wtw pH/ION 7320 Page 53 Operating Manual Download

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pH/ION 7320

Ion concentration

ba75935e04

12/2017

8.3

Selecting the measuring method

The following methods are supported:



Standard addition



Standard subtraction



Sample addition



Sample subtraction



Blank value addition

Connect the ISE combination electrode to the meter.
The pH/ISE measuring window is displayed.

If necessary, select the ISE display (unit, mg/l) with

<M>

If necessary, measure the temperature of the test sample with a ther-
mometer.

Open the ISE menu with

<MENU/ENTER>

Thoroughly rinse the electrode with distilled water.

Adjust the temperature of the standard solutions.

Select

Method

with



> <



and confirm with

<MENU/ENTER>

Select a method with



> <



and confirm with

<MENU/ENTER>

Select

Start method

with



> <



and confirm with

<MENU/

ENTER>

Measurement with the selected method begins (see section 8.3.1
S

TANDARD

ADDITION

, page 54 ... section 8.3.5 S

Calibration
Man. temperature

25 °C

ISE setup
Method

Standard addition

Start method

ISE

12.12.2012

12:12

Back

Summary of Contents for pH/ION 7320

Page 1: ...OPERATING MANUAL ba75935e04 12 2017 pH ION 7320 P PH ION METER pH ION 7320P pH ION 7320 pH ION 7320 Printermodul pH ION 7320 ...

Page 3: ...1 3 2 Power supply 11 3 3 Initial commissioning 11 3 3 1 Inserting the batteries 12 3 3 2 Connecting the power pack 13 3 3 3 Mounting the stand 13 4 Printer only pH ION 7320 P 14 4 1 Commissioning switching the printer on or off 14 4 2 Operation printing 15 4 3 Printer settings 15 4 4 Maintenance 15 4 4 1 Changing the roll of paper thermal paper 15 4 5 What to do if printer 16 5 Operation 17 5 1 G...

Page 4: ... 1 Measuring 41 7 1 1 Measuring the ORP 41 7 1 2 Measuring the relative ORP 43 7 1 3 Measuring the temperature 44 7 2 ORP calibration 44 8 Ion concentration 45 8 1 Measuring 45 8 1 1 Measuring the ion concentration 45 8 1 2 Measuring the temperature 47 8 2 Calibration 48 8 2 1 Why calibrate 48 8 2 2 When to calibrate 48 8 2 3 Calibration ISE Cal 48 8 2 4 Calibration standards 51 8 2 5 Calibration ...

Page 5: ... storage 83 10 3 3 Measurement dataset 83 10 3 4 Storage locations 83 11 Transmitting data USB interface 84 11 1 Options for data transmission 84 11 2 Connecting a PC 85 11 3 MultiLab Importer 85 12 Maintenance cleaning disposal 87 12 1 Maintenance 87 12 1 1 General maintenance activities 87 12 1 2 Replacing the batteries 87 12 2 Cleaning 88 12 3 Packing 88 12 4 Disposal 88 13 What to do if 89 13 ...

Page 6: ...Contents pH ION 7320 6 ba75935e04 12 2017 ...

Page 7: ...pH measurements ORP measurements and ion selective measurements quickly and reliably The pH ION 7320 provides the maximum degree of operating comfort reliabil ity and measuring certainty for all applications The USB interface can be used for data transmission to a PC and for software updates of the meter 1 Keypad 2 Display 3 Socket field 3 1 2 ...

Page 8: ...d a suitable sensor Suitable sensors are pH electrodes ORP electrodes and ion selective elec trodes ISE The information concerning the printer of the pH ION 7320 P is given in a separate chapter see section 4 PRINTER ONLY PH ION 7320 P page 14 1 Keypad 2 Display 3 Socket field 4 Printer 5 Control panel of the printer Information on available sensors is given on the Internet and in the WTW catalog ...

Page 9: ...s might be damaged if the actions mentioned are not taken 2 1 2 Safety signs on the meter Note all labels information signs and safety symbols on the meter and in the battery compartment A warning symbol triangle without text refers to safety information in this operating manual 2 1 3 Further documents providing safety information The following documents provide additional information which you sh...

Page 10: ...g points for safe operation The meter may only be operated according to the authorized use specified above The meter may only be supplied with power by the energy sources mentioned in this operating manual The meter may only be operated under the environmental conditions mentioned in this operating manual The meter may only be opened if this is explicitly described in this operating manual example...

Page 11: ...r supply The pH ION 7320 is supplied with power in the following ways Mains operation with the supplied power pack Battery operation 4 x alkaline manganese batteries type AA USB operation via a connected USB B cable 3 3 Initial commissioning Perform the following activities Insert the supplied batteries For mains operation Connect the power pack If necessary mount a stand Switch on the meter see s...

Page 12: ...1 Battery compartment 1 Open the battery compartment 1 on the underside of the meter CAUTION Make sure that the poles of the batteries are positioned cor rectly The signs on the batteries must correspond to the signs in the battery compartment 2 Place four batteries type Mignon AA in the battery compartment 3 Close the battery compartment 1 4 Set the date and time see section 5 4 6 EXAMPLE 2 ON NA...

Page 13: ...line voltage at the operating site must lie within the input voltage range of the original power pack see section 14 TECH NICAL DATA page 94 CAUTION Use original power packs only see section 14 TECHNICAL DATA page 94 1 Connect the plug of the power pack to the socket for the power pack on the pH ION 7320 2 Connect the original power pack to an easily accessible power outlet 1 2 ...

Page 14: ...nd ON OFF 3 Lever to open the paper compartment 4 Lid of the paper compartment 2 1 3 4 1 Connect the power pack to the pH ION 7320 P The LED lights up green The printer is ready for operation or When the printer had been switched off LED flashing Switch on the printer with ON OFF The LED lights up green The printer is ready for operation If there is a USB B connection at the same time e g to a PC ...

Page 15: ...hanging the roll of paper thermal paper Menu item Possible set ting Description System Printer Font size 12x20 8x16 7x16 Select the font size for the printer A print sample font of the printer to view the available font sizes can be output with ON OFF_ System Printer Print test page The printer prints the meter informa tion from the menu System Ser vice information The current printer settings are...

Page 16: ...D illuminated No power pack connected Connect the power pack USB cable connected Disconnect the USB cable from the meter Function store automatically at intervals with long intervals is switched on Switch off the function see section 10 2 AUTOMATIC DATA STORAGE AT INTERVALS page 79 No paper available Insert a roll of paper Cause Remedy Paper inserted the wrong way up Turn the roll of paper around ...

Page 17: ...c data output to the USB inter face On Off Switches the meter on or off M Selects the measured parameter Quits the settings CAL CAL__ Calls up the calibration procedure Displays the calibration data STO STO__ Saves a measured value manually Opens the menu for the automatic save function RCL RCL__ Displays the manually stored measured values Displays the automatically stored measured values __ __ M...

Page 18: ...trol CMC function 5 Channel display Plug position of the sensor 6 Sensor symbol calibration evaluation calibration interval 7 Measured temperature with unit 8 Status information meter 9 Softkeys and date time AR Stability control AutoRead is active HOLD Measured value is frozen AR key Batteries are almost empty HOLD AR 25 0 6 093 pH C 4 3 2 6 7 8 9 1 AutoCal 5 12 12 2012 12 12 USB output TEC ...

Page 19: ...or 2 7 Mini USB B interface 8 Power pack 9 Service interface CAUTION Only connect sensors to the meter that cannot return any volt ages or currents that are not allowed SELV and current circuit with current limiting Almost all customary sensors fulfill these conditions 1 Switch the meter on with On Off The meter performs a self test The display shows the manufacturer s logo while the self test is ...

Page 20: ... function is active or with automatic data trans mission if the power pack is connected Display illumination The meter automatically switches off the display illumination if no key is pressed for 30 seconds The illumination is switched on with the next keystroke again You can also generally switch the display illumination on or off see section 9 3 1 SYSTEM page 75 5 4 Navigation The principles of ...

Page 21: ... menus for settings and dialogs in procedures contain further submenus To select a subelement use the keys The current selection is dis played with a frame To make further settings switch to the next higher menu level with F1 Back Use M to return to the measured value display 5 4 4 Elements in menus and dialogs Submenus The name of the submenu is displayed at the upper edge of the frame Sub menus ...

Page 22: ... with MENU ENTER Example Display the Calibration record function Messages Information is marked by the i symbol They cannot be selected Example General Interface Clock Service information Reset System 12 12 2012 12 12 Back Language Deutsch Beep Off Illumination On Contrast 50 Switchoff time 1 h Temperature unit C Stability control On General 12 12 2012 12 12 Back Calibration record Calibration dat...

Page 23: ...ument is in the setting mode 3 Select the System submenu with The current selection is displayed with a frame 4 Open the System submenu with MENU ENTER Calibration record Calibration data storage Serial number sensor Buffer TEC One point calibration Yes Calibration interval 7 d Unit for slope mV pH i 2 00 4 01 7 00 10 01 25 C pH 12 12 2012 12 12 Back pH 6 949 25 0 C 12 12 2012 12 12 USB output Sys...

Page 24: ...irm the setting with MENU ENTER The meter switches to the measuring mode The selected language is active General Interface Clock Service information Reset System 12 12 2012 12 12 Back Language Deutsch Beep Off Illumination On Contrast 50 Switchoff time 1 h Temperature unit C Stability control On General 12 12 2012 12 12 Back Language Deutsch Beep Off Illumination On Contrast 50 Switchoff time 1 h ...

Page 25: ...he display of day month year dd mm yyyy to the display of month day year mm dd yyyy or mm dd yyyy After a fall of the supply voltage empty batteries the date and time are reset 1 In the measured value display Using MENU ENTER__ open the Storage config menu The instrument is in the setting mode 2 Select and confirm the System Clock menu with and MENU ENTER The setting menu for the date and time ope...

Page 26: ...ecessary set the Date and Date format The setting is made similarly to that of the time 8 To make further settings switch to the next higher menu level with Back F1 or Switch to the measured value display with M The instrument is in the measuring mode ...

Page 27: ...ll connected sensors Detailed display of one sensor e g incl CMC feature with pH sensors With the softkey you can very easily switch between the two display types The suitable softkey is displayed depending on the operating situation Channel display Display of the plug position for the respective parameter The filled bar indicates for each connected sensor to which plug position of the meter it is...

Page 28: ...the automatic Stability control is switched off You can activate or switch off the automatic Stability control function see section 9 3 1 SYSTEM page 75 To ensure the high measurement accuracy of the measuring sys tem always measure with a calibrated electrode see section 6 2 CALIBRATION page 31 1 Connect the pH electrode to the meter 2 If necessary select the measured parameter with M 3 When meas...

Page 29: ...the measured parameter flashes The HOLD AR status indicator appears as soon as a stable mea sured value is recognized The progress bar disappears and the dis play of the measured parameter stops flashing The current measurement data is output to the interface Measurement data meeting the stability control criterion is marked by AR You can prematurely terminate the Stability control function manu a...

Page 30: ...l determination and input of the temperature The measuring instrument recognizes whether a suitable sensor is connected and automatically switches on the temperature measurement The display of the temperature indicates the active temperature measuring mode If you wish to measure or calibrate without temperature sensor proceed as follows Temperatur e sensor Resolution of the temp display Temp measu...

Page 31: ...1 1 SETTINGS FOR PH MEASUREMENTS PAGE 66 Use any one to five buffer solutions of the selected buffer set in ascending or descending order Below calibration with Technical buffers TEC is described When other buffer sets are used other nominal buffer values are displayed Apart from that the procedure is identical If single point calibration was set in the menu the calibration proce dure is automatic...

Page 32: ...rement with stability control or accept the calibration value with ENTER The calibration display for the next buffer appears voltage display 1 0 If necessary finish the calibration procedure as a single point calibration with M The calibration record is displayed For single point calibration the instrument uses the Nernst slope 59 2 mV pH at 25 C and determines the zero point of the elec trode pH ...

Page 33: ...ext buffer appears voltage display 1 6 If necessary finish the calibration procedure as a two point calibration with M The calibration record is displayed pH 0 0 24 8 C AutoCal TEC 7 000 12 12 2012 12 12 AR Buffer mV 1 7 Thoroughly rinse the electrode with deionized water 1 8 Immerse the electrode in the next buffer solution 1 9 When measuring without temperature sensor Enter the temperature of th...

Page 34: ...the last buffer of a buf fer set has been measured Then the calibration record is dis played The calibration line is determined by linear regression If single point calibration was set in the menu the calibration proce dure is automatically finished with the measurement of buffer solu tion 1 and the calibration record is displayed 1 Connect the pH electrode to the meter The pH measuring window is ...

Page 35: ...TER The calibration display for the setting of the nominal buffer value appears 1 0 Set the nominal buffer value for the measured temperature with 1 1 Accept the set calibration value with ENTER The calibration display for the next buffer appears voltage display 1 2 If necessary finish the calibration procedure as a single point calibration with M The calibration record is displayed For single poi...

Page 36: ...temperature with 1 9 Accept the set calibration value with ENTER The calibration display for the next buffer appears voltage display 2 0 Finish the calibration procedure as a two point calibration with M The calibration record is displayed pH 4 035 24 8 C ConCal 2 12 12 2012 12 12 Buffer 2 1 Thoroughly rinse the electrode with deionized water 2 2 Immerse the electrode in the next buffer solution 2...

Page 37: ...nish calibration or Continue calibrating using the next buffer with ENTER After the fifth buffer has been measured the calibration is automat ically finished Then the calibration record is displayed The calibration line is determined by linear regression Values to be determined Displayed calibration data 1 point Asy Zero point Asy Slope Nernst slope 59 2 mV pH at 25 C 2 point Asy Slp Zero point As...

Page 38: ...ion After calibrating the meter automatically evaluates the calibration The zero point and slope are evaluated separately The worse evaluation of both is taken into account The evaluation appears on the display and in the calibration record The calibration record is automatically transmitted to the interface after calibrating Menu item Setting func tion Description Calibration Calibration data sto...

Page 39: ... 0 Clean the electrode according to the elec trode operating manual Error Error 30 30 62 0 50 0 Error elimination see section 13 WHAT TO DO IF page 89 pH ION 7320 Ser no 11292113 CALIBRATIONpH 12 12 2012 15 55 Ser no 10501234 AutoCal TEC Buffer 1 4 01 Buffer 2 7 00 Buffer 3 10 01 Voltage 1 184 0 mV Voltage 2 3 0 mV Voltage 3 177 0 mV Temperature 1 24 0 C Temperature 2 24 0 C Temperature 3 24 0 C S...

Page 40: ... calibration is available white Measured values in this range are suitable for documentation 2 Measuring range for which no valid calibration is available shaded Measured values in this range are not suitable for documentation If necessary calibrate the meter with buffers covering this measuring range If the current measured value is outside the calibrated range this area is shaded stronger If a m...

Page 41: ...alue is outside the stability range when you switch over between the measured parameters with M when the automatic Stability control is switched off Criteria for a stable measured value The Stability control function checks whether the measured values are stable within the monitored time interval 1 Connect the ORP electrode to the meter 2 If necessary select the U mV display with M 3 When measurin...

Page 42: ...e AR status indicator appears while the measured value is assessed as not stable A progress bar is displayed and the display of the mea sured parameter flashes The HOLD AR status indicator appears as soon as a stable measured value is recognized The progress bar disappears and the display of the measured parameter stops flashing The current measurement data is output to the interface Measurement d...

Page 43: ...for the determination of the reference point 3 Select the ΔU mV display with M 4 Immerse the ORP electrode in the reference solution 5 Display the potential of the current zero point with CAL 6 Press ENTER to measure the reference solution The measured value is checked for stability automatic stability con trol The display of the measured parameter flashes The measured potential is defined as the ...

Page 44: ...a suitable sensor is connected and automatically switches on the temperature measurement The display of the temperature indicates the active temperature measuring mode If you wish to measure or calibrate without temperature sensor proceed as follows 7 2 ORP calibration Measured parame ter Time interval Stability in the time interval ORP 15 seconds better than 0 3 mV Temperature 15 seconds better t...

Page 45: ...measured values Calibrate regularly before measuring For precise ISE measurements the temperature difference between measurement and calibration should not be greater that 2 K Therefore adjust the temperature of the standard and measuring solutions accordingly If the temperature difference is greater the TpErr warning appears in the measured value display 1 Connect the ISE combination electrode to...

Page 46: ...e measured value is assessed as not stable A progress bar is displayed and the display of the measured parameter flashes The HOLD AR status indicator appears as soon as a stable mea sured value is recognized The progress bar disappears and the dis play of the measured parameter stops flashing The current measurement data is output to the interface Measurement data meeting the stability control cri...

Page 47: ...The measuring instrument recognizes whether a suitable sensor is connected and automatically switches on the temperature measurement The display of the temperature indicates the active temperature measuring mode If you wish to measure or calibrate without temperature sensor proceed as follows Temperatur e sensor Resolution of the temp display Temp measurement yes 0 1 C Automatic with temperature s...

Page 48: ...alibration ISE Cal ISE Cal is the conventional two point to seven point calibration procedure that uses 2 to 7 freely selectable standard solutions The concentration expected for the measurement determines the concentration of the calibration standards 1 Connect the ISE combination electrode to the meter The pH mV ISE measuring window is displayed 2 Keep the standard solutions ready 3 If necessary...

Page 49: ... Use F2 T C to select the setting of the concentration 10 Set the concentration of the standard solution with and press MENU ENTER The standard solution is measured The measured value is checked for stability AutoRead 11 Wait for the end of the AutoRead measurement or accept the calibra tion value with MENU ENTER The calibration display for the next standard solution appears ISE 0 0 24 8 C 12 12 2...

Page 50: ...ion 15 Set the concentration of the standard solution with and press MENU ENTER The standard solution is measured The measured value is checked for stability AutoRead 16 Wait for the end of the AutoRead measurement or accept the calibra tion value with MENU ENTER The calibration display for the next standard solution appears 17 Press MENU ENTER to continue with three point calibration or Finish th...

Page 51: ...USB output Displaying the calibration data storage The calibration records of the last calibrations up to 10 are given in the menu MENU ENTER ISE Calibration Calibration data storage Select the unit of the standard solution and measurement result in the ISE setup Unit menu Standard solution Std 1 7 Values Unit mg l 0 010 500 000 Unit mol l 0 100 5 000 µmol l 10 00 5 000 mmol l Unit mg kg 0 010 500...

Page 52: ... F1 Back or MENU ENTER Switch directly to the mea sured value display with M Calibration Calibration data stor age Output to USB Outputs the calibration records to the interface Display Calibration record Magnitude of the slope mV 50 0 70 0 or 25 0 35 0 Error Error 30 or 90 0 or 15 or 45 Error elimination see section 14 2 ISE page 111 monovalent ions divalent ions pH ION 7320 Ser no 12345678 CALIB...

Page 53: ...e test sample with a ther mometer 4 Open the ISE menu with MENU ENTER 5 Thoroughly rinse the electrode with distilled water 6 Adjust the temperature of the standard solutions 7 Select Method with and confirm with MENU ENTER 8 Select a method with and confirm with MENU ENTER 9 Select Start method with and confirm with MENU ENTER Measurement with the selected method begins see section 8 3 1 STANDARD...

Page 54: ...alue is achieved for the second standard calibration solution CALIBRATION 12 12 2012 12 12 12 1 0 010 mg l 20 2 mV 25 0 C 2 0 100 mg l 79 2 mV 25 0 C Slp 59 0 mV Sensor Ion type Ag 12 12 2012 12 12 Continue USB output 5 Start the measurement with F1 Continue An entry window appears 6 Prepare the sample 7 If necessary add the ISA TISAB solution to the sample 8 Thoroughly rinse the electrode with de...

Page 55: ... Select Continue with and start the measurement with MENU ENTER The measurement result is displayed when the measurement is com pleted 15 If necessary start measuring further samples with MENU ENTER Repeat steps 6 14 for all samples 16 Terminate the measuring method with M A safety query appears 17 Select Yes with 18 Confirm Yes with MENU ENTER Measurement with the selected method is completed i A...

Page 56: ... Perform a two point calibration according to user guidance 4 The calibration record is displayed as soon as a stable value is achieved for the second standard calibration solution CALIBRATION 12 12 2012 12 12 12 1 0 010 mg l 20 2 mV 25 0 C 2 0 100 mg l 79 2 mV 25 0 C Slp 59 0 mV Sensor Ion type Ag 12 12 2012 12 12 Continue USB output 5 Start the measurement with F1 Continue An entry window appear...

Page 57: ...ssary set the ion type for the ion in the standard Ion type with and MENU ENTER On selection of the ion type that can be defined ION Using and MENU ENTER set the valence Valency and molar weight Molar mass for the ion in the standard solution 15 Select Continue with and start the measurement with MENU ENTER The measurement result is displayed when the measurement is com pleted 16 If necessary star...

Page 58: ...Ion concentration pH ION 7320 58 ba75935e04 12 2017 19 Confirm Yes with MENU ENTER Measurement with the selected method is completed ...

Page 59: ...ration solution CALIBRATION 12 12 2012 12 12 12 1 0 010 mg l 20 2 mV 25 0 C 2 0 100 mg l 79 2 mV 25 0 C Slp 59 0 mV Sensor Ion type Ag 12 12 2012 12 12 Continue USB output 5 Start the measurement with F1 Continue An entry window appears 6 Prepare the standard solution 7 If necessary add the ISA TISAB solution to the standard solution 8 Thoroughly rinse the electrode with deionized water 9 Immerse ...

Page 60: ... and start the measurement with MENU ENTER The measurement result is displayed when the measurement is com pleted 15 If necessary start measuring further samples with MENU ENTER Repeat steps 6 12 for all samples 16 Terminate the measuring method with M A safety query appears 17 Select Yes with 18 Confirm Yes with MENU ENTER Measurement with the selected method is completed i Add sample Sample volu...

Page 61: ... set the ion type for the ion in the standard Ion type sub with and MENU ENTER On selection of the ion type that can be defined ION Using and MENU ENTER set the valence Valency and molar weight Molar mass for the ion in the standard solution 3 Select Continue with and confirm with MENU ENTER i Set the ion type for the standard Ion type S Continue Sample subtraction 12 12 2012 12 12 Back 4 Prepare ...

Page 62: ...on Std conc and the volume of the ISA TISAB solu tion ISA TISAB vol 13 Select Continue with and start the measurement with MENU ENTER When the measurement is finished an entry window appears 14 Add the sample to the standard complexing agent or precipitating agent 15 Using and MENU ENTER enter the value for the volume of the sample Sample volume 16 Select Continue with and start the measurement wi...

Page 63: ...rom the change in potential Calibration 17 If necessary start measuring further samples with MENU ENTER Repeat steps 8 16 for all samples 18 Terminate the measuring method with M A safety query appears 19 Select Yes with 20 Confirm Yes with MENU ENTER Measurement with the selected method is completed 1 Select the measuring method see section 8 3 SELECTING THE MEASUR ING METHOD page 53 ISE 0 321 24...

Page 64: ...lemented with blank value solution 10 Using and MENU ENTER enter the values for the vol ume of the sample Sample volume the volume of the ISA TISAB solution ISA TISAB vol the volume of the blank value solution BV volume and the concentration of the blank value solution BV conc 11 Select Continue with and start the measurement with MENU ENTER When the measurement is finished an entry window appears...

Page 65: ...nue with and start the measurement with MENU ENTER The measurement result is displayed when the measurement is completed 15 If necessary start measuring further samples with MENU ENTER Repeat steps 6 14 for all samples 16 Terminate the measuring method with M A safety query appears 17 Select Yes with 18 Confirm Yes with MENU ENTER Measurement with the selected method is completed ISE 0 321 24 8 C ...

Page 66: ...sted that concern the pH mea surement Default settings are printed in bold Menu item Possible set ting Description Calibration Cali bration record Displays the calibration record of the last calibration Calibration Calibration data storage Display Displays the calibration record Further options Scroll through the calibration records with Output the displayed calibration record to the interface wit...

Page 67: ...r reminds you to calibrate regularly by the flashing sensor symbol in the measuring screen Calibration Unit for slope mV pH Unit of the slope The display refers to the Nernst slope of 59 2 mV pH 100 x deter mined slope Nernst slope Alternative temper ature On Off Takes the temperature value from the 2nd sensor Man temperature 25 25 130 C Entry of the manually determined temperature For measurement...

Page 68: ...ring On pH lower limit 2 20 Lower limit A message is output to the USB interface if it is exceeded This menu item is only visible when the pH monitoring setting is active Limit monitoring TP monitoring On TP upper limit 5 105 C Upper limit A message is output to the USB interface if it is exceeded This menu item is only visible when the TP monitoring setting is active Limit monitoring TP monitorin...

Page 69: ...7 000 10 000 20 C 8 Merck 5 4 010 7 000 10 000 25 C 9 DIN 19267 1 090 4 650 6 790 9 230 25 C 10 Mettler Toledo USA 1 679 4 003 7 002 10 013 25 C 11 Mettler Toledo EU 1 995 4 005 7 002 9 208 25 C 12 Fisher 2 007 4 002 7 004 10 002 25 C 13 Fluka BS 4 006 6 984 8 957 25 C 14 Radiometer 1 678 4 005 7 000 9 180 25 C 15 Baker 4 006 6 991 10 008 25 C No Buffer set pH values at ...

Page 70: ... 19 Precisa 3 996 7 003 8 999 25 C 20 Reagecon TEC 2 000 4 010 7 000 10 000 25 C 21 Reagecon 20 2 000 4 000 7 000 10 000 13 000 20 C 22 Reagecon 25 2 000 4 000 7 000 10 000 13 000 25 C 23 Chemsolute 2 000 4 000 7 000 10 000 20 C 24 USABlueBook 4 000 7 000 10 000 25 C 25 YSI 4 000 7 000 10 000 25 C No Buffer set pH values at The buffers are selected in the menu pH MENU ENTER Cali bration Buffer see...

Page 71: ...e Setting the calibration interval The calibration interval is set to 7 days in the factory You can change the interval 1 999 days To ensure the high measuring accuracy of the measuring system calibrate after the calibration interval has expired 1 Open the menu for measurement settings with MENU ENTER 2 In the Calibration Calibration interval menu set the calibration interval with 3 Confirm the se...

Page 72: ...measured value display with M In the following table only those settings are listed that influence the ORP mea surement Default settings are printed in bold Menu item Possible setting Description Alternative temper ature On Off Takes the temperature value from the 2nd sensor Man temperature 25 25 130 C Entry of the manually determined temperature For measurements without temperature sensor only Re...

Page 73: ...ion data stor age Display Displays the calibration record Further options Scroll through the cali bration records with Output the displayed cal ibration record to the interface with F2 USB output Output all calibration records to the interface with F2__ USB out put Quit the display with F1 Back or MENU ENTER Switch directly to the measured value display with M Calibration Calibration data stor age...

Page 74: ... the setting ION Measuring with the NH 500 electrode The NH4 setting is not suitable for the gas sensitive electrode NH 500 Select the following settings Ion type ION Valency 1 ISE setup Unit mg l µmol l mg kg ppm Selection with which unit the measurement result and calibration standards should be displayed ISE setup Ion type ION Valency Molar mass Set the valence Valency and molar weight Molar ma...

Page 75: ...m General Contrast 0 50 100 Changes the display contrast System General Switchoff time 10 min 1h 24 h Adjusts the switch off time System General Temperature unit C F Temperature unit degrees Celsius or degrees Fahrenheit All temperature values are dis played with the selected unit System General Stability control On Off Switches on or off the auto matic stability control during measurement System ...

Page 76: ... pH ION 7320P For details see section 4 PRINTER ONLY PH ION 7320 P page 14 System Clock Date format Datum Time Time and date settings see section 5 4 6 EXAMPLE 2 ON NAVIGATION SETTING THE DATE AND TIME page 25 System Service infor mation Hardware version and software version of the meter are dis played System Reset Resets the system settings to the delivery condition see sec tion 9 4 2 RESETTING T...

Page 77: ...the delivery status The system settings are reset in the menu Storage config System Reset To open the Storage config menu press the MENU ENTER__ key in the measured value display Resolution mV 0 1 Asymmetry 0 mV Slope 59 2 mV Man temperature 25 C One point calibration No Stability control On Temperature unit C Setting Default settings Language English Beep On Baud rate 4800 Baud Output format ASCI...

Page 78: ...storage You can transmit a measurement dataset to the data storage as follows With each data storage process the current datasets of the sensors indicated on the display are transmitted to the interface at the same time If the storage is full The following window appears if all 200 storage locations are occupied 1 Press the STO key shortly The menu for manual data storage appears 2 If necessary ch...

Page 79: ...tervals The storage interval Interval determines the time interval between automatic data storage processes With each data storage process the current datasets of the sensors indicated on the display are transmitted to the interface at the same time Configuring the automatic storage function Data storage full Erase Yes No Warning 12 12 2012 12 12 Back 1 Press the STO__ key The menu for automatic d...

Page 80: ... 30 s 1 min 5 min 10 min 15 min 30 min 60 min Storage interval The lower limit of the storage interval can be restricted by the number of free storage locations The upper limit is restricted by the storage duration Duration 1 min x min Storage duration Specifies after which time the automatic data storage should be terminated The lower limit of the storage duration is restricted by the stor age in...

Page 81: ...rage The contents of the manual or automatic measurement data storage can be shown on the display and output to the interface Each of the measurement data storages has a function to erase the entire contents Editing the data storage The storage is edited in the menu Storage config Data storage To open the Storage config menu press the MENU ENTER__ key in the measured value display Open the manual ...

Page 82: ...orage Erase Erases the entire manual mea surement data storage All calibration data remain stored when this action is performed Data storage Manual data storage Output to USB Outputs all stored measurement data to the interface Manual data storage 3 of 64 12 12 2012 11 24 16 ID number 2 pH 7 000 24 8 C AR 12 12 2012 12 12 Back USB output 12 12 2012 09 56 20 pH ION 7320 Ser no 08502113 ID number 2 ...

Page 83: ...dataset includes ID number Date time Measured values of the connected sensors Measured temperature value of the connected sensors or manually set tem perature AutoRead info The AR indicator appears with the measured value if the AutoRead criterion was met while storing stable measured value Other wise there is no AR indicator Calibration evaluation or no evaluation 10 3 4 Storage locations The pH ...

Page 84: ...can set the transmission interval Simultaneously with every auto matic data storage process see section 10 2 AUTOMATIC DATA STORAGE AT INTERVALS page 79 Stored mea sured values Manual Displayed dataset with F2 USB output after calling up from the storage All datasets with the Output to USB function see section 10 3 1 EDITING THE MEASUREMENT DATA STORAGE page 81 Calibration records Manual Calibrati...

Page 85: ...th Pentium processor or higher with at least one free USB connection and CD ROM drive Windows XP Windows 7 11 3 MultiLab Importer With the aid of the MultiLab Importer software you can record and evaluate measurement data with a PC 1 Insert the supplied installation CD in the CD drive of your PC 2 Install the driver from the CD Follow the Windows installation instructions as necessary 3 Connect th...

Page 86: ...Transmitting data USB interface pH ION 7320 86 ba75935e04 12 2017 ...

Page 87: ...You can operate the meter either with normal batteries or with rechargeable batteries Ni MH In order to charge the batteries an external charging device is required 1 Battery compartment 1 Open the battery compartment 1 on the underside of the meter 2 Remove the four batteries from the battery compartment 3 Place four new batteries type Mignon AA in the battery com partment CAUTION Make sure that ...

Page 88: ...please contact your supplier 4 Close the battery compartment 1 5 Set the date and time see section 5 4 6 EXAMPLE 2 ON NAVIGATION SETTING THE DATE AND TIME page 25 When the batteries are nearly discharged the status indi cator is displayed Dispose of used batteries according to the local regulations of your country End users within the European Union are obligated to return used batteries even ecol...

Page 89: ...ir in the junction Extract air or moisten junction Cable broken Replace electrode Gel electrolyte dried out Replace electrode Measured value outside the mea suring range Use suitable electrode Cause Remedy pH electrode The values determined for zero point and slope of the electrode are outside the allowed limits Recalibrate Junction contaminated Clean junction Electrode broken Replace electrode Bu...

Page 90: ...uded if necessary Temperature not stable Temper if necessary Electrode test sample Conductivity too low Use a suitable electrode Temperature too high Use a suitable electrode Organic liquids Use a suitable electrode Cause Remedy pH electrode pH electrode unsuitable Use a suitable electrode Temperature difference between buffer and test sample too great Adjust the temperature of buf fer or sample s...

Page 91: ...d Use a suitable electrode Electrode not suitable for the selected ion Use a suitable electrode or select a suitable ion The gas sensitive electrode NH 500 was calibrated with the NH4 setting Select the following settings Ion type ION Valency 1 Socket damp Dry the socket Calibration procedure Wrong sequence of standards for three point calibration Select the correct sequence Calibration standards ...

Page 92: ...What to do if pH ION 7320 92 ba75935e04 12 2017 ...

Page 93: ...pired Recalibrate the measuring system Cause Remedy Batteries almost empty Replace the batteries see section 12 1 MAINTENANCE page 87 Cause Remedy Operating condition undefined or EMC load unallowed Processor reset Press the ENTER and On Off key simultaneously Cause Remedy E g a question by the service department Switch on the meter Open the menu ENTER_ Storage config System Service information Th...

Page 94: ...meter Range Increment Tmanual C 25 130 1 Tmanual F 13 266 1 Accuracy 1 digit Parameter Accuracy Temperature of the test sample pH range 2 0 20 0 0 1 15 C 35 C 2 00 20 00 0 01 15 C 35 C 2 000 19 999 0 005 15 C 35 C U mV range 2500 2500 1 15 C 35 C 1200 0 1200 0 0 3 15 C 35 C T C temperature sensor NTC 30 0 1 PT 1000 0 1 when measuring in a range of 2 pH around a calibration point The accuracy value...

Page 95: ... 01 0 1 1 ISE µmol l 0 000 9 999 10 00 99 99 100 0 999 9 1000 9999 0 001 0 01 0 1 1 mmol l 1000 999999 1 ISE mg kg 0 000 9 999 10 00 99 99 100 0 999 9 1000 999999 0 001 0 01 0 1 1 ISE ppm 0 000 9 999 10 00 99 99 100 0 999 9 1000 999999 0 001 0 01 0 1 1 ISE 0 000 9 999 10 00 99 99 100 0 999 9 1000 999999 0 001 0 01 0 1 1 Manual temperature input Parameter Range Increment Tmanual C 20 130 1 ...

Page 96: ...r days 85 Power supply Batteries 4 x 1 5 V alkali manganese batteries type AA Rechargeable batteries 4 x 1 2 V NiMH rechargeable batteries type AA no charging function Operational life Up to 1000 h without 150 h with illumination Power pack Kuantech Co Ltd KSAC 0900110W1UV 1 Input 100 240 V 50 60 Hz 270 mA Output 9 V 1 1 A Connection max overvoltage category II Primary plugs contained in the scope...

Page 97: ... designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harm...

Page 98: ...ETER PAGE 93 1 Install the downloaded firmware update on a PC An update folder is created in the Windows start menu If an update folder already exists for the meter or meter type the new data is displayed there 2 In the windows start menu open the update folder and start the firmware update program 3 Using the USB interface cable connect the pH ION 7320 to a USB inter face virtual COM port of the ...

Page 99: ...ctivity divided by the unit of the molality The practical pH value is the value of a pH measurement Potentiometry Name of a measuring technique The signal depending on the mea sured parameter of the electrode is the electrical potential The electri cal current remains constant Slope The slope of a linear calibration function Zero point The zero point of a pH electrode is the pH value at which the ...

Page 100: ...en two measured values that can be dis played by a meter Stability control Au toRead Function to control the measured value stability Standard solution The standard solution is a solution where the measured value is known by definition It is used to calibrate a measuring system Temperature function Name of a mathematical function expressing the temperature behavior of a test sample a sensor or par...

Page 101: ...71 K Keys 17 M Measured value display 21 Measurement accuracy 71 Measurement data storage Edit 81 Erase 81 Storage locations 83 Measurement dataset 83 Measuring ISE 45 ORP 43 ORP voltage 41 pH 28 Measuring method 53 Blank value addition 63 Sample addition 59 Sample subtraction 61 Standard addition 54 Standard subtraction 56 Menus navigation 21 Messages 22 P pH buffer sets 68 Print 84 Printer only ...

Page 102: ...7 T Temperature measurement ISE 47 pH 30 44 Three point calibration ISE 50 pH 33 36 Transmitting data 84 Automatic 84 Manual 84 Transmitting measured values 84 Two point calibration ISE 49 pH 32 35 Z Zero point of pH combination electrode 31 ...

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Page 104: ...s buildings factories and farms In more than 150 countries we have strong long standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise backed by a legacy of innovation Xylem Analytics Germany GmbH Dr Karl Slevogt Str 1 82362 Weilheim Germany Xylem Analytics Germany Sales GmbH Co KG WTW Dr Karl Slevogt Str 1 82362 Weilheim ...

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