ADWA AD1000 User Manual
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ADWA AD1000 User Manual

Ph/mv/ise/temperature meter
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USER MANUAL
AD1000 and AD1020
pH/mV/ISE/Temperature
Bench Meters
w w w . a d w a i n s t r u m e n t s . c o m
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  • Page 1 USER MANUAL AD1000 and AD1020 pH/mV/ISE/Temperature Bench Meters w w w . a d w a i n s t r u m e n t s . c o m...
  • Page 2 Dear Customer, Thank you for choosing an Adwa product. Please read carefully this manual before starting operations. This instrument is in compliance with the EMC directive 2004/108/EC and its standards, and Low Voltage Directive 2006/95/EC and its standards for electrical equipments.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Introduction ............... 4 Technical Data ............6 Front and Rear Panels ..........8 Operational Guide ..........12 pH Calibration ............19 Relative mV Calibration ......... 29 ISE Calibration (AD 1020 only) ......30 Good Laboratory Practice ........35 Setup ...............

  • Page 4: Introduction

    INTRODUCTION AD1000 and AD1020 are professional bench meters with ranges for pH, ORP (Oxidation Reduction Poten- tial), ISE (AD1020 only) and temperature measurements. Relative mV readings are also pro- vided. Main features include: • Up to 5-point calibration with 7 memorized buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 &...
  • Page 5 • Large easy-to-read LCD showing pH or ISE (AD1020 only), mV and temperature readings si- multaneously, together with graphic symbols • HOLD feature to freeze the stable reading on the • GLP feature to view last calibration data for pH, ISE and relative mV •...

  • Page 6: Technical Data

    TECHNICAL DATA Range -2.00 to 16.00 pH / -2.000 to 16.000 pH ±2000 mV 0.001 to 19999 ppm (AD1020 only) - 20.0 to 120.0°C (- 4.0 to 248.0°F) Resolution 0.01 pH / 0.001 pH 0.1 mV (±999.9 mV) / 1 mV (outside) 0.001 ppm (0.001 to 9.999) 0.01...

  • Page 7: Logging Interval

    ISE Calibration Up to two-point calibration, 5 standard solutions available (AD1020 only) (0.1, 1, 10, 100, 1000 ppm) Temperature Manual or automatic, Compensation -20.0 to 120.0°C (-4.0 to 248.0°F) pH Electrode AD1131B Temperature Probe AD7662 Logging Interval 5 seconds to 180 minutes Printer External serial printer PC Interface...

  • Page 8: Front And Rear Panels

    FRONT AND REAR PANELS Front Panel...
  • Page 9 Rear Panel 1. Power adapter socket 2. Reference input socket 3. BNC connector for pH, ORP or ISE electrodes 4. Temperature probe socket 5. Analog output sockets 6. USB port for PC connection 7. RS232 port for external serial printer connection...
  • Page 10 Keyboard 1. HOLD key, to freeze reading on the LCD 2. PRINT key, to obtain a printout or cancel printing 3. PAPER key, to pull out the external printer paper 4. ON/OFF key, to turn the instrument ON and OFF 5.
  • Page 11 6. Up arrow key, to manually increase the value of temperature or other parameters 7. CLEAR key, to clear calibration or logged data 8. RANGE key, to select measurement unit or switch focused data 9. SHIFT key, to activate the second function key 10.

  • Page 12: Operational Guide

    Note: To select second function, press first SHIFT and then the desired key. The SHIFT tag will appear on the LCD until the desired key is pressed. To leave second function mode, press SHIFT again. OPERATIONAL GUIDE CONNECTIONS • Plug the 12 Vdc adapter into the power supply socket. Note: These instruments feature a non-volatile memory to keep calibration data and all meter settings even when unplugged.
  • Page 13 • Attach the pH, ORP or ISE (AD1020 only) electrode and the temperature probe to the appropriate sockets on the rear panel. For electrodes with separate refer- ence, connect the reference to the proper input socket. • Attach the analog output and serial cables to the con- nectors on the back of the instrument.
  • Page 14 pH MEASUREMENTS Make sure the instrument has been calibrated before taking pH measurements. • Press RANGE to enter pH range. Press RANGE again to change the pH measurement resolution. • Immerse pH electrode tip and tem- perature probe approximately 4 cm into the solution to be tested.
  • Page 15 of the next sample. This will prevent cross contami- nations and condition the electrode before immersing it into the solution to be tested. • The pH reading is affected by temperature. In order to measure the pH accurately, the temperature effect must be compensated for.
  • Page 16 ORP (mV) MEASUREMENTS Oxidation-reduction potential (REDOX) measurements provide the quantification of the oxidizing or reducing power of the tested sample. To correctly perform a redox measurement, the surface of the ORP electrode must be clean and smooth. • Press RANGE to enter the mV range. •...
  • Page 17 RELATIVE mV MEASUREMENTS To enter relative mV mode, press RANGE. The relative mV reading will be displayed on the primary LCD and the current temperature value on the secondary LCD. Note: Press the right or left arrow key to toggle be- tween temperature and absolute mV reading on the secondary LCD.
  • Page 18 ION MEASUREMENTS (AD1020 only) • Press RANGE to enter the ISE mea- surement mode. • Immerse the ISE electrode tip 4 cm into the solution to be tested and wait a few seconds for stable reading. • The instrument displays the ppm reading on the pri- mary LCD and the temperature on the secondary LCD.

  • Page 19: Ph Calibration

    TEMPERATURE MEASUREMENTS Connect the AD7662 temperature probe to the appropriate socket on the rear panel. Immerse the temperature probe into the solu- tion and allow the reading to stabilize. Notes: • The temperature can be displayed in Celsius (°C ) or in Fahrenheit degree (°F).
  • Page 20 For accurate calibration and to minimize cross-contami- nation, use two beakers for each buffer solution: the first one for rinsing the electrode and the second for calibra- tion. If you are measuring in the acidic range, use pH 4.01 or 1.68 as second buffer.
  • Page 21 tion with a pH value different from a standard one. Up to two custom buffers can be set through the setup menu. The custom buffer value can also be changed within a ±1.0 pH window around the set value. For accurate measurements it is recommended to per- form a five-point calibration.
  • Page 22 FIVE-POINT CALIBRATION • Immerse the pH electrode and the tem- perature probe approximately 4 cm into a buffer solution of your choice (pH 1.68, 4.01, 6.86, 7.01, 10.01, 12.45, cus- tom buffer 1 or 2, if set) and stir gently. The temperature probe should be close to the pH electrode.
  • Page 23 • The hourglass tag will blink on the LCD until the read- ing is stable. • When the reading is stable and close to the selected buffer, the CFM tag ap- pears. Press the CFM key to confirm. • The calibrated value is then displayed on the primary LCD and the secondary LCD will display the second expected buffer value, together with CAL and “Cal Point 2”...
  • Page 24 • When the reading is stable and close to the selected buffer, “CFM” tag appears. • Press CFM key to confirm. The cali- brated value is then displayed on the pri- mary LCD and the secondary LCD will display the third expected buffer value. •...
  • Page 25 gently. The temperature probe should be close to the pH electrode. • If necessary, use the arrow keys to select a different buffer value. • The hourglass tag will blink on the LCD until the read- ing is stable. • When the reading is stable and close to the selected buffer value, the CFM tag appears.
  • Page 26 • The instruments store the calibration values and re- turn to normal measurement mode. FOUR, THREE, or TWO-POINT PROCEDURE Proceed as described in the “Five-point calibration” sec- tion and press CAL after the appropriate accepted cali- bration point. The instrument will memorize the calibra- tion data and return to normal measurement mode.
  • Page 27 Notes: • During calibration press RANGE or the right or left arrow keys to toggle between pH buffer and tempera- ture reading on the secondary LCD. • Each time a buffer is confirmed, the new calibration parameters replace the old data of the corresponding buffer.
  • Page 28 CUSTOM BUFFERS If at least one custom buffer was set in SETUP menu, it can be selected for calibration using the arrow keys. Press SHIFT and then SETUP key if you want to adjust the buffer value. The buffer value, displayed on the sec- ondary LCD, will start blinking.

  • Page 29: Relative Mv Calibration

    CLEAR CALIBRATION If the CLEAR key is pressed at any time during calibration, the “CLEAR CAL” tag lights up and the “donE” message is displayed on the secondary LCD. All previous calibrations are cleared and the instrument continues the procedure. The points already confirmed for the current calibration are not deleted.

  • Page 30: Ise Calibration (Ad 1020 Only)

    • Press NUM LOCK again to leave the numeri- cal keys. • When the reading is stable and the relative mV offset is within the offset window (±2000 mV), the CFM tag will be displayed. • Press CFM to confirm relative mV calibration. The instrument will return to measurement mode.
  • Page 31 PREPARATION • Set the proper ion charge through the setup item “IonCG”. Note: If the “undF” option is selected in setup menu, the calibration must be a two-point procedure. If the user try to exit the calibration mode after confirming the first point, the “----” message ap- pears on the LCD.
  • Page 32 TWO-POINT CALIBRATION • Immerse the ISE electrode approxi- mately 4 cm into the first standard so- lution and stir gently. • Press CAL key. The primary LCD will display the ppm value using current off- set and slope. • The “CAL” and “Cal Point 1” tags light up, and the 0.1 ppm standard value is shown on the secondary LCD.
  • Page 33 • Press CFM to confirm calibration. • The calibrated value will be displayed on the primary LCD and the second expected standard solution on the sec- ondary LCD. Note: The instrument will automatically skip the stan- dard value used for the first point. •...
  • Page 34 Notes: • If the mV value is out of the ±2000 mV range, the “WRONG” and “BUFFER” tags are dis- played. Check if the correct standard has been used, or refresh the electrode by following the maintenance procedure described on page 69. If necessary, change the standard solution or the electrode.

  • Page 35: Good Laboratory Practice

    ONE-POINT CALIBRATION • To perform a single point calibration, press CAL after the first calibration point has been confirmed. The instrument will store the one-point calibration data and return to normal measurement mode. GLP (GOOD LABORATORY PRACTICE) GLP is a set of functions that allows data storage (and retrieval) about the electrode status and maintenance.
  • Page 36 LAST pH CALIBRATION DATA The last pH calibration data are stored automatically after a successful calibration. To view the pH calibration data, from pH measurement mode press SHIFT and then GLP key. The instrument will display the date (yyyy.mm.dd) of the last calibra- tion.
  • Page 37 • pH calibration offset value. • pH calibration slope (the GLP slope is the average of the calibration slopes; the percentage is referred to the ideal value of 59.16 mV/pH). • Calibration buffers in the order used for calibration, together with the corresponding warnings.
  • Page 38 Notes: • The “OLd” message displayed beside a buffer value means that this buffer was not used dur- ing last calibration. Press SHIFT and then SETUP key to see the old calibration date (or time, if old calibration date is the same as the last procedure).
  • Page 39 LAST ISE CALIBRATION DATA (AD 1020 only) Last ISE calibration data are stored automatically after a successful calibration. To view the ISE calibration data, from ISE measure- ment mode press SHIFT and then GLP key. The instru- ment will display the date (yyyy.mm.dd) of last calibration. Use the up arrow key to view all logged calibration pa- rameters in the following sequence: •...
  • Page 40 • Second ISE calibration buffer on the primary LCD and corresponding mV value on the secondary LCD. Notes: • If a single point calibration is performed after a two-point calibration, the instrument will keep the old slope. • The “no bUF” message means that calibration was performed at one point.
  • Page 41 Use the up arrow key to view all logged calibration pa- rameters in the following sequence: • Relative mV calibration offset and time (hh:mm) as in pH GLP mode. • Instrument ID as in pH GLP mode. Notes: • Press SHIFT and then GLP key at any moment to return to normal measurement mode.

  • Page 42: Setup

    SETUP Setup mode allows viewing and modifying the following parameters: • Calibration time-out alarm • One-point calibration behavior • Custom buffer 1 • Custom buffer 2 • Ion charge (AD1020 only) • Alarm high limit • Alarm low limit • Start condition of automatic logging •...
  • Page 43 • To enter SETUP mode, from measurement mode press SHIFT and then SETUP. • Press CAL to change the item value. The selected item (e.g. hour, while setting the time) and “CFM” tag will blink. • Use the arrow keys to scroll the available values or insert the desired value with the numerical keys.
  • Page 44 • Press SHIFT and then SETUP to exit the setup menu at any time. • When the printer status is “ON”, the instrument asks for printing a setup report. Press CFM to print the report or CAL to return the normal measurement mode. The table on next page lists all available setup param- eters, their valid values and the factory settings (default).
  • Page 45 Item Description Valid values Default CAL DUE Alarm time-out OFF or 1 to 7 days 1 Pnt 1-point cal. behavior Pnt, OFFS Custom C1 Custom buffer 1 -2.00 to 16.00 pH Custom C2 Custom buffer 2 -2.00 to 16.00 pH IonCG Ion charge undF, -2, -1, 1, 2...
  • Page 46 Notes: • The custom buffers can be set only with 0.001 resolution. If 0.01 pH resolution is selected dur- ing calibration, the displayed custom buffer value will be a rounded one. • While in setup changing mode for items calibra- tion alarm time-out, custom buffer, alarm limits, start and stop condition, press CLEAR to set the selected item to the default value.

  • Page 47: Alarm Setup

    ALARM SETUP • Select one of the alarm items. The displayed value will be the one previously set. • Press RANGE to select the range for the alarm and the corresponding range tag will blink. • Press the CAL key to enter setup changing mode. Set the new value using the arrow or the numerical keys.
  • Page 48 • If both alarm items are set, the instrument will beep when the reading is above alarm high limit or below alarm low threshold. Note: If the “AL.HI” value is minor than or equal to the “AL.LO” value, the WRONG tag will blink. AutoLOG SETUP AutoLOG Start Condition •...
  • Page 49 • Pressing RANGE while in setup viewing mode, the instrument will display one of the following options: “dur”, “SAMP’, “rdG” & “pH”, “rdG”& “mV”, “rdG” & “Rel mV” and “rdG” & “ppm”. • Press the CAL key and the instrument will enter the setup changing mode and display one of the following messages: •...

  • Page 50: Logging/Storing

    LOGGING / STORING This feature allows the user to log automatically pH & Rel mV or ISE & Rel mV measurements, together with the temperature reading. All logged data can be trans- ferred to a PC through the USB port. The maximum logging space is 1000 record locations (samples).
  • Page 51 The instrument will display the current date on the pri- mary LCD and the record number on the secondary LCD, together with the ‘LOG’ tag blinking for a few seconds. Then the number of free locations is shown. If there are less than 6 memory locations left, the record number and the “Lo”...
  • Page 52 The instrument returns to normal measurement mode. AUTOMATIC LOGGING The user-selectable automatic logging options make these instruments very useful in a wide range of applications. • Start pressing the INTVLOG key or set starting time/ date. Stop after a set duration. •...
  • Page 53 Notes: • For different automatic logging modes, the log- ging starts/stops automatically after the set start/ stop condition is reached. • The “AutoLOG” tag will blink if one of these modes is selected and the start condition is not reached. After the data logging is started, the current value is displayed on the primary LCD and the temperature on the secondary LCD, together with the “AutoLOG”...
  • Page 54 Notes: • If printer is ON and the logging interval is at least 30 seconds, each logged sample is printed. • If the pages for automatic logging are full, the “FULL LOC” message is displayed, as in log- on-demand mode. VIEWING LOGGED DATA To retrieve stored information, press MEM RCL from normal measurement mode.
  • Page 55 Pressing SHIFT and then SETUP key while in MEM RCL mode, the secondary LCD will toggle between the lot and the record number. Use the arrow keys to select a different lot or record. Press RANGE or the right arrow key to scroll all logged parameters, displayed as shown in the table below: Parameter Primary LCD...
  • Page 56 Notes: • To view the previous logged parameter, press the left arrow key. • In Rel mV MEM RCL mode the offset value is not available and the display shows ‘----’. • The record number is an identification number inside a lot. After scrolling all logged parameters, the meter displays the “dEL”...
  • Page 57 • Press CLEAR to delete the selected lot/record or all lots. Note: Positions remain free in the log-on-demand lot by deleting the last logged sample or all lots. • If the “dEL All” option was selected, all logged data are deleted and the instrument returns to normal mea- surement mode.

  • Page 58: Hold

    HOLD To freeze a stable reading on the LCD, press HOLD key from normal measurement mode. The “Auto” and “H” tags will blink on the LCD until the reading stabilizes. When the reading is stable, the “Auto” and “H” tags stop blinking and the reading is frozen.

  • Page 59: Printing

    PRINTING When connected to an external serial printer, a com- plete set of information can be printed. Printer specifications: • at least 16 characters / line • baud rate 9600 • 9-pin RS232 input Data can be printed on demand (from measurement, GLP and SETUP modes) by pressing PRINT key or auto- matically (from automatic logging and log-on-demand modes).
  • Page 60 Note: For ISE (AD1020 only) and relative mV mea- surement modes, the ppm and Rel.mV values will be printed. When in GLP mode, the printout provide the following information: GLP pH • For pH range: Instr ID 0003 Date 2004/01/01 Time 01:04:32 Cal Time Out OFF...
  • Page 61 When in SETUP mode, the following information can be printed: • If PRINT is the first key pressed INSTRUMENT SETUP Calibration after entering the setup mode, a Alarm Time setup table of contents will be point behavior printed. pH Custom Buf. 1 pH Custom Buf.
  • Page 62 • When exiting the setup mode, the instrument asks if the setup report has to be printed. The “Prn” message will be displayed, together with the printer symbol ( and the CFM tag blinking. SETUP REPORT Instr ID 0003 Time Point Custom Buffer...
  • Page 63 From setup mode, if CAL and then PRINT is pressed for a chosen pa- ALARM TIME-OUT (OFF or 1-7) rameter, a help printout will pro- Active Keys: vide the following information (e.g. ^ -increment v -decrement Alarm Time-Out): CAL-exit, no save CFM-save &...

  • Page 64: Temperature Calibration

    If temperature measurements are not accurate, tempera- ture new calibration should be performed. For an accurate recalibration, contact your dealer or the nearest Adwa Customer Service Center, or follow the instructions below. • Prepare a vessel containing ice and water, and an- other one containing hot water at approximately 50°C...
  • Page 65 • Immerse the temperature probe into the vessel with ice and water as close as possible to the reference thermometer. Allow a few seconds for probe thermal stabilization. • Use the arrow keys to set the reading on the second- ary LCD to that measured by the reference thermom- eter.

  • Page 66: Mv Calibration (For Technical Personnel Only)

    CALIBRATION (for technical personnel only) The instruments are factory calibrated for mV range. Adwa’s ORP electrodes are interchangeable and no mV calibration is needed when they are replaced. If measurements are not accurate, a mV recalibration should be performed.
  • Page 67 The CAL tag lights up and the secondary LCD shows 0.0 mV. • Set the simulator to 0.0 mV. When the reading is stable and close to the selected calibration point, the CFM tag starts blinking. • Press CFM to confirm and the secondary LCD will display the second expected value (600.0 mV).

  • Page 68: Analog Output

    • To return to normal measurement mode, press CAL at any moment during calibration. • If the calibration procedure is ended after the 600.0 mV point is confirmed, the meter returns to normal measurement mode and stores a 2- point calibration data. ANALOG OUTPUT For the full range of each measurement, the analog out- put varies from - 2000 to 2000 mV.

  • Page 69: Ph Electrode Conditioning & Maintenance

    pH ELECTRODE CONDITIONING & MAINTENANCE PREPARATION PROCEDURE Remove the pH electrode protective cap. DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal with electrodes and they will disappear when rinsed with water. During transport, tiny bubbles of air may form inside the glass bulb affecting proper functioning of the electrode.

  • Page 70: Periodic Maintenance

    For refillable electrodes: If the filling solution (electrolyte) is more than 2.5 cm below the fill hole, add AD7082 electrolyte solution. For faster response, unscrew the fill hole screw during measurements. STORAGE PROCEDURE To minimize clogging and assure a quick response time, the glass bulb and the junction of the pH electrode should be kept moist and not allowed to dry out.

  • Page 71: Cleaning Procedure

    For refillable electrodes: Refill the electrode reference chamber with fresh AD7082 electrolyte solution. Allow the electrode to stand upright for 1 hour. Follow the storage procedure above. CLEANING PROCEDURE Soak in deionized water for approximately 30 minutes. IMPORTANT: After performing any of the cleaning procedures, rinse the electrode thoroughly with deion- ized water, refill the reference chamber with fresh elec- trolyte and soak the electrode in AD70300 storage...

  • Page 72: Troubleshooting Guide

    TROUBLESHOOTING GUIDE SYMPTOMS PROBLEM SOLUTION Slow response/ Dirty pH electrode. Soak the electrode tip excessive drift. in deionized water solution for 30 minutes and then follow the cleaning Reading Clogged/dirty procedure. fluctuate up and junction. Low Clean the electrode. down (noise). electrolyte level Refill with fresh (refillable electrodes...
  • Page 73 SOLUTION SYMPTOMS PROBLEM Replace the probe. Out of order The meter does not work with the temperature probe. temperature probe. Replace the Broken or out of The meter fails to electrode. calibrate or gives order pH electrode. faulty readings. Follow displayed Explicit warnings Dirty/broken pH instructions.

  • Page 74: Electrodes, Probes And Solutions

    ELECTRODES, PROBES AND SOLUTIONS AD1131B Refillable pH electrode with glass body, tip protection bottle, BNC connector and 1 m cable AD1230B pH electrode with Epoxy body, tip pro- tection bottle, BNC connector and 1 m cable AD3230B ORP electrode with Epoxy body, tip protection bottle, BNC connector and 1 m cable AD7662...
  • Page 76 ADWA INSTRUMENTS Kft. Alsókikötõ sor 11, 6726 Szeged, Hungary Tel. +36 62 317 878 Fax +36 62 550 610 e-mail: sales@adwainstruments.com www.adwainstruments.com MANAD1000 09/14...

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