Hanna Instruments HI 8512, HI 8710, HI 8711, HI 8720 Instruction Manual

1

0£

Instruction Manual

HI 8510 • HI 8512

HI 8710 • HI 8711

HI 8720

Panel Mounted

pH and ORP

Indicators and Controllers

SLOPE

DOSAGE

OXID.

REDUC.

ΔAL

COARSE

SET

FINE

ΔAL

MEA

SURE

SET

0 mV

TEST

500 mV

TEST

HI 8720E

ORP

mV

www.hannainst.com

3

2£

2

PRELIMINARY 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 complete with
transparent splash-proof front cover, mounting
brackets and 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 DESCRIPTION

HI 8510 and HI8512 pH and ORP panel-

mounted indicators, and 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.

Two versions are available for each model, to
accept either a direct input from a pH or ORP
electrode (E version) or from a transmitter
through 4-20mA input (T version).

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

Dear Customer,
Thank you for choosing a HANNA instruments

®

product.
Please read this instruction manual carefully
before using the instrument.

If you need additional technical information,
do not hesitate to e-mail us at
[e-mail].
These instruments are in compliance with the

directives.

Preliminary Examination ............................. 3

General Description..................................... 3

Available Models ......................................... 4

Mechanical Dimensions .............................. 6

Functional Description HI 8510.................... 7

Functional Description HI 8512.................. 10

Functional Description HI 8710.................. 13

Functional Description HI 8711.................. 16

Functional Description HI 8720.................. 20

Specifications............................................ 24

Initial Preparation ...................................... 27

Operational Guide ..................................... 30

pH Calibration ........................................... 34

pH Values at Various T emperature............. 36

pH Diagnostic Tests.................................. 37

ORP Diagnostic Tests............................... 39

LED Indication........................................... 40

T aking Redox Measurements .................... 41

Electrode Maintenance.............................. 43

Suggested Installations ............................. 47

Accessories.............................................. 49

Warranty ................................................... 55

TABLE OF CONTENTS

5

4£

4

AVAILABLE MODELS

HI 8510E020 pH indicator with electrode

input and 0-20 mA recorder
output

HI 8510E420 pH indicator with electrode

input and 4-20 mA recorder
output

HI 8510T020 pH indicator with input from

transmitter and 0-20 mA
recorder output

HI 8510T420 pH indicator with input from

transmitter and 4-20 mA
recorder output

HI 8512E020 ORP indicator with electrode

input and 0-20 mA recorder
output

HI 8512E420 ORP indicator with electrode

input and 4-20 mA recorder
output

HI 8512T020 ORP indicator with input from

transmitter and 0-20 mA
recorder output

HI 8512T420 ORP indicator with input from

transmitter and 4-20 mA
recorder output

HI 8710E020 pH controller with electrode

input and 0-20 mA recorder
output

HI 8710E420 pH controller with electrode

input and 4-20 mA recorder
output

HI 8710T020 pH controller with input from

transmitter and 0-20 mA
recorder output

HI 8710T420 pH controller with input from

transmitter and 4-20 mA
recorder output

HI 8711E020 pH controller with 2 setpoints,

electrode input and 0-20 mA
recorder output

HI 8711E420 pH controller with 2 setpoints,

electrode input and 4-20 mA
recorder output

HI 8711T020 pH controller with 2 setpoints,

input from transmitter and 0­20 mA recorder output

HI 8711T420 pH controller with 2 setpoints,

input from transmitter and 4­20 mA recorder output

HI 8720E020 ORP controller with electrode

input and 0-20 mA recorder
output

HI 8720E420 ORP controller with electrode

input and 4-20 mA recorder
output

HI 8720T020 ORP controller with input from

transmitter and 0-20 mA
recorder output

HI 8720T420 ORP controller with input from

transmitter and 4-20 mA
recorder output

7

6£

6

FUNCTIONAL DESCRIPTION HI 8510

FRONT PANEL

SLOPE

Δ

SENSOR

TEST

pH 7

TEST

pH 4

TEST

pH

HI 8510E

pH

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

Trimmers

ΔΔ

ΔΔ

ΔO For Offset calibration

SLOPE For Slope calibration

MECHANICAL 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.

190mm MIN

7.50"

135mm

5.31"

0.25/4mm

0.01/0.160"

1

44mm

5.67"

ADJUSTABLE
LOCATION
BRACKET

141mm

5.55"

144m

m

5.67

"

69mm

2.71"

72mm

2.83"

9

8£

8

1. Fuse holder

2. Power supply terminals

3. Recorder output terminals

4. Connections to the transmitter

REAR PANEL HI 8510T

1. Fuse holder

2. Power supply terminals

3. Recorder output terminals

4. Connections for Pt100 temperature sensor

5. BNC socket for pH electrode

FUSE

FUSE

ELECTRODE
INPUT

PT100

mA OUT

+

-

220

110

L

1

2

3

4

5

REAR PANEL HI 8510E

Unplug the instrument from the power
supply before replacing the fuse.

Unplug the instrument from the power
supply before replacing the fuse.

11

10£

10

1. Fuse holder

2. Power supply terminals

3. Recorder output terminals

4. BNC socket for ORP electrode

REAR PANEL HI 8512E

FUSE

FUSE

ELECTRODE
INPUT

220

110

L

1

2

3

4

mA OUT

+

-

FUNCTIONAL DESCRIPTION HI 8512

Keypad

0 mV TEST To verify the instrument cali-

bration at 0 mV

500 mV TEST To verify the slope at 500 mV

Trimmers

SLOPE For slope calibration

FRONT PANEL

SLOPE

0 mV

TEST

500 mV

TEST

mV

HI 8512E

ORP

Unplug the instrument from the power
supply before replacing the fuse.

13

12£

12

FUNCTIONAL DESCRIPTION HI 8710

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

ΔΔ

ΔΔ

ΔAL To display & set alarm tolerance

pH 7 TEST To verify Offset compensation
pH 4 TEST To verify amplifier circuit

Trimmers

ΔΔ

ΔΔ

ΔO For Offset calibration

SLOPE For Slope calibration

ΔΔ

ΔΔ

ΔAL To set the alarm tolerance

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

LEDs

ACID Show that acid dosage is active
BASE Show that basic dosage is active

ΔΔ

ΔΔ

ΔAL (blinking) Indicate an active alarm

FRONT PANEL

SLOPE

ACID

BASE

ΔAL

0

Δ

COARSE

SET

FINE

SENSOR

TEST

MEA

SURE

ΔAL

SET

pH 7

TEST

pH 4

TEST

pH

HI 8710E

pH

1. Fuse holder

2. Power supply terminals

3. Recorder output terminals

4. Connections to the transmitter

REAR PANEL HI 8512T

Unplug the instrument from the power
supply before replacing the fuse.

15

14£

14

1. Fuse holder

2. Power supply terminals

3. Acid/Basic dosage selection terminals

4. Red/ox dosage consent terminals

5. Connections for dosing pump

6. Alarm contacts

7. Recorder output contacts

8. Connections to the transmitter

REAR PANEL HI 8710T

1. Fuse holder

2. Power supply terminals

3. Acid/Basic dosage selection terminals

4. Red/ox dosage consent terminals

5. Connections for dosing pump

6. Alarm contacts

7. Recorder output contacts

8. Connections for Pt100 temperature sensor

9. BNC socket for pH electrode

REAR PANEL HI 8710E

FUSE

FUSE

ELECTRODE
INPUT

PT100

mA OUT

OPEN: ACID
SHORT: BASE

+

-

SET

CONSENT

ALARM

220

110

L

1

2

3

7

8

9

4

6

5

Unplug the instrument from the power
supply before replacing the fuse.

Unplug the instrument from the power
supply before replacing the fuse.

17

16£

16

ΔΔ

ΔΔ

ΔAl To display and set the

alarm tolerance

pH 7 TEST To verify Offset compen-

sation

pH 4 TEST To verify amplifier circuit

Trimmers

ΔΔ

ΔΔ

ΔO For Offset calibration

SLOPE For Slope calibration

ΔΔ

ΔΔ

ΔAL To set the tolerance of the

alarm

ACID SET/COARSE To coarsely adjust

acid setpoint

ACID SET/FINE To finely adjust acid

setpoint

BASE SET/COARSE To coarsely adjust

basic setpoint

BASE SET/FINE To finely adjust basic

setpoint

LEDs

ACID SET (Blinking) Show that acid dos-

age is active

BASE SET (Blinking) Show that basic

dosage is active

ΔΔ

ΔΔ

ΔAL (Blinking) Indicate active alarm

FUNCTIONAL DESCRIPTION HI 8711

Keypad

ACID SET To set the working point

of acid dosage

BASE SET To set the working point

of basic dosage

MEASURE To enter measurement

mode and to enable
diagnostic tests

SENSOR TEST To display electrode mV

reading and, therefore,
verify its working condition

FRONT PANEL

SLOPE

ΔAL

Δ

COARSE

ACID SET

FINE

COARSE

FINE

BASE SET

HI 8711E

SENSOR

TEST

MEA

SURE

ACID

SET

ΔAL

BASE

SET

pH 7

TEST

pH 4

TEST

pH

HI 8711E

pH