Hanna Instruments HI 8711 User Manual

Instruction Manual

HI 8510 • HI 8512 HI 8710 • HI 8711

HI 8720

Panel Mounted

pH and ORP

Indicators and

Controllers

www.hannainst.com

Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using these instruments. This manual will provide you with the necessary information for correct use of these instruments, as well as a precise idea of their versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com or view our worldwide contact list at www.hannainst.com.

WARRANTYWARRANTY

WARRANTY

WARRANTYWARRANTY

HI 8510, HI 8512, HI 8710, HI 8711 and HI 8720 are guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Electrodes and probes are guaranteed for six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the problem. If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Technical Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packed for complete protection.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

PRELIMINARY EXAMINATION .................................................................... 3

GENERAL DESCRIPTION ............................................................................ 3

MECHANICAL DIMENSIONS ...................................................................... 4

FUNCTIONAL DESCRIPTION HI 8510 ......................................................... 5

FUNCTIONAL DESCRIPTION HI 8512 ......................................................... 7

FUNCTIONAL DESCRIPTION HI 8710 ......................................................... 9

FUNCTIONAL DESCRIPTION HI 8711 ....................................................... 12

FUNCTIONAL DESCRIPTION HI 8720 ....................................................... 15

SPECIFICATIONS ................................................................................... 18

INITIAL PREPARATION ........................................................................... 21

OPERATIONAL GUIDE ............................................................................. 24

pH CALIBRATION ................................................................................... 28

pH VALUES AT VARIOUS TEMPERATURE .................................................. 30

pH DIAGNOSTIC TESTS ........................................................................... 31

ORP DIAGNOSTIC TESTS ......................................................................... 33

LED INDICATION .................................................................................... 34

TAKING REDOX MEASUREMENTS ............................................................ 35

ELECTRODE MAINTENANCE ..................................................................... 37

SUGGESTED INSTALLATIONS .................................................................. 40

ACCESSORIES ....................................................................................... 42

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any noticeable damage, immediately notify your dealer.

Each model is supplied with:

• Transparent Splash-proof Front Cover

• Mounting Brackets

• Instruction Manual

Note: Save all packing materials until you are sure that the instrument

functions correctly. All defective items must be returned in the original packing materials together with the supplied accessories.

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

HI 8510 and HI 8512 HI 8710, HI 8711 and HI 8720 pH and ORP controllers, are ideal for

process control monitoring in a wide range of industrial applications. These instruments have been designed for easy and fast installation,

and are provided with membrane keypads on the front panel, large display and autodiagnostic functions.

All connections are made through screw terminals on the rear panel. Each model accepts either a direct input from a pH or ORP electrode or

from a transmitter through 4-20mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes.

Moreover, you can choose the output configuration for connecting a recorder or a PLC, between 0-20 or 4-20 mA.

Note: In order to avoid damages and erroneous readings:

• do never connect more than one electrode type (BNC, amplified or input transmitter) to the instrument.

• do never use both the 0-20 mA and 4-20 mA recorder outputs at the same time.

Other features include over time control function, selection of the dosing direction (ACID, ALKALINE - HI 8710; OXID, REDUC - HI 8720) and the possibility to set dosing action mode (OFF/AUTO/ON).

pH and ORP panel-mounted indicators, and

MECHANICAL DIMENSIONSMECHANICAL DIMENSIONS

MECHANICAL DIMENSIONS

MECHANICAL DIMENSIONSMECHANICAL DIMENSIONS

The meters are provided with a black anodized aluminum body, front and back panels in shockproof ABS plastic and a transparent splash-proof front cover.

Front view of the panel-mounted unit

The dimensions show the cutout size for the installation.

Side view of the panel-mounted unit

Adjustable location brackets (supplied with the meter) allow the indicator to slide into the cutout and will hold the unit securely in place. 190 mm (7.50") is the minimum space required to install the indicator with complete wiring.

FUNCTIONAL DESCRIPTION HI 8510FUNCTIONAL DESCRIPTION HI 8510

FUNCTIONAL DESCRIPTION HI 8510

FUNCTIONAL DESCRIPTION HI 8510FUNCTIONAL DESCRIPTION HI 8510

FRONT PANEL

Keypad

SENSOR TEST To display the mV reading of the electrode and,

therefore, verify its working condition

pH 7 TEST To verify the internal circuit of the meter in

terms of Offset compensation

pH 4 TEST To verify the amplifier circuit of the meter

Note: Each time a key is pressed the corresponding LED is turned ON.

Trimmers

OFFSET For Offset calibration SLOPE For Slope calibration

REAR PANEL HI 8510

1. BNC socket for pH electrode

2. Input from amplified electrode

3. Connections for Pt100 temperature sensor

4. Power supply terminals

5. Fuse holder

6. Recorder output terminals

7. Connection to the transmiter

8. Power for amplified electrode

9. Connection for matching pin

10. Connection for reference electrode

Unplug the instrument from the power supply before replacing the fuse. Only one of BNC, AMP INPUT or INPUT TRANSMITTER connectors can be

used at a moment. Leave the other two inputs unconnected. Only one of the two terminals 4-10 mA and 0-20 mA can be used

at one moment. Leave the other unconnected.

FUNCTIONAL DESCRIPTION HI 8512FUNCTIONAL DESCRIPTION HI 8512

FUNCTIONAL DESCRIPTION HI 8512

FUNCTIONAL DESCRIPTION HI 8512FUNCTIONAL DESCRIPTION HI 8512

FRONT PANEL

Keypad

0 mV TEST To verify the instrument calibration at 0 mV 1000 mV TEST To verify the slope at 1000 mV

Note: Each time a key is pressed the corresponding LED is turned ON.

Trimmers

CAL For ORP calibration

REAR PANEL HI 8512

1. BNC socket for ORP electrode

2. Input from amplified electrode

3. Power supply terminals

4. Fuse holder

5. Recorder output terminals

6. Connection to the transmitter

7. Power for amplified electrode

8. Connection for matching pin

9. Connection for reference electrode

Unplug the instrument from the power supply before replacing the fuse. Only one of BNC, AMP INPUT or INPUT TRANSMITTER connectors can be

used at a moment. Leave the other two inputs unconnected. Only one of the two terminals 4-10 mA and 0-20 mA can be used

at one moment. Leave the other unconnected.

FUNCTIONAL DESCRIPTION HI 8710FUNCTIONAL DESCRIPTION HI 8710

FUNCTIONAL DESCRIPTION HI 8710

FUNCTIONAL DESCRIPTION HI 8710FUNCTIONAL DESCRIPTION HI 8710

FRONT PANEL

Keypad

SET To set the pH dosage limit MEASURE To enter measurement mode and to enable

diagnostic tests

SENSOR TEST To display electrode mV reading and verify its

working condition

ΔALARM To display & set alarm tolerance pH 7 TEST To verify Offset compensation pH 4 TEST To verify amplifier circuit

Note: Each time a key is pressed the corresponding LED is turned ON

or changes its blinking behavior (ΔALARM).

Trimmers

OFFSET For Offset calibration SLOPE For Slope calibration

ΔALARM To set the alarm tolerance

SET/COARSE To coarsely adjust the setpoint SET/FINE To finely adjust the setpoint

LEDs

ACID (blinking) Shows that acid dosage is active ALK. (blinking) Shows that alkaline dosage is active ΔALARM(blinking) Indicates an active alarm DOSAGE MODE SWITCH Blinks when the dosing switch is in OFF or ON

position.

SWITCH

OFF/AUTO/ON To set the dosing mode:

• OFF - dosing is disabled

• AUTO - automatic dosage, depending on

setpoint value and dosing selection

• ON - dosing always active

REAR PANEL HI 8710

1. BNC socket for pH electrode

2. Input from amplified electrode

3. Connections for Pt100 temperature sensor

4. Connections for dosing pump

5. Reduc/Oxid dosage consent terminals

6. Alarm contacts

7. Power supply terminals

8. Fuse holder

9. Acid/Alkaline dosage selection terminals

10. Recorder output contacts

11. Connection to the transmitter

12. Power for amplified electrode

13. Connection for matching pin

14. Connection for reference electrode

15. Disable overtime connection

16. Overtime set knob (about 5 to 60 min)

Unplug the instrument from the power supply before replacing the fuse. Only one of BNC, AMP INPUT or INPUT TRANSMITTER connectors can be

used at a moment. Leave the other two inputs unconnected. Only one of the two terminals 4-10 mA and 0-20 mA can be used

at one moment. Leave the other unconnected.

FUNCTIONAL DESCRIPTION HI 8711FUNCTIONAL DESCRIPTION HI 8711

FUNCTIONAL DESCRIPTION HI 8711

FUNCTIONAL DESCRIPTION HI 8711FUNCTIONAL DESCRIPTION HI 8711

FRONT PANEL

Keypad

ALK. SET To set the working point of basic dosage ACID SET To set the working point of acid dosage MEASURE To enter measurement mode and to

enable diagnostic tests

SENSOR TEST To display electrode mV reading and,

therefore, verify its working condition

ΔALARM To display and set the alarm tolerance pH 7 TEST To verify Offset compensation pH 4 TEST To verify amplifier circuit

Note: Each time a key is pressed the corresponding LED is turned ON

or changes its blinking behavior (ALK.SET, ACID SET,

ΔALARM).

Trimmers

SLOPE For Slope calibration OFFSET For Offset calibration ΔALARM To set the tolerance of the alarm ALK. SET

COARSE To coarsely adjust alkaline setpoint FINE To finely adjust alkaline setpoint

ACID SET

COARSE To coarsely adjust acid setpoint FINE To finely adjust acid setpoint

LEDs

ALK. SET (Blinking) Show that basic dosage is active ACID SET (Blinking) Show that acid dosage is active ΔALARM (Blinking) Indicate active alarm ALK. DOSAGE MODE SWITCH Shows that the alkaline dosage switch

(Blinking) is in OFF or ON position

ACID DOSAGE MODE SWITCH Shows that the acid dosage switch is in

(Blinking) OFF or ON position

Switches

ALK. OFF/AUTO/ON

To set the dosing mode:

• OFF - dosing is disabled

• AUTO - automatic dosage, depending on alkaline setpoint

value

• ON - dosing always active

ACID OFF/AUTO/ON

To set the dosing mode (see above) for acid setpoint value

REAR PANEL HI 8711

1. BNC socket for pH electrode

2. Input from amplified electrode

3. Connections for Pt100 temperature sensor

4. Connections for dosing pump for acid

5. Connections for dosing pump for base

6. Alarm contacts

7. Power supply terminals

8. Fuse holder

9. Recorder output contacts

10. Connections to the transmitter

11. Power for amplified electrode

12. Connection for matching pin

13. Connection for reference electrode

14. Disable overtime connection

15. Overtime set knob (about 5 to 60 min)

Unplug the instrument from the power supply before replacing the fuse. Only one of BNC, AMP INPUT or INPUT TRANSMITTER connectors can be

used at a moment. Leave the other two inputs unconnected. Only one of the two terminals 4-10 mA and 0-20 mA can be used

at one moment. Leave the other unconnected.

FUNCTIONAL DESCRIPTION HI 8720FUNCTIONAL DESCRIPTION HI 8720

FUNCTIONAL DESCRIPTION HI 8720

FUNCTIONAL DESCRIPTION HI 8720FUNCTIONAL DESCRIPTION HI 8720

FRONT PANEL

Keypad

SET To set the working point of ORP dosage MEASURE To enter measurement mode and to enable

diagnostic tests

ΔALARM To display and set the alarm tolerance 0 mV TEST To verify the instrument calibration at 0 mV 1000 mV TEST To verify the slope at 1000mV

Note: Each time a key is pressed the corresponding LED is turned ON

or changes its blinking behavior (ΔALARM).

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