DeltaOHM HD2259.2 Operating Manual

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- 2 - V1.4 TABLE OF CONTENTS INTRODUCTION........................................................................................................................................................... 7 DISPLAY DESCRIPTION ............................................................................................................................................... 8 KEYBOARD DESCRIPTION ..........................................................................................................................................15 MENU DESCRIPTION ........................................................................................... ...

- 3 - V1.4 FUNCTIONING NOTES AND OPERATING SECURITY ....................................................................................................57 HD22.2 LABORATORY ELECTRODE HOLDER WITH MAGNETIC STIRRER ....................................................................58 HD22.3 LABORATORY ELECTRODE HOLDER .............................................................................................................58 COMMON TECHNICAL CHARACTERISTICS OF THE HD22… SERIES ............................................................................60 HD2259.2 TECHNICAL CHARACTERISTICS PH - MV - MG/L O2 - %O2 - MBAR - ° ...

- 4 - V1.4 HD2259.2 pH – Dissolved Oxygen – Temperature HD22569.2 pH – Conductivity – Dissolved Oxygen – Temperature 1. LCD Display 2. CONTRAST+ key, allows to increase the display contrast. 3. CONTRAST- key, allows to decrease the display contrast. 4. Function keys F1, …, F5. 5. ID key, allows to set the sample identifier number. 6. LOG key: starts and ends the saving of the data in the internal memory. 7.  key: in the menu, increases the current value. 8. ENTER key: in the menu confirms the current selection, during measurement returns the date and time. 9.  key: in the menu, moves the cursor leftwards. 10. ESC ...

- 5 - V1.4 HD2259.2 connectors: pH – Dissolved Oxygen – Temperature 20. Power supply input 12Vdc for the ∅ 5.5mm - 2.1mm connector. Positive at centre. 21. RS232C serial port, sub D 9-pole male connector. 22. 8-pole DIN45326 connector, input for Pt100 temperature probes with SICRAM module, 4-wire direct Pt100 probes, 2-wire direct Pt1000 probes 5. 23. 8-pole DIN45326 connector, for the combined pH/mV/temperature electrode with SICRAM module 3. 24. Socket for ∅ 4mm standard plug for the reference electrode pH/ISE. 25. BNC connector for the pH/mV electrode 1. 26. Auxiliary power supply output 12Vdc/200mA max. for the stir ...

- 6 - V1.4 HD22569.2 connectors: pH – Conductivity – Dissolved Oxygen – Temperature 20. Power supply input 12Vdc for the ∅ 5.5mm - 2.1mm connector. Positive at centre. 21. RS232C serial port, sub D 9-pole male connector. 22. 8-pole DIN45326 connector, input for combined 4-ring or 2-ring conductivity/temperature probes complete with SICRAM module i. 23. 8-pole DIN45326 connector, input for Pt100 temperature probes with SICRAM module, 4 wire direct Pt100 probes, 2 wire direct Pt1000 probes 5. 24. 8-pole DIN45326 connector, for the combined pH/mV/temperature electrode with SICRAM module 3. 25. Socket for ∅ 4mm standard p ...

- 7 - V1.4 INTRODUCTION The HD2259.2 and HD2569.2 are laboratory instruments for electrochemical measurements: pH, conductivity, dissolved Oxygen and temperature. They are fitted with a large backlit LCD display. The HD2259.2 measures pH, mV, redox potential (ORP) using pH, redox electrodes, separate reference electrodes or combined pH/temperature probes complete with SICRAM module; concentration of dissolved Oxygen in liquids (mg/l), saturation index (%) and temperature using SICRAM combined probes of polarographic, with two or three electrodes, and galvanic type with integrated temperature sensor. The HD22569.2 measures pH, m ...

- 8 - V1.4 DISPLAY DESCRIPTION HD2259.2 HD22569.2 The above appears when you turn the instrument on. The display is backlit. The contrast level is adjusted using CONTRAST+ and CONTRAST-. The display has three lines described below: First line HD2259.2 It indicates, from left to right: 1. The pH or mV value measured by the electrode connected to the BNC input c, or by the SICRAM pH/temperature probe connected to the input e, 2. The dissolved Oxygen concentration value (mg/l) or the saturation index (%) measured by the SICRAM probe connected to the input 6, 3. The temperature value used to compensate the pH and/or dissolved Oxyge ...

- 9 - V1.4 HD22569.2 It indicates, from left to right: 1. The pH or mV value measured by the electrode connected to the BNC input c, or by the SICRAM pH/temperature probe connected to the input e, 2. The conductivity, resistivity, TDS, NaCl concentration measured by the conductivity probe, with SICRAM module, connected to the input i, or by the direct probe, without SICRAM module, connected to the input j, 3. The dissolved Oxygen concentration value (mg/l) or the saturation index (%) measured by the SICRAM probe connected to the input 6. ...

- 10 - V1.4 Central line HD2259.2 HD22569.2 It indicates, from left to right: 4. The symbol indicates the quality of the pH electrode connected to the inputs c or e, or the CAL blinking message if the probe connected to the pH input is not calibrated. The symbol shows an electrode that gets “empty” as its efficiency decreases. 5. The dissolved Oxygen probe calibration coefficient (SLOPE): this value must be between 0.500 and 1.500. A value close to 1.500 indicates an exhausted probe. 6. The EPT (End PoinT) symbol indicates the display mode. The mode selection is done using the ENDPNT function key (SHIFT/FNC key >> F4 key). ...

- 11 - V1.4 2 digit 10s t pH pH1 The reference stability range has a span of 2 digits. When recording is started (Logging), the ENDPNT function switches automatically to DIR. 7. 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 temperature value. MTC means manual compensation: there are no temperature sensors; the temperature used for compensation is typed using the k ...

- 12 - V1.4 Bottom line HD2259.2 HD22569.2 The following is reported in the bottom line: 9. Identifier ID of the sample being measured: the automatically increased progressive number associated with the PRINT and MEM functions. The identifier is indicated in the printout and in the recorded samples together with the date, time and measured values. To set the number associated to the first sample, press ID, then use the  and  arrows to select the desired number: confirm by pressing ENTER. This parameter can be modified only by the administrator (see page 22). If the EPT option is set to DIR (see point 6 in this chapter), each ...

- 13 - V1.4 Function keys The bottom line is associated to the F1, …, F5 function keys. When you turn the instrument on, the following messages appear. HD2259.2 HD22569.2 13. F1. If you press it repeatedly, it changes the unit of measurement of the electrode connected to the BNC input c or of the SICRAM pH probe connected to the input 3 between pH, mV, or no indication. 14. F2. HD2259.2 Model - If you press it repeatedly, it changes the measurement performed on the SICRAM probe connected to the input 6, between dissolved Oxygen concentration in liquids (mg/l), saturation index (%), or no indication in absence of the connected ...

- 14 - V1.4 By pressing the SHIFT/FNC key, you can access the secondary functions linked to the F1, …, F5 function keys. 18. F1 = M-STOR - Stores the current information. It performs the same function as the MEM key. When EPT is different from DIR (see point 6), the logging is disabled until the measurement is stable: M-STOR is displayed only when the measurement is stable. 19. F3 = MEAS - Allows to perform or repeat a new measurement, when the EPT = AUTO, MAN or TIME modes are selected (see point 6). 20. F4 = ENDPNT - Selects the displayed measurement update mode (see point 6) 21. F5 = M-VIEW - Allows to display the stored d ...

- 15 - V1.4 KEYBOARD DESCRIPTION Each key specific function is described in detail below. ON-OFF key The instrument is turned on and off using the ON/OFF key. Press this key for at least two seconds. A subsequent press of the ON-OFF key sets the instrument in standby mode: the message “STANDBY” scrolls on the display. 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 them when the instrument is off. If a probe is connected and the instrument is on, it is ...

- 16 - V1.4 CONTRAST- key This key allows to decrease the display contrast. … Function keys F1, …, F5 The function of the F1, …, F5 keys is described by the message near each key in the bottom line of the display. A complete description of these keys is reported on page 13. SHIFT/FNC key The F1…F5 keys have two functions: the main and the secondary functions. By pressing the SHIFT/FNC key, you can toggle between the two functions. 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 >> Logging Options >> Sel ...

- 17 - V1.4 HELP key It displays a short help on the instrument’s main functions. Press ESC to go back to standard measurement. Use ENTER to browse the HELP items. CAL key Starts the pH electrodes, conductivity probe or dissolved Oxygen probe calibration procedure (see the chapter dedicated to calibration on page 26). ENTER key In the menu, the ENTER key confirms the current parameter. During measurement, The ENTER key displays the current date and time in the central line for few seconds. ESC key In the menu, the key clears or cancels the active function. MEM key It stores the displayed data. The data refer to the following ...

- 18 - V1.4 MENU DESCRIPTION The SETUP key is used to access the menu main screen. To select one item, use the arrow keys ( and ). 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 parameters can be changed only by an user registered as “Administrator” (see the details on page 22). Language se ...

- 19 - V1.4 3. “SYSTEM PARAMETERS” 3.1. “Date and Time” – This function 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 SETUP 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 SETUP. This synchronizes the time to the second. Press ENTER to confirm, ESC to exit without making changes. 3.2. “Memory and Logging Options” is composed of three sub-functions: 3.2.1. “Sampling Interval”: sets the interval in seconds ...

- 20 - V1.4 memory are not cleared. This operation can be carried out only by the administrator (see page 22). 4. “MEASUREMENT AND pH CALIBRATION 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. Press F1, …, F5 to select BUFFER1 ...