Hanna Instruments HI 8720 Owner's manual

Category
Measuring, testing & control
Type
Owner's manual
1
www.hannainst.com
Panel Mounted
pH and ORP
Indicators and
Controllers
HI8510 • HI8512
HI8710 • HI8711
HI8720
Instruction Manual
2
PRELIMINARY EXAMINATION ..................................................................... 3
GENERAL DESCRIPTION ............................................................................. 3
MECHANICAL DIMENSIONS ....................................................................... 4
FUNCTIONAL DESCRIPTION HI8510 .......................................................... 5
FUNCTIONAL DESCRIPTION HI8512 .......................................................... 7
FUNCTIONAL DESCRIPTION HI8710 .......................................................... 9
FUNCTIONAL DESCRIPTION HI8711 ........................................................ 12
FUNCTIONAL DESCRIPTION HI8720 ........................................................ 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
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using these instru
ments.
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 [email protected] or view our worldwide contact list at www.
hannainst.com.
TABLE OF CONTENTS
WARRANTY
HI8510, HI8512, HI8710, HI8711 and HI8720 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 your local Hanna Instruments Office. 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 instru
ment 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.
3
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, please contact your local Hanna
Instruments Office.
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.
HI8510 and HI8512 pH and ORP panel‑mounted indicators, and
HI8710, HI8711 and HI8720 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 ‑ HI8710; OXID, REDUC ‑ HI8720) and the
possibility to set dosing action mode (OFF/AUTO/ON).
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
4
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.
MECHANICAL DIMENSIONS
5
FRONT PANEL
Keypad
SENSOR TEST To display the mV reading of the electrode and,
therefore, verify its working condition
pH7 TEST To verify the internal circuit of the meter in terms
of Offset compensation
pH4 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
FUNCTIONAL DESCRIPTION HI8510
6
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
REAR PANEL HI8510
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.
7
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
FRONT PANEL
FUNCTIONAL DESCRIPTION HI8512
8
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
REAR PANEL HI8512
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.
9
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
ALARM To display & set alarm tolerance
pH7 TEST To verify Offset compensation
pH4 TEST To verify amplifier circuit
Note: Each time a key is pressed the corresponding LED is turned ON
or changes its blinking behavior (ALARM).
Trimmers
OFFSET For Offset calibration
SLOPE For Slope calibration
ALARM To set the alarm tolerance
SET/COARSE To coarsely adjust the setpoint
SET/FINE To finely adjust the setpoint
FRONT PANEL
FUNCTIONAL DESCRIPTION HI8710
10
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 selec
tion
ON ‑ dosing always active
LEDs
ACID (blinking) Shows that acid dosage is
active
ALK. (blinking) Shows that alkaline dosage is
active
ALARM (blinking) Indicates an active alarm
11
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)
REAR PANEL HI8710
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.
12
ALARM To display and set the alarm tolerance
pH7 TEST To verify Offset compensation
pH4 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,
ALARM).
Keypad
ALK. SET To set the working point of basic dos
age
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
FRONT PANEL
FUNCTIONAL DESCRIPTION HI8711
13
Trimmers
SLOPE For Slope calibration
OFFSET For Offset calibration
ALARM 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
ALARM (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.
14
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)
REAR PANEL HI8711
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.
15
Keypad
SET To set the working point of ORP dosage
MEASURE To enter measurement mode and to enable
diagnostic tests
ALARM 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 (ALARM).
FRONT PANEL
FUNCTIONAL DESCRIPTION HI8720
16
Trimmers
CAL For ORP calibration
ALARM To display and set the alarm tolerance
SET/COARSE To coarsely adjust the setpoint
SET/FINE To finely adjust the setpoint
LEDs
OXID (Blinking) Show that the oxidant dosage is active
RED. (Blinking) Show that the reductant dosage is active
ALARM (Blinking) Indicate an active alarm
DOSAGE MODE SWITCH Blinks when the dosage switch is in OFF
or ON position.
Switches
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
17
1. BNC socket for ORP electrode
2. Input from amplified electrode
3. Oxid/Reduc dosage consent terminals
4. Connections for dosing pump
5. Alarm contacts
6. Power supply terminals
7. Fuse holder
8. OXID/RED. dosage selection terminals
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)
REAR PANEL HI8720
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.
18
HI8510
HI8512
SPECIFICATIONS
INPUT Electrode Transmitter
RANGE 0.00 to 14.00 pH
RESOLUTION 0.01 pH
ACCURACY
(@25 °C/77 °F)
±0.02 pH (0 to 100 °C)
±0.05 pH (‑20 to 0 °C)
±0.5%
INPUTS
High impedance 10
12
Ohm;
Reference and Matching pin inputs
are available
4 to 20 mA
POWER OUTPUT ±5 Vcc; 150 mA max load for amplified electrodes
CALIBRATION
Offset: ±2 pH with OFFSET trimmer;
Slope: 80 to 110% with SLOPE trimmer
TEMPERATURE
COMPENSATION
Fixed or automatic with Pt100 from ‑20 to 100 °C (‑4 to 212 °F)
RECORDER OUTPUT 0‑20 mA or 4‑20 mA (isolated)
BACKLIGHT Continuous ON
POWER SUPPLY 115 or 230 Vac; 60/50 Hz
ENCLOSURE
Black anodized aluminum body; front and back with ABS;
transparent splash‑proof front cover
ENVIRONMENT ‑10 to 50 °C (14 to 122 °F); RH max 95% non condensing
PANEL CUTOUT 141 x 69 mm (5.6 x 2.7”)
WEIGHT 1 kg (2.2 lb.)
INPUT Electrode Transmitter
RANGE ±1000 mV
RESOLUTION 1 mV
ACCURACY
(@25 °C/77 °F)
±5 mV ±0.5%
INPUTS
High impedance 10
12
Ohm;
Reference and Matching pin inputs
are available
4 to 20 mA
POWER OUTPUT ±5 Vcc; 150 mA max load for amplified electrodes
CALIBRATION Offset: ±200 mV with CAL trimmer
RECORDER OUTPUT 0‑20 mA or 4‑20 mA (isolated)
BACKLIGHT Continuous ON
POWER SUPPLY 115 or 230 Vac; 60/50 Hz
ENCLOSURE
Black anodized aluminum body; front and back with ABS; transparent
splash‑proof front cover
ENVIRONMENT ‑10 to 50 °C (14 to 122 °F); RH max 95% non condensing
PANEL CUTOUT 141 x 69 mm (5.6 x 2.7”)
WEIGHT 1 kg (2.2 lb.)
19
HI8710
HI8711
INPUT Electrode Transmitter
RANGE 0.00 to 14.00 pH
RESOLUTION 0.01 pH
ACCURACY
(@25 °C/77 °F)
±0.02 pH (0 to 100 °C)
±0.05 pH (‑20 to 0 °C)
±0.5%
INPUTS
High impedance 10
12
Ohm;
Reference and Matching pin inputs
are available
4 to 20 mA
POWER OUTPUT ±5 Vcc; 150 mA max load for amplified electrodes
CALIBRATION
Offset: ±2 pH with OFFSET trimmer;
Slope: 80 to 110% with SLOPE trimmer
TEMPERATURE
COMPENSATION
Fixed or automatic with Pt100 from ‑20 to 100 °C (‑4 to 212 °F)
RECORDER OUTPUT 0‑20 mA or 4‑20 mA (isolated)
SETPOINT RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
SETPOINT RANGE 0.00 to 14.00 pH
ALARM RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
ALARM RANGE 0.2 to 3.00 pH
CONSENT RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
BACKLIGHT Continuous ON
POWER SUPPLY 115 or 230 Vac; 60/50 Hz
ENCLOSURE
Black anodized aluminum body; front and back with ABS; transparent
splash‑proof front cover
ENVIRONMENT ‑10 to 50 °C (14 to 122 °F); RH max 95% non condensing
PANEL CUTOUT 141 x 69 mm (5.6 x 2.7”)
WEIGHT 1 kg (2.2 lb.)
INPUT Electrode Transmitter
RANGE 0.00 to 14.00 pH
RESOLUTION 0.01 pH
ACCURACY
(@25 °C/77 °F)
±0.02 pH (0 to 100 °C)
±0.05 pH (‑20 to 0 °C)
±0.5%
INPUTS
High impedance 10
12
Ohm;
Reference and Matching pin
inputs are available
4 to 20 mA
POWER OUTPUT ±5 Vcc; 150 mA max load for amplified electrodes
CALIBRATION
Offset: ±2 pH with OFFSET trimmer;
Slope: 80 to 110% with SLOPE trimmer
TEMPERATURE
COMPENSATION
Fixed or automatic with Pt100 from ‑20 to 100 °C (‑4 to 212 °F)
20
HI8720
RECORDER OUTPUT 0‑20 mA or 4‑20 mA (isolated)
SETPOINT RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
SETPOINT RANGE 0.00 to 14.00 pH
ALARM RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
ALARM RANGE 0.2 to 3.00 pH
DOSING CONTROL OFF/AUTO/ON with selection switch
OVER DOSING
CONTROL
Adjustable, from 5 min to 60 min with knob or Disable by wire strap ‑ on
rear panel
BACKLIGHT Continuous ON
POWER SUPPLY 115 or 230 Vac; 60/50 Hz
ENCLOSURE
Black anodized aluminum body; front and back with ABS;
transparent splash‑proof front cover
ENVIRONMENT ‑10 to 50 °C (14 to 122 °F); RH max 95% non condensing
PANEL CUTOUT 141 x 69 mm (5.6 x 2.7”)
WEIGHT 1 kg (2.2 lb.)
INPUT Electrode Transmitter
RANGE ±1000 mV
RESOLUTION 1 mV
ACCURACY
(@25 °C/77 °F)
±5 mV ±0.5%
INPUTS
High impedance 10
12
Ohm;
Reference and Matching pin inputs
are available
4 to 20 mA
POWER OUTPUT ±5 Vcc; 150 mA max load for amplified electrodes
CALIBRATION
Offset: ±2 pH with OFFSET trimmer;
Slope: 80 to 110% with SLOPE trimmer
RECORDER OUTPUT 0‑20 mA or 4‑20 mA (isolated)
SETPOINT RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
SETPOINT RANGE 0.00 to 14.00 pH
ALARM RELAY 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
ALARM RANGE 10 to 300 mV
DOSING CONTROL 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected)
OVER DOSING
CONTROL
Adjustable, from 5 min to 60 min with knob or Disable by wire strap ‑ on
rear panel
BACKLIGHT Continuous ON
POWER SUPPLY 115 or 230 Vac; 60/50 Hz
ENCLOSURE
Black anodized aluminum body; front and back with ABS; transparent
splash‑proof front cover
ENVIRONMENT ‑10 to 50 °C (14 to 122 °F); RH max 95% non condensing
PANEL CUTOUT 141 x 69 mm (5.6 x 2.7”)
WEIGHT 1 kg (2.2 lb.)
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Hanna Instruments HI 8720 Owner's manual

Category
Measuring, testing & control
Type
Owner's manual

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