Delta OHM HD 98569 User Manual

Our instruments' quality level is the results of the product continuous development. This can bring about differences between the information written in this manual and the instrument that you have purchased. We cannot entirely exclude errors in the manual, for which we apologize. The data, figures and descriptions contained in this manual cannot be legally asserted. We reserve the right to make changes and corrections without prior notice.

HD 98569

ENGLISH

REV. 1.1

22/01/2013

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HD 98569

pH – Conductivity – Dissolved Oxygen – Temperature

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1. 8-pole DIN45326 connector, input for dissolved Oxygen and temperature combined probes with SICRAM module, or temperature only Pt100 probes with SICRAM module.

2. 8-pole DIN45326 connector, for combined pH/mV/temperature electrodes with SICRAM module, or temperature only Pt100 probes with SICRAM module.

3. Function key F1: The key’s function is described in the bottom line of the display. In standard

measurement mode, if you press it repeatedly, it toggles the unit of measurement of the SICRAM pH probe connected to the left input, between pH, mV, or no indication.

4. Function key F2: The key’s function is described in the bottom line of the display. In standard

measurement mode, if you press it repeatedly, it toggles the unit of measurement of the dissolved Oxygen probe connected to the central input, between Oxygen concentration in liquids (mg/l), saturation index (%), or no indication in absence of the connected probe.

5. MEAS (measurement) key: It allows to repeat the measurement, when the EPT = AUTO, MAN

or TIME modes are selected (see the EPT function description on page 5). It also returns to the standard display.

6. EPT (End PoinT) key: It selects the unit of measurement. The EPT, MAN, TIME, and AUTO

modes are available (see the EPT function description on page 5).

7. LOG key: It starts and ends the saving of data in the internal memory.

8. PRINT key: It prints the data on the current screen. It uses the serial communication port

RS232C, the USB 2.0 port, or, if any, the Bluetooth connection.

9. MEM key: It stores the currently displayed screen.

10. ESC key: In the menu, it cancels the operation in progress without making changes.

11. ENTER key: In the menu, it confirms the current selection.

12.  key: In the menu, it moves the cursor leftwards. During measurement, it decreases the display contrast.

13. HELP key: It shows a description of the instrument main functions on the display.

14. Power supply input 12Vdc for the ∅5.5mm - ∅2.1mm connector. Positive at centre.

15. 8-pole female MiniDin, serial RS232C and USB1.1-2.0 multiport connector.

16. MENU key: It allows access to the menu.

17.  key: In the menu, it decreases the current value.

18.  key: In the menu, it moves the cursor rightwards. During measurement, it increases the display contrast.

19. DI SP key: It gives the main parameters of the probes connected to the instrument, the

barometric pressure measured by the internal pressure sensor, the next memory positions MEM and ID, current date and time.

20.  key: In the menu, it increases the current value.

21. °C/°F key: If the temperature sensor is present, the key toggles the unit of measurement

between °C and °F. If no temperature or combined temperature probes are present, the key allows manual input of the temperature value used for temperature compensation and selection of the unit of measurement (°C or °F). See also the description of the ATC/MTC feature.

22. CAL key: It starts the pH electrode, conductivity probe or dissolved Oxygen probe calibration

procedure.

23. ID key: It allows to set the sample identifier number.

24. ON-OFF key: It turns the instrument on and off.

25. Function key F3: The key’s function is described in the bottom line of the display. In standard

measurement mode, if you press it repeatedly, it toggles the unit of measurement of the conductivity probe connected to the right input, between conductivity, resistivity, TDS, NaCl concentration, or no indication.

26. Description of the F1, F2, F3 function keys:

27. Instrument display. The display is backlit: To enable or disable the backlight, select the menu item Menu >> System Parameters >> Backlight. Use the arrows to modify the display contrast.

28. 8-pole DIN45326 connector, input for combined 4-ring or 2-ring conductivity/temperature probes complete with SICRAM module (the conductivity input is not compatible with the temperature probes with SICRAM module).

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Introduction

The HD 98569 is a multiparameter portable instrument and datalogger for electrochemical measurements: pH, conductivity, dissolved Oxygen and temperature. It is fitted with a large

backlit LCD display.

The instrument measures:

• pH, mV, redox potential (ORP) using pH, redox electrodes or combined pH/temperature

probes complete with SICRAM module;

• conductivity, liqu id r e s ist iv it y, total d i sso l ve d sol ids (TDS) and salinity using combined 4-

ring and 2-ring conductivity/temperature probes with SICRAM module;

• concentration of dissolved Oxygen in liquids (in mg/l), saturation index (in %) and

temperature using SICRAM combined probes of polarographic, with two or three electrodes, and galvanic type with integrated temperature sensor.

The immersion, penetration, or contact Pt100 temperature probes with SICRAM module can be

connected to the instrument.

• The pH electrode calibration can be carried out on a minimum of one to a maximum of five

points, and the calibration sequence can be chosen from a list of 8 buffers. The

temperature compensation can be automatic or manual.

• The calibration of the conductivity probe can be automatic, by recognition of standard solutions:

147μS/cm, 1413μS/cm, 12880μS/cm, 111800μS/cm or manual with different solutions.

• The dissolved Oxygen probe's quick calibration function guarantees timely accuracy of the

performed measurements.

• The pH, conductivity, dissolved Oxygen and temperature probes are fitted with a SICRAM

module, with the factory calibration settings already being memorized inside.

The HD 98569 is a datalogger. It stores up to 2000 single screens (labels) and up to 9000

samples in continuous recording of: pH or mV, conductivity or resistivity or TDS or salinity,

dissolved Oxygen concentration, saturation index, and temperature.

The data can be transferred from the instrument connected to a PC via the multistandard RS232C

serial port or the USB 2.0-1.1 port.

If equipped with the Bluetooth HD22BT option, the HD 98569 can send the data to a PC fitted with

the USB/Bluetooth HD USB.KL1 converter, to a printer with a Bluetooth HD40.2 interface, or to a

PC fitted with a Bluetooth input, without the need of any connection.

The RS232C serial connection can be used for direct printing of the labels using a 24 column

printer (HD40.1 or HD40.2).

The DeltaLog11 dedicated software (vers. 2.0 and later) allows management and configuration of

the instrument, and data processing on the PC.

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Display Description

When you turn the instrument on the display appears as in the figure.

The display is backlit: To enable or disable the backlight, select the menu item Menu >> System Parameters >> Backlight.

You can adjust the contrast level: Use the  arrows to modify it.

The display is laid out as described below:

1. Battery symbol: It indicates the battery level.

2. EPT symbol: The EPT (End PoinT) symbol indicates the display mode. The mode selection is

done using the EPT key. Until the EPT is blinking, the measurement is updated on the

display; when it is fixed, the measurement is “frozen”. For a new measurement, press MEAS.

EPT = DIR: The instrument operates in continuous view mode. In this mode the displayed

measurement is updated every second (standard mode).

EPT = MAN: The displayed measurement is continuously updated until MEAS is pressed.

During the measurement update, the MAN symbol is blinking. For a new measurement, press MEAS.

EPT = TIME: The measurement is frozen after a set time of 8 seconds. For a new

measurement, press MEAS.

EPT = AUTO: The instrument performs the measurement, and when it stabilizes the AUTO

symbol stops blinking. For a new measurement, press MEAS.

In the following figure you can see an example of the measurement process with the EPT AUTO function enabled. After setting the EPT = AUTO function using the EPT key, the

electrode is immersed into a liquid. To perform the measurement, press MEAS. the AUTO

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symbol blinks to indicate that the measurement is in the stabilization phase. In the position indicated by point 1, the measurement remains within a predefined stability range for 8 seconds. At the end of this interval (point 2), the instrument freezes the measurement, and shows a stable value. The AUTO symbol stops blinking.

For a new measurement, press MEAS.

2 digit

10s

The reference stability range has a span of 2 digits. When recording is started (Logging), the EPT function switches automatically to DIR.

3. pH/mV: It reports the pH or mV value measured by the SICRAM pH probe connected to the left

input. The measurement indication blinks if the pH/mV probe is not calibrated or if the calibration was unsuccessful (please see the DISP key description on page 9).

4. Conductivity: It reports the conductivity, resistivity, TDS, NaCl concentration value measured

by the conductivity probe with SICRAM module connected to the right input. The measurement indication blinks if the conductivity probe is not calibrated or if the calibration was unsuccessful (please see the DISP key description on page 9).

5. Func tion keys line: The bottom line is associated to the F1, F2, F3 function keys. Please see

the details in the keyboard’s description on page 6.

6. Dissolved Oxygen: It reports the dissolved Oxygen concentration value (mg/l) or saturation

index (%) measured by the dissolved Oxygen probe with SICRAM module connected to the central input. The measurement indication blinks if the dissolved Oxygen probe is not calibrated or if the calibration was unsuccessful (please see the DISP key description on page 9).

7. T emperature used to compensate the pH, conductivity and dissolved Oxygen measurements.

For the details see the paragraph dedicated to temperature on page 33.

8. ATC or MTC indicate the temperature compensation type being used.

ATC means automatic compensation: If the temperature probe is present, compensation is

carried out according to this probe, or according to the temperature detected by a combined

probe, if present. In this case, you cannot modify the manually input tempera ture value.

For the details see the paragraph dedicated to temperature on page 33.

MTC means manual compensation: There are no temperature sensors; the temperature used for compensation is typed using the keyboard. Press the °C/°F key once to modify its value:

The temperature indication blinks. Use the  and  arrows to set the desired value and confirm with ENTER. The display stops blinking, and the temperature displayed is used for compensation.

If the temperature probe is not present, in order to change the unit of measurement between

°C and °F, it is necessary to press the °C/°F key t wice.

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Keyboard description

Each key specific function is described in detail below.

ON-OFF key

The instrument is turned on using the ON/OFF key. Press this key for at least two seconds.

When pressing ON-OFF again the instrument is turned off.

The turning on starts a self test including the detection of the probes connected to the inputs. As

the probes’ identification and calibration data are captured upon turning the instrument on, it is necessary to connect the probes when the instrument is off. If a probe is connected and the instrument is on, nothing is shown on the display: it is necessary to turn the instrument off and on.

Finally, the instrument is set for normal measurement.

Once turned off, wait few seconds before turning it on to allow completion of the shut down

routine.

MEAS key

The key allows to perform or repeat a new measurement, when the EPT = AUTO, MAN or TIME modes are selected (see the EPT function description on page 5). It returns the instrument display to the standard measurement mode, after pressing the MEM and DISP keys.

EPT key

The key selects the measurement performance mode. By pressing the EPT key, you can select the

DIR, MAN, TIME or AUTO modes in this order (see the EPT function description on page 5).

CAL key

It starts the pH, conductivity or dissolved Oxygen probes calibration procedure (see the chapter dedicated to calibration on page 21).

ID key

This key allows to input the value of the first sample ID associated with the PRINT and MEM function. Use the  and  arrows to select the value to be modified, and set the desired value using the  and  arrows. Modify the other values in the same way. At the end, confirm with ENTER. The ID is an automatically increased progressive number. The identifier is indicated in the printout and in the recorded samples together with the date, time and measured values. This parameter can be modified only by the administrator (see page 17). If the EPT option is set to DIR (see the EPT key in this chapter), each time the PRINT or MEM key

is pressed, the ID is increased by 1.

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If the EPT option is set to Auto, Man or Time, pressing PRINT only causes the print to occur when the measurement has stabilized (EPT symbol still); until the measurement is frozen, it is possible to repeat the print at will, but the sample identifier number is not increased. This is useful when more labels concerning a single measurement must be printed with the same identification code, without increasing the code each time.

LOG key

It starts and stops the logging of a data block to be saved in the instrument's internal memory. The

data logging frequency is set in the “System Parameters >> Memory and Logging >> Log Interval”

menu parameter. The data logged between a start and subsequent stop represent a data block. When the logging function is on, the “NOW LOGGING!” indication and the time elapsed since the recording beginning are displayed. To end the logging, press LOG. For the details see the chapter dedicated to recording on page 49.

°C/°F key

If a temperature sensor is present (temperature probe or combined probe with integrated temperature sensor), the key changes the unit of measurement between °C and °F. If no temperature or combined temperature probes are present, the key allows manual input of the temperature value used for temperature compensation and selection of the unit of measurement (°C or °F). See also the description of the EPT key.

PRINT key

It sends the displayed data to the serial RS232C or USB output as a label formatted across 24 columns.

If EPT = DIR, the ID is increased by 1 (see page 7).

Before starting the communication via the RS232C serial port, set the baud rate according to the connected device.

• For the connection to a PC’s RS232 port, select the “System Parameters >> RS232 Baud Rate”

menu item, and select the maximum value equal to 38400 baud by using the arrows  and . Confirm by pressing ENTER. The DeltaLog11 software (vers. 2.0 and later) for PC will automatically set the baud rate value

during connection by reading it on the instrument. If you are using a different program than

DeltaLog11, be sure the ba ud rate is the same for both the instrument and the PC: the communica t ion will only wo rk in th is way.

• For the connection to a PC’s USB port, please see the connection details on chapter 46.

• For the direct connection to a serial printer (e.g. HD40.1 or HD40.2), set the recommended baud

rate for the printer. See the details on page 50.

Note: The PRINT key can also print the data contained in the instrument's memory: Select the

data to be printed using the MEM key and press PRINT to print it.

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MEM key

It manages the single data storage. For continuous recording use the LOG key. By pressing MEM you will enable the F1= STOR, F2=CLR and F3=VIEW commands.

F1=STOR stores the current screen. Before enabling the MEM function, you can select (using the

F1=pH/mV, F2=O

and F3=cond function keys) the variable to be stored: pH or mV, conductivity, resistivity, TDS or NaCl, dissolved Oxygen concentration, or saturation index; using the °C/°F key, the temperature in °C or °F. The units of measurements of the logged samples are the same as those used on the display during recording.

F2=CLR allows clearing of the memory part dedicated to the single records stored using the MEM

>> F1 = STOR key. The message “CLEAR ALL?” is displayed: Press F3=YES to clear, F1=NO to cancel the operation.

F3=VIEW displays the logged data: F1=PREV goes to the previous sample, F3=NEXT to the next

one. The displayed sample is indicated as “M:####”, where #### is the current sample progressive

number. To print the current data, press the PRINT key.

To return to the standard view, press MEAS.

For the details see the chapter dedicated to recording on page 49.

DISP key

The feature reports useful information on the instrument and connected probes functioning. From top to bottom there are:

• Barometric pressure, measured by an internal pressure sensor,

• Temperature compensation type (ATC or MTC),

• Temperature compensation,

• Calibration information on the connected probes.

For the pH probe the symbol shows an electrode that gets “empty” as its efficiency decreases. If the pH probe is not calibrated, the CAL blinking message appears.

For the dissolved Oxygen probe, the calibration coefficient (SLOPE) is reported: this value must be between 0.500 and 1.500. A value close to 1.500 indicates an exhausted probe.

For the conductivity probe, the cell constant nominal value is shown. It has up to 4 different

calibration points and nominal cell constant corrections. The displaye d value is refe rred to the calibration point at 1413μS/cm.

The memory position MEM progressive number and the identification code will follow (please see the ID key description). In the bottom line we have the current date and time.

If a pH, conductivity or dissolved Oxygen probe has not been calibrated by the user or if the calibration was unsuccessful, the measurement indication in the main page will blink to notify the problem: By pressing DISP, you can check the type of problem occurred.

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Up Arr o w

in the menu, it increases the current value.

ESC key

In the menu, the key clears or cancels the active function.

Right Arrow

In the menu, it moves the cursor rightwards. During measurement, it increases the display

contrast.

ENTER key

In the menu, the ENTER key confirms the current parameter.

Left Arrow

In the menu, it moves the cursor leftwards. During measurement, it decreases the display contrast.

MENU key

Using this button the instrument’s menu can be accessed. See a detailed description on page 11.

Down Arrow

In the menu, it decreases the current value.

HELP key

It displays a short help on the instrument’s main functions. Press ESC to go back to standard measurement. Use the  and arrows, to browse the HELP items. To display an item, press ENTER.

…

Function keys F1 … F3

The function of the F1, F2, F3 keys is described by the message near each key in the bottom line of the display.

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Menu description

The MENU key is used to access the menu main screen. To select one item, use the arrow keys ( and ). The selected item has a white text on a black background.

INFO / STATUS / HELP

User Options System Parameters pH Options Conductivity Options Diss. Oxygen Options UP/DOWN/ENTER or ESC

Press ENTER to access the selected item. Use the  and  arrows to browse the submenus and modify the single parameters. Press ENTER to confirm the value of the selected parameter, press ESC to cancel the operation: In both cases, you return to the initial menu. Press ESC to return to the main menu from a submenu, and to exit the main menu and return to measurement mode. Note: Some menu parameters can be changed only by an user registered as “Administrator” (see the details on page 17).

Language selection

The menu items are in 4 languages: Italian, English, French and Spanish. To select the language, press MENU, use the  and  arrows to select User Options >> User Registration and select the language using the MENU key. Press ESC to confirm and return to measurement mode.

The menu items are listed in this order:

1. “INFO / STATUS / HELP”

1.1. “Instrument Info” shows some information on the instrument: model, types of

measurement, firmware version, serial number and calibration date.

1.2. “Instrument Status” reports the last enabled user, the current type and status of

communication interface, the temperature compensation mode and the temperature sensor used for compensation.

1.3. “Short Manual”. It is a short help showing the instrument main functions.

2. “USER OPTIONS”

2.1. “Logged=Admin” displays the currently registered user (see the next point)

2.2. “User Log-in” selects the language among Italian, English, French or Spanish and/or the current user type. See the details on page 17.

2.3. “User Password” allows to create and/or edit the password associated to each

registered user: Administrator, User_1, User_2 and User_3. See the details on page

17.

2.4. “User Logoff option”: When you turn the instrument on you can get:

A) The user of the previous session without requiring a password (“Recall User”), B) Require a user (“Request New User”): in this case, you have to select the user and, if not “Anonymous”, enter the password. This parameter can be modified only by the

administrator (see page 17).

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3. “SYSTEM PARAMETERS”

3.1. “Date and Time” manages the instrument date and time setting. Use the  and 

arrows to move the cursor, and the  and  arrows to edit the selected value. The MENU key clears the seconds to synchronize them to the minute: Use the



and



arrows to set the current minute plus one, and as soon as that minute is reached press MENU. This synchronizes the time to the second. Press ENTER to confirm, ESC to exit without making changes.

3.2. “Memory and Logging” is composed of five sub-functions:

3.2.1. “Log Interval”: It sets the interval in seconds between two loggings. The interval

can be set from 0 to 999 seconds. If the value 0 is set, the logging is disabled. Press LOG to start the logging, press LOG again to end.

3.2.2. “Sing le Memo ry Mo de”: It selects the instrument memory management mode. It

applies only to the single record (MEM key): The continuous recording (LOG key) stops when the available memory space is full.

 By setting it to “0” you select the standard mode (normal): When the memory

is full, the logging stops; to carry out further recordings, you should download the data, if necessary, and clear them.

 By setting it to “1” you select the circular mode (“endless loop”): When the

memory is full, it starts to overwrite the oldest data. Recording is not interrupted. The logging mode can be selected or modified only by the

administrator (see page 17).

3.2.3. “Memory on Print opt.”:

 If you select “0”, when using PRINT the current data is sent to the printer but

is not saved in the memory.

 If you select “1”, when using PRINT the current data is sent to the printer and

also saved in the memory.

This parameter can be selected only by the administrator (see page 17).

3.2.4. “Clear Log” allows to permanently clear all the data stored in the memory using

the LOG key. Press ENTER to confirm, ESC to exit without clearing the memory.

3.2.5. “Print Log” sends all the data contained in the continuous memory to the device

connected to the serial port. The continuous recording data (using the LOG key)

are formatted across 80 columns: They cannot be printed on the HD40.1 or HD40.2 portable printer. This command allows, for example, to send the data

to the HyperTerminal software. The DeltaLog11 software (vers. 2.0 and later) manages the data transfer and the printing from the PC, and does not require the use of this command.

3.3. “RS232 Baud Rate”. This function allows selection of the frequency used for the serial

RS232 communication with the PC. Values from 1200 to 38400 baud. Use the  and

 arrows to select the parameter and confirm with ENTER. The communication between instrument and PC (or serial port printer) only works if the instrument and PC or printer baud rates are the same. If the USB connection is used this

parameter value is automatically set (please see the details on page 49).

3.4. “Electrode Serial Numbers”. It identifies the serial numbers of the SICRAM probes

connected to the instrument inputs. These serial numbers are reported in the printouts and stored data. The SICRAM pH, conductivity and dissolved Oxygen probes report the “service hours”, that is, the number of hours that the probe has been connected to the functioning instrument. This parameter is saved in the SICRAM memory and cannot be modified.

3.5. “System Reset”: It is formed by two sub-functions:

3.5.1. “Partial Reset”: The partial reset restores the instrument functioning without

modifying the menu settings such as, Baud Rate, log interval, date and time…

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The data in the memory are not cleared. This operation can be carried out only

by the administrator (see page 17).

3.5.2. “Complete Reset”: The complete system reset restores the instrument to the

original factory conditions, restoring all menu parameters. After a complete reset, the date, time, baud rate, log interval... must be set again. The data in the memory are not cleared. This operation can be carried out only by the

administrator (see page 17).

3.6. “Backlight”. It enables or disables the display backlight. Use the arrows  e , press

ESC to exit.

3.7. “Bluetooth Parameters” is displayed by the instruments fitted with the Bluetooth

HD22BT module. It is formed by three sub-functions:

3.7.1. “Disable Bluetooth module”: Select this item using the  and 

arrows and

confirm with ENTER to disable the Bluetooth device. This function allows using the COM serial port or the USB port.

3.7.2. “Bluetooth Connection to a PC” sets the instrument for connection to a PC fitted

with a Bluetooth interface or Bluetooth “HD USB.KL1” module. When exiting the menu, the “BT” symbol blinks up on the left side of display to indicate that the instrument is ready for connection using the DeltaLog11 software (vers. 2.0 and later). The instrument waits a connection for 10 minutes, then shows an error alternating “BT” and “ERR”. For the details, see the chapter dedicated to PC

connection on page 46.

3.7.3. “Bluetooth Connection to a Printer” sets the instrument for connection to the

HD40.2 printer fitted with a Bluetooth module. Turn on the printer, select “Bluetooth Connection to a Printer” using the  and 

arrows, and confirm

with ENTER. The instrument searches for all functioning Bluetooth devices and lists them on the display. Use the  and  arrows to select the HD40.2 printer and confirm with ENTER. When pressing PRINT the data are sent to the Bluetooth printer.

4. “pH OPTIONS”

4.1. “pH Resolution” selects the number of leading digits for the pH measurement: using the

 and  arrows select 7.12 to obtain the pH hundredths or 7.123 to obtain the thousandths. The chosen resolution is applied to the new logged measurements, while the previous choice still applies for the already memorized ones.

4.2. “pH Buffer Solutions”: The instruments allows selecting up to 5 buffers for the pH

electrode calibration. Select the buffer BUFFER1, …, BUFFER5 to be modified using the  and  arrows, and confirm with ENTER.

Select BUFFER to be changed, or ESC

Buffer1 = 1.679 Buffer2 = 4.010 Buffer3 = 6.860 Buffer4 = 9.180 Buffer5 = 10.010

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In the next table, select the value to be assigned to the chosen buffer.

You can select one of the 8 buffers in the memory, enter a user defined CUSTOM buffer, or exclude one from the list by selecting NIL. The 8 buffers in the memory are compensated for temperature, but the buffer defined by the user is not compensated for temperature: So the buffer value must be set at the actual solution temperature. As an alternative, the correct value according to temperature can be set in the calibration

phase. Please see the chapter dedicated to calibration on page 21.

4.3. “pH Electrode History”: The last eight calibrations can be stored in the instrument

memory. The data are associated to the SICRAM probe serial number: The “Show on Display” submenu displays the following items: date, time, operator that carried out the calibration, calibration points (pH, mV and temperature detected). The last 8 calibration information are shown: offset, slope and the symbol indicating the pH electrode

efficiency after calibration. Use the  and  arrows to browse the last 8 calibrations.

Use the “Print” function to print these information.

4.4. “pH Calibration Expiration”: It is possible to set the pH electrode calibration validity

number of days. When the validity period has expired, the measurement is blinking on the display and by pressing the DISP key the “CAL” blinking message appears; the calibration data can still be used. The “Expired calibration” message is indicated in the printout. Enter “Number of days” = 0 to disable this feature.

Note: The day is counted at midnight: By entering 1, at midnight of the same day, the calibration is considered expired.

This operation can be carried out only by the administrator (see page 17).

4.5. “Reset pH History”: This function clears the pH electrode calibration information in the

memory (see “pH Electrode History” above). Press ENTER to erase, ESC to exit without erasing.

This operation can be carried out only by the administrator (see page 17).

4.6. “Advanced Settings” groups some advanced functions concerning the pH

measurement.

4.6.1. “Set Antimony Electrode”: This function allows using an antimony electrode for

pH measurement and to perform its calibration with the standard calibration

solutions. To enable it, select YES and confirm with ENTER. Select NO and confirm with ENTER, to exit without making changes. To modify the “Iso pH”

parameters and offsets, please see the following.

4.6.2. “Isotherm pH Point” is expressed in pH units: Use the arrows to set its value

between 0pH and 14pH, and confirm with ENTER. If the parameter is expressed in mV instead of pH, use the following formula to obtain the corresponding value in pH:

59.16

7pH_ISO −=

4.6.3. “Initial Offset” is the electrode zero point expressed in mV: Use the arrows to set

the corresponding value between -500mV and +500mV, and confirm with ENTER.

1.679 4.000 4.010

6.860 7.000 7.648

9.180 10.010 NIL CUSTOM

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4.6.4. “Reset Std. glass electrode”: It restores the standard pH measurement

functioning and disables the special electrode measurement correction.

Note: The “Set Antimony Electrode” function activation or the modification of the submenu items, will erase the current calibration. When exiting the menu, you should perform a new calibration.

5. “CONDUCTIVITY OPTIONS”

5.1. “Cond. ALFA Coefficient” (α

): The temperature coefficient α

is the percentage measurement of the conductivity variation according to temperature and is expressed in %/°C (or %/°F). The coefficient may vary from 0.00 to 4.00%/°C. Use the arrows ( and ) to set the desired coefficient, and confirm with ENTER.

5.2. “Reference Temperature”: It indicates the temperature to which the displayed

conductivity value is standardized. The values vary from 0 to 50°C. Usually the values of 20°C or 25°C are used. Use the arrows ( and ) to set the desired value, and

confirm with ENTER.

5.3. “Conductivity TDS”: It represents the

/TDS conversion factor, that is, the ratio between the measured conductivity value and the total quantity of dissolved solids in the solution, expressed in mg/l (ppm) or g/l (ppt). This conversion factor

depends on the nature of the salts present in the solution. In the field of water quality treatment and control, the main component is CaCO

(Calcium Carbonate). For this solution, a value of 0.5 is usually used. In agriculture, for fertilizer water preparation, and in hydroponics, a factor of about 0.7 is used. Using the arrows ( and ), set the desired value, selecting it in the 0.4…0.8 range, and confirm with ENTER.

6. “DI SSOL VED OXYGEN OPTION S”

6.1. “View Oxy History”: The dissolved Oxygen probe SICRAM module stores the last eight

calibrations in the memory. This menu item displays each calibration date and slope.

The “Print Oxygen History” function, gives the date, slope and temperature per each

calibration.

6.2. “Oxy Calibrat ion validity”: It is possible to set the dissolved Oxygen probe calibration

validity number of days. When the validity period has expired, the measurement is blinking on the display and by pressing the DISP key the “CAL” blinking message appears; the calibration data can still be used. The “Expired calibration” message is indicated in the printout. Enter “Number of days” = 0 to disable this feature. Note: The day is counted at midnight: By entering 1, at midnight of the same day, the calibration is considered expired.

This operation can be carried out only by the administrator (see page 17).

6.3. “Reset Calibration History”: This function clears the dissolved Oxygen probe calibration

information (see “Dissolved Oxygen Probe Calibration History” above). Press ENTER to erase, ESC to exit without erasing.

This operation can be carried out only by the administrator (see page 17).

6.4. “Salinity Correction”: Enter the measured liquid salinity. Use the  and  arrows to set

the value expressed in g/l, and confirm with ENTER. To disable the salinity compensation, set the value to zero.

Note: The dissolved Oxygen concentration depends on the measured liquid salinity. In contrast, salinity has no effect on the saturation index.

6.5. “Automatic Salinity Correction”: The salinity value is measured directly by the

instrument, if a conductivity probe is connected and immersed in the measured liquid. Select “0” to manually set the correction using the “Manual Setting of the Salinity” menu item, select “1” to enable automatic correction.

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Instrument Identifier Code

The instrument can be identified using a code appearing in the printouts and in the stored data. This code is managed (creation, editing, erasing...) using the DeltaLog11 software (vers. 2.0 and

later) and this can be performed only by the administrator (see page 17).

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User Management

The user must identify himself or herself by entering a user name and password: The registered user name is shown in all performed operations: Printing, logging, calibration...

The available users are: Administrator, user_1, user_2, user_3 and anonymous us e r. The different users have different usage levels: The Administrator is enabled to use all of the instrument

functions and assigns the password to the other users. The three users and the anonymous can access only part of the functions.

Settings

The user management options are stored in the “USER OPTIONS” menu item.

When the instrument comes out of the factory, the only user stored is the administrator. The

password is “00000000”: The “Menu >> User Options >> User Password” function allows

modification of the administrator password. To enable the user_1, user_2 and user_3, you must assign a different password (not “00000000”), using the “User Password” function. In order to do that:

1. Select the menu item “Menu >> User Options >> User Password”.

2. Select the desired user (e.g. User_1) using the  arrows, and confirm with ENTER.

3. Type the old password (“00000000” in a new instrument), and confirm with ENTER.

4. Type the new password (not “00000000”), and confirm with ENTER.

5. Select “Menu >> User Options >> User Registration” using the  arrows, and select the new user to which you have just assigned a password.

6. Type the password, and confirm with ENTER.

Now the User_1 is enabled and can use the instrument: The printed and stored information will show “Operator = User_1”.

Note: The passwords beginning with 27 (27000000 to 27999999) are reserved and you cannot use them.

Access modes

If you wish the instrument to request the user selection and relevant password upon turning on, set “Menu >> User Options >> User Exit Mode = Request New User”. When you turn the instrument on you get all the users: Select the user using the  arrows, and type its password. Confirm by pressing ENTER. The anonymous user does not need a password.

If you select “Recall User”, the instrument uses the previous user without requiring a password. In this case, use the “User Registration” menu item to change the user (see points 5 and 6 above).

Note: The access mode can be modified only by the administrator.

- - 18

Functions reserved to the administrator

Some functions are reserved to the user registered as "Administrator" (see the details on page 11).

Only the Administrator can:

• Modify the instrument identifier with the DeltaLog11 software (vers. 2.0 and later),

• Perform the instrument partial and total reset,

• Set the user access mode with or without password prompting (“User Exit Mode”),

• Selects the instrument memory management mode (“Single Memory Mode”),

• Set the storage mode when using the PRINT key (“Print Memory Mode”),

• Clear the calibration history (“Clear Calibration History”),

• Set the pH and dissolved Oxygen calibration interval (“pH Calibration Expiration” and

“Dissolved Oxygen Calibration Expiration”),

• Modify the ID sample value (ID key),

• Clear the memory content.

- - 19

pH measurement

The HD 98569 instrument works with combined pH/temperature probes complete with SICRAM module, pH measurement electrodes, redox potential measurement electrodes (ORP), and specific ion electrodes combined with the SICRAM KP471 module. To switch from pH to mV and vice versa, press the F1= pH/mV function key.

The pH measurement is generally accompanied by the temperature measurement for the automatic compensation of the pH electrode Nernst coefficient. The SICRAM combined pH/temperature probes are fitted with Pt100 temperature sensor.

The SICRAM KP471 module is provided for the connection of a pH electrode. For a pH measurement compensated for according to temperature, the instrument requires a temperature probe to be connected to the O

input. As an alternative, the compensation temperature value for

the solution being measured can be entered manually.

If a temperature only probe is connected to the instrument, it has priority on the temperature supplied by any combined probe: Please see the chapter dedicated to temperature measurement

on page 33.

pH SICRAM probes

The SICRAM pH probe is formed by a pH electrode, a Pt100 temperature sensor located inside the probe, and an electronic module. The module has a memory circuit that enables the instrument to recognize the type of probe connected. It stores also the serial number, the factory calibration of the Pt100 sensor, the manufacturing date and the parameters of the last two pH calibration performed by the user.

The instrument stores the last eight pH calibrations performed by the user: The last two calibration are stored in the probe’s SICRAM memory. Upon power on, the instrument reads the two calibrations in the probe and, if the probe was calibrated on the same instrument, they are added to the ones already stored in the instrument in order to make up the history calibration of the SICRAM pH probe. If the SICRAM pH probe is connected to a different instrument, only the parameters in the probe memory will make up the calibration history.

Module pH SICRAM KP471

The KP471 module is a SICRAM type interface for pH electrodes with S7 connector. Three different cable lengths are available: 1m (code KP471.1), 2m (code KP471.2) and 5m (code KP471.5). By using this module you can add all of the advantages of a SICRAM probe to a pH electrode: For example, you can move the module with the electrode from an instrument to another instrument, without performing a new calibration.

The module is automatically recognized by the instrument when you turn it on, and the serial number and parameters described above are read.

You just need to connect the electrode to the KP471 module S7 connector, connect the module to the pH input, and turn the instrument on. Perform a first calibration on two or more points. One must be in the neutral band (e.g. 6.86pH). The module is now ready for use.

Of course, once the calibration is performed, the electrode linked to the module should not be changed: As the electrode calibration information are saved in the module, this will generate measurement errors. When you replace the electrode you should do a new calibration.

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The electrode for pH measurement

The electrode for pH measurement, generally in glass, generates an electrical signal proportional to the pH according to Nernst law. Of this signal the following aspects are considered:

Zero point: The pH where the electrode generates a potential of 0 mV. In most electrodes, this

value is found at about 7 pH.

Offset or Asymmetry Potential: mV generated by an electrode when immersed in a buffer solution

at 7pH. Generally oscillates between ± 20 mV.

Slope: Response of the electrode expressed in mV per pH units. The theoretical electrode slope at

25°C is 59.16 mV/pH. When the electrode is new the slope is close to the theoretical value.

Sensitivity: It is the electrode's slope expression in relative terms. It is obtained by dividing the

actual value of the slope by the theoretical value, and is expressed as a %. The asymmetry potential and the slope vary in time with the use of the electrode, which necessitates regular calibration.

The pH electrodes must be calibrated using the standard solutions (see the calibration chapter

below). The ORP and specific ion electrodes do not need calibration. The standard redox

solutions are only used to check the quality of a redox electrode. User calibration of the temperature sensor is not re quired: The sensor is calibrated in the factory and the Callendar Van Dusen parameters are recorded in the SICRAM module.

The probes are detected during turn on, and this cannot be pe rformed when the instrument is already on, therefore if a probe is connected and the instrument is on, it is necessary to turn it off and on.

Automatic or manual temperature compensation for pH measurement

The pH measurement is influenced by the measured solution temperature. The electrode slope varies according to the temperature in a known mode according to Nernst law:

e.g., a 1pH variation, that at 25°C means 59.16mV, at 100°C means 74.04mV.

6pH 7pH

8pH

74.04mV

-74.04mV

59.16mV

-59.16mV

54.20mV

-54.20mV

0mV

T=100°C, 74.04mV/pH

T=25°C, 59.16mV/pH

T=0°C, 54.20mV/pH

When a temperature probe is present (temperature only probe, combined pH/temperature probe, conductivity/temperature probe, or dissolved Oxygen/temperature probe), the instrument

automatically applies the ATC (Automatic Temperature Compensation) function. In absence of the temperature probe or sensor, the lower display shows the MTC (Manual

Compensation Temperature). If the correct value is not entered manually, the extent of the error committed in pH measurement is proportional to temperature and measured liquid pH value itself. This occurs, for example with

- - 21

the KP471 module, if no temperature probe or combined probe with temperature sensor is also connected.

In MTC mode, in order to manually change the compensation temperature press °C/°F once: The indicated temperature value starts blinking. Select the desired temperature value by using the  and  arrows, and confirm with ENTER. The display stops blinking, and the temperature displayed

is used for compensation.

During manual compensation, in order to change the unit of measurement between °C and °F, it is necessary to press the °C/°F key twice.

pH electrode calibration

The electrode calibration is used to compensate the asymmetry potential and slope departures to which the electrode is subject with time. The calibration frequency depends on the accuracy desired by the user and on the effects that the measured samples have on the electrode. Generally, we recommend daily calibration, but it is the user's responsibility from personal experience, to establish the most appropriate frequency. The calibration may be carried out using one or more points (up to 5): when using 1 point, the electrode offset is corrected, with 2 points the offset and the gain is corrected.

The instrument has a memory of 8 buffers with relevant temperature compensation tables (ATC) plus a “CUSTOM” buffer, not compensated for temperature. The five buffers can be selected by

using the BUFFER_1, …, BUFFER_5 menu items. Usually two for the acid, one for the neutral,

and two for the alkaline band will be selected:

@25°C

BUFR_1 (NEUTRAL)

6.860

7.000 7.648

BUFR_2 (ACID) 1.679 4.000

4.010

BUFR_3 (ALKALINE)

9.180

10.010

If no electrode calibration was carried out on the instrument, or the last calibration failed, or the calibration validity period has expired, the measurement is blinking on the display and by pressing

the DISP key the CAL blinking message appears.

Calibration procedure

1. Select the buffer to be calibrated in the “pH Options” >> “pH Buffer Solutions” menu item

(please see the menu description on page 11). This operation must be performed only the first

time or when the normal calibration buffers are changed.

2. Dip the SICRAM pH/temperature probe or the electrode linked to the KP471 module to be calibrated and the temperature probe in the buffer selected for calibration. If no temperature probe is available, use a thermometer and enter the value manually as indicated in the paragraph “Automatic or Manual pH Compensation”.

3. The electrode calibration mode is started by pressing CAL followed by F1=pH.

4. The page shown in the figure will appear: From top to bottom there are:

• The pH measurement value with the current calibration (7.015pH in the example)

• The temperature compensated buffer value (in the figure 19.8°C Æ 6.882): To modify this

last value use the arrow keys ( and ).

• Offset and slope values after calibration: When you enter the calibration procedure, these

values are set to the factory values. When pressing F3=CAL, the actual conditions are shown.

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• The buffer solution nominal value at 25°C as detected by the instrument (in the figure

Nom.=6.865) and the symbol indicating the electrode quality.

• The numbers 0, 1, 2, 3, 4 and 5 refer to the buffer solutions of the Buffer1, ..., Buffer5

menu. Among the selected buffers, the instrument automatically detects the closest to the pH value being read, and shows it blinking at the bottom (“2” in the example).

5. To proceed with the calibration press F3 = CAL. The offset and gain calibration and the

electrode efficiency are displayed. The blinking number identifying the detected buffer changes to ;, to indicate that the current value has been accepted. The blinking of the new symbol means the instrument is still in calibration mode. By pressing F3 = CAL again, it is possible to repeat the calibration from the last point to obtain a finer calibration.

6. Extract the electrode from the buffer, wash it, clean it carefully, and insert it in the next buffer.

7. The instrument shows the new buffer value. This value is blinking. The previous calibration point is captured permanently: The blinking ;, becomes still.

8. To continue with other calibration points, repeat the steps from point 5.

9. To end the electrode calibration, press ESC.

NOTES:

• By accessing the pH calibration, the previous calibration information are transferred in

the “pH Electrode Calibration History”. The current offset and slope values are set to nominal values: The offset = 0mV, the gain (slope) varies according to the measured temperature (59.16mV/pH at 25°C). You should perform a new calibration.

If an error is made during calibration, you can press F1 = RESET to restart with a new calibration.

• The instrument is provided with a measurement stability control system: Until the reading is not

sufficiently stable, the F3 = CAL key is disabled. Instead, the WAIT message is displayed.

• When choosing the standard buffer (see the MENU), you can disable one by selecting NIL. In

this case, the buffer is excluded from the sequence, and won’t be proposed during calibration.

• If the buffer value is rejected because it is considered to be excessively corrupted, the “Buffer

out of limits!” message will appear. The instrument waits for a valid buffer. If it is not available,

press F1=RESET to restore the initial calibration and exit using F3=EXIT. Repeat the calibration as soon as possible.

• During calibration, the instrument evaluates the electrode efficiency: If the correction is

excessive, the electrode symbol is replaced by “ERROR”. If you confirm the calibration anyway,

the measurement on the display and the electrode symbol, which appears by pressing DISP,

are blinking to remind you that you should replace it as soon as possible.

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Temperature characteristics of Delta OHM standard solutions

The 8 standard buffers reported in the table on page 21 are memorized in the instrument with

relevant variations according to temperature: The characteristics of the three Delta Ohm standard buffers at 6.86pH, 4.01pH and 9.18pH (@25°C) are reported below.

6.86 p H @ 25°C 4.01 p H @ 25°C

°C pH °C pH °C pH °C pH

0 6.98 50 6.83 0 4.01 50 4.06

5 6.95 55 6.83 5 4.00 55 4.07 10 6.92 60 6.84 10 4.00 60 4.09 15 6.90 65 6.85 15 4.00 65 4.10 20 6.88 70 6.85 20 4.00 70 4.13

25 6.86

75 6.86

25 4.01

75 4.14 30 6.85 80 6.86 30 4.01 80 4.16 35 6.84 85 6.87 35 4.02 85 4.18 40 6.84 90 6.88 40 4.03 90 4.20 45 6.83 95 6.89 45 4.05 95 4.23

9.18 p H @ 25°C

°C pH °C pH

0 9.46 50 9.01

5 9.39 55 8.99 10 9.33 60 8.97 15 9.28 65 8.94 20 9.22 70 8.92

25 9.18

75 8.90 30 9.14 80 8.88 35 9.10 85 8.86 40 9.07 90 8.85 45 9.04 95 8.83

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Conductivity measurement

The HD 98569 works with combined conductivity/temperature probes with SICRAM (right input). The 4 wire Pt100 temperature sensor is used for automatic compensation of conductivity.

If a temperature only probe is connected (to the pH/mV or O

inputs), the measured temperature value becomes the refe rence value, and has priority on the one supplied by the combined conductivity probe.

SICRAM conductivity probes

The combined conductivity/temperature probe with SICRAM is fitted with a Pt100 temperature sensor and an electronic module. The module has a memory circuit that enables the instrument to recognize the type of probe connected. It stores also the serial number, the factory calibration of the Pt100 sensor, the manufacturing date and the last calibration performed by the user.

The SICRAM conductivity probes use the cell constant saved in the probe’s memory: a new calibration updates its value.

The instrument obtains the following from the measurement of conductivity:

• the liquid resistivity measurement (Ω⋅cm, kΩ⋅cm, MΩ⋅cm),

• the concentration of total dissolved solids (TDS) according to the

/TDS conversion factor,

which can be modified using the menu,

• the salinity (NaCl quantity in the solution, expressed in g/l).

By repeatedly pressing “F3 = cond.” you can select the quantity.

The conductivity probes must be periodically calibrated. To facilitate this operation, four standard calibration solutions are automatically recognized by the instrument:

• 0.001 Molar KCl solution (147μS/cm @25°C),

• 0.01 Molar KCl solution (1413μS/cm @25°C),

• 0.1 Molar KCl solution (12880μS/cm @25°C),

• 1 Molar KCl solution (111800μS/cm @25°C),

User calibration of the temperature sensors is not required. The probes are detected during turn on, and this cannot be pe rformed when the instrument

is already on, therefore if a probe is connected and the instrument is on, it is necessary to turn it off and on.

Stand ard SP06TS probe

The 4-electrode conductivity/temperature combined probe, code SP06TS, is formed by a cell delimited by a bell in Pocan. A positioning key, present in the probe's end part, orients the bell correctly when the probe is

introduced. For cleaning, simply pull the bell along the probe's axis without rotating it. It is no t

possible to perform measurements without this bell.

The probe is recommended for non-heavy general use. The temperature measuring range is 0°C…+90°C.

- - 25

4-electrode or 2-electrode probes

The HD 98569 uses 4-electrode or 2-electrode probes for conductivity measurement. The selection of the type of probe is managed automatically by the SICRAM module. The 4-electrode probes are preferred to measure high conductivity solutions, either over an extended range or in presence of pollutants. The 2-electrode probes operate in a shorter measurement range but with an accuracy comparable with the 4-electrode probes. The probes can be in glass or plastic: The first can work in presence of aggressive pollutants, the latter are more resistant to collisions, and so more suitable for industrial use.

Probes with temperature sensor

The combined conductivity probes for the HD 98569 are fitted with a built-in Pt100 temperature sensor, and measure conductivity and temperature at the same time: This allows automatic

correction of the conductivity (ATC) according to the measured temperature. Alternatively, you can

measure the temperature using a Pt100 probe connected to the pH/mV or O

inputs: If this probe is

present, the temperature of the combined probe is not used.

Choosing the cell constant

The cell constant K is a piece of information which characterizes the cell. It depends on its geometry and is expressed in cm

–1

. There is no cell capable of measuring the entire conductivity scale accurately enough. Consequently, cells with different constants are used allowing good accuracy on different scales. The cell with constant K = 1 cm

–1

allows measurements from low

conductivity up to relatively high conductivity.

The theoretical measurement cell is made of two 1 cm

metallic plates separated one from the

other by 1 cm. This type of cell has a cell constant Kcell of 1 cm

–1

. In essence, the number, form, material and dimensions of the plates in the cell are different from model to model, from manufacturer to manufacturer. The low constant K probes are preferably used for low conductivity values, the high constant ones for high values. The indicative measurement range is reported in the following diagram:

Automatic or manual temperature compensation for conductivity measurement

The conductivity measurement generally refers to a standard temperature, called reference temperature, that is, the instrument proposes the conductivity you would get at the reference

temperature. This temperature can be chosen within the range 0…50°C in the “Conductivity

Reference Temperature” menu item (usually the values of 20°C or 25°C are used).

- - 26

The conductivity variation per each grade of temperature variation is a characteristic of the solution

and is indicated by the term "temperature coefficient α

": admissible values from 0.00 to

4.00%/°C, default value 2.00%/°C.

When a temperature sensor is present, the instrument automatically applies the temperature compensation function, and proposes the measurement using the reference temperature according to the coefficient α

on the display.

Resistivity, TDS and salinity measurements

The HD 98569 instrument measures electric conductivity and temperature of a solution, and then calculates resistivity, salinity and TDS. By repeatedly pressing “F3 = cond.” you can select the measurement.

The resistivity is defined as the reciprocal of conductivity. The measurement is expressed in Ωcm or one of the derived units (kΩcm, MΩcm or GΩcm). It is generally used to measure pure and ultra

pure water.

The salinity is calculated using a more complex calculation: It is based on the assumption that the measured conductivity is entirely and only due to the sodium chloride (NaCl) dissolved in the water. It is expressed in g/l or mg/l.

The TDS (Total Dissolved Solids) is the measurement of the total concentration of ion species in the solution. It is calculated by multiplying the conductivity measurement by a factor called “TDS

Coefficient”, set in the menu from 0.4 to 0.8 (MENU >> “Conductivity Options” >> “TDS

Coefficient”). The measurement of total dissolved solids is expressed in g/l or mg/l.

Calibration of conductivity

The probe calibration can be carried out on one to four points, using the standard solutions automatically detected by the instrument (automatic calibration) or other solutions with known temperature characteristics (manual calibration).

Technical note on the instrument functioning The instrument uses four different automatically selected measurement scales: When the cell constant is equal to 1, the four standard calibration solutions are associated to a different measurement scale. The calibration solution at 147μS/cm refers to the measurement scale 0, the solution at 1413μS/cm to the measurement scale 1, and so on. When the calibration point is confirmed using the CAL key (see the details in the next paragraph), the display indicates the calibrated scale (range) with the ; symbol.

If the calibration was performed on multiple solutions, make sure that the

; symbol is

displayed near a non yet calibrated range: It is useless to calibrate the same range twice.

This warning is valid only if the cell constant is different from 1, and/or the solutions are not standard.

Automatic calibration of conductivity using memorized standard solutions

The instrument can recognize four standard calibration solutions:

• 0.001 Molar KCl solution (147μS/cm @25°C),

• 0.01 Molar KCl solution (1413μS/cm @25°C),

• 0.1 Molar KCl solution (12880μS/cm @25°C),

• 1 Molar KCl solution (111800μS/cm @25°C),

By using one of these solutions, the calibration is automatic; the calibration can be carried out on

- - 27

multiple points to increase accuracy. The manual calibration is possible with a different conductivity solution from that used in the automatic calibration.

The solution temperature for the calibration must be between 15°C and 35°C: If the solution is under 15°C, or over 35°C, the instrument rejects the calibration and displays “NON ADMISSIBLE TEMP.”.

1. Turn the instrument on with the ON/OFF key.

2. Set the α

temperature coefficient in the menu (point 5 on page 15): For Delta OHM calibration

solutions, enter 2.00%/°C.

3. Set the reference temperature in the menu (20°C or 25°C) (point 5.1 on page 15).

4. Dip the conductivity meter cell in the calibration solution until the electrodes are covered with

liquid.

5. Stir the probe lightly to remove any possible air inside the measurement cell.

6. If a temperature probe is also present, immerse it together with the conductivity probe.

7. Press CAL, followed by F3 = cond.

8. The page shown in the figure will appear: From top to bottom there are:

• The conductivity measurement value with the current calibration (1.326mS in the example)

• The recognized standard calibration solution value (Target Æ 1.332). Both values refer to

the solution actual temperature, that is, not compensated;

• The solution temperature and the current cell constant Kcell (when accessing calibration,

the cell constant Kcell is read in the memory of the SICRAM probe);

• The standard calibration solution nominal value at 25°C, which is closest to the conductivity

value being read;

• 4 measurement ranges (Range = 0 1 2 3). The working range is blinking (“1” in the

example).

If the measurement was TDS, resistivity or salinity, by pressing CAL the instrument goes automatically into conductivity calibration mode.

9. The detected buffer value (Target), can be modified using the arrows  and .

10. To proceed with the calibration press F3 = CAL. The cell constant value is updated.

The ; symbol is displayed over the number identifying the calibrated range. The instrument is

still in calibration mode: By pressing F3 = CAL again, it is possible to repeat the current

calibration point to obtain a finer calibration.

11. To end the calibration and return to measurement, press ESC (go to step 15), or continue the

calibration for the next point.

- - 28

12. Extract the probe from the calibration solution, wash it, clean it carefully, and insert it in the

following solution.

13. The instrument proposes the detected value of the new solution and the corresponding range

is blinking. The previous point is captured permanently.

14. Continue the calibration by repeating the steps from point 8.

15. To end the calibration press ESC.

16. Rinse the probe with water. If you are going to perform low conductivity measurements, we

recommend rinsing the probe using distilled or bi-distilled water.

The instrument is calibrated and ready for use.

The calibration updates the cell constant by saving it in the probe’s memory. Note: When calibrating multiple points, it is recommended to start from lower va lues toward higher values, not vice versa.

Manual calibration of conductivity using not-memorized standard solutions

Manual calibration is possible at any calibration solution and temperature if it is within the instrument measurement limits and provided that you know the solution's conductivity at the calibration temperature.

The solution temperature must be between 15°C and 35°C: If the solution is under 15°C, or over 35°C, the instrument rejects the calibration and displays “NON ADMISSIBLE TEMP”.

Proceed as follows:

1. Turn the instrument on with the ON/OFF key.

2. Set the α

temperature coefficient to 0.0 (point 5 on page 15).

3. Dip the conductivity meter cell into a known conductivity solution. The electrodes must be

immersed in the liquid.

4. Stir the probe lightly to remove any possible air inside the measurement cell.

5. If a temperature probe is also present, immerse it together with the conductivity probe.

6. According to the temperature detected, determine the calibration solution conductivity using

the table specifying the conductivity according to temperature.

7. Press CAL, followed by F3 = cond.

8. The page shown in the figure will appear: From top to bottom there are:

• The conductivity measurement value with the current calibration (2.034mS in the example)

• The recognized standard calibration solution value (Target Æ 2.047). Both values refer to

the solution actual temperature, that is, not compensated;

• The solution temperature and the current cell constant Kcell (when accessing calibration,

the cell constant Kcell is read in the memory of the SICRAM probe);

• The standard calibration solution nominal value is not present;

• 4 measurement ranges (Range = 0 1 2 3). The working range is blinking (“1” in the

example).

- - 29

9. The instrument measures the conductivity according to the cell constant saved in the probe’s

SICRAM memory: If the read value is sufficiently close to the theoretical one, the “Target” indication reports the actual value, at the measured temperature, of one of the four standard solutions: The detected standard solution is displayed in the “nom_buf” item. Continue the calibration from point 8 of the previous chapter “Automatic calibration of conductivity using memorized standard solutions”. If the calibration solution value is too far from one of the four standard solutions (147μS/cm, 1413μS/cm,…), “nom_buf” is not defined. Continue the calibration according to the following point:

10. Using the arrows ( and ) set the conductivity value determined in point 6, and confirm with

F3 = CAL. The cell constant correction is displayed.

The ; symbol is displayed over the number identifying the calibrated range. The instrument is

still in calibration mode: By pressing F3 = CAL again, it is possible to repeat the current

calibration point to obtain a finer calibration.

11. To end the calibration and return to measurement, press ESC (go to step 17), or continue the

calibration for the next point.

12. If the next calibration solution is one of the standard solutions automatically detected

by the instrument, open the menu and re-enter the temperature coefficient as it was before

the calibration. Extract the probe from the calibration solution, wash it, clean it carefully, and insert it in the following solution. Continue the calibration from point 12 of the previous chapter “Automatic calibration of conductivity using memorized standard solutions”.

13. If the next calibration solution is NOT one of the standard solutions automatically

detected by the instrument, extract the probe from the calibration solution, wash it, clean it

carefully, and insert it in the following solution.

14. The instrument proposes the value of the new solution: The previous point is captured

permanently.

15. Continue by repeating the steps from point 9.

16. To end the calibration press ESC.

17. Open again the menu, and re-enter the temperature coefficient as it was before the calibration.

18. Rinse the probe with water. If you are going to perform low conductivity measurements, we

recommend rinsing the probe using distilled or bi-distilled water.

The instrument is now calibrated and ready for use.

The calibration updates the cell constant by saving it in the SICRAM probe’s memory.

NOTES:

• When accessing the calibration, the cell constant Kcell is set to the value read in the

memory of the probe with SICRAM.

- - 30

• Upon confirming the calibration by using “F3 = CAL”, the instrument checks that the correction

to the cell constant does not exceed the ±10% limits. If the calibration is rejected because it

exceeds the ±10% limit, the “NON ADMISSIBLE VAR%” message will appear, followed by a long beep. The instrument r emains in calibra tion mode a nd mainta ins the cell c onstant nominal value of the SICRAM memory: If you leave the calibration by pressing ESC, the

instrument will preserve the cell constant K nominal value.

• The most frequent causes of error are due to the probe malfunctioning caused by deposits, dirt,

pollution, bad preservation conditions of the standard conductivity solutions. Please see the

chapter dedicated to trouble shooting on page 38.

• The SPT401.001S probe with cell constant K=0.01 is supplied with a 2m cable. The cable has a

connector to be screwed on the probe’s body, on one end, and the SICRAM module to be connected to the instrument, on the other end. The SICRAM module contains the probe’s

information (serial number, calibration parameters, etc.) The probe, together with its cable ,

should be used only with that cable. You cannot use other probes’ cables: The measured value will be wrong.

The SPT401.001S measurement is performed in closed chamber.

Table of standard solutions at 147μS/cm, 1413μS/cm, 12880μS/cm and 111800μS/cm

The table reports the standard solutions automatically detected by the instrument according to temperature.

°C µS/cm µS/cm mS/cm mS/cm °C µS/cm µS/cm mS/cm mS/cm

15.0

121 1147 10.48 92.5

25.0 147 1413 12.88 111.8

16.0

124 1173 10.72 94.4

26.0

150 1440 13.13 113.8

17.0

126 1199 10.95 96.3

27.0

153 1467 13.37 115.7

18.0

128 1225 11.19 98.2

28.0

157 1494 13.62 117.7

19.0

130 1251 11.43 100.1

29.0

161 1521 13.87 119.8

20.0 133 1278 11.67 102.1 30.0

164 1548 14.12 121.9

21.0

136 1305 11.91 104.0

31.0

168 1581 14.37 124.0

22.0

138 1332 12.15 105.9

32.0

172 1609 14.62 126.1

23.0

141 1359 12.39 107.9

33.0

177 1638 14.88 128.3

24.0

144 1386 12.64 109.8

34.0

181 1667 15.13 130.5

25.0 147 1413 12.88 111.8 35.0

186 1696 15.39 132.8

- - 31

Measurement of the dissolved Oxygen

The HD 98569 measures dissolved Oxygen using combined probes of polarographic, with two or

three electrodes, and galvanic type with integrated temperature sensor. The dissolved Oxygen probe is fitted with a SICRAM interface module that stores the last 8 calibrations and the serial number.

The instrument connected to the probe detects the dissolved Oxygen partial pressure in the measured liquid, as well as the temperature and the barometric pressure: Using these values, it calculates the dissolved Oxygen concentration (mg/l), and the saturation index (%).

If a temperature only probe is connected (pH/mV connector), the temperature measured by this probe becomes the reference value for the measurement chain, and has priority on the one supplied by the combined dissolved Oxygen probe.

The probe is detected during turn on, and this cannot be performed when the instrument is already on, therefore if a probe is connected and the instrument is on, it is necessary to turn it off and on.

How to measure

Some instructions on the instrument's operation and measurement mode are reported below.

By pressing the F2 = O

function key, you can select the type of measurement: the dissolved

Oxygen concentrati on (mg/l), or the saturation index (%).

Immerse the probe in the liquid to a depth of at least 40 mm.

It is essential that the liquid in contact with the membrane is continually changed so as to avoid incorrect measurements caused by Oxygen exhaustion in the liquid sample. Check that the liquid stirring is such that it avoids production of measurement variations.

While immersing the probe, check that no air bubbles remain trapped in contact with the membrane.

When connecting the probe to the instrument and turning it on, wait a few minutes (~ 15) until the reading is stable and reliable. This time span serves to eliminate the dissolved Oxygen in the cell's internal electrolyte. Leave the probe connected to the instrument even if the instrument is off to avoid this waiting time. Disconnect the probe only at the end of the work.

The probe connected to the instrument is always aligned even if the instrument is off: in this condition the measurement can occur immediately after turning on, once the probe response’s stabilized.

If the measurements are taken in a container, if possible, fit the container with a stirrer and adjust the stirring speed in order to obtain a stable reading, avoiding trapping air in the liquid.

The oxygen probe measuring range according to temperature is 0°C…+45°C.

To preserve and maintain the probe, please see the next paragraphs.

- - 32

Calibration of the dissolved Oxygen probe

The probe must be calibrated periodically using the DO9709/20 (for polarographic probe) or DO9709/21 (for galvanic probe) calibrator. The instrument checks the dissolved Oxygen probe efficiency. The "OFS_ERROR" message indicates that the probe is exhausted. The same message is displayed during calibration, when calibration is not possible or the reading is unstable. Clean the measurement cell with replacement of the electrolyte and/or the membrane covering the measurement electrodes: If the error indication persists, replace the probe.

Proceed as follows:

1. Connect the dissolved Oxygen probe to the instrument.

2. Disconnect the temperature only probe, if connected to the instrument, so that the indicated

temperature is that measured by the dissolved Oxygen probe built-in temperature sensor.

3. Turn the instrument on with the ON/OFF key.

4. Wet the sponge contained in the calibrator using 2ml of distilled water.

5. Insert the probe into the calibrator.

6. Wait at least 15 minutes until the system stabilizes thermally, saturation is reached inside the

calibrator and the reading is stable. If the membrane and/or electrolyte solution have been replaced, wait at least 30 minutes.

7. Press CAL, then “F2 = ox y” (when accessing the calibration, the slope is set automatically to

1.000 and the previous calibration information is transferred to the “Dissolved Oxygen Probe Calibration History” contained in the SICRAM module). The saturation index value, temperature, barometric pressure and slope of the probe are displayed from top to bottom.

8. To proceed with the calibration press F3 = CAL. The calibration value 101.7% and the new

slope value, corrected according to the new calibration, are displayed.

9. If the measurement did not stabilize, press F3 = CAL again to repeat the calibration.

10. To end the calibration and return to measurement, press ESC.

The instrument is calibrated and ready for use.

If an error is made during calibration, you can press F1 = RESET to reset the slope value to 1.000.

You must repeat the calibration.

On pressing F3 = CAL during calibration, the instrument checks that the correction to be made does not exceed the expected limits for correct functioning. If the calibration is rejected, the display

shows “OFS_ERROR”, the calibration is ended and the slope value is set to 1.000. In case of “OFS_ERROR”, replace the electrolyte and the membrane. If the error persists, you can

try to clean the electrodes using very fine abrasive cloth (better if

impregnated wit h ammonia) before

replacing the probe.

- - 33

Electrolyte solution and/or membrane replacement

The electrolyte contained in the dissolved oxygen probe will be exhausted because of the chemical reaction generated by the current in proportion to the partial pressure of the oxygen present in the water. Subsequently, the current generated by the probe is so low that the calibration operation is impossible. It is necessary to replace the electrolyte contained in the probe to restore its functionality.

Incorrect use of the probe can cause the rupture or obstruction of the oxygen-permeable membrane containing the electrolyte solution. In this case it is necessary to replace the membrane and the electrolyte solution.

OLAROGRAPHIC PROBE

Unscrew the probe's head and the membrane permeable to oxygen.

If necessary, replace the membrane.

Fill the probe's head with the DO 9701 electrolyte solution until the level indicated in the figure (filling level).

Eliminate any possible air bubble in the electrolyte solution.

Screw the probe's head back on carefully.

GALVANIC PROBE

1. Unscrew the probe's head and the membrane permeable to oxygen. If necessary, replace the

membrane.

2. Attach the needle to a 10 ml syringe.

3. Using the syringe, withdraw the DO 9701.1 electrolyte

solution.

4. Remove the air bubbles inside the syringe. Insert the needle

into one of the four holes surrounding the cathode of the probe and inject the solution until it leaks out. The fill volume is approximately 5 ml.

5. Screw the probe's head back on carefully.

After replacement of the electrolyte solution and/or membrane, insert the probe's connector in the instrument and wait 15 minutes before performing the dissolved oxygen measurement (this is the necessary time to exhaust the oxygen trapped in the electrolyte solution during the replacement).

- - 34

Check the probe's status

The glass body covering the cathode of the polarographic probe and the membrane on the probe's head should not be damaged. If there are cracks in the glass body, the probe must be replaced. If the Oxygen-permeable membrane is damaged, dirty or obstructed it must be replaced. When the probe's head is unscrewed, the body in glass is not protected. Handle it with care to avoid collisions that could damage irreparably the glass covering the cathode.

Control the zero of the probe

Compensation of the zero (offset) of the probe is already done in the factory. The user can control the offset by immersing the probe in the 0.0% dissolved Oxygen solution (DO

9700):

• Pour a small quantity of 0.0% dissolved Oxygen solution into a container, after suitably washing

the container with distilled water,

• Insert the probe in the zero solution and wait at least 5 minutes,

• The instrument should indicate a saturation index < 0.3%.

Dissolved Oxygen probe storage

When the dissolved Oxygen probe is not used for long periods, it should be disconnected from the instrument to avoid useless consumption of the electrolyte solution. Always keep the electrode wet using the special cap provided with the probe and filled with distilled water.

Polarographic probe and galvanic probe: differences

To help choosing between the use of polarographic or galvanic probe, the following table summarizes the main differences between the two probes.

Polarographic probe Galvanic probe

Polarization time

After connecting the probe to the instrument it is necessary to wait at least 5-10 minutes before taking the measurement.

Polarization is not needed. After connecting the probe to the instrument it is possible to take the measurement immediately.

Power consumption

If connected to the instrument, the probe is also powered when the instrument is off, decreasing the life of the batteries.

Power is not needed. Longer life of the batteries, feature important in field measurements.

Cleaning

Requires frequent cleaning of the anode.

Maintenance of the electrodes is not needed.

Electrolyte replacement

Requires frequent replacement of the electrolyte solution.

It can also work months without replacing the electrolyte solution.

Drift

The measurement of the zero has the tendency to drift.

The measurement of the zero is stable. Higher accuracy when measuring low oxygen concentrations.

- - 35

Temperature measurement

The instrument accepts platinum temperature probes with resistances of 100Ω and SICRAM module on the pH/mV and O

inputs. The instrument can also measure the temperature using the combined pH/temperature, conductivity/temperature and dissolved Oxygen/temperature probes. The temperature sensor excitation current was chosen in order to minimize the sensor self-heating effects. All temperature probes with SICRAM module are calibrated in the factory.

The probes are detected during turn on: When you insert a probe into a functioning instrument, the instrument does not show any new message: You should turn the instrument off and then back on again.

The °C or °F unit of measurement can be chosen for display, printing, and logging using the °C/°F key.

The displayed temperature is used for pH, conductivity or dissolved Oxygen compensation. If no temperature or combined temperature probes are present, the manual temperature is displayed:

The MTC message is displayed. If at least one temperature probe is connected (temperature only probe or combined probe), the message becomes ATC. The measured temperature is used to

compensate the pH, conductivity and dissolved Oxygen measurements.

In case of multiple temperature sensors connected to the instrument (e.g. Pt100 probe, pH/temperature probe with SICRAM, combined conductivity or dissolved Oxygen probe), the

reference temperature to compensate all measurements, is chosen according to the following principle: The temperature only probe has priority on the te mpera ture supplied by combined probes. If the temperature only probe is not present, the following order is valid: The

temperature of the dissolved Oxygen probe has priority on the pH/mV probe that has priority on the conductivity probe.

If you disconnect the reference temperature probe (temperature only probe or combined probe), the instrument switches from ATC to MTC mode. The temperature used for compensation is the

one manually set using the °C/°F key (see the description on page 8).

How to measure

The temperature measurement by immersion is carried out by inserting the probe in the liquid for

at least 60mm; the sensor is housed in the end part of the probe.

In the temperature measurement by penetration the probe tip must be inserted to a depth of at

least 60mm, the sensor is housed in the end part of the probe. When measuring the temperature on frozen blocks it is convenient to use a tool to bore a cavity in which to insert the tip probe.

In order to perform a correct contact measurement, the measurement surface must be even and

smooth, and the probe must be perpendicular to the measurement plane.

So as to obtain the c orrect measurement, the insertion of a drop of oil or heat-conductive paste is useful (do not use water or solvents). This method also improves the response time.

- - 36

Warnings and operating instructions on the temperature sensors

1. Do not expose the probes to gases or liquids that could corrode the material of the sensor or

the probe itself. Clean the probe carefully after each measurement.

2. Do not bend the probe connectors or force them upward or downward.

3. If the connector is fitted with a seal rubber ring (o-ring): Make sure it is inserted all the way.

4. Do not bend, deform or drop the probes, as this could cause irreparable damage.

5. Always select the most suitable probe for your application.

6. Do not use the temperature probes in presence of corrosive gases or liquids. The sensor

container is made of AISI 316 stainless steel, while the contact probe container is made from AISI 316 stainless steel plus silver. Avoid contact between the probe surface and any sticky surface or substance that could corrode or damage it.

7. Avoid blows or thermal shocks to Platinum temperature probes as this could cause irreparable

damage.

8. To obtain reliable measurements, temperature variations that are too rapid must be avoided.

9. Temperature probes for surface measurements (contact probes) must be held perpendicular

against the surface. Apply oil or heat-conductive paste between the surface and the probe in order to improve contact and reduce reading time. Whatever you do, do not use water or solvent for this purpose. A contact measurement is always very hard to perform. It has high levels of uncertainty and depends on the ability of the operator.

10. Temperature measurements on non-metal surfaces usually require a great deal of time due to

the low heat conductivity of non-metal materials.

11. If probes are not insulated from their external casing; be very careful not to come into contact

with live parts (above 48V): This could be extremely dangerous for the instrument as well as for the operator, who could be electrocuted.

12. Avoid taking measurements in presence of high frequency sources, microwave ovens or large

magnetic fields; results may not be very reliable.

13. Clean the probe carefully after use.

14. The instrument is water resistant and IP66, but should not be immersed in water. Close the

free connectors using caps. The probe connectors must be fitted with sealing gaskets.

- - 37

Instrument storage

Instrument storage conditions:

• Temperature: -25…+65°C.

• Humidity: less than 90% RH without condensation.

• During storage avoid locations where:

humidity is high, the instrument may be exposed to direct sunlight, the instrument may be exposed to a source of high temperature; the instrument may be exposed to strong vibrations;

the instrument may be exposed to steam, salt or any corrosive gas. The instrument case is made of ABS plastic and rubber: do not use any incompatible solvent for cleaning.

- - 38

pH, conductivity and dissolved Oxygen measurements - Most frequent

problems, possible causes and handling

Instrument functioning

• When selecting some functions the “Operation reserved to the administrator” message is disp layed on the screen.

Some instrument functions are reserved to the user registered as "Administrator". The other users

cannot execute them (see the details on page 17).

• Clicking on the LOG key the “Logging disabled!” message is displayed on the screen.

The logging interval was set to 0. To enable it, open the menu “System Parameters >> Memory and Logging Options >> Log Interval”, and select a log interval different from zero.

pH measurement

The average life of a pH electrode is about one year according to the use and maintenance performed.

The electrodes used at high temperatures or in highly alkaline environments have a shorter life.

It is recommended to condition the new electrodes for half day by immersing them, before use, into a buffer at 6.86pH or 4pH.

Calibrate the electrode with solutions closer to the values being measured. A new electrode must always be calibrated at neutral pH (6.86pH) as first point, and at least on an acid or alkaline second point.

Generally, the pH electrodes have a body in glass: handle them with care to avoid breakage. In particular, the membrane (the sensitive element housed in the end part of the electrode) is made of very thin glass.

Some of the most frequent problems and their possible solutions are reported below.

Wrong pH measurement. Carry out the following checks:

 Check that the diaphragm is not obstructed and possibly clean it using the HD62PT

solution.

 Check that the reference system is not contaminated. In case of a filling type electrode,

replace the electrolyte with the suitable solution.

 Check that no air bubbles are present in the electrode tip and that it is sufficiently

immersed.

Dirt residuals deposited on the membrane can alter the measurement: use the HD62PP solution

for protein cleaning.

Slow response or wrong measurements. Possible causes are aging, or erosion of the

membrane, or a short circuit in the connector.

Storage. Keep the electrode immersed in the HD62SC solution.

Conductivity measurement

The service life of a cell can be unlimited, provided that the necessary maintenance is performed and that it does not break. Some of the most frequent problems and their possible solutions are reported below.

Measurement of conductivity different from the ex pec ted value.

Check that the probe is connected to the correct input: Input

- - 39

Check that the cell used is suitable for the measurement range. Check that the cell is not dirty, that there are no air bubbles inside it. Repeat the calibration using the proper not contaminated standard.

Slow response or instability.

Check that the cell is not dirty, that there are no traces of oil or air bubbles inside it. If you work with a Platinum cell, new platinum-coating of the electrode could be necessary.

Calibration not accepted.

Check that the standard solutions are in good condition, and that the calibration solution temperature is within the range 15…35°C.

Measurement of the dissolved Oxygen

The body of the polarographic probe is in POM, the body of the galvanic probe is in Epoxy, the membrane is in 25μ PTFE.

During use, control the compatibility of these materials with the liquid that you want to measure. The probe must be kept wet by using its protection. Regularly check that no obstructions are present on the membrane. Do not let hands touch the membrane. During measurement, make sure the membrane is not coming into contact with objects that could tear it off.

- - 40

Instrument Signals and Faults

The following table lists all error indications and information displayed by the instrument and supplied to the user in different operating situations:

Displa y indication Explanation

pH ERROR

This message appears if the pH measurement exceeds the

-2.000pH…19.999pH limits, if the mV measurement exceeds the ±2.4V limits.

mV ERROR

The measurement appears in mV, and exceeds the ±2.4V limits.

LOGGING DISABLED

Logging disabled. The logging interval is set to 0.

LOG MEM FULL

The memory is full, the instrument cannot store further data. The memory space reserved to continuous recording is full.

MEM MEMO R Y F UL L

The memory is full, the instrument cannot store further data. The memory space reserved to single recording is full.

ERROR IN LOG

MEMORY

Instrument management program error. Contact the instrument's supplier and communicate the error message.

PROBE ERROR

A probe with SICRAM module has been inserted when not admissible for that specific instrument.

SYS ERR #

Instrument management program error. Contact the instrument's supplier and communicate the numeric code # reported by the display.

CAL LOST

Program error: it appears after turning on for a few seconds. Contact the instrument's supplier.

CAL

blinking

Calibration not completed correctly.

T_ERROR

The measurement limit of the temperature probe has been exceeded

OFS ERROR

The dissolved Oxygen probe is exhausted. See the paragraph “Calibration of the dissolved Oxygen probe”

blinking

In the models fitted with a Bluetooth HD22BT module, it means that the instrument is connecting to a PC or Bluetooth printer.

The symbol stops blinking when the connection is correctly established. A continuous blink indicates that no Bluetooth device has been found.

- - 41

Battery symbol and battery replacement

The battery symbol on the display constantly shows the battery charge status. To the extent that batteries have discharged, the symbol "empties". When the charge decreases still further it starts blinking…

In this case, batteries should be replaced as soon as possible. If you continue to use it, the instrument can no longer ensure correct measurement. Data stored on memory will remain.

The in strument does not turn on, if th e batt ery charge level is insufficie nt. In order to avoid data loss, the logging session is ended, if the HD 98569 is logging and

battery voltage falls below the minimu m operating level.

To replace the batteries, switch the instrument off and unscrew the two screws on the battery cover counter clockwise. After replacing the batteries (4 1.5V alkaline batteries - type AA) fasten the cover’s screws clockwise.

After replacing the batteries, the date and time must be checked.

The instrument can be powered by the mains using, for example, the stabilized power supply SWD10 input 100÷240 Vac output 12 Vdc – 1A. The power supply positive (pole) must be connected to the central pin.

The external power supply connector has an external diameter of 5.5mm and an internal diameter of 2.1mm.

Warning: The power supply cannot be used as battery charger.

The battery symbol becomes

[~] when the external power supply is connected.

- - 42

MALFUNCTIONING UPON TURNING ON AFTER BATTERY REPLACEMENT

After replacing the batteries, the instrument may not restart correctly; in this case, repeat the operation. After disconnecting the batteries, wait a few minutes in order to allow circuit condensers to discharge completely; then reinsert the batteries.

WARNING ABOUT THE USE OF BATTERIES

• Batteries should be removed when the instrument is not used for an extended time.

• Flat batteries must be replaced immediately.

• Avoid loss of liquid from batteries.

• Use waterproof and good-quality batteries, if possible alkaline. Sometimes on the market, it

is possible to find new batteries with an insufficient charge capacity.

- - 43

Serial interface and USB

The instrument is provided with a multistandard serial port, electrically isolated, RS-232C and USB

2.0.

The USB connection requires the previous installation of a driver supplied with the instrument

software. Install the driver before connecting the USB cable to the instrument (please see the details on page 46).

Standard parameters of the instrument serial transmission are:

• Baud rate 38400 baud

• Parity None

• N. bit 8

• Stop bit 1

• Protocol Xon/Xoff

It is possible to change the RS232C serial port baud rate by setting the "Baud Rate" parameter in

the menu (please see page 12). The possible values are: 38400, 19200, 9600, 4800, 1200. The

other transmission parameters are fixed.

The USB 2.0 connection does not require the setting of parameters. The selection of the port is

carried out directly by the instrument:

All the commands transferred to the instrument must have the following structure:

XXCR where: XX is the command code and CR is the Carriage Return (ASCII 0D)

The XX command characters are exclusively upper case characters. Once a correct command is entered, the instrument responds with "&"; when any wrong combination of characters is entered, the instrument responds with "?". The instrument response strings end with the sending of the CR (Carriage Return) and LF (Line Feed) command, preceded by the “|” vertical bar character, that is, the combination “|CRLF”. Before sending commands to the instrument via the serial port, locking the keyboard to avoid functioning conflicts is recommended: Use the P0 command. When complete, restore the keyboard with the P1 command.

Reading the instrument parameters

COMMAND ACTION RESPONSE NOTES AA Model request

HD 98569 pH/Chi/Oxy/temperature

AG Firmware version Firmware 1.00.100 AH Firmware date 2006_01_31 AS Serial number Ser. Number=00000000

AU User identification

User=FACTORY User=Administrator User=User_1 User=User_2 User=User_3 User=Anonymous

AZ Full heading

HD 98569 Vers. 1.00.100 2007/04/24 Ser. number=00000000 Calibrated 2007-01-01 00:01:00 Operator=Admin Communication interface=USB Temp. comp. mode=AUTO T Probe = Pt100

- - 44

COMMAND ACTION RESPONSE NOTES FA Clock date request 060414092400

Current date “yy/mm/dd hh/mm/ss”, HEX format

FB Clock date request 06-12-31 00:33:27 yy-mm-dd hh:mm:ss FD

Instrument calibration date request

060414092400

Calibration date “yy/mm/dd hh/mm/ss”, HEX format

Instrument calibration date request

06-12-31 00:33:27 yy-mm-dd hh:mm:ss

K1 Print current measurements Same as manual print It increases the ID K2 pH calibration status Same as manual print K4 pH calibration history Same as manual print K6 Last conductivity calibration Same as manual print K7 O2 calibration history Same as manual print

No. of next memory location request

Next avail. memory=0001

RA Read log interval Print Interval= 000 RE Read current endpoint status Endpoint mode = 0 RF

Read parameter αT

Chi alfa = 2.00

Read pH electrode calibration expiration

pH cal exp.days = 0

RI Read parameter ID Sample ID = 00000001 RK Read cell constant Kcell Chi nominal Kcell = 0.700

Read parameter “Print and Storage Mode”

Print&mem = 0

0 = only print, 1 = print and record

Read parameter “Storage Mode”

Memory mode = 0

0 = standard 1 = cyclic

Read parameter “O

probe

calibration expiration”

Oxy cal exp.days = 0

RP Read pH resolution pH resolution = 1/1000 pH resolution: 1/100 RQ Read salinity Salinity = 11.1 g/l

Read conductivity reference temperature

Chi ref temp= 25.00

RS Read conductivity TDS factor Chi TDS factor= 0.500 RT

Read temperature mode (ATC or MTC)

Temp_MODE = 0

0 = MTC 1 = ATC

Read set units of measurement.

&0;0;1;0;

0 = pH , 1= mV 0 = micros, 1 = ohm, 2 = TDS, 3 = NaCl 0 = °C, 1 = °F 0 = sat% 1 = mg/l

Read pH calibration status

pH calibration status = valid pH calibration status = expired!

Read O2 calibration status

oxy calibration status = valid oxy calibration status = expired!

Setting the instrument parameters

COMMAND ACTION RESPONSE NOTES

Input date-time

&/?

DA 2005/12/12 12:34:56 It rejects any incorrect date

Setting of the displayed memory index

&/? lr3 ---> shows memory no. 4

- - 45

COMMAND ACTION RESPONSE NOTES

Uxy

Setting of the displayed unit of measurement

x = 0...3 // pH, cond, temp, oxy y = see the RU codes

Setting log interval

&/? 0...999

Setting Endpoint mode

&/?

0 = endpoint “dir” 1 = endpoint “man” 2 = endpoint “time” 3 = endpoint “auto”

Setting temperature coefficient α

&/? 0...400 = 0.00 ... 4.00 %

Setting pH calibration validity number of days.

&/? 0 ... 999

Setting sample identification number

&/? 00000000 ... 99999999

Setting print and storage mode

&/?

0 =

only print,

1 = print and record

Setting storage mode

&/?

0 =

linear logging mode

1= cyclic logging mode (endless

loop)

Setting O2 calibration validity number of days.

&/? 0 ... 999

Setting pH Resolution

&/?

0 = 2 decimal positions 1 = 3 decimal positions

Setting salinity for O

measurement

&/? 0..700 = 0.0 70.0 g/l

Setting conductivity reference temperature

&/? 0 ... 5000 = 0.00 50.00 °C

Setting conductivity TDS factor

&/? 400 ... 800 = 0.400 ... 0.800

Setting MTC temperature

&/? -500 ... +1500 = -50...+150 °C

Activation of the instrument functions

COMMAND ACTION RESPONSE NOTES

Exit from memory mode

Activate log

Activate memory display mode

Not accepted if no data present in the memory

Stop log + save operating parameters

Use it also to only save the operating parameters

Single line continuous printing

Stop single line printing

LDxxxx Memory dump no. xxxx+1 Dump or ? P0

Ping & lock keys

Ping & unlock keys

- - 46

Connection to a PC

The instrument is provided with a multistandard port with 8-pole MiniDin connector, for connection to a PC. Optionally, you can receive on request:

• serial connection cable RS232C with 8-pole MiniDin and sub D 9-pole female connectors (code

HD2110 CSNM).

• USB2.0 connection cable with 8-pole MiniDin and USB type A connectors (code HD2101/USB). The Bluetooth HD22BT module, directly installed by Delta Ohm, is also available. This module

allows wireless connection of the instrument to a PC fitted with a Bluetooth HD USB.KL1, to a Bluetooth HD40.2 printer, or to a PC with built-in Bluetooth interface.

The HD 98569 is supplied with DeltaLog11 software (vers. 2.0 and later). The software manages

the connection, data transfer, graphic presentation, and printing operations of the captured or logged measurements.

The DeltaLog11 software is complete with "On-line Help" (also in PDF format) describing its characteristics and functions.

The instruments are also compatible with the HyperTerminal communication program supplied

with the Windows operating systems (from Windows 98 to Windows XP).

CONNECTION TO THE RS232C SERIAL PORT

1. The measuring instrument has to be switched off.

2. Using the Delta Ohm “HD2110 CSNM” serial cable, connect the measurement instrument to the first free serial port (COM) of the PC.

3. Turn on the instrument and set the baud rate to 38400 (MENU >> SYSTEM PARAMETERS >> “RS232 Baud_Rate”, select 38400 using the arrows >> confirm with ENTER). The parameter remains in the memory.

4. Launch the DeltaLog11 application and press CONNECT. Wait for the connection to occur and follow the indications on the screen. For a description of the DeltaLog11 application, please refer to its on-line Help.

CONNECTION TO THE USB 2.0 PORT The USB connection requires the installation of the drivers. They are contained in the

DeltaLog11 CD-Rom. In the Documentation section of the DeltaLog11 CD-Rom, a complete driver installation guide in

PDF format is available. It is recommended to print this guide version and follow it exactly.

Proceed as follows:

1. Do not connect the instrument to the USB port until you are expre ssly requested to do

it.

2. Insert the DeltaLog11 CD-Rom (vers. 2.0 and later) and select the "Install/Remove USB

driver" item.

3. The application checks the presence of the drivers on the PC: The installation starts if they

are not present; if they are already installed, the drivers are removed by pressing the key.

4. The installation wizard prompts the software user license: To proceed, the software usage

terms must be accepted - click on YES.

5. On the next page the folder where the drivers will be installed is indicated: Confirm without

modifying.

- - 47

6. Complete the installation by clicking on Finish. Wait few seconds until the DeltaLog11 page

appears.

7. Close DeltaLog11.

8. Connect the instrument to the PC USB port. When Windows detects the new device, the

"New software installation wizard" is started.

9. If you are asked for the authorization to search an updated driver, answer NO and continue.

10. In the installation window, select “Install from a list or specific location”.

11. In the next window select “Search for the best driver in these locations” and “Include this

location in the search”.

12. Using Browse, indicate the installation folder provided at point 5:

C:\Program Files\Texas Instruments\USB-Serial Adapter

Confirm with OK.

13. If you get the message that the software did not pass the Windows Logo testing, select

“Continue”.

14. The USB driver are installed: At the end, click on “Finish”.

15. The installation wizard requests the files location once more: Repeat the just described

steps and provide the location of the same folder (see point 12).

16. Wait: The task could take a few minutes.

17. The installation procedure is now complete: The device will be automatically detected on

each new connection.

In order to check if the entire operation was successful, in CONTROL PANEL double click on:

• SYSTEM (for Windows systems up to XP) and select "Device Manager";

• "Device Manager"(for Windows Vista and 7).

Connect the instrument to the USB port, the following items should appear:

• “UMP Devices >> UMP3410 Unitary driver” and “Porte (COM e LPT) >> UMP3410 Serial Port (COM#)” for Windows 98 and Windows Me,

• “Multiport serial boards >> TUSB3410 Device” and “Ports (COM and LPT) >> USB-Serial Port (COM#)” for Windows 2000, NT, XP, Vista and 7.

When the USB cable is disconnected, these two items disappear and come back when it is connected again.

Notes.

1. If the instrument is connected to the USB port before installing the drivers, Windows signals

the presence of an unknown device: In this case, cancel the operation and repeat the procedure illustrated at the beginning of this section. You may need to uninstall the partially installed drivers.

2. In the documentation supplied with the DeltaLog11 CD-Rom, is included a detailed

version of this chapter with pictures. Moreover, the necessary steps to remove the USB drivers are reported.

- - 48

BLUETOOTH CONNECTION

Delta Ohm can install the Bluetooth HD22BT module on the HD 98569.

Through this module, the instrument can be wirelessly connected to a Bluetooth ready PC or printer. If the PC is not originally fitted with a Bluetooth interface, you need to connect the USB/Bluetooth

interface, code HD USB.KL1 , on a PC’s USB port. The interface is supplied with its own drivers

that should be installed on the PC. The HD40.2 printer is fitted with a Bluetooth interface.

The HD22BT module drivers are contained in the DeltaLog11 CD-Rom.

The instrument parameters for the Bluetooth module are reported in the menu at the item “SYSTEM PARAMETERS” >> “Bluetooth Parameters” (see the details on page 13).

In the documentation supplied with the DeltaLog11 CD-Rom, is included the detailed “Bluetooth Connection” guide, that illustrates the installation and use of the Bluetooth module for connection to the PC and for printing.

- - 49

Storing and Transferring Data to a PC

The HD 98569 instrument can be connected to a personal computer via an RS232C serial port or

an USB port, and exchange data and information through the DeltaLog11 software (vers. 2.0 and later) running in a Windows operating environment (see the details on the previous chapter). It is possible to print the measured values according to the label format (PRINT key) on a 24 column printer (e.g. HD40.1 or HD40.2) or store them in the internal memory using the Logging

function (MEM key): The label is as shown in the example on page 51. The stored data can be

recalled to be viewed directly on the instrument display, printed or transferred to the PC. Using the LOG key, you can record continuously the acquired measurements by selecting a logging interval from one second to one hour. You can also transfer the data wirelessly to a PC, if the instrument and the PC are fitted with a Bluetooth interface.

THE RECORD FUNCTIONS

The instrument allows the recording of up to 9200 data pages in its internal memory. Each data is made of the measurements detected by the probes connected to the inputs in a given instant. The

stored parameters are those shown on the display and selected using the F1, F2 and F3 keys.

Two different recording modes are available: one upon command and the other continuous.

Logging upon command

This function allows recording of the current screen and is managed by the MEM key. This mode

has 200 memory pages for a total of 200 single records. By pressing MEM, the function keys perform the following:

• MEM >> F1 = STOR: It stores the current screen.

• MEM >> F2 = CLR: It clears the memory section reserved to the 200 single samples. It does not

touch the continuous recording section (please see later, in this chapter). When pressing “F2 = CLR” you are prompted to confirm the erasure: Press “F3=YES” to erase, “F1=NO” to exit without erasing.

• MEM >> F3 = VIEW: It displays the single screens in the memory. When you have selected a

screen, you can print the label using the PRINT key. By pressing “F3 = VIEW”, the instrument shows the last recorded label. Move back and forward on the recorded screens using F1=PREV and F3=NEXT.

To return to standard measurement, press MEAS.

Continuous recording

This function memorizes the screens continuously according to an interval that can be set in the

menu. The logging starts by pressing the LOG key and ends by pressing the same key again: the

data memorized form a continuous block of data.

This mode has 1800 memory pages, 5 samples per page, for a total of 9000 samples.

The logging interval can be set from 0 to 999 seconds. To set it, open the menu “System Parameters >> Memory and Logging >> Log Interval”, (see the description of the menu items on

page 11). If the value 0 is set, the logging is disabled. The display will show “LOGGING

DISABLED”. The data stored in the memory can be transferred to a PC using the DeltaLog11 software (vers.

2.0 an later): please see the software HELP for the details.

To clear the memory (not the section reserved to single recording), use the Erase Log function (MENU >> System Parameters >> Memory and Logging >> Erase Log). The window to confirm the operation will appear: “ERASE LOG ???”. Press ESC to cancel the operation, ENTER to confirm.

- - 50

The instrument starts clearing the internal memory; at the end of the operation, it goes back to normal display.

NOTES:

• The data transfer carried out using the DeltaLog11 software does not cause the memory to be erased; the operation can be repeated as many times as required.

• The recorded data remain in the memory even if the instrument is turned off, if the recording was complete.

• Memory clearing can be performed only by the administrator (see page 17).

THE PRINT FUNCTION

The PRINT key sends the data present on the display when the key is pressed directly to the RS232, USB or Bluetooth port. The print data units of measurements are the same as those used on the display, as selected using the F1, F2 and F3 function keys.

To print a data contained in the memory section reserved to single records (logged using the MEM key), select the screen to be printed using MEM >> F3 = VIEW. Print the label using the PRINT key. For the details see the previous paragraph “Logging upon command”.

A 24 column printer with serial input can be connected to the MiniDin connector (e.g. the Delta Ohm 24 column printer code HD40.1 or HD40.2) using the HD2110CSNM cable.

The Bluetooth wireless connection requires installation of the HD22BT module (see the previous

chapter).

The Bluetooth connection disables the RS232C and USB ports.

NOTES:

• The print out performed using the PRINT key is formatted across 24 columns. The print out performed using the LOG key is formatted across 80 columns, therefore a standard printer is required.

• In order to print the data to a parallel interface printer, you must use a parallel-serial adaptor (not supplied).

• The direct connection between instrument and printer via a USB port does not work.

- - 51

Example of a printout obtained using the HD40.1 or HD40.2 printer

NOTES

HD 98569 Instrument model pH / chi / Oxy / temperature

Ser num=12345678 Instrument s erial number 2007 – 01 - 31 12:00:00

Current date and time in the format year-month-day hours:minutes:seconds

LAB POSITION #1 Denomination used for the instrument

Operator = Adm i nis tr a tor

Operator (Administrator or User_1, User_2, User_3 or Anonymous)

SAMPLE ID = 0000 00 01 Number of the sample

pH EL sernum = 01234567 Serial number of the pH electrode pH = 7.010 pH measurement pH out of calibration ! The calibration validity period has expired

(otherwise the calibration date is shown)

O2 EL sernum = 76543210 Serial number of the dissolved Oxygen probe mg/l O2 = 5.59 Measurement of the concentration of

dissolve d Ox y gen

chi EL sernum = 98756410 Conductivity probe serial number mS = 2.177 Conductivity measurement

Temp = 25.0°C ATC Temperature measurement

ATC = automatic compensation MTC = manual compensation

- - 52

Functioning Notes and Operating Safety

Authorized use

The instrument has been designed exclusively for laboratory measurements. Comply with the technical specifications outlined in the chapter TECHNICAL DATA on page 55. Its use is authorized only in conformity with the instructions written in this manual. Any different use is considered improper.

General instr uctions on security

This instrument has been manufactured and tested according to safety regulation EN 61010-1 concerning electronic measurement instruments and was delivered ex factory in perfect security conditions. Its regular functioning and operating security can be ensured only if all the normal safety measures as well as the specifications described in this manual are complied with. Its regular functioning and operating security is ensured only within the climatic conditions specified in the chapter TECHNICAL DATA on page 55.

If the instrument is moved from a cold to a hot environment, or vice versa, the condensation can disturb its functioning. You need to wait for the instrument to reach the environment temperature before using it.

User obligations

The user of the instrument must ensure that the following regulations and directives concerning the handling of hazardous materials are complied with:

 CEE directives on job safety  National laws on job safety  Accident prevention regulations  Security data from the manufacturers of chemical substances.

- - 53

HD22.2 Laboratory electrode holder with magnetic stirrer

HD22.3 Laboratory electrode holder

HD22.2

The HD22.2 is a laboratory electrode holder with an ultra slim magnetic stirrer. The height adjustable electrode holder supports two standard ∅ 12 mm electrodes. The stirring is performed by a small magnetic bar (not supplied) immersed in the liquid: The motion is generated by a rotary magnetic field controlled by microprocessor. There are no mechanically moving parts, therefore no maintenance is required. The rotational speed can constantly be adjusted from 15 to 1500 rpm. The HD22.2 has a modern and functional design. It is made of materials that resist to most chemical products: during use, control its compatibility.

Operation

 Insert the magnetic bar in the liquid container to be stirred.  Power the stirrer by directly connecting the SWD10 power supply 12Vdc output (optional).

 Turn the instrument on with the

key.

 Set the rotational speed to the minimum by holding the

key, until the LED located

between the

and keys stops blinking.

 Now put the liquid container, at the center of the base.

 Set the desired rotational speed by pressing the

and keys; during adjustment the

LED located between the two keys is blinking.

 The

key allows to invert the magnetic bar rotation. The lit LED between the and

keys, indicates that the inversion function is on; the rotation direction is automatically inverted

every 30 seconds.

The set speed and rotation direction remain in the memory also when the instrument is off. Upon power on, the rotation will progressively go back to the previously set speed.

Note: If a non circular rotational motion begins, due to irregularities in the bottom of the container

or the magnetic bar, use the

and keys to restore a circular motion. The electrode holder height can be adjusted. To set the desired height, press the button and slide the electrode holder along the staff.

HD22.3

The HD22.3 is a laboratory staff and electrode holder. Its height and depth can be adjusted. It can hold up to 5 standard ∅ 12 mm electrodes. The solid, fire-coated metal base, ensures stability even with 5 electrodes. The staff is fitted with hooks for cables and electrodes.

- - 54

Technical Information

HD22.2 HD22.3

Power 12Vdc, 200mA --Stirring speed 15…1500 rpm --Stirring capacity Max. 1000 ml --Stirring magnetic bar L = 30…40 mm, depending on

the application

---

Material Body ABS; staff AISI 304 Body ABS; base Fe 360 Painting --- Nickel plated and powder-

coated Weight 1150g 1900g Bearing surface

∅ 100 mm

---

Dimensions Base: 215x145x25 mm

Staff: height 380 mm

Height max. 450 mm.

Environment temperature, % RH

0…50 °C, max. 85% RH without condensation

No. of housings for the electrodes

Up to four ∅ 12 mm electrodes

and one ∅ 4.5 mm breakable to ∅ 12 mm

Protection degree IP65

HD22.2 HD22.3

- - 55

HD 98569 Technical characteristics

Measured quantities pH - mV

- Ω - TDS - NaCl

mg/l O

- %O2

°C - °F

Instrument

Dimensions (Length x Width x Height) 250x100x50mm Weight 640g (batteries included) Materials ABS, rubber Display Graphic, backlit display, 56x38 mm. 128x64 points.

Operating conditions

Operating temperature -5 … 50°C Warehouse temperature -25 … 65°C Working relative humidity 0 … 90% RH without condensation

Protection degree IP66

Power

Batteries 4 1.5V type AA batteries

Autonomy (when the probes are connected) 25 hours with 1800mAh alkaline batteries

Mains adapter (code SWD10) 12Vdc/1A (positive at centre)

Security of stored data Unlimited Time

Date and time Real time Accuracy 1min/month max. departure

Continuous recording (LOG key)

Quantity 9000 samples from the three inputs Type In 1800 pages containing 5 samples each Storage interval 1s … 999s

Logging up on c om m a nd (M EM key)

Quantity 200 samples from the three inputs Type In 200 pages containing 1 sample each

Storage of calibrations

pH and dissolved Oxygen Last 8 pH and dissolved Oxygen

calibrations. The last 2 calibrations are stored in the probe’s SICRAM memory.

Conductivity The last calibration is stored in the

probe’s SICRAM memory.

RS232C serial interface

Type RS232C electrically isolated Baud rate Can be set from 1200 to 38400 baud Data bit 8 Parity None Stop bit 1

- - 56

Flow Control Xon/Xoff Serial cable length Max. 15 m

USB interface

Type 1.1 - 2.0 electrically isolated

Bluetooth interface Optional, for PC fitted with Bluetooth input

or Bluetooth/RS232 HD USB.KL1 adaptor. The interface can be installed only by Delta Ohm

Connections

Enabled inputs for temperature probes pH/mV and O

inputs.

with SICRAM module pH/temperature input with SICRAM module 8-pole male DIN45326 connector Conductivity/temperature input with SICRAM module 8-pole male DIN45326 connector Dissolved Oxygen/temperature input with SICRAM module 8-pole male DIN45326 connector Serial interface RS232C/USB 8-pole female MiniDIN connector Bluetooth Optional Mains power supply 2-pole connector (Ø5.5mm - Ø2.1mm).

Positive at centre (e.g. SWD10).

• Measureme nt of pH by Inst rum e nt

Measurement range -9,999…+19.999pH Resolution 0.01 or 0.001pH selectable from menu Instrument accuracy ±0.001pH ±1digit

Input impedance >10

Ω Calibration error @25°C |Offset| > 20mV Slope > 63mV/pH or slope < 50mV/pH Sensitivity > 106.5% or sensitivity < 85% Calibration points Up to 5 points selected among 8

automatically detected buffer solutions Temperature compensation -50...150°C Standard solutions detected

automatically @25°C 1.679pH - 4.000pH - 4.010pH

6.860pH - 7.000pH - 7.648pH

9.180pH - 10.010pH

Measurement of mV by Instrument

Measurement range -1999.9 … +1999.9mV Resolution 0.1mV Instrument accuracy ±0.1mV ±1digit Drift after 1 year 0.5mV/year

- - 57

• Measureme nt of con ductivity by Instr ument Resolution

Measurement range (Kcell=0.01) 0.000…1.999μS/cm 0.001μS/cm

Measurement range (Kcell=0.1) 0.00…19.99μS/cm 0.01μS/cm Measurement range (Kcell=1) 0.0…199.9μS/cm 0.1μS/cm

200…1999μS/cm 1μS/cm

2.00…19.99mS/cm 0.01mS/cm

20.0…199.9mS/cm 0.1mS/cm Measurement range (Kcell=10) 200…1999mS/cm 1mS/cm Instrument accuracy (conductivity) ±0.5% ±1digit

Measurem e nt of resi stivity by Instr ument Resolution

Measurement range (Kcell=0.01) Up to 1GΩ⋅cm (∗)

Measurement range (Kcell=0.1) Up to 100MΩ cm (*)

Measurement range (Kcell=1) 5.0…199.9Ω⋅cm 0.1Ω⋅cm

200…999Ω⋅cm 1Ω⋅cm

1.00k…19.99kΩ⋅cm 0.01kΩ⋅cm

20.0k…99.9kΩ⋅cm 0.1kΩ⋅cm

100k…999kΩ⋅cm 1kΩ⋅cm 1…10MΩ⋅cm 1MΩ⋅cm

Measurement range (Kcell=10) 0.5…5.0Ω⋅cm 0.1Ω⋅cm Instrument accuracy (resistivity) ±0.5% ±1digit

Measurement of total dissolved solids (with coefficient

/TDS=0.5) Resolution

Measurement range (Kcell=0.01) 0.00…1.999mg/l 0.005mg/l Measurement range (Kcell=0.1) 0.00…19.99mg/l 0.05mg/l Measurement range (Kcell=1) 0.0…199.9 mg/l 0.5 mg/l 200…1999 mg/l 1 mg/l

2.00…19.99 g/l 0.01 g/l

20.0…199.9 g/l 0.1 g/l Measurement range (Kcell=10) 100…999 g/l 1 g/l Instrument accuracy (total dissolved solids) ±0.5% ±1digit

Measurem e nt of s ali ni ty Resolution

Measurement range 0.000…1.999g/l 1mg/l

2.00…19.99g/l 10mg/l

20.0…199.9 g/l 0.1 g/l Instrument accuracy (salinity) ±0.5% ±1digit

(∗) The resistivity measurement is defined as the reciprocal of conductivity: the resistivity indication, near bottom scale, will appear as in the following table.

K cell = 0.01 cm-1 K c ell = 0.1 cm-1

Conductivity

(μS/cm)

Resistivity

(MΩ⋅cm)

Conductivity

(μS/cm)

Resistivity

(MΩ⋅cm)

0.001 μS/cm 1000 MΩ⋅cm

0.01 μS/cm 100 MΩ⋅cm

0.002 μS/cm 500 MΩ⋅cm

0.02 μS/cm 50 MΩ⋅cm

0.003 μS/cm 333 MΩ⋅cm

0.03 μS/cm 33 MΩ⋅cm

0.004 μS/cm 250 MΩ⋅cm

0.04 μS/cm 25 MΩ⋅cm

… … … …

- - 58

Automatic / manual tempera tur e compensati on 0...100°C with α

= 0.00…4.00%/°C

Reference temperature 0…50°C (default 20°C or 25°C)

TDS conversion factor 0.4…0.8

Allowed cell constant K (cm

-1

) 0.01…20.00

Standard solutions automatically detected (@25°C)

147μS/cm

1413μS/cm

12880μS/cm

111800μS/cm

• Measurement of the concentration of dissolved Oxygen

Measurement range 0.00…90.00mg/l Resolution 0.01mg/l Instrument accuracy ±0.03mg/l ±1digit (60...110%, 1013mbar,

20...25°C)

Measurement of the saturation index of dissolved Oxygen

Measurement range 0.0…600.0% Resolution 0.1% Instrument accuracy ±0.3% ±1digit (in the range 0.0…199.9%) ±1% ±1digit (in the range 200.0…600.0%)

Setting the salinity

Setting Direct in the menu, or automatic by

conductivity measurement Measurement range 0.0…70.0g/l Resolution 0.1g/l

Temperature measurement with the sensor inside the O

probe

Measurement range 0.0…45.0°C Resolution 0.1°C Instrument accuracy ±0.1°C Drift after 1 year 0.1°C/year

Automatic temperature compensation 0…50°C

• Measureme nt of tem p er ature by Instr um en t

Pt100 measurement range -50…+150°C Resolution 0.1°C Instrument accuracy ±0.1°C ±1digit Drift after 1 year 0.1°C/year

- - 59

Technical data in line probes for the HD 98569 instrument

pH / mV

SICRAM KP471 module to connect the pH electrodes and the S7 connector

KP471...

Please see the technical

characteristics of the electrode

connected to the module.

Cable length: KP471.1 1m KP471.2 2m KP471.5 5m

pH electrodes to be connected to the KP471 SICRAM module

ORDER CODE

MEASUREMENT RANGE AND

USE

DIMENSIONS

KP20

0…14pH / 0…80°C / 3bar

Body in glass - GEL

1 diaphragm in ceramic Waste water, drinking water, colours, aqueous emulsions,

electroplating waters, fruit-

juices, stock waters, titration,

varnishes.

KP50

0…14pH / 0…80°C / 3bar

Body in glass - GEL

1 Teflon ring diaphragm

Varnishes, cosmetics, aqueous

emulsions, electroplating

waters, creams, deionised

water, TRIS buffer, drinking

water, stock waters, fruit-juices,

low ionic content solutions,

mayonnaise, preserved foods,

colours, titration, titration in non

water solutions, stock waters,

soaps, waste water, viscous

samples.

KP61

2…14pH / 0…80°C / 3bar

Body in glass

Liquid reference

3 diaphragms in ceramic

Waste water, dough, bread,

fruit-juices, varnishes,

cosmetics, creams, deionised

water, drinking water, aqueous

emulsions, electroplating

waters, soaps, yogurt, milk,

titration, titration in non water

solutions, stock waters,

mayonnaise, wine, low ionic

content solutions, butter, protein

samples, colours, viscous

samples.

- - 60

ORDER CODE

MEASUREMENT RANGE AND

USE

DIMENSIONS

KP62

0…14pH / 0…80°C / 3bar

Body in glass - GEL

1 diaphragm in ceramic

Colours, varnishes, drinking

water, aqueous emulsions, fruit-

juices, electroplating waters, stock waters, titration, waste

water.

KP64

0…14pH / 0…80°C / 0.1bar

Body in glass

Liquid reference KCl 3M

Teflon ring diaphragm

Colours, varnishes, cosmetics,

creams, deionised water,

drinking water, aqueous

emulsions, fruit-juices, soaps,

low ionic content solutions,

preserved foods, stock waters,

titration, titration in non water

solutions, TRIS buffer, waste

water, viscous samples, wine.

KP70

2…14pH / 0…50°C / 0.1bar

Body in epoxy - GEL

1 open hole

Dough, bread, colours,

varnishes, cosmetics, creams,

drinking water, aqueous

emulsions, fruit-juices,

electroplating waters, soaps,

mayonnaise, preserved foods,

cheese, milk, stock waters,

viscous samples, waste water,

butter, yogurt.

KP80

2…14pH / 0…60°C / 1bar

Body in glass - GEL

1 open hole

Dough, bread, colours,

varnishes, cosmetics, creams,

drinking water, aqueous

emulsions, fruit-juices,

electroplating waters, soaps,

mayonnaise, preserved foods,

stock waters, titration, titration in

non water solutions, viscous

samples, waste water, yogurt,

milk, butter.

KP100

0…14pH / 0…80°C / 1bar

Body in glass - Liquid reference

KCl 3M

1 Teflon ring diaphragm

For leather, paper.

- - 61

Redox electrode to be connected to the KP471 SICRAM module

ORDER CODE

MEASUREMENT RANGE

AND USE

DIMENSIONS

KP90

±2000mV

0…80°C

5bar

Body in glass

Liquid reference

KCl 3M

General use.

pH electrodes complete with SICRAM module

CODICE DI

ORDINAZIONE

CAMPO DI MISURA

ED IMPIEGO

DIMENSIONI

KP50TS

0…14pH / 0…80°C / 3bar

Body in glass - GEL

1 Teflon ring diaphragm

Cable L = 1m

Varnishes, cosmetics, aqueous

emulsions, electroplating

waters, creams, deionised

water, TRIS buffer, drinking

water, fruit-juices, low ionic

content solutions, mayonnaise,

preserved foods, colours,

titration, titration in non water solutions, stock waters, soaps, waste water, viscous samples.

KP63TS

0…14pH / 0…80°C / 1bar

Body in glass.

Pt100 sensor

Liquid reference KCl 3M

1 diaphragm in ceramic

Cable L = 1m

Colours, varnishes, drinking

water, aqueous emulsions,

fruit-juices, electroplating

waters, stock waters, titration,

waste water.

- - 62

2 AND 4-ELECTRODE CONDUCTIVITY PROBES FOR HD 98569

Conductivity probes with SICRAM module

ORDER CODE

MEASUREMENT RANGE

AND USE

DIMENSIONS

SP06TS

K=0.7

5μS/cm …200mS/cm

0…90°C

4-electrode cell

in Platinum

Pocan probe material

General use

Not heavy duty

Pt100 sensor

Ø 17

156

Ø 12

16 50

D=5

SPT401.001S

K=0.01

0.04μS/cm …20μS/cm 0…120°C

2-electrode cell AISI 316

Ultra pure water

Closed-cell measurement

Pt100 sensor

Cable length 2m.

SPT01GS

K=0.1

0.1μS/cm …500μS/cm

0…80°C

2-electrode cell

in Platinum wire

Glass probe material

Pure water

Pt100 sensor

SPT1GS

K=1

10μS/cm …10mS/cm

0…80°C

2-electrode cell

in Platinum wire

Glass probe material

General heavy duty use,

medium conductivity

Pt100 sensor

SPT10GS

K=10

500μS/cm …200mS/cm

0…80°C

2-electrode cell

in Platinum wire

Glass probe material

General heavy duty use, high

conductivity

Pt100 sensor

- - 63

DISSOLVED OXYGEN PROBES FOR HD 98569

Model DO9709 SS DO9709 SS.5 DO9709 SS.1 DO9709 SS.5.1 Type

Polarographic probe,

Silver anode, Platinum cathode

Galvanic probe,

Zinc anode, Silver cathode

Range O2

0.00…60.00mg/l 0.00…20.00mg/l

Operating temperature

0…45°C 0…50°C

Accuracy

±1% f.s. ±2% f.s.

Membrane

Replaceable Replaceable

Cabl e length

2m 5m

(*)

2m 5m

(*)

Cable with connector

DO9709SS

DO9709SS.5

DO9709SS.1

DO9709SS.5.1

- - 64

TEMPERATURE PROBES Pt100 USING SICRAM MODULE

Model Type Application range Accuracy

TP472I

Immersion -196°C…+500°C

±0.25°C (-196°C…+300°C)

±0.5°C (+300°C…+500°C)

TP472I.0

1/3 DIN – Thin Film

Immersion -50°C…+300°C ±0.25°C

TP473P.I

Penetration -50°C…+400°C

±0.25°C (-50°C…+300°C)

±0.5°C (+300°C…+400°C)

TP473P.0

1/3 DIN - Thin Film

Penetration -50°C…+300°C ±0.25°C

TP474C.I

Contact -50°C…+400°C

±0.3°C (-50°C…+300°C)

±0.5°C (+300°C…+400°C)

TP474C.0

1/3 DIN - Thin Film

Contact -50°C…+300°C ±0.3°C

TP475A.0

1/3 DIN - Thin Film

Air -50°C…+250°C ±0.3°C

TP472I.5

Immersion -50°C…+400°C

±0.3°C (-50°C…+300°C)

±0.6°C (+300°C…+400°C)

TP472I.10

Immersion -50°C…+400°C

±0.3°C (-50°C…+300°C)

±0.6°C (+300°C…+400°C)

TP49A.O

Class A - Thin Film

Immersion -70°C…+250°C ±0.25°C

TP49AC.O

Class A - Thin Film

Contact -70°C…+250°C ±0.25°C

TP49AP.O

Class A - Thin Film

Penetration -70°C…+250°C ±0.25°C

TP875.I

Globe-thermometer

Ø 150 mm

-30°C…+120°C ±0.25°C

TP876.I

Globe-thermometer

Ø 50 mm

-30°C…+120°C ±0.25°C

TP87.O

1/3 DIN - Thin Film

Immersion -50°C…+200°C ±0.25°C

TP878.O

1/3 DIN - Thin Film

Photovoltaic +4°C…+85°C ±0.25°C

TP878.1.O

1/3 DIN - Thin Film

Photovoltaic +4°C…+85°C ±0.25°C

TP879.O

1/3 DIN - Thin Film

Compost -20°C…+120°C ±0.25°C

Temperature drift @ 20°C 0.003%/°C

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Order codes

HD 98569 The kit is composed of the HD 98569 datalogger instrument for pH - redox -

conductivity - resistivity - TDS - salinity - dissolved Oxygen concentration saturation index - temperature measurements, 4 1.5V type AA batteries, HD9709/20 (for polarographic probe) or DO9709/21 (for galvanic probe) calibrator, operating manual, case and DeltaLog11 software (vers. 2.0 and later), case and SICRAM pH471.1 module (cable 1 meter).

The pH/mV electrodes, conductivity probes, dissolved oxygen probes, temperature probes, standard reference solutions for different measurement types, serial and USB connection cables for data download to PC or printer have to be ordered separately.

HD2110CSNM 8-pole MiniDin - Sub D 9-pole female connection cable for PC and printer with

RS232C input.

HD2101/USB Connection cable USB 2.0 connector type A - 8-pole MiniDin, for PC with USB

input.

DeltaLog11 Additional copy of the software (vers. 2.0 and later) for download and

management of the data on PC using Windows (from 98) operating systems.

SWD10 Stabilized power supply at 100-240Vac/12Vdc-1A mains voltage. HD40.1 The kit includes: 24-column portable thermal printer, serial interface, 57mm

paper width, four NiMH 1.2V rechargeable batteries, SWD10 power supply, instruction manual, 5 thermal paper rolls.

HD40.2 The kit includes: 24-column portable thermal printer, serial and Bluetooth

interface, 57mm paper width, four NiMH 1.2V rechargeable batteries, SWD10 power supply, instruction manual, 5 thermal paper rolls.

BAT.40 Spare battery pack for HD40.1 and HD40.2 printers with in-built temperature

sensor.

RCT The kit includes 4 thermal paper rolls 57mm wide and 32mm in diameter. HD22.2 Laboratory electrode holder composed of basis plate with incorporated

magnetic stirrer, staff and replaceable electrode holder. Height max. 380mm. For ∅12mm electrodes.

HD22.3 Laboratory electrode holder with metal base. Electrode holder with flexible arm

for free positioning. For ∅12mm electrodes.

HD22BT Bluetooth module for wireless data transmission from instrument to PC The

module installation is carried out exclusively by Delta Ohm, when placing the order

HD USB . K L 1 USB/Bluetooth converter to connect to the PC for wireless connection of the

instrument using the HD22BT module.

SICRAM module with S7

input for pH electrodes

KP471.1 SICRAM module for pH electrode with standard S7 connection, cable L=1m. KP471.2 SICRAM module for pH electrode with standard S7 connection, cable L=2m. KP471.5 SICRAM module for pH electrode with standard S7 connection, cable L=5m.

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pH electrodes to be connected to the KP471 SICRAM module KP20 Combined general use pH electrode, gel-filled, with screw connector S7, body in

Epoxy.

KP 50 Combined pH electrode for general use, varnishes, emulsions, gel-filled, with

screw connector S7, body in glass.

KP 61 Combined pH electrode, 3 diaphragms for milk, cream, etc. with screw

connector S7, body in glass.

KP62 Combined pH electrode, 1 diaphragm for pure water, paints, etc. gel-filled, with

screw connector S7, body in glass.

KP 64 Combined pH electrode for water, varnishes, emulsions, etc. with screw

connector S7, KCl 3M electrolyte, body in glass.

KP70 Combined pH electrode, micro Ø 6.5mm, gel-filled, for milk, bread, cheese, etc.

with screw connector S7, body in glass.

KP80 Combined pointed pH electrode, gel-filled, with screw connector S7, body in

glass.

KP 100 Combined pointed pH electrode, flat membrane, liquid reference, with screw

connector S7, body in glass, for leather, paper.

ORP

ELECTRODES TO BE CONNECTED TO THE KP471 SICRAM MODULE

KP90 REDOX PLATINUM electrode for general use, with screw connector S7, KCl 3M

electrolyte, body in glass.

PH ELECTRODE WITH SICRAM MODULE

KP 50TS Combined pH/temperature electrode, gel-filled, with SICRAM module, body in

glass, for general use, Pt100 sensor, for varnishes, emulsions. Cable length 1m.

KP63TS Combined pH/temperature electrode, Pt100 sensor, with SICRAM module, body

in glass, Ag/AgCl sat KCl.

STANDARD SOLUTIONS

HD8642 Buffer solution 4.01pH - 200cc. HD8672 Buffer solution 6.86pH - 200cc. HD8692 Buffer solution 9.18pH - 200cc.

EDOX STANDARD SOLUTIONS

HDR220 Redox buffer solution 220mV 0.5 l. HDR468 Redox buffer solution 468mV 0.5 l.

LECTROLYTE SOLUTIONS

KCL 3M 50ml ready solution for electrode refilling.

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AINTENANCE AND CLEANING

HD62PT Diaphragm cleaning solution (Tiourea in HCl) – 200ml. HD62PP Diaphragm cleaning solution (Pepsina in HCl) – 200ml. HD62RF Electrode regeneration solution (Fluorhydric Acid) – 100ml. HD62SC Electrode preservation solution – 200ml.

COMBINED CONDUCTIVITY AND TEMPERATURE PROBES USING SICRAM MODULE SP06TS Conductivity/temperature combined probe, 4-electrode cell in Platinum, body in

Pocan. Cell constant K=0.7. Measuring range 5μS/cm …200mS/cm, 0…90°C.

SPT401.001S Conductivity/temperature combined probe, 2-electrode cell in AISI 316 steel.

Cell constant K=0.01. Cable length 2m.

Measuring range 0.04μS/cm …20μS/cm, 0…120°C. Closed-cell measurement. SPT01GS Conductivity/temperature combined probe 2-electrode cell in Platinum wire,

body in glass. Cell constant K=0.1. Measuring range 0.1μS/cm …500μS/cm, 0…80°C.

SPT1GS Conductivity/temperature combined probe 2-electrode cell in Platinum wire,

body in glass. Cell constant K=1. Measuring range 10μS/cm …10mS/cm, 0…80°C.

SPT10GS Conductivity/temperature combined probe 2-electrode cell in Platinum wire,

body in glass. Cell constant K=10. Measuring range 500μS/cm …200mS/cm, 0…80°C.

TANDARD CONDUCTIVITY CALIBRATION SOL UTIONS

HD8747 Standard calibration solution 0.001 mol/l equal to 147μS/cm @25°C - 200cc. HD8714 Standard calibration solution 0.01 mol/l equal to 1413μS/cm @25°C - 200cc. HD8712 Standard calibration solution 0.1 mol/l equal to 12880μS/cm @25°C - 200cc. HD87111 Standard calibration solution 1 mol/l equal to 111800μS/cm @25°C - 200cc.

OMBINED DISSOLVED OXYGEN/TEMPERATURE PROBES

DO9709 SS Polarographic combined probe for measurement of O

and temperature with replaceable membrane. The kit includes: three membranes, zero solution, electrolyte solution. Cable length 2m. Dimensions Ø 12mm x 120mm.

DO9709 SS.5 P olarogra phic combined probe for measurement of O

and temperature with

connector, replaceable membrane. The kit includes: three membranes, zero

solution, electrolyte solution. Cable length 5m. Dimensions Ø 12mm x 120mm.

DO9709 SS.1 Galvanic combined probe for measurement of O

and temperature with replaceable membrane. The kit includes: three membranes, zero solution, electrolyte solution. Cable length 2m. Dimensions Ø 12mm x 76mm. Membrane holder Ø 16mm.

DO9709 SS.5.1 Galvanic combined probe for measurement of O

and temperature with

connector, replaceable membrane. The kit includes: three membranes, zero

solution, electrolyte solution. Cable length 5m. Dimensions Ø 12mm x 76mm. Membrane holder Ø 16mm.

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CCESSORIES FOR THE COMBINED DISSOLVED OXYGEN PROBES

DO9709 SSK Accessories kit for the DO9709 SS and DO9709 SS.5 probes consisting of two

membranes, zero solution, electrolyte solution.

DO9709/20 Calibrator for DO9709 SS and DO9709 SS.5 polarographic probes. DO9701 Electrolyte solution for DO9709 SS and DO9709 SS.5 polarographic probes. DO9709/21K Accessories kit for the DO9709 SS.1 and DO9709 SS.5.1 probes consisting of

two membranes, zero solution, electrolyte solution.

DO9709/21 Calibrator for DO9709 SS.1 and DO9709 SS.5.1 galvanic probes. DO9701.1 Electrolyte solution for DO9709 SS.1 and DO9709 SS.5.1 galvanic probes. DO9700 Zero oxygen solution.

EMPERATURE PROBES COMPLETE WITH SICRAM MODULE

TP472I Immersion probe, sensor Pt100. Stem Ø 3 mm, length 300 mm. Cable length 2

metres.

TP472I.0 Immersion probe, sensor Pt100. Stem Ø 3 mm, length 230 mm. Cable length 2

metres.

TP473P.I Penetration probe, sensor Pt100. Stem Ø 4mm, length 150 mm. Cable length 2

metres.

TP473P.0 Penetration probe, sensor Pt100. Stem Ø 4mm, length 150 mm. Cable length 2

metres.

TP474C.I Contact probe, sensor Pt100. Stem Ø 4 mm, length 230 mm, contact surface Ø

5mm. Cable length 2 metres.

TP474C.0 Contact probe, sensor Pt100. Stem Ø 4 mm, length 230 mm, contact surface Ø

5 mm. Cable length 2 metres.

TP475A.0 Air probe, sensor Pt100. Stem Ø 4 mm, length 230 mm. Cable length 2 metres. TP472I.5 Immersion probe, sensor Pt100. Stem Ø 6 mm, length 500 mm. Cable length 2

metres.

TP472I.10 Immersion probe, sensor Pt100. Stem Ø 6 mm, length 1000 mm. Cable length 2

metres.

TP49A.O Immersion probe, sensor Pt100. Stem Ø 2.7 mm, length 150 mm. Cable length

2 metres. Aluminium handle.

TP49AC.O Contact probe, sensor Pt100. Stem Ø 4 mm, length 150 mm. Cable length 2

metres. Aluminium handle.

TP49AP.O Penetration probe, sensor Pt100. Stem Ø 2.7 mm, length 150 mm. Cable length

2 metres. Aluminium handle.

TP875.I Globe-thermometer Ø 150 mm with handle. Cable length 2 metres. TP876.I Globe-thermometer Ø 50 mm with handle. Cable length 2 metres. TP87.O Immersion probe, sensor Pt100. Stem Ø 3 mm, length 70 mm. Cable length 2

metres.

TP878.O Contact probe for solar panels. Cable length 2 metres. TP878.1.O Contact probe for solar panels. Cable length 5 metres. TP879.O Penetration probe for compost. Stem Ø 8 mm, length 1 metre. Cable length 2

metres.

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TABLE OF CONTENTS

Introduction................................................................................................................................................ 4

Display Descriptio n ................................................................................................................................... 5

Keyboard description................................................................................................................................7

Menu description ......................................................................................................................................11

User Management.....................................................................................................................................17

Settings ..................................................................................................................................................17

Access modes ........................................................................................................................................17

Functions reserved to the administrator...................................................................................................18

pH measurement.......................................................................................................................................19

Automatic or manual temperature compensation for pH measurement................................................20

pH electrode calibration ......................................................................................................................21

Calibration procedure .........................................................................................................................21

Temperature characteristics of Delta OHM standard solutions ............................................................23

Conductivity measurement ......................................................................................................................24

Automatic or manual temperature compensation for conductivity measurement ..................................25

Resistivity, TDS and salinity measurements........................................................................................26

Calibration of conductivity ...................................................................................................................26

Automatic calibration of conductivity using memorized standard solutions ...........................................26

Manual calibration of conductivity using not-memorized standard solutions .........................................28

Table of standard solutions at 147μS/cm, 1413μS/cm, 12880μS/cm and 111800μS/cm......................30

Measurement of the dissol ved Oxygen ...................................................................................................31

How to measure .................................................................................................................................31

Calibration of the dissolved Oxygen probe ..........................................................................................32

Electrolyte solution and/or membrane replacement.............................................................................33

Check the probe's status ....................................................................................................................34

Control the zero of the probe ..............................................................................................................34

Dissolved Oxygen probe storage ........................................................................................................34

Polarographic probe and galvanic probe: differences ..........................................................................34

Temperature measu rement ......................................................................................................................35

How to measure .................................................................................................................................35

Warnings and operating instructions on the temperature sensors........................................................36

Instrument storage ...................................................................................................................................37

pH, conductivi t y and disso lved Oxygen measurements - Most frequent p rob lems, possible causes

and handl ing .............................................................................................................................................38

Instrument functioning ........................................................................................................................38

pH measurement................................................................................................................................38

Conductivity measurement .................................................................................................................38

Measurement of the dissolved Oxygen ...............................................................................................39

Instrument Signals and Faults.................................................................................................................40

Battery symbol and bat tery replacement.................................................................................................41

Serial interface and US B...........................................................................................................................43

Connection to a PC...................................................................................................................................46

Connection to the RS232C serial port .....................................................................................................46

Connection to the USB 2.0 port...............................................................................................................46

Bluetooth Connection..............................................................................................................................48

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Storing and Transferring Data to a PC.....................................................................................................49

The Record Functions.............................................................................................................................49

The PRINT function ................................................................................................................................50

Functioning Notes and Operating Safety.................................................................................................52

HD22.2 Laboratory electrode holder with magnetic stirrer....................................................................53

HD22.3 Laboratory electrode holder.......................................................................................................53

HD 98569 Technical ch aract eristics .........................................................................................................55

Technical data in line probes for the HD 98569 instrument ......................................................................59

2 and 4-electrode conductivity probes for HD 98569 ...............................................................................62

Dissolved Oxygen probes for HD 98569..................................................................................................63

Temperature probes Pt100 using SICRAM module .................................................................................64

Order codes ..............................................................................................................................................65

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CERTIFICATO DI CONFORMITÀ DEL COSTRUTTORE

MANUFACTURER’S CERTIFICATE OF CONFORMITY

rilasciato da

issued by

DELTA OHM SRL STRUMENTI DI MISURA

DATA

DATE

2007/10/30

Si certifica che gli strumenti sotto riportati hanno superato positivamente tutti i test di produzione e sono conformi alle specifiche, valide alla data del test, riportate nella documentazione tecnica.

We certify that below mentioned instruments have been tested and passed all production tests, confirming compliance with the manufacturer's published specification at the date of the test.

La riferibilità delle misure ai campioni internazionali e nazionali è garantita da una catena di riferibilità che ha origine dalla taratura dei campioni di prima linea dei laboratori accreditati di Delta OHM presso l’Istituto Primario Nazionale di Ricerca Metrologica.

The traceability of measures assigned to international and national reference samples is guaranteed by a reference chain which source is the calibration of Delta OHM accredited laboratories reference samples at the Primary National Metrological Research Institute.

Tipo Prodotto: Misuratore di pH, conducibilità, ossigeno disciolto e

temperatura

Product Type: pH, conductivity, dissolved oxygen and temperature meter

Nome Prod otto:

HD98569

Product Name:

DELTA OH M SRL 35030 Caselle di Selvazzano (PD) Italy Via Marconi, 5

Tel. +39.0498977150 r.a. - Telefax +39.049635596 Cod. Fisc./P.Iva IT03363960281 - N.Mecc. PD0 44279 R.E.A. 306030 - ISC. Reg. Soc. 68037/1998

- - 72

WARRANTY

TERMS OF WARRANTY

All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement. Complete replacement is excluded and no damage claims are accepted. The DELTA OHM guarantee only covers instrument repair. The guarantee is void in case of incidental breakage during transport, negligence, misuse, connection to a different voltage than that required for the appliance by the operator. Finally, a product repaired or tampered by unauthorized third parties is excluded from the guarantee. The instrument shall be returned FREE OF SHIPMENT CHARGES to your dealer. The jurisdiction of Padua applies in any dispute.

The electrical and electronic equipment marked with this symbol cannot be disposed of in public landfills. According to the UE Directive 2002/96/EC, the European users of electrical and electronic equipment can return it to the dealer or manufacturer upon purchase of a new one. The illegal disposal of electrical and electronic equipment is punished with an administrative fine.

This guarantee must be sent together with the instrument to our service centre. IMPORTANT: Guarantee is valid only if coupon has been correctly filled in all details.

Instrument code



HD98569

Seri al Numb er

RENEWALS

Date Date Inspector Inspector

CE CONFORMITY

The product complies with 2004/108/CE (EMC) and 2006/95/CE (low voltage) directives, and meets the requirements of the following technical standards:

Safety EN61010-1 Electrostatic discharge immunity test EN61000-4-2 Level 3 Radiated, radio-frequency, electromagneti c field immunity EN61000-4-3 Level 3 Electrical fast transient/burst immunity EN61000-4-4 Level 3 Immunity to conducted disturbances, induced by RF fields EN61000-4-6 Voltage dips, short interruptions and vo ltage va riati ons immu nity EN61000-4-11 Radio disturbance characteristics (conducted and radiated emissions) EN55022:2007 class B

Delta OHM HD 98569 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual