Fisher Scientific accumet BASIC AB 15 Manual
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Fisher Scientific accumet BASIC AB 15 Manual

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Summary of Contents for Fisher Scientific accumet BASIC AB 15

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1 INTRODUCTION 2 GETTING STARTED Connectors 3 USING THE METER Electrodes Display/ Keys Screen Display 4 pH OPERATION Using Setup 4.1.1 View pH Electrode Slope 4.1.2 Clear pH Standardization 4.1.3 pH Buffer Group 4.1.4 Temperature Unit 4.1.5 Set pH Resolution 4.1.6 Stability Indicator (Only available in AB15+)

  • Page 4: Introduction

    INTRODUCTION Thank you for selecting the Accumet AB 15/ 15+ bench-top meter. This instruction manual describes the operation of the meter. The state-of-art meter that you have purchased is easy to operate and will guide you through the various functions by displaying easy to understand prompts.

  • Page 5: Getting Started

    GETTING STARTED Connectors 1. Review the layout and arrangement of the rear connector panel.
  • Page 6 2. Connect the electrode arm to the base. 3. Connect the power cable to the connector cable to the rear connector panel power jack and to a power source.

  • Page 7: Using The Meter

    USING THE METER Electrodes This meter allows you to use two types of pH electrodes: the conventional glass pH electrode and the field effect transistor (FET) electrode. If both types of electrodes are connected, the meter will read the FET electrode. 1.
  • Page 8 3. Rinse and blot-dry (don’t wipe) electrodes between each measurement. Rinse electrodes with distilled or deionized water, or a portion of the next solution to be measured. Between measurements, store conventional electrodes storage solution, pH 4 buffer, or KCI solution. Always leave the filling hole liquid...

  • Page 9: Display/ Keys

    Display/ Keys Overview of the meter screen display and function key layout. Press std key to initiate standardization from measure mode. Or press std key at the Standardize mode to confirm the standardization and return to Measure mode. Press mode to select pH, mV and Relative mV.
  • Page 10 Meter Display: AB15...

  • Page 11: Screen Display

    Screen Display Familiarize yourself with the layout of the digital screen display.

  • Page 12: Ph Operation

    pH OPERATION Using Setup The setup button is in essence a scroll key which allows you to change several operating parameters. While in the setup mode you may: Press the mode key to return to the Measure mode screen without making a change or selection in the setup mode.
  • Page 13 View pH electrode slope Baud Rate % S L OP E - View the pH electrode slope in - To set the baud rate % after 2-point standardization (bits of second) of the is successfully done. communication protocol interface. Select from 4800, P rint 9600, 19200 or 38200.
  • Page 14 View pH electrode slope % S L OP E - View the pH electrode slope in % after 2-point standardization is successfully done. View Clear pH standardization clear - To clear pH standardized BUFFER buffers. pH buffer group - Select from 3 different buffer groups, each containing 5-6 BUFFER select...

  • Page 15: View Ph Electrode Slope

    4.1.1 View pH Electrode Slope This setup menu allows you to view the pH electrode slope in % after 2-point standardization is successfully done. Press setup to view the pH electrode slope in %. % S L OP E press setup to select options press...

  • Page 16: Clear Ph Standardization

    4.1.2 Clear pH Standardization The setup option allows you to clear the previous pH standardization. To clear pH Standardization 1. Access the Clear pH Standardization menu from the pH Measure screen by pressing the setup key. 2. Press setup again to display the clear BUFFER icon is displayed along with the previously entered buffers.

  • Page 17: Ph Buffer Group

    4.1.3 pH Buffer Group This setup option allows you to select from 3 different buffer groups, for auto buffer recognition. The 3 buffer groups are: USA buffers: 2, 4, 7, 10 and 12 European buffers: 1, 3, 6, 8, 10 and 13 NIST buffers: 1.68, 4.01, 6.86, 9.18 and 12.46 To Select pH Buffer Group...

  • Page 18: Temperature Unit

    4.1.4 Temperature Unit This setup option allows you to select unit of measure for Temperature either in °C or °F. To Select Temperature Unit Access the Select Temperature Unit menu from the pH Measure screen by pressing the setup key. Press setup to scroll until screen displays as follows.

  • Page 19: Set Ph Resolution

    4.1.5 Set pH Resolution This setup option allows you to select various pH resolution either 0.1, 0.01 or 0.001 (only available in AB15+). To Select pH Resolution Access the Select pH Resolution menu from the pH Measure screen by pressing the setup key. Press setup to scroll until screen displays as follows.

  • Page 20: Stability Indicator (Only Available In Ab15+)

    Press enter key to confirm selection OR press mode key to exit to measurement OR press setup key to access other setup options. 4.1.6 Stability Indicator (Only available in AB15+) This setup option allows you to set the stability indicator to be displayed on the screen whenever reading has stabilized, thus minimizes guesswork.
  • Page 21 ST AB L E press setup to select options press enter to accept Press enter key to confirm selection OR press mode key to exit to measurement OR press setup key to access other setup options.

  • Page 22: Baud Rate (Only Available In Ab15+)

    4.1.7 Baud Rate (Only available in AB15+) This setup option allows you to set the baud rate (bits per second) of the communication protocol interface. To Set Baud Rate 1. Access the Set Baud Rate menu from any Measure screen by pressing the setup key.
  • Page 23 3. Press enter key to make selection and exit to measurement OR use the setup key to go to other baud rate selection. (4800, 9600, 19200 and 38400). P rint setup P rint setup P rint 4. Press enter key to confirm selection OR press mode to exit from this page, and return to measure screen.

  • Page 24: Parity Bit (Only Availble In Ab15+)

    4.1.8 Parity Bit (Only availble in AB15+) This setup option allows you to set the parity bit of the communication protocol interface. To Set Parity Bit 1. Access the Set Parity Bit menu from any Measure screen by pressing the setup key. 2.
  • Page 25 3. Press enter key to make selection and return to measurement OR use the setup key to go to other parity setting. [ 0 (none), 1 (odd) or 2 (even)]. Default: 2(even) setup 4. Press enter key to confirm selection OR press mode to exit from this page.

  • Page 26: Stop Bit (Only Available In Ab15+)

    4.1.9 Stop Bit (Only available in AB15+) This setup option allows you to set the stop bit of the communication protocol interface. To Set Stop Bit 1. Access the Set Stop Bit menu from any Measure screen by pressing the setup key. 2.
  • Page 27 3. Press enter key to make selection and return to measurement use the setup key to go to Stop Bit = 2 option. 4. Press enter key to confirm selection OR press mode to exit from this page.

  • Page 28: Print Current & Stored Data/ Clear Stored Data (Only Available In Ab15+)

    4.1.10 Print Current & Stored Data/ Clear Stored Data (Only available in AB15+) This setup option allows you to print current displayed data or data stored in the meter’s memory to a computer or printer via its RS232 interface port. Note all the communication protocol for both the meter and computer/printer must match before successful printing can be performed.
  • Page 29 3. Press enter key to make selection and return to measurement 4. Press setup key again to print stored data option. Print P rint pres s to s et value press setup to select options pres s enter to accept press enter to accept...

  • Page 30: Clear Stored Data (Only Available In Ab15+)

    4.1.11 Clear Stored Data (Only available in AB15+) This setup option allows you to clear all stored data sets (from previous measurements) in the meter’s memory for new data to be stored. Note old data sets will be overwritten by any new data sets in the event when the stored locations have exceeded.
  • Page 31 3. Press enter key to clear the memory. Press mode/ setup to exit to measurement. clear When enter key is pressed, meter displays the blinking “clear” icon. Once the clearing process is over, meter returns to measure screen.

  • Page 32: Standardization

    STANDARDIZATION STANDARDIZATION Standardization Procedure Because electrodes vary in their response, you must standardize or calibrate your pH meter and electrode to compensate for electrode variation. The more frequently you standardize or calibrate, the more accurate your measurements. Standardize at least daily, or more often, for accurate results.
  • Page 33 1. Press and release the mode key until your digital display indicates pH mode. This key toggles between pH, mV and Rel mV modes. 2. Press the setup key twice and then press enter key to clear an existing standardization. (See USING SETUP on Pg 9 if the calibration done)
  • Page 34 4. Press std to access the Standardize mode. The selected buffer group is displayed briefly. BUFFER select 5. Do wait for reading to stabilize. 6. Press std again to initiate standardization. The meter will automatically recognize the buffer. S tandardize and then meter returns to the Measure screen.
  • Page 35 7. Repeat steps 3-6 with a second and subsequent buffers. When the ATC probe is connected, the meter will continually adjust for temperature. Therefore the buffer values may vary slightly from the nominal values because of temperature variations. It is good to standardize your meter using at least 2 buffers. When the meter accepts the second buffer, it will briefly display the percent slope associated with the electrode’s performance prior to returning to the Measure mode.

  • Page 36: Ph Electrode Diagnosis Indicator

    pH Electrode Diagnosis Indicator There is an electrode diagnosis icon that indicates the condition of pH electrode being used. The STABLE icon will appear once the reading is stabilised. If the meter is calibrated with 2 or more points, then meter displays the electrode characteristic indicator bar with appropriate segments.

  • Page 37: Standardizing With Buffers From Different Buffer Sets

    Standardizing with buffers from different buffer sets You can standardize the meter or buffer values from different selected buffer groups. To standardize with buffers from different buffer sets 1. Press setup to select a buffer group that includes the desired buffer.
  • Page 38 Press setup to return to setup and select the next buffer group that contains the desired buffer(s). See page 14. 6 8 10 13 BUFFER select Press std key to standardize the meter with the selected buffer(s). see pages 29- 32. S tandardize Repeat steps 1-2 until standardization with all desired buffers is completed.

  • Page 39: Measurement

    MEASUREMENT Measurement Procedure Immerse the electrode (along with temperature probe if available for the measurement of pH) into the sample solution. Stir moderately. Make sure that the meter is in the Measure mode. When the meter senses that the reading has stabilized, the stable icon will appear under the reading.
  • Page 40 AB15 screen & display keys Stirring with a magnetic stir bar and stirrer provides faster electrode response. 3. The reading may be recorded at this time by saving into meter’s memory using save key.

  • Page 41: Mv Or Relative Mv Operation

    mV OR RELATIVE mV OPERATION Absolute mV Millivolts (mV) measurement is used primarily for measuring redox potential (also known as ORP, oxidation reduction potential). You will normally use a platinum ORP electrode, combined with a reference electrode, to measure redox potential (ORP) of a test sample. ORP measurements indicate the oxidizing or reducing capability of a solution.

  • Page 42: Relative Mv

    Relative mV The Relative mV mode helps you to standardize certain analytical and monitoring activities such as filtrations. Access the Relative mV mode by pressing mode until your meter displays screen shown below. Immerse the electrode in a sample solution. If you press std and mV on the screen will change to 0.0 mV reading .

  • Page 43: Temperature Calibration (Only Available In Ab15+)

    Temperature Calibration (Only available in AB15+) Access the temperature calibration mode by pressing mode key to go to the absolute mV measure screen Press std. This will take you to the temperature calibration (MTC or ATC) Press save/ or view/ to adjust the temperature.

  • Page 44: Memory (Only Available In Ab15+)

    MEMORY (Only available in AB15+) Store Value Into Memory In any Measure mode, press save/ ▲ key to store the displayed reading into the meter’s non-volatile memory. A memory location is shown momentarily and the meter returns to the Measure mode.

  • Page 45: Recall Value From Memory

    Recall Value From Memory In any Measure mode, pressing view/ ▼ key retrieves data from the meter’s memory on the Last-In-First-Out (LIFO) basis. The screen displays the last stored memory location. To view stored data in that particular memory location, press enter key. If you wish to view data at specific memory location, use save/ ▲...
  • Page 46 2. Pressing enter key repeatedly allows you to view data contents until a series of dashes appear on the display which indicates an empty data location. View Pressing mode key allows you to return to the Measure mode in any sequence of memory recall.

  • Page 47: Print Data (Only Available In Ab15+)

    PRINT DATA (Only available in AB15+) Printing Data Depending on the print option in the meter setup, pressing print key allows you to print either current displayed reading or stored data from meter to a PC or printing device via a RS232 communication cable.

  • Page 48: Ph Theory

    10 pH THEORY The measurement of pH plays an important role in quantifying and controlling acidity and alkalinity levels for industry and research. pH is a measure of the acidity or alkalinity of a solution and can be represented by this equation: pH= -log [H+] With [H+] representing the concentration of hydrogen ions in the solution.

  • Page 49: Measuring Ph

    10.1 Measuring pH To measure pH, the meter receives a millivolts signal from a glass bulb electrode that is sensitive to hydrogen ions. Therefore the potential developed at the glass bulb is directly related to the pH of the solution. The glass bulb electrode is paired with a reference electrode which completes the electrical measuring circuit and provides a stable reference point.

  • Page 50: Cleaning

    11 CLEANING This meter requires no regular maintenance, but it is recommended to occasionally wipe down the front with a damp cloth from time to time. 12 TROUBLE-SHOOTING Most troubles arise out of a problem with the electrode, not the meter. However, a meter check can be performed, and is simple to do.

  • Page 51: Meter Specifications

    13 METER SPECIFICATIONS Description AB15 AB15+ Display Custom LCD Screen Size 3” X 4.25” Measurement Display Height ¾” H Temp./ others display height 5/16” Keypad controls 5 keys 7 keys 100 Memory Memory Locations Internal Diagnostics pH Mode Range -1.99 to 19.99 -1.999 to 19.999 Resolution 0.1/ 0.01...

  • Page 52: Warranty

    14 WARRANTY The Fisher Scientific Company (“Fisher”) warrants to the direct purchaser that the Accumet meters and Accumet, AccuTupH, AccuFet, AccupHast, and Microprobe electrodes will be free from defects in material or workmanship for a specified warranty period. During that period, Fisher will repair or replace the product or provide credit, at its sole option, upon prompt notification and compliance with its instructions.

  • Page 53: Notice Of Compliance

    Warning! To meet or exceed FCC regulations and comply with CE requirements, the Fisher Scientific supplied power supply must be used. Use of a power supply that is not approved by Fisher Scientific may cause safety hazards and/or cause unit to exceed EMC limits and/or damage unit.

  • Page 54: Replacement Parts

    16 REPLACEMENT PARTS 16.1 Replacement parts Description Fisher Catalog Number Accumet 3 – in – 1 pH/ATC 13-620-530 combinaktion electrode, single junction, Ag/AgCl reference, polymer body, BNC connector AccuFlex electrode support arm 13-637-671 Electrode support bracket 13-637-671A Power Supplies: 115V, US plug 13-636-100 230V, UK plug 13-636-101...

  • Page 55: Ph Buffers And Solutions

    16.3 pH Buffers and Solutions Colour Ingredients Size Fisher Catalog Number 4.00 Potassium Biphthalate 500 ml SB101-500 7.00 Yellow Potassium Phosphate 500 ml SB107-500 Monobasic & Sodium Hyroxide 10.00 Blue Potassium Carbonate, 500 ml SB115-500 Potassium Borate & Potassium Hydroxide Fisher Buffer- Pac (500 ml ea.
  • Page 56 Electrochemical Questions? Call our Technical Specialists at 1-888-358-4706 Email:accumet@fishersci.com MODEL NUMBER_________________ SERIAL NUMBER__________________ PURCHASE DATE_________________ 68X295801 Rev.3 AUG 06...

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Accumet basic ab 15+

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