Hanna Instruments HI 9923 User manual

Instruction Manual
http://www.hannainst.com TheseInstrumentsarein
Compliancewith theCE Directives
ALARM
LINE
SETEC
SETpH
pH
0SECONDS
mS2.0 0
TIMER
MINUTES
90
PROPORTIONAL SETTINGS
4
0SECONDS
pH 2.0 0
TIMER
MINUTES
90
PROPORTIONAL SETTINGS
1
SLOPE CAL
ALARM
ON
OFF
0.5 1.5
SET
FERT
mS
OFFSET SLOPEALARM
ON
OFF
0.5 1.5
SET
ACID
ALA
HI 991
110
2.5 57.5
110
2.5 57.5
ALA
pH
5
EC
mS
FE
FEE
23
ACID
ALK
pH
0
1
2
0
1
2
mS
ALARM
ZEROCAL
HI 9913 - HI 9923
HI 9935
Wall Mounted Dual
Conductivity/TDS &
pH Controllers

2
ISO 9000 Certified
Company since 1992
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
DearCustomer,
Thank you for choosing a Hanna Product.
Please read this instruction manual carefully before using the instru-
ment.This manual will provide youwith 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 [email protected].
These instruments are in compliance with the directives
EN50081-1,50082-1and61010-1.
PRELIMINARY EXAMINATION........................................................3
GENERAL DESCRIPTION ................................................................3
MECHANICAL LAYOUTS.................................................................4
FUNCTIONAL DIAGRAM HI 9913..................................................6
FUNCTIONAL DIAGRAM HI 9923..................................................9
FUNCTIONAL DIAGRAM HI 9935................................................12
CONNECTIONS & WIRING ..........................................................14
NORMAL OPERATION & MEASUREMENT .....................................19
pH CALIBRATION.......................................................................20
CONDUCTIVITY/TDSCALIBRATION................................................21
ADJUSTMENT OF SETPOINT(S) ................................................... 23
PROPORTIONAL CONTROL.......................................................... 24
CONDUCTIVITY DEAD BAND (HI 9923)........................................26
OVERDOSAGETIMERS ................................................................26
pH VALUES AT VARIOUS TEMPERATURES...................................27
pH ELECTRODE CONDITIONING & MAINTENANCE.........................28
CONDUCTIVITY/TDS PROBE CLEANING & MAINTENANCE...............29
SUGGESTED INSTALLATIONS FOR pH ELECTRODE ........................30
SUGGESTED INSTALLATIONS FOR EC/TDS PROBE ........................31
ACCESSORIES.............................................................................33
WARRANTY ................................................................................34
CE DECLARATION OF CONFORMITY.............................................. 35

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 ship-
ping. 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 conductivity/TDS and pH controllers are
designed to meet a variety of process control requirements, especially
those in horticultural, hydroponics and agricultural applications on
the one hand and boilers and cooling towers on the other.
All controllers provide for two separate relays, one for pH and another
for Conductivity/TDS. HI 9913 and HI 9935 also come with propor-
tional control to save on use of chemicals and fertilizers.
All models operate with the optional Hanna 4-ring probes to provide
a linear and repeatable measurement. The conductivity/TDS probes
can be installed quickly and easily. Simply plug the DIN connector
into the socket and tighten the retainer ring.
The EC/TDS probes incorporate a temperature sensor and the control-
lerswillautomaticallycompensate for the temperature effect. Accurate
measurements are displayed on a large LCD.
Similarly, the pH electrode can be installed quickly and easily. Simply
plug the universal BNC connector into the socket and twist it into a
secured position. In order to avoid electrical noise and interference,
the pH circuitry also provides for a ground probe (differential input).

4
pH
0
1
2
0
1
2
mS
ALARM
pH
0SECONDS
mS 2.0 0
TIMER
MINUTES
90
PROPORTIONAL SETTINGS
47
0SECONDS
pH 2.0 0
TIMER
MINUTES
90
PROPORTIONAL SETTINGS
14
SLOPE CAL
ALARM
ON
OFF
0.5 1.5
SET
FERT
mS
OFFSET SLOPE ALARM
ON
OFF
0.5 1.5
SET
ACID
ALARM
HI 9913
110
2.5 57.5
110
2.5 57.5
ALARM
pH
56
EC
mS
FEED
FEED
23
SET pH
SET EC
ALARM
LINE
ACID
ALK
LCD DISPLAY
CALIBRATION
TRIMMERS
CONTROL KNOBS
AND SWICHES
DOSING TERMINALS
POWER SUPPLY
TERMINALS
ALARM CONTACTS
MATCHING PIN
ZERO CAL
Fig. 2
Figure 2 illustrates the controls and terminals.
MECHANICAL LAYOUTSMECHANICAL LAYOUTS
MECHANICAL LAYOUTSMECHANICAL LAYOUTS
MECHANICAL LAYOUTS
BNC CONNECTOR
MATCHING PIN FOR GROUND PROBE
DIN CONNECTOR
WIRING ACCESS
PORTS
Fig. 1
The controllers come equipped with relays operating at a maximum of
2A (240V).
They 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.
Thecontrollers are housed in a rugged, modular, fiber-reinforced ABS
housing.
All models can be wired to work with 110/115V or 220/240V at
50/60 Hz power supplies.
Figure 1 illustrates the connector for pH electrode, matching pin
connection, conductivity/TDS probe and the wiring access ports.

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
controller. 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 controller.
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 9913FUNCTIONAL DIAGRAM HI 9913
FUNCTIONAL DIAGRAM HI 9913FUNCTIONAL DIAGRAM HI 9913
FUNCTIONAL DIAGRAM HI 9913
pH
0
1
2
0
1
2
mS
ALARM
pH
0SECONDS
mS 2.0 0
TIMER
MINUTES
90
PROPORTIONAL SETTINGS
47
0SECONDS
pH 2.0 0
TIMER
MINUTES
90
PROPORTIONAL SETTINGS
14
SLOPE CAL
ALARM
ON
OFF
0.5 1.5
SET
FERT
mS
OFFSET SLOPE ALARM
ON
OFF
0.5 1.5
SET
ACID
ALARM
HI 9913
110
2.5 57.5
110
2.5 57.5
ALARM
pH
56
EC
mS
FEED
FEED
23
SET pH
SET EC
ALARM
LINE
ACID
ALK
1
3
4
5
6
7
8
9
10
11
13
17
18
19
20
21
23
2
2
9
25
12
14
16
22
24
ZERO CAL
FRONTPANEL
Left panel
1. Alarm LED signal for pH
2. Liquid Crystal Display for pH and Conductivity (EC)
3. Acid feed LED and dial to adjust the pH setpoint
4. Selection switch for Acid or Alkaline dosage
5. Alarm disable switch for pH
6. Slope calibration trimmer for pH
7. Offset calibration trimmer for pH
8. Proportional pH band and time cycle settings
9. Two independent overdosage timers
10. Alarm LED signal for Conductivity (EC)
11. Fertilizer feed LED and dial to adjust the Conductivity setpoint
12. Zero calibration trimmer for Conductivity (EC)
13. Slope calibration trimmer for Conductivity (EC)
14. Proportional Conductivity band and time cycle settings
16. Alarm disable switch for Conductivity (EC)
Right panel
17. pH alarm setting from 0.0 to 2.0 pH
18. Short the terminals if a pH ground probe is not in use, or
connect the ground probe wire to the Matching Pin terminal
19. Conductivity alarm setting from 0 to 2.0 mS/cm (EC)

7
Unplug the instrument from the power supply before
wiring or replacing the fuses.
26
27
28
20. Triple contact alarm in a Normally Closed (NC) or a Normally
Open (NO) position.
21. Powered dosage terminals (Relay) for pH correction
22. Powered dosage terminals (Relay) for EC correction
23. 110/115V or 220/240V power configuration
24. Incoming power terminals
25. Fuses
BOTTOM VIEW
26. Female BNC connector for a combination pH electrode
27. 4-mm Banana socket for the pH ground probe
28. Female DIN connector for Conductivity probe

8
Specifications HI9913
RANGE 0.00to 14.00pH and0.00 to10.00 mS/cm(EC)
RESOLUTION 0.01pHand 0.01 mS/cm
ACCURACY ±0.02pH and ±2%F. S.
(@20°C/68°F)
TYPICALEMC ±0.1 pH and ±2% F. S.
DEVIATION
CALIBRATION
WEIGHT 1.6Kg (3.5 lb.)
ENCLOSURE 181x 221 x 142mm (7.1 x 8.7 x5.6")
CASE MATERIAL Fiber-reinforced, self-extinguishing ABS
SETPOINTRANGE From 4.0 to 7.0 pH and 1.0 to 4.0 mS/cm (EC)
PROPORTIONAL
CONTROL
ALARM
CONTACT
POWER SUPPLY 220/240Vor 110/115Vat50/60Hz
DOSING
TERMINALS
ENVIRONMENT -10 to 50°C (14 to 122°F)
max. 95% RH non-condensing
Through "OFFSET" and "SLOPE" trimmers for pH, and
“ZERO CAL” and “SLOPE CAL” for Conductivity (EC)
Two independent controls: pH from 0.0 to 2.0 and
Conductivity (EC) from 0.0 to 2.0 mS/cm with two
separate time cycles from 0 to 90 seconds
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 falls below the setpoint by the user-
selectable interval (0.0 to 2.0 pH), or conductivity
exceeds the setpoint by more than the user-selectable
interval (0 to 2.0 mS/cm) or due to overdosage
Two sets of independent terminals (115 to 240V,
Max.2A, 1,000,000 strokes) are activated whenever
pH exceeds the pH setpoint and/or conductivity falls
below the EC setpoint
PROBE Any combination pH electrode with a universal BNC
connector and Hanna Conductivity 4-ring
potentiometric probe with built-in temperature sensor
and DIN connector (optional)

9
FUNCTIONAL DIAGRAM HI 9923FUNCTIONAL DIAGRAM HI 9923
FUNCTIONAL DIAGRAM HI 9923FUNCTIONAL DIAGRAM HI 9923
FUNCTIONAL DIAGRAM HI 9923
pH
0
mS
0.50
m TIMER
S
MINUTES
510
pH TIMER
MINUTES
16
SLOPE CAL
AUTO
MANUAL
SET
mS
OFFSET SLOPE
AUTO
MANUAL
SET
ALK
ALARM
HI 9923
190
45
190
45
ALARM
pH
mS
DEAD BAND
FEED
7.5
2
4
BLEED
3
5
SET pH
SET EC
ALARM
LINE
1
3
5
6
7
9
10
11
15
18
17
19
20
21
2
9
25
12
13
16
ZERO CAL
pH
0
1
2
0
1
2
mS
ALARM
22
23
24
FRONTPANEL
Left panel
1. Alarm LED signal for pH
2. Liquid Crystal Display for pH and Conductivity
3. Alkaline feed LED and dial to adjust the pH setpoint
5. Alarm disable switch for pH
6. Slope calibration trimmer for pH
7. Offset calibration trimmer for pH
9. Two independent overdosage timers
10. Alarm LED signal for Conductivity
11. Bleed LED and dial to adjust the Conductivity setpoint
12. Zero calibration trimmer for Conductivity
13. Slope calibration trimmer for Conductivity
15. Conductivity Dead Band setting
16. Alarm disable switch for Conductivity
Right panel
17. pH alarm setting from 0.0 to 2.0 pH
18. Short the terminals if a pH ground probe is not in use, or
connect the ground probe wire to the Matching Pin terminal
19. Conductivity alarm setting from 0 to 2.0 mS/cm
20. Triple contact alarm in a Normally Closed (NC) or a Normally
Open (NO) position.
21. Powered dosage terminals (Relay) for pH correction
22. Powered dosage terminals (Relay) for Conductivity correction

10
26
27
28
23. 110/115V or 220/240V power configuration
24. Incoming power terminals
25. Fuses
BOTTOM VIEW
26. Female BNC connector for a combination pH electrode
27. 4-mm Banana socket for the pH ground probe
28. Female DIN connector for conductivity probe
Unplug the instrument from the power supply before
wiring or replacing the fuses.