Wtw PHotoFlex pH Manual de usuario

QUICK START GUIDE

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pHotoFlex®pH

LED FILTER PHOTOMETER WITH INTEGRATED pH FUNCTION

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pHotoFlex®pH

Printed in Germany.

pHotoFlex®pH Contents

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Contents

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Display and socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Inserting a cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Maintenance, cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

General errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Part of the process of consequently improving our products is the continuous

further development of the range of photometric tests offered and the meter

firmware. All current data for the pHotoFlex®pH can be found on the Internet

under www.WTW.com:

Firmware

Method data

Analysis specifications

Operating manual

You can easily transfer new firmware to your instrument with the aid of the

AK 540/B cable and a PC. More detailed information can be found in the

detailed operating manual on the CD-ROM provided.

Safety pHotoFlex®pH

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Safety

Target group The meter was developed for work in the field and in the laboratory.

We assume that, as a result of their professional training and

experience, the operators will know the necessary safety precautions

to take when handling the chemicals of photometric test sets.

The personnel responsible for the commissioning, operation and

maintenance must have the necessary qualifications for this work. If the

personnel do not have the required skills they have to be instructed.

Furthermore, it must be ensured that the personnel read and

completely understand the present operating manual.

Safety instructions Important safety instructions are highlighted in this operating manual.

They are indicated by the warning symbol (triangle) in the left column.

The signal word (e.g. "Caution") indicates the level of danger:

CAUTION

indicates a possibly dangerous situation that can lead to slight

(reversible) injury if the safety instruction is not followed.

NOTE

indicates a possibly dangerous situation where goods might be

damaged if the actions mentioned are not taken.

Safe operation

CAUTION

Danger of eye damage by visible and invisible LED radiation. In

the cell shaft there are light emitting diodes (LED) of the 1M class.

Do not look at the radiation using optical instruments. With

normal, authorized use there is no hazard.

Display and socket field

Display The graphic display shows all information of the current measurement

in the measured value display. The illumination enables to read the

display even in the darkness.

Measuring mode \ measured

parameter

Measured value (with unit)

Program and citation form

Diameter of the cell and

measuring range

Status line with date and time

Photometry \ Concentration

1.29

mg/l

2: A5/25 MC NH4

-N

16 mm 0.20 - 8.00 mg/l

01.02.05 15:12

pHotoFlex®pH Power supply

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Socket field

Identifying the

connectors

Power supply

You can operate the meter either with batteries, rechargeable battery

or a power pack.

The LoBat display indicator appears when the batteries or

rechargeable battery is nearly discharged.

General operating principles

This section contains basic information on the operation of the

pHotoFlex®pH.

Operating modes Measurement

The display indicates measurement data in the measured value

display

Calibration

The display indicates a calibration process with calibration

information,

or a process to carry out a zero adjustment

Data transmission

The meter transmits measuring datasets or calibration records to the

serial interface

Configuration

The display indicates a menu with further menus, settings and

functions

12345

1pH electrode

2pH temperature sensor

3Power pack (9 V DC, see page 22)

4Contacts for operation on the LabStation

5RS232 serial interface

General operating principles pHotoFlex®pH

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Keypad Select the measuring mode

<M> (long keystroke):

–Photometry

–pH & ORP

Select the measured parameter within a

measuring mode

<M> (short keystroke):

–pH & ORP: pH, ORP

–Photometry:

Concentration, Absorbance, % Transmission

Start calibration (measuring mode pH & ORP)

Start zero adjustment or blank value

measurement via the Photometry \ Adjustment

(measuring mode, Photometry)

In the Photometry measuring mode: Select a

program for concentration measurement

<PROG>

Open menus / confirm entries /

start measurement

Call up the Configuration menu

(all settings are made here)

<MENU>

In the Photometry measuring mode, measured

parameter, Concentration

switch over between available citation forms

<FORM>

In the Photometry measuring mode, measured

parameter, Concentration

Switch over between available units <UNIT>

Switch the meter on/off

Output display contents to RS232 interface

(e.g. print)

<PRT>

Open the Store menu: <STO>

Quick storing: 2 x <STO>

PRT

pHotoFlex®pH General operating principles

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Keys with an additional number printed on are assigned doubly.

This enables to directly enter numbers in special menus. Thus, you

can, for example, conveniently enter the date and time via the number

keys.

Measured value display In the measured value display, you can

select a measuring mode with <M> (long pressure)

select a measured parameter in the active measuring mode (e. g.

pH <−> mV) with <M> (short pressure)

open the menu with <MENU>

switch to the higher Start menu with <ESC>.

Menus and dialogs The menus for settings and dialogs in procedures contain further

submenus. The selection is made with the <><>keys.

The current selection is highlighted as white text on a black

background.

Menus

The name of the menu is displayed at the upper edge of the frame.

Menus are opened by confirming with <START/ENTER>. Example:

Settings

Settings are indicated by a colon. The current setting is displayed on

the right-hand side. With <START/ENTER>, the selection of the

possible settings is opened. Subsequently, the setting can be

changed with <><>and<START/ENTER>.

Example:

Highlight menu items or selection /

set values

<>, <>

Switch to the next higher menu level /

cancel input

<ESC>

Photometry

pH & ORP

System

Info

Configuration

General operating principles pHotoFlex®pH

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Functions

Functions are designated by the name of the function. They are

immediately carried out by confirming with <START/ENTER>.

Example: display the Calibration record function

(in the pH & ORP / Calibration menu).

Messages

Information or operating instructions are indicated by the isymbol.

They cannot be selected.

Example:

Language:English

Beep:Off

Illumination:On

Contrast:48 %

Temperature unit:°C

Switchoff time:30 min

System

Calibration record

Cal. type: AutoCal

TEC

Calibration interval:007 d

Unit for slope:mV/pH

i2.00 4.01 7.00 10.01

pH & ORP

iBuffer recognition TEC

iImmerse sensor in buffer 1

Set temperature:25 °C

Continue

pH & ORP

The iindicates

info texts, e.g.

messages, notes or

instructions

pHotoFlex®pH Operation

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Initial commissioning

Switching on the meter Press the <ON/OFF> key.

For a few seconds, the Start menu appears with a selection of the

measuring modes. The measuring mode last selected is highlighted.

After a few seconds, the meter automatically switches to the measuring

mode and measured parameter used last.

Setting the language The English language is set on delivery. Set a different language as

follows:

Setting the date and

time

The date and time are set in the menu,

Configuration / System / Continue ... / Date/time.

Operation

Inserting a cell

To be able to insert cells in the pHotoFlex®pH, the cell shaft has to be

prepared to take in a cell.

1Open the Configuration menu with the <MENU> key.

2 Open the Configuration / System / Language menu with the

<><>and <START/ENTER> keys.

3Select the required language with the <><>keys and

confirm with <START/ENTER>.

4 Quit the menu with the <M> key.

1Push the dust cover (1) upward.

The cell shaft for 28 mm cells is open.

Insert a 28 mm cell (see below)

Insert a 16 mm cell (see page 10)

Operation pHotoFlex®pH

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Inserting a 28 mm cell

Inserting a 16 mm cell

2Insert the cell so that it is positioned on the bottom of the cell

shaft.

The cell is ready to be measured.

1Put the fold-out cell shaft (2) in an upright position until it locks

into place.

2Pull up the height adapter (3).

The cell shaft is extended.

3Open the external light cover (4) of the cell shaft.

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