Hanna Instruments PCA 310 User manual

1
Instruction Manual
PCA 310, PCA 320, PCA 330
Chlorine, pH, Temperature, ORP
Analyzers
www.hannainst.com

2
Dear Customer,
Thank you for choosing a Hanna Product.
This instruction manual has been written for the following:
PCA 330 – Chlorine, pH, temperature, ORP analyzer.
PCA 320 – Chlorine, pH, temperature analyzer.
PCA 310 – Chlorine analyzer.
The analyzers have features such as: automatic chlorine measurement, pH, temperature
and ORP measurement, chlorine and pH dosing regulator, selectable sampling
periods, alarm system, data link through GSM network, user friendly interface,
serial communication through RS485, recorder output, 4-20mA dosing output,
Nema 4X enclosure.
The ordering code for chlorine analyzers is:
PCA 3a0-b
a = 1 - Chlorine analyzer
2 - Chlorine, pH and Temperature analyzer
3 - Chlorine, pH, Temperature and ORP analyzer
b = 1 - 115Vac 50-60Hz
2 - 220Vac 50-60Hz
Note: If the instrument is set for free chlorine analysis, the software will report at
startup Free chlorine and if it is set for total chlorine, the software will report at
startup Total chlorine.
Please read this instruction manual carefully before using the instrument. It will provide
you the necessary information for the correct use of the instrument, as well as a
more precise idea of its versatility.
Hanna Instruments reserves the right to modify the design, construction and appearance
of its products without advance notice.

3
TABLE OF CONTENTS
PRELIMINARY EXAMINATION........................................6
GENERAL DESCRIPTION..............................................7
MECHANICAL DIMENSIONS........................................9
FUNCTIONAL DESCRIPTION........................................10
DISPLAY, LEDS AND KEYBOARD...................................11
SPECIFICATIONS.......................................................14
OPERATING DESCRIPTION.........................................16
Chlorine measurement ......................................16
Method of analysis ........................................17
pH and temperature measurement ...................17
ORP measurement ........................................17
INITIAL PREPARATION AND INSTALLATION...................18
Installation Personnel......................................18
Location of the Instrument...............................18
Hydraulic Connections....................................18
Installing the Input Filter...................................20
Installing the pH and ORP probes .....................20
Installing the Pump Tubes.................................21
Electrical Connections.....................................22
STARTUP.....................................................................26
USER INTERFACE .......................................................27
Panels organization ........................................ 27
Main panels ............................................... 27
Measure panels ............................................. 28
Messages .................................................... 29
Menu mode ................................................ 29
Password procedure ..................................... 29
Navigating through menu .............................. 30
Modify a parameter ........................................ 30
PROGRAMMING THE ANALYZER .............................. 32
SETTING RESTORE.................... .............................. 32
GENERAL SETTINGS ...............................................33

4
Changing the password ................................. 33
Setting the language ..................................... 33
Analyzer serial number and software version ...... 33
Time and date ............................................. 33
WORKING MODE ................................................... 34
Automatic mode .......................................... 34
Standby mode ............................................. 34
Manual mode ............................................. 34
Read on demand ........................................... 35
Direct read ................................................. 35
System error relay..............................................35
CHLORINE SETTINGS .............................................. 36
Reagent changing .......................................... 36
Measure settings .......................................... 37
Measure info ................................................ 37
Analog output ............................................. 37
Chlorine dosing .......................................... 38
Alarms ........................................................ 39
CALIBRATE THE MEASURING CELL ............................. 40
Calibration date and factor ............................ 40
Calibration procedure ..................................... 40
pH SETTINGS (PCA 320, PCA 330) ............................. 41
Measure info............................................... 41
Analog output ............................................. 42
pH dosing .................................................. 42
Alarms ....................................................... 44
pH CALIBRATION (PCA 320, PCA 330) ....................... 44
One point calibration ................................... 45
Two-points calibration ..................................... 46
Process pH calibration .................................... 46
Set default calibration ..................................... 47
TEMPERATURE SETTINGS (PCA 320, PCA 330) ............ 48
Units ......................................................... 48
Measure info .............................................. 48

5
Analog output............................................. 48
Alarms ....................................................... 49
ORP SETTINGS (PCA 330) ..........................................50
Measure info .............................................. 50
Analog output ............................................ 50
Alarms ....................................................... 51
ANALOG OUTPUT .................................................. 52
Select the analog output type .......................... 52
Dosing through 4-20 mA output ...................... 52
CALIBRATE THE ANALOG OUTPUT .............................53
Output middle range ........................................54
SYSTEM LOG ..........................................................55
Set log ....................................................... 55
Clear system log .......................................... 55
View log ..................................................... 55
SERIAL COMMUNICATION ........................................ 57
Standard mode ............................................ 57
GSM ..................................................................... 58
GSM mode ................................................ 58
Setting the GSM feature ................................. 58
GSM connection .......................................... 59
Setting SMS feature ......................................... 60
Modem connection.......................................... 64
MAINTENANCE ...................................................... 65
Electrode conditioning and maintenance ........... 66
Changing peristaltic pump tubing .................... 68
Tubing replacement.......................................... 69
Cleaning measurement cell .............................. 69
Cell Cleaning Procedure ................................ 70
ERRORS, ALARMS AND WARNINGS ............................ 71
ACCESORIES ........................................................... 74

6
PRELIMINARY EXAMINATION
Remove the analyzer 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
immediately.
Each analyzer is supplied complete with:
• 2 reagent bottles (1 indicator and 1 buffer solution)
• 2 reagent bottle caps
• 1 DPD compound powder
• tubing
Note: Save all packing materials until you are sure that the instru-
ment functions correctly. Any damaged or defective items must
be returned in their original packing materials together with
the supplied accessories.
WARNING: The PCA 310 - PCA 330 series of Chlorine, pH and ORP
Analyzers are not designed for use with samples that are in-
flammable or explosive in nature. If any sample solution other
than water is used with these products, test the sample/prod-
uct compatibility to assure user safety and proper product per-
formance.
Safety Precautions: Please take the time to read the safety precautions
carefully wherever they appear in this manual. They are pro-
vided to prevent personal injury and damage to the instru-
ment. This safety information applies to the operators and ser-
vice personnel and the following two captions are used:
CAUTION::
::
: identifies conditions or practices that could result in dam-
age to the instrument or persons;
Warning::
::
: identifies conditions or practices that could result in personal
injury or loss of life.
Note: Because of the inherent dangers in handling chemical samples,
standards and reagents, HANNA Instruments strongly rec-
ommends the users of this product to review the Material Safety
Data Sheets and become familiar with safe handling proce-
dures and proper usage prior to handling any chemicals.

7
GENERAL DESCRIPTION
The Hanna PCA 310, PCA 320 and PCA 330 series of chlo-
rine, pH, ORP and temperature analyzers are microprocessor
controlled, process analyzers which continuously monitor a
sample stream for chlorine content, pH, ORP and temperature
values.
The PCA 310-330 monitor the free chlorine or total chlorine
in the 0 to 5 mg/L range depending on the factory settings
and used reagents.
In the DPD Colorimetric method, N, N-Diethyl-p-phenylene-
diamine indicator and a buffer are mixed with the sample.
The resulting chemical reaction causes a magenta color to
form. The color intensity is proportional to the concentration
of chlorine. The color intensity is measured photometrically
(with a light beam and a photodetector) and converted to
chlorine concentration, in mg/L, which is displayed on the
front panel.
Indicator and buffer reagent bottles are placed directly into
the instrument case. With a sampling period of 5 minutes,
reagents need to be replenished about once a month. The
reagent bottles are easily visible through the transparent win-
dow allowing the operator to check the reagent levels.
PCA 320 and PCA 330 analyzers HI 1005 probe to continu-
ously measure the pH of the sample stream in the range of 0
to 14 pH. The sample temperature is measured in the 5 to
75°C range. pH and temperature are displayed on the front
panel. pH value is corrected with temperature.
PCA 330 analyzer use HI 2008 platinum ORP electrode to
continuously measure the sample ORP value.
The pH/temperature combined sensor and the ORP sensor
are placed inside the case, directly in the sample stream.
The case of PCA 310-330 analyzers meet NEMA 4X, 12 and

8
13 standards. Molded fiberglass polyester has outstanding
chemical and temperature resistance.
The case provides wall mounting capability and door gasket
assures a watertight and dust-tight seal.
The electrical and hydraulic connections are made through
the side of the enclosure.
The front cover is secured with two lockable latches.
Four chlorine level setpoints can be adjusted by the operator:
a proportional dosing setpoint, two alarm setpoints and a
minimum level for dosing.
The proportional dosing factor (1/delta) is user selectable with
a delta between 0.1 and 5 mg/L (ppm). Chlorine dosing sys-
tem controls a SPST relay.
Each chlorine alarm can be enabled or disabled.
Three pH level setpoints can be adjusted by the operator: a
dosing setpoint and two alarm setpoints. The pH control mode
is user selectable: on/off or proportional dosing.
The proportional dosing factor (1/delta) is user selectable with
a delta between 0.1 and 2 pH . The on/off dosing hysteresis is
user selectable between 0.05 and 2.00 pH. pH dosing system
controls a SPST relay.
Each pH alarm can be enabled or disabled.
For temperature and ORP, two alarm levels can be set by the
user.
Each temperature or ORP alarm can be enabled or disabled.
Alarm condition controls a SPDT relay.
A system error feature provides relay activation to signals need
for operator intervention.
System error condition controls a SPST relay.
Two current outputs of 4-20 or 0-20 mA are available to drive
external devices such as chart recorders.
The analyzer can drive two dosing pumps through the 4-20
mA outputs for chloride and for acid/alkali dosing.
The analog output is fully programmable and could be propor-
tional with chlorine concentration, pH, ORP or temperature
value. The limits of the analog output is selectable for each
parameter.

9
The analyzer can store up to 3500 readings (at least 7 days at
3 minutes sampling interval), that are available for consulting
or downloading.
The PCA 310-330 analyzers can be monitored or controlled
through RS485 or GSM network connection.
Errors, alarms and warnings are sent through SMS (using GSM
module HI 504900).
The analyzer state can be interrogated by a simple call using
GSM phone.
Time is displayed on the main panel and a time related warn-
ing system for “Old calibration” “Reagent expired” and “SIM
expired” is available.
The language for user interface can be easily changed with-
out restarting the analyzer.
MECHANICAL DIMENSIONS
Case dimensions in mm & inches
254
304.8
338.3
389.1
374.8
254
393.7
367.1
209.8
83.1
13.32"
10"
12"
15.32"
3.27"
8.26"
14.76"
15.5"
10"
14.45"
FRONT VIEW
FRONT VIEW
SIDE VIEW
SIDE VIEW
REAR VIEW
REAR VIEW

10
FUNCTIONAL DESCRIPTION
1. Alarms, dosing, system error LED’s
2. Character Display
3. Cable glands
4. Keypad
5. Peristaltic Pump
6. Access Point to Cell
7. Measuring Cell
8. Drain Tube
9. Output Port
10. Drain Port Valve
11. Drain Port of Measuring Cell
12. Sample Tubing
13. Buffer Bottle
14. Pressure Regulator Output Port
15. Incoming Pressure Regulator
16. Indicator Bottle
17. Sample Inlet Port
18. pH Electrode (not included)
19. Electrodes Holder
20. Sample Output Port
21. Electrovalve
22. ORP Electrode (not included)
23. Reagent Tubing
24. Line Input

11
DISPLAY, LEDS AND KEYBOARD
DISPLAY
The display contains 4 lines with 20 characters on one line.
The information and error messages are clearly displayed in
plain language, without error codes.
The display has back light for better visibility.
The analyzer is in main panels mode when displays a panel
that contains the measured values. Several main panels could
be selected by pressing the up and down arrow keys. The PCA
310 do not have the main mode for the display.
1 - measured values
2 - controller status
3 - current time and date
4 - message line
The display is in chlorine, pH, ORP or temperature measuring
panels mode when displays one of those values and second-
ary information related to it. Several panels with different sec-
ondary information could be selected by pressing the up or
down arrow keys.
When the display is in one of the above modes, the measur-
ing units, the current time and the alarm or error status are also
displayed. PCA 310 is always in chlorine measuring panels.
MANUAL 16:35
1.35 mg/L 2 mV
6.98 pH
pH Out of Range >
3
2
4
1
CFM
MENU
SET
ESC
PCA-330
ALARM
Chlorine/pH/ORP
Analyzer
DOSING
CHLORINE
DOSING
ACID/ALK.
SYSTEM
ERROR
DISPLAY
KEYPAD
LEDS

12
1 - measured value (chlorine, pH, ORP or temperature)
2 - measurement units (mg/L, pH, mV, °C or °F)
3 - current time in format HH:MM
4 - warnings, alarms and errors, displayed one at a time
5 - secondary information.
LEDs
Three or four LEDs are present on the front panel:
ALARM LED (red) , signals the presence of at least one alarm
and the closing of the Alarm relay. When the alarm is
present, the LED blinks. When the analyzer is in
MANUAL mode, the LED is on but not blinking.
DOSING CHLORINE LED (green), signals the closing of the
chlorine dosing relay. When dosing stops, the LED is
turned off.
DOSING ACID/ALK. LED (green), signals the closing of the
acid/alkali dosing relay. When dosing stops, the LED
is turned off (PCA 320 and PCA 330 only).
SYSTEM ERROR LED (red), signals the presence of an error
and the closing of the System error relay. When the
error is present, the LED blinks. When in STANDBY
mode, the led is on but not blinking.
For PCA 310 the system error LED is moved in the dosing
ACID/ALK. LED position.
KEYPAD
The keypad has 8 keys with the following signification:
UP and DOWN ARROWS
• select the main display appearance,
• select the menu,
• select an item from a list
• edit values.
ALARM
DOSING
CHLORINE
SYSTEM
ERROR
16:35
1.35 mg/L Alarm
<Cl Calibration Old>
Min:0.00 Max5.00
3
12
4
5
ALARM
DOSING
CHLORINE
DOSING
ACID/ALK.
SYSTEM
ERROR

13
LEFT and RIGHT ARROWS
• select an error message,
• select an item to edit or
• select the current digit for editing.
MENU enter in menu mode.
CFM confirm the selected menu and edited values.
SET starts editing the selected item.
ESC
• return to the previous menu,
• exit from operation without saving.
SET
ESC
CFM
MENU

14
SPECIFICATIONS
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16
OPERATING DESCRIPTION
CHLORINE MEASUREMENT
Referring to the drawing on page 10 and the Fluidic Diagram
on page 17, the Sample Line is connected to the instrument at
the Sample Port (#17); an internal Regulator (#15) reduces
the inlet pressure from a maximum of 4 bar (57.2 psi) down to
1 bar (14.3 psi); from the Regulator a nylon tube is connected
to the input of the Electrovalve (#21). The output of the valve
goes to the Drain Port (#11) and then to the Measuring Cell
(#7). An optional Filter can be installed to the sample port if
the stream is excessively turbid.
The sample coming from the line normally flows through the
Measuring Cell (#7). It goes out from the Measuring Cell
through the Drain Tube (#8) and the Output Port (#9).
The Measuring Cell is accessible from the port placed on the
top (#6) for speedy cleaning and maintenance.
During the 100 seconds preceding the sampling, the ana-
lyzer solenoid input valve is open to allow sample flow to flush
the colorimeter cell. Every 3 to 90 minutes (user selectable),
the electrovalve closes stopping the sample flow and leaving
the sample cell full of fresh sample. Cell volume is controlled
by an overflow gateway.
As the sample inlet electrovalve closes, a series of measure-
ments (with LED on and off) of the unreacted sample is taken
to determine an average blank level prior to reagent addition.
The measurement of sample blank signal permits compensa-
tion for any turbidity or natural color, and provides the zero
reference point for the measurement.
The two channel Peristaltic Pump (#5) starts rotating causing
a precise quantity of buffer and indicator (#13 and #16) to
enter the colorimeter sample cell. Here a magnetically coupled
stirrer mixes the reagents with the sample.
After a delay for the color development, a series of measure-
ments (with LED on and off) are taken (sample level) to deter-
mine an average chlorine concentration measurement. The
reacted sample signal is then measured and displayed.
This sequence is repeated every 3 to 90 minutes (user-select-
able).

17
METHOD OF ANALYSIS
Free available
chlorine oxidizes
the DPD indicator
reagent at a pH
between 5.5 and
6.0 to form a ma-
genta-colored
compound. The
intensity of the re-
sulting color is
proportional to
the concentration
of chlorine in the
sample. The pur-
pose of the buffer
solution is to
maintain the
proper pH.
To measure total
residual chlorine
(free available
chlorine plus com-
bined chlorine) the PCA adds potassium iodide. The chloram-
ines in the sample cause iodide ions to become iodine which
then act with free chlorine to oxidize the DPD indicator. After
the chemical reaction is complete, the optical signal at 555
nm is compared to the signal measured through the sample
(before the reagents were added). From these measurements
chlorine concentration is calculated.
pH AND TEMPERATURE MEASUREMENT
The HI 1005 pH/temperature probe provides at the out port
a potential proportional with the pH. The temperature is mea-
sured with PT100 platinum sensor.
For increased accuracy the pH is corrected with temperature
and with the calibration coefficients. Up to 2 buffers can be
used for calibration.
The temperature can be displayed in °C or °F.
The probe can withstand pressure up to 6 bar (87 psi).
ORP MEASUREMENT
The HI 2008 probe provides at the out port a potential propor-
tional with the ORP value. The value is directly displayed in mV.
The probe can withstand pressure up to 6 bar (87 psi).
FIL
REGULAT
T
OR
OR
OR
VVE
TER
TRAP
(OPTIONAL)
PRESSURE
OR
O DRAIN
SAMPLE
INLET
REAGENT
BOTTLES
DETECT
STIR
BAR
MAGNET
DC
MOT
MOT
& REDUCER
PUMP
ROLLERS
SOLENOID
SAMPLE
AL
LED
SAMPLE OUTLET
PCA 301
REAGENTS
HI 70460
TOTALCHLORINE INDICATOR SOLUTION
R:--
S:- -
ETICPCA30A
Contents:
p-ToluenesulfonicAcid (6192-52-5)
Water(7732-18-5)
FORLABORATORY AND INDUSTRIAL USE ONLY
DONOT FREEZE
STOREAT ROOM TEMPERATURE
KEEPCONTAINER TIGHTLY CLOSED
PCA 301
REAGENTS
HI 70461
TOTALCHLORINE BUFFER SOLUTION
Xn:Harmful
R:22
S:46
ETICPCA30B
FORLABORATORY AND INDUSTRIAL USE ONLY
DONOT FREEZE
STOREAT ROOM TEMPERATURE
KEEPCONTAINER TIGHTLY CLOSED
HARMFULIF SWALLOWED.
IFSWALLOWED SEEK MEDICAL ADVICE IMMEDIATELY
ANDSHOW THIS CONTAINER OR LABEL.
Contents:
LithiumBimaleate (unknown)
LithiumMaleate (unknown)
Water(7732-18-5)
PROBE
HOLDER
ORP probe
PH probe
SAMPLE
OUTLET

18
INITIAL PREPARATION AND INSTALLATION
INSTALLATION PERSONNEL
Installation of the PCA 310-330 Chlorine, pH, ORP and
temperature analyzers should be undertaken by persons with
technical knowledge of the dangers associated with chemical
exposure and electrical shock.
Hanna Instruments assumes that persons performing the in-
stallation tasks are aware of the appropriate safety procedures.
CAUTION:Review the Material Safety Data Sheets (MSDS) before han-
dling the supplied chemical reagents.
LOCATION OF THE INSTRUMENT
Analyzer Location
Locate the analyzer as close as is reasonably possible to the
point where the sample is withdrawn from the product stream
(referred to as the sampling point).
The instrument should be mounted indoors, out of direct sun-
light. Instrument operating temperature is 5 to 40°C (41 to 104°F).
Sampling Point Location
Locate the sampling point to obtain a truly representative sample
from the product stream. For example, be sure the sampling
point is well downstream from a Chlorine and acid / alkali
feed. This assures that adequate mixing and reaction of the
Chlorine and acid / alkali before a sample is extracted.
HYDRAULIC CONNECTIONS
Note: Hydraulic connections should be installed only by qualified
personnel to assure conformity to applicable plumbing codes.
Sample Line Installation
Direct routing of sample lines is recommended.
If the large process pipes are horizontal, taps should be in-
serted vertically in the middle of the pipe to avoid pulling
sediment from
the bottom or
air bubbles
from the top
of the pipe
into the sam-
ple line.

19
A 1/2 BSP sample input fitting allows direct connection to the
optional input filter.
Sample line pressure should be between 0.07 and 4 bar (1
and 57.2 psi) with an ideal pressure of 0.7 bar (10 psi).
It is recommended to assure that the water inlet come at 1 m
above the instrument sample input pitting. For maintenance
issues is also recommended to install valves on both sam-
pling pipes.
Drain Line Installation
The drain hose fitting is a 20 mm (3/4”) hose barb on the
bottom of the instrument enclosure. An air gap between the end
of the drain hose and the drain is recommended to prevent any
back flow into the instrument in the event of drain blockage.
ORP probe
PH probe
PCA 301
REAGENTS
HI 70460
TOTALCHLORINE INDICATOR SOLUTION
R:--
S:--
ETICPCA30A
Contents:
p-ToluenesulfonicAcid (6192-52-5)
Water(7732-18-5)
FORLABORATORYAND INDUSTRIAL USE ONLY
DONOT FREEZE
STOREAT ROOM TEMPERATURE
KEEPCONTAINER TIGHTLYCLOSED
PCA 301
REAGENTS
HI 70461
TOTALCHLORINE BUFFER SOLUTION
Xn:Harmful
R:22
S:46
ETICPCA30B
FORLABORATORYAND INDUSTRIAL USE ONLY
DONOT FREEZE
STOREATROOM TEMPERATURE
KEEPCONTAINER TIGHTLYCLOSED
HARMFULIF SWALLOWED.
IFSWALLOWED SEEK MEDICAL ADVICE IMMEDIATELY
ANDSHOW THIS CONTAINER OR LABEL.
Contents:
LithiumBimaleate (unknown)
LithiumMaleate (unknown)
Water(7732-18-5)
TO DRAIN
FILTER
WATER INLET
WATER OUTLET
MIN.
1m

20
Return Line Installation
The return hose fitting is a 12 mm (1/2”) hose barb on the
bottom of the regulator output port and should always be
connected even when pressure is below 1 bar.
INSTALLING THE INPUT FILTER
In order to ensure maximum accuracy of measurements, it is
recommended to have always clear sample, with suspended
particles smaller than 0.5 μm. This can be achieved by in-
stalling two filters before the sample input.
The type of filters de-
pends on the quality of
the water: the first filter
should have 50-100
μm pore size, whereas
in any case the second
filter, the one closer to
the analyzer, has to be
0.5 μm.
For correct installing procedure and maintenance, see the
instructions of filters.
INSTALLING THE pH AND ORP PROBES
To mount the pH and ORP probes, first tunr off the analyzer.
Unscrew the closing caps from the electrode holder and remove