Instruction Manual
HI 9910 - HI 9911
HI 9920
Wall Mounted
pH & ORP
Controllers
http://www.hannainst.com
These Instruments are in
Compliance with the CE Directives
pH
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2
PRELIMINARY EXAMINATION .....................................................3
GENERAL DESCRIPTION.............................................................3
MECHANICAL LAYOUTS ............................................................. 4
FUNCTIONAL DIAGRAM HI 9910 ............................................... 6
FUNCTIONAL DIAGRAM HI 9911 ............................................... 9
FUNCTIONAL DIAGRAM HI 9920 ............................................. 12
CONNECTIONS & WIRING ....................................................... 14
NORMAL OPERATION & MEASUREMENT ................................... 19
pH CALIBRATION ................................................................... 20
ORP CALIBRATION ................................................................. 22
ADJUSTEMENT OF SETPOINT(S) ............................................... 23
PROPORTIONAL CONTROL ...................................................... 26
OVERDOSAGE TIMER...............................................................29
pH VALUES AT VARIOUS TEMPERATURES.................................30
REDOX MEASUREMENT (HI 9920)............................................31
ELECTRODE CONDITIONING & MAINTENANCE.............................33
SUGGESTED INSTALLATIONS FOR pH/ORP ELECTRODES..............34
ACCESSORIES.........................................................................35
WARRANTY ............................................................................ 37
OTHER PRODUCTS FROM HANNA ............................................ 38
CE DECLARATION OF CONFORMITY ........................................... 39
ISO 9000 Certified
Company since 1992
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
Dear Customer,
Thank you for choosing a Hanna Product.
Please read this instruction manual carefully before using the
instrument. This manual will provide you with the necessary
information for a correct use of the instrument, as well as a more
precise idea of its versatility. If you need more technical information, do not hesitate to e-mail us at tech@hannainst.com.
These instruments are in compliance with the directives
EN 50081-1, 50082-1 and 61010-1.
3
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
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, notify your Dealer.
Note: Save all packing materials until you are sure that the
instrument functions correctly. Any defective item must be
returned in the original packaging together with the supplied
accessories.
IMPORTANT:
1. Read the instructions before using the instrument.
2. The instrument should be connected to a mains socket.
3. Never install the controller outdoors, in a wet or humid area or
under direct sun light. Nor install the controller where liquids may
be sprayed or poured on it.
4. The instrument’s main power line as well as the dosage and
alarm terminals are protected by separate 2A fuses. Use only 2A
fuses for replacement.
Hanna's wall-mounted pH and ORP controllers
with proportional
control are designed to meet a variety of process control requirements.
The electrodes can be installed quickly and easily. Simply plug the
universal BNC connector into the socket and twist it into a secured
position. Accurate measurements are displayed on a large LCD.
The controllers come equipped with relays operating at a maximum of
2A (240V).
The Hanna controllers incorporate a triple contact alarm system.
When activated, the alarm contacts will open or close, triggering the
mechanism of your choice, whether a buzzer, light or any other
electrical device.
The recorder output terminals are isolated from the controller circuitry
to avoid any interference and are user-switchable between 0 to 20
mA or 4 to 20 mA.
In order to avoid electrical noise and interference all models provide
for a ground probe (differential input).
These controllers are housed in a rugged, modular, fiber-reinforced
ABS housing.
4
Figure 2 illustrates the controls and terminals on the HI 9910 pH
controller. Layouts vary from model to model based on their features
and capabilities.
MECHANICAL LAYOUTSMECHANICAL LAYOUTS
MECHANICAL LAYOUTSMECHANICAL LAYOUTS
MECHANICAL LAYOUTS
BNC CONNECTOR FOR ELECTRODE
WIRING ACCESS
PORTS
4 mm BANANA SOCKET
FOR GROUND PROBE
pH
0
1
2
ALARM
MTC ATC
mA OUTPUT
TEMP.COMP.
4/20 0/20
HI 9910
pH
SECONDS
090
45
MTC
°C
-10
80
10
0
30
20
60
70
40
50
0pH2.0
0.511.5
COARSE
FINE SLOPEOFFSET
PROPORTIONAL SETTINGS
ALARM
ON
OFF
SET
READ
ACID
DOSING
ALK
SET POINT
ALARM DOSINGTIME
MINUTES
1
10
2.557.5
SET pH
ALARM
LINE
LCD DISPLAY
CALIBRATION
TRIMMERS
CONTROL KNOBS
AND SWICHES
OUTPUT CONTACTS
TEMP.COMPENSATION
SWITCH
DOSING TERMINALS
POWER SUPPLY
TERMINALS
ALARM CONTACTS
Fig. 2
Fig. 1
Figure 1: displays the connector for electrode and the wiring access
ports.
All models can be wired to work with 110/115V or 220/240V
50/60 Hz power supplies.
The models covered in this manual are:
HI 9910 a single setpoint pH controller
HI 9911 a dual setpoint pH controller, specifically designed for
all those applications in which the pH value intends to
oscillate both up and down
HI 9920 ORP controller, designed for numerous industrial
applications, but in particular for swimming pools and
drinking water sanitation
5
3.8“
96.9 mm
25 mm
1“
75 mm
3“
Fig. 3
227.8 mm
9“
188.6 mm
7.4“
221.8 mm
8.7“
174.8 mm
6.9“
Fig. 4
Figure 3 is a dimensioned, bottom view of the wall mounted
controllers. The modular design isolates the control circuitry from the
contacts making it possible to make the connections and then close
the compartment. Adjustments can then be made only in the control
area, without having to open the contacts compartment.
Figure 4 is a dimensioned front view of the wall mounted controllers.
The molded, mounting holes in the corners provide for quick and
secure installation. No additional hardware is needed for mounting.
All electrical connections and controls are located on the front of the
instrument so that adjustment can be made without having to
remove the unit.
6
FUNCTIONAL DIAGRAM HI 9910FUNCTIONAL DIAGRAM HI 9910
FUNCTIONAL DIAGRAM HI 9910FUNCTIONAL DIAGRAM HI 9910
FUNCTIONAL DIAGRAM HI 9910
SINGLE SETPOINT, SINGLE SETPOINT,
SINGLE SETPOINT, SINGLE SETPOINT,
SINGLE SETPOINT,
pp
pp
p
H CONTROLLERH CONTROLLER
H CONTROLLERH CONTROLLER
H CONTROLLER
pH
0
1
2
ALARM
MTC ATC
mA OUTPUT
TEMP.COMP.
4/20 0/20
HI 9910
pH
SECONDS
090
45
MTC
°C
-10
80
10
0
30
20
60
70
40
50
0pH2.0
0.511.5
COARSE
FINE SLOPEOFFSET
PROPORTIONAL SETTINGS
ALARM
ON
OFF
SET
READ
ACID
DOSING
ALK
SET POINT
ALARM DOSINGTIME
MINUTES
1
10
2.557.5
SET pH
ALARM
LINE
1
2
3
4
5
6
7
8
9
10
11
12
14
13
15
16
17
18
19
20
21
22
23
FRONT PANEL
Left panel
1. Liquid Crystal Display
2. Slope calibration trimmer
3. Fine setpoint trimmer
4. Coarse setpoint trimmer
5. Offset calibration trimmer
6. Dosing LED visual signal
7. READ for actual measurement and SET for setpoint
adjustment
8. Acid or Alkaline Dosage selection
9. Alarm LED and switch to disable the alarm
10. Graded dial for Manual Temperature Compensation
11. Overdosage timer
12. Proportional pH band and time cycle settings
Right panel
13. pH alarm setting from 0 to 2 pH
14. Short the terminals if a ground probe is not in use, or
connect the ground probe wire to the Matching Pin terminal
15. Three-wire Pt 100 plus a shield protection
7
Unplug the instrument from the power supply before
wiring and replacing the fuses.
24
25
24. Female BNC socket for combination pH electrode
25. 4-mm Banana socket for ground probe
16. Recorder output contacts
17. Automatic or Manual Temperature Compensation switch
18. 0 to 20 or 4 to 20 mA isolated output switch
19. Triple contact alarm in a Normally Closed (NC) or a Normally
Open (NO) position.
20. Powered dosage terminals (Relay)
21. 110/115V or 220/240V power configuration
22. Incoming power terminals
23. Fuses
BOTTOM VIEW
8
Specifications HI 9910
RANGE 0.00 to 14.00 pH
RESOLUTION 0.01 pH
ACCURACY ±0.02 pH
(@20°C/68°F)
TYPICAL EMC ±0.1 pH
DEVIATION
mA OUTPUT User-selectable 0 to 20 mA or 4 to 20 mA
over the 0-14 pH range with isolated output
CALIBRATION Through "OFFSET" and "SLOPE" trimmers
(Max. ±1.5 pH for offset and 80% to 110% for slope)
SETPOINT From 0.00 to 14.00 pH with "COARSE" and "FINE"
RANGE trimmers with "ACID" or "ALK" (alkaline) selection
PROPORTIONAL pH is user adjustable from 0.0 to 2.0 and
CONTROL time cycle from 0 to 90 seconds
DOSING TERMINALS Relay terminals (115 to 240V, Max.2A,1,000,000
strokes) are activated when pH exceeds the setpoint with
“ACID” dosage or falls below the setpoint with “ALK”
selection (Alkaline dosage)
ENVIRONMENT -10 to 50 °C (14 to 122 °F)
max. 95% RH non-condensing
WEIGHT 1.6 Kg (3.5 lb.)
ENCLOSURE 181 x 221 x 142mm (7.1 x 8.7 x 5.6")
CASE MATERIAL Fiber-reinforced, self-extinguishing ABS
POWER SUPPLY 220/240V or110/115V at 50/60Hz
TEMPERATURE
COMPENSATION
Manual from -10 to 80 °C (14 to 176 °F) or
automatic with a 3-wire Pt 100 probe from 0 to 50
°C (32 to 122 °F)
ALARM
CONTACT
Terminals can be configured as normally open or
normally closed (isolated output Max. 2A, Max. 240V,
resistive load, 1,000,000 strokes). The alarm is
activated if pH varies by more than user-selectable
interval (0 to 2 pH) from setpoint or due to overdosage
9
FUNCTIONAL DIAGRAM HI 9911FUNCTIONAL DIAGRAM HI 9911
FUNCTIONAL DIAGRAM HI 9911FUNCTIONAL DIAGRAM HI 9911
FUNCTIONAL DIAGRAM HI 9911
DUAL SETPOINT, DUAL SETPOINT,
DUAL SETPOINT, DUAL SETPOINT,
DUAL SETPOINT,
pHpH
pHpH
pH
CONTROLLER CONTROLLER
CONTROLLER CONTROLLER
CONTROLLER
pH
0
SECONDS
pH
2.0 0
TIMER
MINUTES
90
0.5
45
1
1.5
COARSE FINE SLOPEOFFSET
ALKALINE SET
ACID SET
PROPORTIONAL SETTINGS
1
10
2.557.5
ACID
ALARM
ON
OFF
SET
READ
ACID
ALK
ACID
FEED
ALK
MTC
°C
-10 80
10
0
30
20
60
70
40
50
1
10
2.557.5
ALK
HI 9911
pH
0
1
2
ALARM
MTC ATC
mA OUTPUT
TEMP.COMP.
4/20 0/20
SET ACID
ALARM
LINE
SET ALK
1
2
3
4
5
6
7
8
9
10
11
12
14
13
15
16
17
18
19
20
21
22
23
FRONT PANEL
Left panel
1. Liquid Crystal Display
2. Slope calibration trimmer
3. Fine setpoint trimmers for acid and alkaline feed
4. Coarse setpoint trimmers for acid and alkaline feed
5. Offset calibration trimmer
6. Dosing LED signals for acid and alkaline feed
7. READ for actual measurement and SET for setpoint
adjustment
8. Acid or Alkaline selection for setpoint
9. Alarm LED and switch to disable the alarm
10. Graded dial for Manual Temperature Compensation
11. Two independent overdosage timers
12. Proportional pH band and time cycle settings
Right panel
13. pH alarm setting from 0 to 2 pH
14. Short the terminals if a ground probe is not in use, or
connect the ground probe wire to the Matching Pin terminal
15. Three-wire Pt 100 plus a shield protection
16. Recorder output contacts
17. Automatic or Manual Temperature Compensation switch
10
Unplug the instrument from the power supply before
wiring and replacing the fuses.
24
25
24. Female BNC socket for combination pH electrode
25. 4-mm Banana socket for ground probe
18. 0 to 20 or 4 to 20 mA isolated output switch
19. Triple contact alarm in a Normally Closed (NC) or a Normally
Open (NO) position.
20. Powered dosage terminals (Relays)
21. 110/115V or 220/240V power configuration
22. Incoming power terminals
23. Fuses
BOTTOM CONNECTION
11
Specifications HI 9911
RANGE 0.00 to 14.00 pH
RESOLUTION 0.01 pH
ACCURACY ±0.02 pH
(@20°C/68°F)
TYPICAL EMC ±0.1 pH
DEVIATION
mA OUTPUT User-selectable 0 to 20 mA or 4 to 20 mA
over the 0-14 pH range with isolated output
CALIBRATION Through "OFFSET" and "SLOPE" trimmers
(Max. ±1.5 pH for offset and 80% to 110% for slope)
SETPOINT
RANGE
PROPORTIONAL pH is user adjustable from 0.0 to 2.0 and
CONTROL time cycle from 0 to 90 seconds
DOSING TERMINALS Two sets of independent relay terminals (115 to 240V,
Max.2A, 1,000,000 strokes) are activated whenever pH
exceeds the “ACID” setpoint or falls below the “ALK”
setpoint (Alkaline dosage)
ENVIRONMENT -10 to 50 °C (14 to 122 °F)
max. 95% RH non-condensing
WEIGHT 1.6 Kg (3.5 lb.)
ENCLOSURE 181 x 221 x 142mm (7.1 x 8.7 x 5.6")
CASE MATERIAL Fiber-reinforced, self-extinguishing ABS
POWER SUPPLY 220/240V or110/115V at 50/60Hz
From 0.00 to 14.00 pH with 2 trimmers: "COARSE"
for approx. regulation, "FINE" for fine tuning.
TEMPERATURE
COMPENSATION
Manual from -10 to 80 °C (14 to 176 °F) or automatic
with 3-wire Pt 100 probe from 0 to 50 °C (32 to 122 °F)
ALARM
CONTACT
Terminals can be configured as normally open or
normally closed (isolated output Max. 2A, Max.
240V, resistive load, 1,000,000 strokes). The alarm
is activated if pH varies by more than user-selectable
interval (0 to 2 pH) from setpoint or due to
overdosage
12
FUNCTIONAL DIAGRAM HI 9920FUNCTIONAL DIAGRAM HI 9920
FUNCTIONAL DIAGRAM HI 9920FUNCTIONAL DIAGRAM HI 9920
FUNCTIONAL DIAGRAM HI 9920
ORP CONTROLLER ORP CONTROLLER
ORP CONTROLLER ORP CONTROLLER
ORP CONTROLLER
4/20 0/20
mV
0
100
200
ALARM
mA OUTPUT
0
SECONDS
mV
200
0
TIMER
MINUTES
90
50
45100
150
COARSE FINECAL
PROPORTIONAL SETTINGS
ALARM
ON
OFF
SET
READ
DOSING
OXID
RED
1
10
2.557.5
HI 9920
mV
ORP
SET POINT
SET mV
ALARM
LINE
1
3
4
5
6
7
8
9
11
12
14
13
16
18
19
20
21
22
23
FRONT PANEL
Left panel
1. Liquid Crystal Display
3. Fine setpoint trimmer
4. Coarse setpoint trimmer
5. Calibration trimmer
6. Dosing LED visual signal
7. READ for actual measurement and SET for setpoint
adjustment
8. Oxidization or Reduction Dosage selection
9. Alarm LED and switch to disable the alarm
11. Overdosage timer
12. Proportional ORP band and time cycle settings
Right panel
13. ORP alarm setting from 0 to 200 mV
14. Short the terminals if a ground probe is not in use, or
connect the ground probe wire to the Matching Pin terminal
16. Recorder output contacts
18. 0 to 20 or 4 to 20 mA isolated output switch
19. Triple contact alarm in a normally-closed (NC) or a normally
open (NO) position.
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