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Thermo orion 410Aplus Instruction Manual

Benchtop ph and ph/ise meters
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INSTRUCTION MANUAL
Benchtop pH and pH/ISE Meters
Models 410Aplus
420Aplus
520Aplus
525Aplus
710Aplus
720Aplus
920Aplus

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  • Page 1 INSTRUCTION MANUAL Benchtop pH and pH/ISE Meters Models 410Aplus 420Aplus 520Aplus 525Aplus 710Aplus 720Aplus 920Aplus...

  • Page 2: How To Use This Manual

    Benchtop pH/ISE Meter Instruction Manual Chapter I Introduction Thermo Orion provides pH and ISE meters for every application from pH measurements to advanced Ion Selective Electrode work. This manual describes the operation and use of the Thermo Orion Model 410Aplus...
  • Page 3 Benchtop pH/ISE Meter Instruction Manual...

  • Page 4: General Information

    (1) a custom LCD display, which simultaneously displays mode, results and temperature; (2) a sealed keypad with tactile and audible feedback; and (3) an RS232 port for use with the Thermo Orion 900A printer or other serial peripheral devices. Models 520Aplus, 525Aplus, 720Aplus, 920Aplus...
  • Page 5 2. Disconnect the ATC probe. 3. Plug line (Thermo Orion Catalog No. 020125 for 110V, Thermo Orion Catalog No. 020130 for 220V) into an appropriate wall outlet then securely into meter power receptacle.
  • Page 6 2. Disconnect the ATC probe. 3. Plug line adapter (Thermo Orion Catalog No. 020125 for 110V, Thermo Orion Catalog No. 020130 for 220V) into an appropriate wall outlet then securely into meter power receptacle.
  • Page 7 Benchtop pH/ISE Meter Instruction Manual C. Models 420Aplus and 710Aplus Check-Out Procedure 1. Perform the self-test. 2. After completing the self-test the meter will be in MEASURE mode. The legend MEASURE will be displayed. a. Press mode until the pH mode indicator is displayed. Main display should read a steady 7.00 ±...
  • Page 8 Benchtop pH/ISE Meter Instruction Manual For Model 420Aplus, the meter is now ready for use with electrodes. Remove the shorting cap. 5. For Model 710Aplus only With the shorting cap still connected, press mode until the concentration mode indicator is displayed. The display should read 1.00.
  • Page 9 2. Disconnect the ATC probe. 3. Plug line adapter (Thermo Orion Catalog No. 020125 for 110V, Thermo Orion Catalog No. 020130 for 220V) into an appropriate wall outlet then securely into meter power receptacle.
  • Page 10 Benchtop pH/ISE Meter Instruction Manual E. Models 520Aplus and 525Aplus Check-Out Procedure 1. Perform the self-test. 2. For 525Aplus only Press 2nd channel until channel 1 is selected 3. After completing the self-test the meter will be in MEASURE mode. The legend MEAS will be displayed.
  • Page 11 2. Disconnect the ATC probe. 3. Plug line adapter (Thermo Orion Catalog No. 020125 for 110V, Thermo Orion Catalog No. 020130 for 220V) into an appropriate wall outlet then securely into meter power receptacle.
  • Page 12 Benchtop pH/ISE Meter Instruction Manual G. Models 720Aplus and 920Aplus Check-Out Procedure 1. Perform the self-test. 2. After completing the self-test the meter will be in MEASURE mode. The legend MEASURE will be displayed. NOTE: If this is the first time this procedure has been performed the reading should be 7.000 ±...

  • Page 13: Instrument Setup

    Benchtop pH/ISE Meter Instruction Manual Instrument Set Up The meter can be adjusted to provide you an optimal viewing angle via the flip stand. To adjust the viewing angle, turn the instrument over and place your thumbs on the inside of the stand sides. As you lift the stand, gently push the sides of the stand out.

  • Page 14: Rear Panel

    Figure #5 Rear Panel NOTE: The Models 410Aplus, 420Aplus, 520Aplus and 710Aplus contain only Sensing Electrode Input 1 and Reference Electrode Input 1. On the Models 410Aplus, 420Aplus, and 710Aplus the inputs are found on the left side of the rear panel.

  • Page 15: Electrode Connections

    Benchtop pH/ISE Meter Instruction Manual B. Electrode Connections 1. Attach electrodes with BNC connectors to sensor input by sliding connector onto input, pushing down and turning clockwise to lock into position. Connect reference electrodes with pin tip connectors by pushing connector straight into reference input. NOTE: If using a combination electrode with a BNC connector, a reference electrode is not used.

  • Page 16: For Best Results

    < 2.00 or > 12.00 are used. See Appendix C. There are two ways of calibrating Thermo Orion Benchtop Meters, autocalibration or manual calibration. The following are descriptions and instructions of each method, for each model.

  • Page 17: Temperature Compensation

    Benchtop pH/ISE Meter Instruction Manual Temperature Compensation pH measurements on the Model 410Aplus are made with Automatic Temperature Compensation. pH measurements on the Models 420Aplus, 520Aplus, 525Aplus, 710Aplus, 720Aplus, and 920Aplus may be made with either Automatic or Manual Temperature Compensation.
  • Page 18 Three Point pH Calibration Up to a three (3) point calibration can be performed on the Model 410Aplus Meter. Simply select the buffer sequence that best fits your application. Calibration and Measurement of pH...

  • Page 19: Ph Calibration Procedure

    Benchtop pH/ISE Meter Instruction Manual pH Calibration Procedure 1. Connect electrode(s) to meter. Choose buffers that will bracket the expected sample pH. 2. Rinse electrode(s) and place into buffer. 3. Press mode until CALIBRATE is displayed. 4. The last buffer sequence used will be displayed. Press yes to use this sequence or no to scroll through choices.
  • Page 20 Benchtop pH/ISE Meter Instruction Manual C. Model 420Aplus pH Calibration and Measurement Autocalibration Autocalibration is the feature of the Model 420Aplus Meter that automatically recognizes three buffers, 4.01, 7.00, and 10.01, within a range of ± 0.5 pH units. Results greater than ± 0.5 pH units from the correct value will trigger an operator assistance code.
  • Page 21 Benchtop pH/ISE Meter Instruction Manual pH Calibration Procedure 1. Connect electrode(s) to meter. Choose buffers that will bracket the expected sample pH. 2. Press mode until the pH mode indicator is displayed. 3. Rinse electrode(s) and place into buffer. 4. Press 2nd then cal to begin calibration. The date and time of the last calibration will be displayed.
  • Page 22 Benchtop pH/ISE Meter Instruction Manual D. Model 520Aplus pH Calibration and Measurement Autocalibration Autocalibration is the feature of the Model 520Aplus Meter that automatically recognizes five buffers, 1.68, 4.01, 7.00, 10.01, and 12.46, within a range of ± 0.5 pH units. Results greater than ± 0.5 pH units from the correct value will trigger the prompt NO AUTOBUFFER and require operator intervention.
  • Page 23 Benchtop pH/ISE Meter Instruction Manual pH Calibration Procedure 1. Connect electrode(s) to meter. Choose buffer(s), which is closest to or will bracket the expected sample pH. 2. Press calibrate. Calibrate is displayed. The time and date of the last calibration are displayed. 3.
  • Page 24 Benchtop pH/ISE Meter Instruction Manual E. Model 525Aplus pH Calibration and Measurement Autocalibration Autocalibration is the feature of the Model 525Aplus Meter that automatically recognizes five buffers, 1.68, 4.01, 7.00, 10.01, and 12.46, within a range of ± 0.5 pH units. Results greater than ± 0.5 pH units from the correct value will trigger the prompt NO AUTOBUFFER.
  • Page 25 Benchtop pH/ISE Meter Instruction Manual pH Calibration Procedure 1. Press 2nd then channel until the correct input channel is selected. 2. Press mode until the pH mode indicator is displayed. 3. Press calibrate. CALIBRATE is displayed. The time and date of the last calibration are displayed.
  • Page 26 Benchtop pH/ISE Meter Instruction Manual F. Model 710Aplus pH Calibration and Measurement Autocalibration Autocalibration is the feature of the Model 710Aplus Meter that automatically recognizes five buffers, 1.68, 4.01, 7.00, 10.01, and 12.46, within a range of ± 0.5 pH units. Results greater than ± 0.5 pH units from the correct value will trigger an operator assistance code.
  • Page 27 Benchtop pH/ISE Meter Instruction Manual pH Calibration Procedure 1. Connect electrode(s) to meter. Choose buffers that will bracket the expected sample pH. 2. Press mode until the pH mode indicator is displayed. 3. Rinse electrode(s) and place into buffer. 4. Press 2nd then cal to begin calibration. CALIBRATE is displayed above the main field.
  • Page 28 Benchtop pH/ISE Meter Instruction Manual G. Model 720Aplus pH Calibration and Measurement Autocalibration Autocalibration is the feature of the Model 720Aplus Meter that automatically recognizes five buffers, 1.68, 4.01, 7.00, 10.01, and 12.46, within a range of ± 0.5 pH units. Results greater than ± 0.5 pH units from the correct value will trigger the prompt NO AUTOBUFFER.
  • Page 29 Benchtop pH/ISE Meter Instruction Manual pH Calibration Procedure 1. Press 2nd then channel until the correct input channel is selected. 2. Press mode until the pH mode indicator is displayed. 3. Press calibrate. CALIBRATE is displayed. The time and date of the last calibration are displayed.
  • Page 30 Benchtop pH/ISE Meter Instruction Manual H. Model 920Aplus pH Calibration and Measurement Autocalibration Autocalibration is the feature of the Model 920Aplus Meter that automatically recognizes five buffers, 1.68, 4.01, 7.00, 10.01, and 12.46, within a range of ± 0.5 pH units. Results greater than ± 0.5 pH units from the correct value will trigger the prompt NO AUTOBUFFER.
  • Page 31 Benchtop pH/ISE Meter Instruction Manual Channel Selection and Electrode Identification Prior to calibration, select the channel and proper electrode identification. 1. Press 2nd then channel to select the correct channel. The channel in use will be identified in the prompt line. Example: 1-pH. 2.
  • Page 32 Benchtop pH/ISE Meter Instruction Manual Chapter VI Calibration and Measurement of Concentration Models 710Aplus, 720Aplus, 920Aplus A. General Information A one, two, or multipoint calibration should be performed before concentration is measured. It is recommended that a two point standard calibration be performed at the beginning of each day and every time electrodes are changed to determine the slope of the electrode.

  • Page 33: Autoblank Correction

    Benchtop pH/ISE Meter Instruction Manual Slope Up to a five point calibration may be performed. The instrument uses a point-to-point calibration scheme. The meter stores, in memory, the different electrode slopes for each portion of the calibration curve. When measuring in a particular region of the curve, the electrode slope for that region is employed in the calculation of sample concentration.
  • Page 34 Benchtop pH/ISE Meter Instruction Manual B. Model 710Aplus Concentration Calibration and Measurement Concentration Calibration Procedure 1. Press mode until the CONC mode indicator is displayed. 2. Add ionic strength adjuster, or pH adjuster, to the standards and samples as recommended in the appropriate electrode instruction manual.
  • Page 35 Benchtop pH/ISE Meter Instruction Manual C. Model 720Aplus Concentration Calibration and Measurement Concentration Calibration Procedure 1. The number of the electrode input in use will appear on the prompt line. Example: CH-1. To select a different channel press 2nd then channel. 2.
  • Page 36 Benchtop pH/ISE Meter Instruction Manual D. Model 920Aplus Concentration Calibration and Measurement Channel Selection and Electrode Identification 1. Securely connect electrodes to either input 1 or 2. The number of the electrode input in use appears directly before the electrode ID in the prompt line.

  • Page 37: Measure Mode

    Benchtop pH/ISE Meter Instruction Manual Concentration Calibration Procedure 1. Press mode until the concentration mode indicator, CON appears on the display. 2. Add ionic strength adjuster, or pH adjuster to the standards and samples as recommended in the electrode instruction manual. NOTE: If you want to exit this menu, at any time, press 1st then measure.
  • Page 38 Benchtop pH/ISE Meter Instruction Manual Chapter VII 920Aplus Special Features A. Calibration Edit The calibration edit feature allows you to edit a pH or concentration calibration curve without repeating the entire procedure. This is useful in multipoint calibrations if an entry mistake was made on one of the points. The meter will automatically recalculate all calibration values.

  • Page 39: Enter Value

    Benchtop pH/ISE Meter Instruction Manual Cal Edit Prompt Key Press/Action Press 2nd cal edit. then 2. STD 1 OK? The meter displays the current value of standard one. Press yes if okay or no to edit. 3. If no selected: Press 1 or 2 then press yes.
  • Page 40 Benchtop pH/ISE Meter Instruction Manual B. Incremental Techniques General Information The Model 920Aplus Meter includes two different incremental techniques: known addition and known subtraction. Both involve adding aliquots of a standard of known concentration to the sample. Single and double incremental techniques can be performed.
  • Page 41 Benchtop pH/ISE Meter Instruction Manual Prompt Key Press/Action Press 2nd then incr tech. 2. 1-ADDN 2-SUBTR Press 1, then yes. 3. KNOWN ADDN The meter verifies your choice. Wait for the next prompt. 4. 1-SINGLE 2-DOUBLE Press 1, then yes. 5.
  • Page 42 Benchtop pH/ISE Meter Instruction Manual Set-up 1. Refer to the appropriate electrode instruction manual for preparation of sensing and reference electrode(s), required solutions (ionic strength adjusters, standards...), and any special requirements. 2. Securely connect electrode(s) to either input 1 or 2. The number of the input in use will appear directly before the electrode ID.
  • Page 43 Benchtop pH/ISE Meter Instruction Manual Electrode interferences should be at a minimum, the effect of the interference may change as the concentration of the ion of interest changes. This situation may also result in high or low electrode slopes. It is possible to reduce some electrode interferences.
  • Page 44 Benchtop pH/ISE Meter Instruction Manual Single Known Subtraction Measurement Procedure In known subtraction, each addition of standard subtracts an increment of the species to be measured. The known subtraction procedure and meter prompts are the same as the known addition procedure except that the meter asks for the reaction ratio.
  • Page 45 Benchtop pH/ISE Meter Instruction Manual Double Incremental Techniques Double incremental techniques allow sample concentration and electrode slope to be determined simultaneously. This eliminates the requirement of performing a calibration or slope check before measurement as required with direct measurement or single incremental techniques. Double incremental techniques are useful for occasional samples or samples with complex matrices.

  • Page 46: Total Volume

    Benchtop pH/ISE Meter Instruction Manual Double Known Addition Measurement Procedure For most double known addition analysis, it is recommended that: a. Sample volume be 100 mL. b. The concentration of the standard added be 100 times the expected sample concentration. c.
  • Page 47 Benchtop pH/ISE Meter Instruction Manual Prompt Key Press/Action 13. MEAS’G SAMP+ STD Wait for a stable display, then 1-NA+ REA press yes. YES TO CONTINUE 14. 2ND STD VOLUME? Enter the volume of the second addition. Press yes. 15. 2ND STD ADDED Add the second standard addition to the sample beaker.
  • Page 48 Benchtop pH/ISE Meter Instruction Manual Double Known Subtraction Measurement Procedure In double known subtraction, each addition of standard subtracts an increment of the species to be measured. The procedures and meter prompts are the same as for double known addition except the meter prompts for the reaction ratio.

  • Page 49: Temperature Measurement

    Benchtop pH/ISE Meter Instruction Manual Chapter VIII Other Measurement Models A. Temperature Measurement The meters display temperature in the range -5.0 to +105˚C simultaneously with sample results. Whenever an ATC probe is connected, live temperature measurements are displayed in the prompt line. For results greater than 100˚C the tenth digit is deleted.
  • Page 50 The millivolt modes are useful when performing potentiometric titrations or preparing calibration curves. Detailed instructions for any Thermo Orion electrode are given in the electrode instruction manual. Titration instructions are included in the Thermo Orion Redox Electrode (Model 9678 or 9778) Instruction Manual, or in standard analytical chemistry texts.
  • Page 51 These modes may be used for titrations, oxidation/reduction (redox) potential measurements or calibration curves. Detailed instructions for any Thermo Orion electrode are given in the appropriate electrode instruction manual. Titration instructions are included in the Thermo Orion Redox Electrode (Model 9678 or 9778) instruction manual, or in standard analytical chemistry texts.
  • Page 52 Benchtop pH/ISE Meter Instruction Manual D. Models 525Aplus, 720Aplus, 920Aplus Redox Measurements Measurements with redox (oxidation-reduction potential) electrode(s) are performed in the millivolt or relative millivolt modes. Perform the following steps 1. Securely connect electrode(s) to input 1 or 2. 2.
  • Page 53 Dissolved Oxygen measurements are displayed in ppm when the Thermo Orion Model 9708 Dissolved Oxygen Electrode (Cat. No. 970899) is used with the Thermo Orion Model 410Aplus Meter. Perform the following steps to prepare the meter and calibrate the electrode.
  • Page 54 Benchtop pH/ISE Meter Instruction Manual 1. Connect the Model 9708 to meter and leave electrode mode switch “OFF”. 2. Disconnect ATC probe. NOTE: ATC probe must not be connected to the meter and the meter should be calibrated to pH 7 at 25.0˚C. 3.
  • Page 55 Dissolved Oxygen measurements are displayed in ppm when the Thermo Orion 9708 Dissolved Oxygen Electrode (Cat. No. 970899) is used with the Thermo Orion Models 520Aplus, 525Aplus and 720Aplus and 920Aplus Meters. Perform the following steps to prepare the meter and calibrate the electrode.
  • Page 56 Benchtop pH/ISE Meter Instruction Manual 12. Insert the reservoir (funnel) into a BOD bottle containing enough water to just cover the bottom. Insert the electrode, making sure that the electrode tip is not immersed in the water and does not have water droplets clinging to the outside of the membrane.
  • Page 57 H. Model 920Aplus Dissolved Oxygen Measurements Dissolved Oxygen measurements are displayed in ppm when the Thermo Orion 9708 Dissolved Oxygen Electrode (Cat. No. 970899) is used with the Thermo Orion Model 920Aplus Meter. Perform the following steps to prepare the meter and calibrate the electrode.
  • Page 58 A 10 microampere polarizing current is available for Karl Fischer or other polarized electrode titrations. Use the Karl Fischer adapter, Thermo Orion Catalog Number 090048. 1. Insert KF electrode pin-tip connector into the KF adapter. Connect the other pin-tip of the electrode into the reference input.

  • Page 59: Use With Printers And Computers

    Chapter IX Use with Accessories A. Use with Printers and Computers The Models 410Aplus and 420Aplus can send information to a printer or computer using the RS232 port. Models 520Aplus, 525Aplus, 710Aplus, 720Aplus, and 920Aplus have a bi-directional interface to be used with printers, computers and other serial peripheral devices.
  • Page 60 Benchtop pH/ISE Meter Instruction Manual Use with the 900A Printer When used with the Thermo Orion 900A printer, the meter will provide a printed record of results. The 900A printer can be battery operated or connected to line power. Plug the printer directly into the meter using the nine pin D shell connector on the left side of the meter.
  • Page 61 Benchtop pH/ISE Meter Instruction Manual B. Remote Control for Model 710Aplus The Model 710Aplus can be remotely controlled from an RS232 communication device or PC. After making the physical connection between your meter and computing device, type rem into your computer to establish communication.
  • Page 62 For Model 710Aplus 100 ‘************************************************************************************ 110 ‘** THIS PROGRAM LOGS ONTO AN THERMO ORION BENCHTOP METER AND EVERY 5 SECONDS 120 ‘** WILL CHECK THE CURRENT pH VALUE BY SENDING A “mp” COMMAND. IF 130 ‘** THE pH VALUE IS ABOVE 5.00, IT WILL SEND A “pr” COMMAND TO REQUEST 140 ‘** A FULL PRINTOUT.
  • Page 63 Benchtop pH/ISE Meter Instruction Manual C. Remote Control for Models 520Aplus, 525Aplus, 720Aplus, and 920Aplus The meters can be remotely controlled from a personal computer or other RS232 communication device. After making the physical connection between your meter and computing device, type rem to establish communication.
  • Page 64 Benchtop pH/ISE Meter Instruction Manual Command Function or Meaning hold hold toggle Incremental techniques mode (920Aplus only) meas measure mode change modes millivolt display select options menu print or datalog ready ready function toggle enter remote control function select resolution second key slope slope...
  • Page 65 For Models 520Aplus, 525Aplus, 720Aplus, and 920Aplus 100 ‘*********************************************************************************** 110 ‘** THIS PROGRAM LOGS ONTO AN THERMO ORION BENCHTOP METER AND EVERY 5 SECONDS 120 ‘** WILL CHECK THE CURRENT pH VALUE BY SENDING A “disp” COMMAND. IF 130 ‘** THE pH VALUE IS ABOVE 5.00, IT WILL SEND A “pr” COMMAND TO REQUEST 140 ‘** A FULL PRINTOUT.
  • Page 66 Benchtop pH/ISE Meter Instruction Manual D. Use with Model 607 Electrode Switchbox When the Model 607 electrode switchbox is connected to the 920Aplus Meter, up to seven electrodes can be used. Up to seven different calibrations will be stored in memory until the user repeats a calibration. 1.
  • Page 67 DataCOLLECT can be used with Models 520Aplus, 525Aplus, 720Aplus, and 920Aplus. DataCOLLECT is a program that can be easily installed for your unattended PC to collect data from Thermo Orion’s family ISE, pH, Conductivity and Dissolved Oxygen (DO) meters from up to 4 serial ports simultaneously.

  • Page 68: Troubleshooting

    Thermo Orion’s Technical Service Department at 800-225-1480. Models 410Aplus, 420Aplus and 710Aplus: During the self-test the meter displays the code 7E57 in the main display and the number of the test being performed in the lower display. Additional meter displays occur depending on the test being performed.
  • Page 69 Checks that the keypad is functioning properly. During this test, each key must be pressed, one at a time, at the 0 prompt for Models 410Aplus, 420Aplus and 710Aplus, and PRESS ALL KEYS for Models 520Aplus, 525Aplus, 720Aplus and 920Aplus.

  • Page 70: Operator Assistance Codes

    The meter has a self-test circuit that verifies proper electronic operation. During self-test a special series of codes, E-1 through E-8 indicate a problem with the meter hardware. See Table I. Should one of these codes appear contact Thermo Orion’s Technical Service Department at 1-800-225-1480. Table I Operator Assistance Codes...
  • Page 71 1. Verify buffer as 1.68, 4.01, 7.00, 10.01, or 12.46. For Models 410Aplus and 420Aplus verify buffer as 4.01, 7.00, or 10.01. 2. Press any key and recalibrate using fresh buffer.
  • Page 72 Benchtop pH/ISE Meter Instruction Manual Error Code Problem Probable Remedy E-22 Calibration The millivolts being measured are Std Error the same for two different standards. Check that two different standards or buffers are being used and that the correct one is being measured. 1.
  • Page 73 4. Check your cable to make sure it matches the pin configuration of the meter. Use Thermo Orion Cat. No. 0ACBL0 for IBM PC or compatible devices. E-28 Incremental...
  • Page 74 Benchtop pH/ISE Meter Instruction Manual Error Code Problem Probable Remedy 4. Make sure electrode(s) are properly identified, connected and filled. 5. If error persists, measure a standard of known concentration with the same background as the sample to be measured. Adjust the standard concentrations and volumes until results are obtained.
  • Page 75 Benchtop pH/ISE Meter Instruction Manual Error Code Problem Probable Remedy E-32 Blank Error. The meter is unable to calculate a Models 710Aplus, blank value. This error occurs 720Aplus, during a three or more point and 920Aplus calibration, when one solution has been defined as zero concentration and the actual concentration of the blank is substantially greater than the...
  • Page 76 C. Meter Operation Problem Table III – Meter Operation Problem Problem Probable Cause Remedy No Display No power to meter For Models 410Aplus, 420Aplus, 710Aplus press the power key. For all models, check that the line converter is plugged in securely. Autoshutoff may...
  • Page 77 Benchtop pH/ISE Meter Instruction Manual Problem Probable Cause Remedy Trouble Some electrodes Perform a manual calibration Calibrating in may operate outside Autocalibration the limits of ± 0.5 Buffers used may be pH units. out of specification. Repeat calibration using fresh buffers or from a different lot.

  • Page 78: Service And Repair

    Benchtop pH/ISE Meter Instruction Manual Chapter XI Service and Repair A Return Authorization Number must be obtained from Thermo Orion Technical Service before returning any product for in-warranty or out-of- warranty repair, replacement, or credit. Outside of North America consult your authorized Thermo Orion dealer,...

  • Page 79: Notice Of Compliance

    Benchtop pH/ISE Meter Instruction Manual Chapter XII Notice of Compliance This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial...

  • Page 80: Declaration Of Conformity

    Conducted Susceptibility These products have been manufactured in compliance with the provisions of the relevant Thermo Orion manufacturing and test documents and processes. Further, these documents and processes are recognized as complying with ISO 9002 by QMI, listed as File # 001911.
  • Page 81 Benchtop pH/ISE Meter Instruction Manual Certificate of Conformity...

  • Page 82: Instrument Warranty

    For service, call Thermo Orion (or its authorized dealer outside the United States and Canada). Thermo Orion reserves the right to ask for proof of purchase, such as the original invoice or packing slip.
  • Page 83 (12) months from the date of purchase by the customer or eighteen (18) months from date of shipment from Thermo Orion, whichever is earlier, except for abuse or breakage of electrodes. 93 and 97 ionplus Series sensing modules are warranted to...
  • Page 84 (24) months from the date of purchase by the user or thirty (30) months from the date of shipment from Thermo Orion, whichever is earlier, provided use is in accordance with the operating limitations and maintenance procedures in the instruction manual and when not having been subjected to accident, alteration, misuse, or abuse.
  • Page 85 Thermo Orion Technical Service (or its authorized dealer outside the United States and Canada). Technical Service will issue a Return Authorization (RA) for all repair services. You must have an Thermo Orion RA prior to returning/forwarding any product to Thermo Orion. Instrument Warranty...

  • Page 86: Ordering Information

    220V. Includes Thermo Orion combination ROSS electrode, 8102BN. 0520A3 Model 520Aplus Benchtop pH/mV/Temperature Meter includes Thermo Orion Triode 3 in 1 combination pH/ATC probe, 110V wall adapter, benchtop meter starter kit (OBCHSK). 0525A0 Model 525Aplus pH/mV/Temperature Meter with custom vacuum fluorescent display, 110V.
  • Page 87 9107BN Thermo Orion Low Maintenance Triode Combination pH/ATC probe for Thermo Orion A Series Meters. 917005 Epoxy ATC Probe for Thermo Orion A Series Meters. 917006 Glass ATC Probe for Thermo Orion A Series Meters. 8102BN Ross Combination Glass pH Electrode.
  • Page 88 Electrode Rinse , 25 pk 910001 pH Electrode Storage Solution, 475 mL NOTE: A wide selection of pH, Ion Selective Electrodes and replacement parts are available. Contact Thermo Orion or your local authorized distributor for more information. Ordering Information...
  • Page 89 Benchtop pH/ISE Meter Instruction Manual Ordering Information...
  • Page 90 PRINTER ERROR E-31 BAD VALUE power See Manual for other Error Codes. pH meter model 410 Front Panel Of 410Aplus Operating Mode Indicates instrument operating mode. SETUP Indicates meter is in the SETUP mode, accessed by pressing mode. CALIBRATE Indicates meter is in the CALIBRATION mode, accessed by pressing mode.

  • Page 91: Auto Shut Off

    Benchtop pH/ISE Meter Instruction Manual Primary Key Pad Functions, Models 410Aplus Press to enter a value during calibration or setup. May also be used to scroll through the setup menu without changing any parameters. Press to cancel or to change to a parameter before entering.
  • Page 92 Benchtop pH/ISE Meter Instruction Manual Appendix B Overview of Meter Functions Model 420Aplus, 710Aplus SETUP CALIBRATE MEASURE ready bold ° C Rel mV Conc SETUP: READY HOLD BEEP AUTOSHUTOFF SLOPE measure RESOLUTION ISOPOINT timer print RESET TIMER INTERVAL REMAINING TIME SET REAL TIME SET DATE mode...
  • Page 93 Benchtop pH/ISE Meter Instruction Manual Displayed when 2nd has been pressed, indicating the meter is ready to perform a second function, cal, timer, setup, or print. ready Displayed when the electrode is stable. READY may be turned on or off in the SETUP menu. hold Displayed when the pH reading is frozen after reaching stability.
  • Page 94 Benchtop pH/ISE Meter Instruction Manual Primary Key Pad Functions, Models 420Aplus, 710Aplus Press to enter a value during calibration or setup. May also be used to scroll through the setup menu without changing any parameters. Press to cancel or to change to a parameter before entering. measure Press for sample analysis.
  • Page 95 Benchtop pH/ISE Meter Instruction Manual Secondary Key Pad Functions, Models 420Aplus, 710Aplus All second functions are accessed by first pressing 2nd then pressing one of the following: Press to start calibration. timer Press to start the timer. When the preset time has elapsed the instrument will beep for 1 minute (or until a key is pressed).
  • Page 96 Benchtop pH/ISE Meter Instruction Manual The following parameters are accessed in the setup menu: Code Function Description READY Turning on READY will cause the ready indicator to be displayed when the electrode signal is stable. The default setting is on. HOLD Turning HOLD on will cause the display to freeze during sample measurements when...
  • Page 97 Benchtop pH/ISE Meter Instruction Manual Code Function Description ISOPOTENTIAL Use to change the isopotential point POINT for a particular pH electrode. In pH mode the default value is 7.00. The isopotential point may not be changed in any other mode. NOTE: Setup function 2-3 Isopotential point is only accessible in pH mode.

  • Page 98: Low Alarm Limit

    Benchtop pH/ISE Meter Instruction Manual Code Function Description SET DATE Sets the current date. When the code 3-4 is displayed in the lower field, the current date (month: day) is displayed in the main field. Press yes, or change the date as needed, then press yes.
  • Page 99 Benchtop pH/ISE Meter Instruction Manual Code Function Description SET PRINT Sets the timed print interval. The maximum print INTERVAL is 23 hours, 59 minutes, and 59 seconds. The minimum print interval is 5 seconds. When the code 5-2 is displayed in the lower field, the current print interval hours will flash in the main display.
  • Page 100 Benchtop pH/ISE Meter Instruction Manual Code Function Description DATALOG Sets the timed datalogger interval. The INTERVAL maximum interval is Interval 23 hours, 59 minutes, and 59 seconds. The minimum interval is five (5) seconds. When the code 6-2 is displayed in the lower field, the current datalogger interval hours are displayed in the main field indicated by an H in the left position.
  • Page 101 Benchtop pH/ISE Meter Instruction Manual Overview of Meter Functions-420Aplus,710Aplus...
  • Page 102 Benchtop pH/ISE Meter Instruction Manual Appendix C Overview of Meter Functions Models 520Aplus, 525Aplus, 720Aplus, and 920Aplus mode calibrate measure cal edit stability hold resolution slope incr tech channel electrode print activate set temp data log set timer ready date/time standby data/print beep...
  • Page 103 Benchtop pH/ISE Meter Instruction Manual Key 1 Mode Pressing mode (1) changes the instrument operating mode. The current operating mode designation is displayed to the right of the main display. Key 2 Calibrate Pressing calibrate (2) starts a calibration. The time and date of the last calibration are displayed, then the instrument starts the calibration sequence.
  • Page 104 Benchtop pH/ISE Meter Instruction Manual Key 4 Hold Pressing hold (4) acts as a toggle changing the hold setting. This function freezes the display when the electrode signal is stable. The prompt line verifies your selection then returns to the measure mode. Example: HOLD ON.
  • Page 105 Benchtop pH/ISE Meter Instruction Manual Channel (525Aplus, 720Aplus and 920Aplus only) Press 2nd then channel (5) to change the electrode channel. On the 525Aplus and 720Aplus the channels are designated as CH-1 or CH-2. For the 920Aplus, the channel designation appears before the electrode I.D., for example, 1-pH or 2-F-.

  • Page 106: Activate Timer

    Benchtop pH/ISE Meter Instruction Manual Key 8 Activate Press activate (8) to start the timer interval. An audible signal will sound at the completion of the timer interval. Activate Timer Once the timer interval has been set, it is easily activated by pressing activate (8).
  • Page 107 Benchtop pH/ISE Meter Instruction Manual Key 9 Set Temp Press set temp (9) to access the set temp function to manually set the temperature. This is used for manual temperature compensation in pH mode and in concentration mode on the Model 920Aplus. If a temperature probe is in use, the meter will not allow a temperature to be set manually.
  • Page 108 Benchtop pH/ISE Meter Instruction Manual Key +/- Date/Time Setting the Date and Time Press date/time (+/-), then follow the prompts to set the current date & time. Prompt Keypress/Action Press date/time (±) 1. ENTER MONTH Enter the current month, then press yes. 2.

  • Page 109: Manual Print

    Benchtop pH/ISE Meter Instruction Manual Key Decimal Point Data/print modes Press the decimal point to set the datalog function and the print mode. See the descriptions below for instructions. Print mode is presented first, then the datalog function. Printing Press data/print modes to select a print option, then follow the prompts: Prompt Keypress/Action Press data/print modes.

  • Page 110: Datalog Interval

    Benchtop pH/ISE Meter Instruction Manual Automatic Datalog Function The meters have an internal datalogger that will record and store a maximum of 25 points automatically. The data points remain in memory until cleared. Prompt Keypress/Action Press data/print modes 1. MANUAL PRINT The current print mode is displayed.
  • Page 111 Benchtop pH/ISE Meter Instruction Manual Alarm The Models 520Aplus, 525Aplus, 720Aplus, and 920Aplus have an alarm function. Separate alarms can be set for each mode and for channels 1 and 2 (on the 525Aplus, 720Aplus and 920Aplus). The alarm limits can be set at the limits of each measuring range, -2.000 to +19.999 pH, -1600.0 to +1600.0 mV, -1999.9 to +1999.9 relative mV, and 0.0 to 19900 for concentration (720Aplus and 920Aplus only).Press 2nd then alarm to...

  • Page 112: Transfer Data

    Benchtop pH/ISE Meter Instruction Manual Options Press 2nd then options (0) to change the isopotential point, clear or transfer data from the datatlogger, select the autoshutoff feature, or identify the use of a switchbox (920Aplus only) The menu loop is as follows: OPTIONS MENU CHANGE ISO PT? TRANSFER DATA?

  • Page 113: Data Clear

    Benchtop pH/ISE Meter Instruction Manual Transfer Data To transfer data from the internal datalogger to a printer or computer press yes in response to the TRANSFER DATA? prompt. While the data is being transferred the prompt line will display DATA TRANSFER. On completion the DATA TRANSFERRED prompt will be displayed followed by the next option in the menu.
  • Page 114 The 920Aplus stores in memory calibration data for seven channels. Additional channels can be accessed when using the 920Aplus with the Thermo Orion Model 607 electrode switchbox. Press the channel selection switch on the Model 607. Press 2nd, then channel (5) on the Model 920Aplus, until the desired channel is selected on both the instrument and switchbox.
  • Page 115 Benchtop pH/ISE Meter Instruction Manual Overview of Meter Functions 520Aplus,525Aplus,720Aplus and 920Aplus...
  • Page 116 Benchtop pH/ISE Meter Instruction Manual Appendix D Meter Default pH electrode slope 100.0% pH isopotential point 7.000 pH resolution .001 temperature 25.0 ready hold beep autoshutoff timer interval 5 seconds print mode 1-manual print print interval 1 minute datalog mode 0-off (520Aplus, 525Aplus, 710Aplus, 720Aplus, and 920Aplus) measurement channel...
  • Page 117 Benchtop pH/ISE Meter Instruction Manual Meter Default...
  • Page 118 Benchtop pH/ISE Meter Instruction Manual Appendix E Multipoint Calibration Curve Models 410Aplus, 420Aplus, 520Aplus, 525Aplus, 710Aplus, 720Aplus, and 920Aplus utilize a “point-to-point” scheme for multipoint calibrations in both pH and CONCENTRATION modes. In this technique, straight line segments are “drawn” between each successive pair of calibration points.
  • Page 119 Benchtop pH/ISE Meter Instruction Manual Multipoint Calibration Curve...
  • Page 120 Benchtop pH/ISE Meter Instruction Manual Appendix F Automatic Blank Correction The Models 710Aplus, 720Aplus, and 920Aplus have a feature known as automatic blank correction. In this technique the meter decides whether blank correction is the best measurement strategy by analyzing the electrode response during a multipoint calibration.
  • Page 121 Benchtop pH/ISE Meter Instruction Manual This blank may be a true reagent blank, traces of analyte ion in the reagents, or it may be the “mud” value of the electrode. It could also be an interferent in the reagents that becomes apparent at low levels of analyte ion, or it could be any combination of these effects.
  • Page 122 Benchtop pH/ISE Meter Instruction Manual When blank correction is implemented, the slope value for the electrode may be outside the range of values normally considered acceptable during an ordinary calibration. For best results calibration standards should be close in range to the expected sample concentrations and should bracket the expected sample concentration.
  • Page 123 Benchtop pH/ISE Meter Instruction Manual Automatic Blank Correction...
  • Page 124 Benchtop pH/ISE Meter Instruction Manual Appendix G Determining Isopotential Points To take advantage of the temperature compensation feature for concentration measurements in the Model 920Aplus, it is necessary to experimentally determine the isopotential point of the electrode in use. The slope of all electrodes changes with temperature. This is due in fact to the slope term, S, in the Nernst equation.

  • Page 125: Determining An Isopotential Point

    Benchtop pH/ISE Meter Instruction Manual Determining an Isopotential Point Prepare several standards with concentration ranges over the measuring range of the electrode. Measure the millivolt value of the standards at room temperature, i.e. 20-25°C. Measure the millivolt value of each standard at 75°C. Measure the millivolt value of each standard at 10°C.

  • Page 126: Specifications

    SPECIFICATIONS 410Aplus 420Aplus 520Aplus 525Aplus pH range -2.000 to 19.999 -2.000 to 19.999 -2.000 to 19.999 -2.000 to 19.999 resolution 0.001/0.01/0.1pH 0.001/0.01/0.1pH 0.001/0.01/0.1pH 0.001/0.01/0.1pH relative accuracy ±0.005 ±0.005 ±0.005 ±0.005 slope 80 to 120% 80 to 120% 80 to 120%...
  • Page 127 SPECIFICATIONS 710Aplus 720Aplus 920Aplus pH range -2.000 to 19.999 -2.000 to 19.999 -2.000 to 19.999 resolution 0.001/0.01/0.1pH 0.001/0.01/0.1pH 0.001/0.01/0.1pH relative accuracy ± 0.005 ±0.002 ±0.002 slope 80 to 120% 80 to 120% 80 to 120% concentration range 0.000 to 19900 0.000 to 19900 0.000 to 19900 resolution...
  • Page 128 AQUAfast, Cahn, EZFlash, Ionalyzer, ionplus, KNIpHE, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHix, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, Sure-Flow, Titrator PLUS, TURBO2 and Wine Master are registered trademarks of Thermo Orion. 1-888-pHAX-ION, A + , All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTOCAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-STIR, AUTO-READ, BOD AutoEZ,...
  • Page 129 Int’l. Fax: 978-232-6031 Thermo Orion Europe 12-16 Sedgeway Business Park Witchford, Cambridgeshire England, CB6 2HY Tel: 44-1353-666111 Fax: 44-1353-666001 Thermo Orion Far East Room 904, Federal Building 369 Lockhart Road Wanchai, Hong Kong Tel: 852-2836-0981 Fax: 852-2834-5160 Thermo Orion Customer Support Toll Free: 800-225-1480 www.thermoorion.com...

This manual is also suitable for:

420aplus520aplus525aplus710aplus720aplus920aplu

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