Hanna Instruments PCA 311 Manuale utente

Instruction Manual

PCA 311, PCA 321, PCA 331

Bromine, pH, Temperature, ORP

Analyzers

www.hannainst.com

Dear Customer,

Thank you for choosing a Hanna Product.

This instruction manual has been written for the following:

PCA 331 – Bromine, pH, temperature, ORP analyzer.

PCA 321 – Bromine, pH, temperature analyzer.

PCA 311 – Bromine analyzer.

The analyzers have features such as: automatic bromine measurement, pH, temperature

and ORP measurement, bromine 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 bromine analyzers is:

PCA 3a1-b

a = 1 - Bromine analyzer

2 - Bromine, pH and Temperature analyzer

3 - Bromine, pH, Temperature and ORP analyzer

b = 1 - 115V AC 50-60Hz

2 - 220V AC 50-60Hz

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.

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

Bromine 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...................................19

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

GENERAL SETTINGS ...............................................33

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

BROMINE SETTINGS ............................................... 36

Reagent changing .......................................... 36

Measure settings .......................................... 37

Measure info ................................................ 37

Analog output ............................................. 37

Bromine dosing ........................................... 38

Alarms ........................................................ 39

CALIBRATE THE MEASURING CELL ............................. 40

Calibration date and factor ............................ 40

Calibration procedure ..................................... 40

pH SETTINGS (PCA 321, PCA 331) ............................. 41

Measure info............................................... 41

Analog output ............................................. 42

pH dosing .................................................. 42

Alarms ....................................................... 44

pH CALIBRATION (PCA 321, PCA 331) ....................... 44

One point calibration ................................... 45

Two-points calibration ..................................... 46

Process pH calibration .................................... 46

Set default calibration ..................................... 47

TEMPERATURE SETTINGS (PCA 321, PCA 331) ............ 48

Units ......................................................... 48

Measure info .............................................. 48

Analog output............................................. 48

Alarms ....................................................... 49

ORP SETTINGS (PCA 331) ..........................................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

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

instrument functions correctly. Any damaged or defective items

must be returned in their original packing materials together

with the supplied accessories.

WARNING: The PCA 311 - PCA 331 series of Bromine, pH and ORP

Analyzers are not designed for use with samples that are

inflammable or explosive in nature. If any sample solution

other than water is used with these products, test the sample/

product compatibility to assure user safety and proper product

performance.

Safety Precautions: Please take the time to read the safety precautions

carefully wherever they appear in this manual. They are

provided to prevent personal injury and damage to the

instrument. This safety information applies to the operators

and service personnel and the following two captions are

used:

CAUTION: identifies conditions or practices that could result in

damage 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 recommends the users of this product to review the

Material Safety Data Sheets and become familiar with safe

handling procedures and proper usage prior to handling

any chemicals.

GENERAL DESCRIPTION

The Hanna PCA 311, PCA 321 and PCA 331 series of

bromine, pH, ORP and temperature analyzers are micro-

processor controlled, process analyzers which continuously

monitor a sample stream for bromine content, pH, ORP

and temperature values.

The PCA 311-331 monitor the bromine in the 0.0 to 10.0 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 bromine. The color intensity is measured photometrically

(with a light beam and a photodetector) and converted to

bromine 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

window allowing the operator to check the reagent levels.

PCA 321 and PCA 331 analyzers use a HI 1005 probe to

continuously 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 331 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 311-331 analyzers meet NEMA 4X, 12 and

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 bromine 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 0.2 and 10.0 mg/L (ppm). Bromine dosing

system controls a SPST relay.

Each bromine 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.

Voltage output ranges of 0-10mV, 0-100mV, 0-1V or a

current output of 4-20 or 0-20 mA are available to drive an

external device such as a chart recorder.

The analyzer can drive a proportional dosing pump through

the 4-20 mA output, for bromine or for acid/alkali dosing.

The analog output is fully programmable and could be

proportional with bromine concentration, pH, ORP or

temperature value. The limits of the analog output is

selectable for each parameter.

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 311-331 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

warning system for “Old calibration” “Reagent expired” and

“SIM expired” is available.

The language for user interface can be easily changed without

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

SIDE VIEW

REAR VIEW

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

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