup mode
4. CAL DATA key last calibration data viewing (enters and exits)
5. CAL key initiates and exits calibration mode
6. key increases the blinking digit/letter by one when selecting a
parameter. Advances forward while in last calibration data
viewing mode. Increases the temperature setting when
temperature probe is not inserted
7. key decreases the blinking digit/letter by one when selecting a
parameter. Reverts backward while in last calibration data
viewing mode. Decreases the temperature setting when
temperature probe is not inserted
8. key moves to the next digit/letter (circular buffer) when selecting
a parameter. Same as key during last calibration data
viewing mode
9. CFM key confirms current choice (and skips to the next item)
10. LEDs

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MECHANICAL DIMENSIONS
FRONT VIEW SIDE VIEW
REAR PANEL
1. RS232 Connection Port (pH500XY2 and mV600XY2 models only)
2. Analog Output (pH500XY1 and mV600XY1 models only)
3. Power Supply Input
4. Alarm Terminal
5. Relay 2 - Second Dosing Terminal (pH5002XY models only)
6. Relay 1 - First Dosing Terminal
7. Connections for Pt 100 Temperature Sensor
8. Connection for Electrode Reference
9. Connection for Potential Matching Pin
10. BNC Socket for pH or ORP Electrode
11. ±5V Power Supply Output
Unplug the meter before starting any electrical connections.

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SPECIFICATIONS pH500 & mV600
Range
0.00 -14.00 pH (pH500 series only)
±2000 mV (mV600 series only)
-9.9 to 120.0 °C
Resolution 0.01 pH (pH500 series)/ ±1 mV (mV600 series)
0.1 °C
Accuracy
(@20 °C/68 °F)
±0.02 pH (pH500 series)/ ±2 mV (mV600 series)
±0.5 °C
Typical EMC
Deviation
±0.2 pH (pH500 series)/ ±10 mV (mV600 series)
±0.5 °C
Calibration pH: automatic, 1. 2 or 3 point, at pH4.01, 7.01, 10.01
ORP: automatic, 2 point, at 0 and 350 or 1900 mV
Temperature
Compensation
(pH500 series only)
automatic (with Pt100 probe) or manual, -9.9 to 120 °C
Outputs
digital:RS232 bi-directional, optoisolated; or analog,
galvanically isolated: 0-1 mA, 0-20 mA and 4-20 mA, 0-5
VdC and 0-10 Vdc
Setpoint Relay 1 or 2 contact outputs SPDT, 5A-250 Vac, 5A-30 Vdc (re-
sistive load). Fuse protected: 5A, 250V FUSE
Alarm Relay 1 conatct output SPDT, 5A-250 Vac, 5A-30 Vdc (resistive
load). Fuse protected: 5A, 250V FUSE
Installation Category II
Power Supply 230 ±10% VAC or 115 ±10% VAC, 50/60 Hz
Power Consumption 15VA
Over Current
Protection 400 mA 250V fast fuse
Max. Oscillation
Frequency 4 MHz
Environment 0 to 50 °C (32 to 122 °F), RH max 95%
Enclosure single case 1/2 DIN
Dimensions panel cutout: 140 x 140 mm
instrument: 144 x 144 x 170 mm
Weight approximately 1.6 kg. (3.5 lb.)

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INSTALLATION
pH500 and mV600
offer a multitude of
possibilities, from
single and dual set-
points to ON/OFF or
propotional dosage,
isolated outputs with
user-selectable zoom,
bi-directional RS232,
recorder outputs in
mAmps and Volts.
In addition, pH500
and mV600 are both
equipped with the
exclusive differential
input.
In a system with poor
grounding, it is possi-
ble to have a ground
current flowing through
the reference junction.
This can cause a rap-
id degradation of the
electrode.
The Hanna Instruments
differential input re-
duces the likelihood of
ground loops.
See the diagram for a
recommended instal-
lation.

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• Power Supply: Connect a 3-wire power
cable to the terminal strip, while paying
attention to the correct line (L), earth (PE)
and neutral (N) terminal connections.
Power: 115VAC - 100 mA / 230VAC - 50 mA
Line Contact: fused inside 400 mA.
PE must be connected to ground; leakage current 1mA.
• Electrode: Connect the pH or ORP electrode to the BNC
socket (#10 at page 7).
To benefit from the differential input, connect the proper
electrode wire (if available) or a cable with a potential
matching pin (grounding bar) to the relevant terminal (#9
at page 7).
Note When it is not possible to immerse the Potential Matching
Pin together with the pH electrode in the solution, disable
the differential input by connecting the Connection for Po-
tential Matching Pin (#9 at page 7) with the Connection for
Electrode Reference (#8 at
page 7) with a jumper wire.
• Pt 100 Terminals: these contacts (#7 at page 7) connect
the Pt 100 temperature sensor for automatic temperature
compensation of pH measurement. In the case of shielded
wire, connect the shield to pin 4.
In the case of a 2-wire sensor
connect the Pt 100 to pins 1 and
3, and short pins 2 and 3 with a
jumper wire.
If the Pt 100 has more than 2
wires, connect the two wires of
one end to pins 2 and 3 (pin 2 is
an auxiliary input to compensate
for the cable resistance) and one
wire from the other end to pin
1. Leave the fourth wire unconnected, if present.
• Power Supply Output: these terminals
provide +5 Vdc and -5 Vdc signals to
supply power to amplified electrodes.
Note All cables connected to rear panel should
end with cable lugs.