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Summary of Contents for OHAUS a-AB33M1
- Page 1 Multi-parameter Analyzer a-AB33M1 Bench PH Meter a-AB33PH a-AB41PH Bench Conductivity Meter a-AB33EC Instruction Manual GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 2: Table Of Contents
ALONE ELECTRODE HOLDER ..................9 NSTALLING THE POWER ADAPTER ..............10 ONNECT THE P AND CONDUCTIVITY ELECTRODES PH OPERATION (A-AB33M1, A-AB33PH AND A-AB41PH) ........... 11 ........................11 SETUP 3.1.1 Set temperature unit and temperature .............. 11 3.1.2 Select a predefined buffer group ................ 11 3.1.3... - Page 3 EN-2 Analyzer and Bench Meter ........................23 ETUP MENU ......................26 TEWARD MENU ......................30 ETTINGS MENU PRINTING ........................33 ....................... 33 RINT FORMAT ......................36 UTPUT FORMAT COMMANDS ......................36 MAINTENANCE ......................37 11.1 ......................37 RROR MESSAGE 11.2 ......................
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Page 4: Introduction
Analyzer and Bench Meter EN-3 1. Introduction This manual contains installation, operation and maintenance instructions for a-AB33M1 multi-parameter analyzer, a-AB33PH, a-AB41PH and a-AB33EC pH and conductivity bench meter. Please read it completely before installation and operation. The table below lists the measurement modes each model supports:... -
Page 5: Intended Use
It must only be used for measuring the parameters described in these operating instructions. Any other type of use and operation beyond the limits of technical specifications, without written consent from OHAUS, is considered as not intended. This instrument complies with current industry standards and the recognized safety regulations;... -
Page 6: Touch Screen
Measurement icon: blinks when measurement is in progress. Pinter icon: touch to print. Calibration icon: touch to calibrate; blinks when calibration is in progress. Menu icon: touch to enter menu settings. PH electrode condition (a-AB33M1, a-AB33PH and a-AB41PH) Slope: 95-105% Slope: 90-95% Slope: less than 90% and offset: ±... - Page 7 Electrode condition is good. Electrode needs cleaning. 10. First measurement channel (a-AB33M1) Note: a-AB33M1 supports dual channel measurement, other models only support one measurement channel. 11. Temperature: touch to switch between MTC and ATC temperature. 12. Measurement mode area: touch to switch between different pH and conductivity measurement modes.
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Page 8: Buttons
Analyzer and Bench Meter EN-7 1.4. Buttons Up Button: When setting parameters, press to increase the setting value or to display the previous option. When in setup menu, press to scroll up to the previous page of menu selections. When in calibration and PH electrode check system (PH ECS), press to repeat the previous step. -
Page 9: Installation
EN-8 Analyzer and Bench Meter 2. Installation Install the stand-alone electrode holder Attach the magnetic part on the bottom of the meter to the magnetic part on the stand-alone electrode holder to finish installation. (Both marked in red demonstrated below.) The two tension knobs can be adjusted by turning clockwise to tighten or turning counterclockwise to loosen. -
Page 10: Installing The Power Adapter
Analyzer and Bench Meter EN-9 Note: the stand-alone holder boasts a harness storage design. You can push the electrode's cable in the slots marked in red below, roll up and fix the harness storage strip located at the bottom of the holder, and pass the cable through the strip. -
Page 11: Connect The P Hand Conductivity Electrodes
There are two sockets for pH electrode, the “pH/mV” socket and the “Temp” Socket. One socket for conductivity electrode, the "COND" socket. COND pH/mV RS232 Temp Figure 2-2 a-AB33M1 sockets a-AB33PH / a-AB41PH There are two sockets for pH electrode, the “pH/mV” socket and the “Temp” Socket. pH/mV RS232 DC... -
Page 12: Ph Operation (A-Ab33M1, A-Ab33Ph And A-Ab41Ph)
Touch Setup. Press the button if you are using an a-AB33M1 model. Skip this step if you are using an a-AB33PH or a-AB41PH model. Touch Temperature. Touch Temp.unit and then touch ° C or ° F to select temperature unit. -
Page 13: Select A Ph Resolution
PH calibration a-AB41PH model supports a maximum 5-point calibration, while a-AB33PH and a- AB33M1 models support 3-point calibration. OHAUS recommends to perform at least 2- point calibration. Standard procedure of pH measurement is as follows: pH electrode preparation... -
Page 14: Perform 1-Point Calibration
Touch the mode area one or several times to select pH. Touch the icon on the screen. Touch pH if you are using an a-AB33M1 model. Skip this step if you are using other models. Follow the instruction on the screen to rinse the electrode, place it in a calibration buffer, stir 5 seconds, and wait for 30 seconds. -
Page 15: Perform 3-Point Calibration
Touch the mode area one or several times to select ORP. Touch the icon on the screen. Touch ORP if you are using an a-AB33M1 model. Skip this step if you are using other models. Follow the instruction on the screen to rinse the electrode, place it in a standard solution, stir 5 seconds, and wait for 30 seconds. -
Page 16: Ph Measurement
Analyzer and Bench Meter EN-15 PH measurement 3.3.1 Measurement modes 3.3.1.1 Auto or Continuous End Point Mode To switch between the two modes: Touch the Menu icon to enter menu option. Touch Setup, and then touch Mode. Touch Read type. Touch Auto-Stop or Continuous to confirm your setting. -
Page 17: Ph Measurement
MTC appears. MTC temperature should be set. Note: a-AB33PH and a-AB33M1 model support to use MTC mode even if a temperature electrode is used. If MTC mode is selected, it will continue to display MTC. -
Page 18: Conductivity Operation (A-Ab33M1 And A-Ab33Ec)
Analyzer and Bench Meter EN-17 4. Conductivity Operation (a-AB33M1 and a- AB33EC) This chapter is for a-AB33M1 and a-AB33EC models which support conductivity measurement. Conductivity setup 4.1.1 Set cell K value The cell K value is usually recorded in the factory inspection report or marked on the electrode cable. -
Page 19: Set Temperature Coefficient
Touch the mode area one or several times to select EC. Touch the icon on the screen. Touch COND if you are using an a-AB33M1 model. Skip this step if you are using other models. Follow the instruction on the screen to rinse the electrode, place it in a standard solution, stir 5 seconds, and wait for 30 seconds. -
Page 20: Conductivity Measurement
Analyzer and Bench Meter EN-19 Touch Recalibration if you want to re-calibrate and repeat the previous steps. Note: Press the button to exit calibration and return to measurement screen. Touch the icon to print the result if you connect the meter to a printer or a computer. -
Page 21: Dual Channel Measurement (A-Ab33M1)
EN-20 Analyzer and Bench Meter 5. Dual channel measurement (a-AB33M1) a-AB33M1 model supports dual channel measurement. This mode helps users to perform pH and conductivity measurement at the same time and view both measurement results simultaneously through a split display. -
Page 22: User Management
User management helps to manage measurement results and parameter settings by different users. The meter/analyzer provides 10 users. User ID 0 refers to the admin account. User management cannot be accessed during measurement. User management (a-AB33M1, a-AM33PH and a- AB33EC) To switch between different users: Touch on the screen. -
Page 23: Change Password
EN-22 Analyzer and Bench Meter 6.2.2 Change password Touch on the screen. Press the button to select between different user IDs. Touch when you see the ID number you want to change password for. Enter the old password. If the old password is correct, the meter will require you to enter a new password. -
Page 24: Menu
(a-AB33M1, a-AB33PH, Buffer group USA, JJG, DIN, EU, Merck a-AB41PH) 0.01~10.0 (the default is 0.1 (a-AB33EC) Cell K and 1.75 (a-AB33M1)) Setup 10 μS/cm, 84 μS/cm (a-AB33EC), 146.5 Conductivity Std.Solution μS/cm, 500 μS/cm, 1413 μS/cm (a- (a-AB33M1, AB33M1) and 12.88 mS/cm. - Page 25 Enable or disable average. = the meter/analyzer calculates the average automatically. This Auto Smart selection helps to reach measurement stability faster. = disabled. PH (a-AB33M1, a-AB33PH, a-AB41PH) Resolution 0.01 0.001 (a-AB41PH ) Note: please refer to Select a pH resolution section for details.
- Page 26 Note: please refer to Select a predefined buffer group section for details. Conductivity (a-AB33M1, a-AB33EC) Cell K 0.01~10.0 The default value is 0.1 for a-AB33EC model and 1.75 for a-AB33M1 model. The cell K value of the compatible conductivity electrode AquaSeareacher series is as follows: Series...
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Page 27: I-Steward Menu
EN-26 Analyzer and Bench Meter Enter temperature value (Enter temp.value) 5.0~60.0℃ (41.0~140℉) (the default is 25.0℃/77.0℉) Note: please refer to Set temperature unit and temperature for details of the temperature setting. Temperature calibration ( Temp.cal) Enter this menu to set calibration temperature if the temperature measured by your electrode is incorrect or you change to a different temperature probe to use. - Page 28 Take out the optional ECS tester connector, and remove the cover of the BNC shorting cap on the connector. Note: you can contact an authorized OHAUS dealer to purchase the ECS tester connector. Connect the ECS tester to the meter/analyzer's pH/mV socket as demonstrated in the following graphic.
- Page 29 Touch i-Steward, and then touch Self-Test. Disconnect electrodes and attach the included BNC shorting cap to the meter/analyzer's pH/mV socket if you use an a-AB33M1, a-AB33PH or a-AB41PH model. Press the button when you finish to continue. Skip this step if you use other models.
- Page 30 Analyzer and Bench Meter EN-29 If you press the button in the previous step, wait for the display to show the finish of the process. After that, press the button or the button to return to the setup menu. Note: This function is only available for a-AB41PH. Reset (a-AB41PH) This feature is only visible to the administrator (user ID 0).
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Page 31: Settings Menu
EN-30 Analyzer and Bench Meter Settings menu Enter this menu to set the meter/analyzer's settings. The default settings are in bold. Table 8-4 Settings menu Menu Sub-Menu Options English, Espanol, Francais, 中文, Türkçe, Language русск, Portuguese Export to PC, Printer 38400, 19200, 9600, Baud Rate 4800, 2400, 1200... - Page 32 Analyzer and Bench Meter EN-31 7 EVEN = 7 data bits, even parity 7 ODD = 7 data bits, odd parity 7 NONE = 7 data bits, no parity 8 NONE = 8 data bits, no parity Stop bit Set the number of stop bits. = 1 stop bits 1 bit 2 bit...
- Page 33 EN-32 Analyzer and Bench Meter Auto Shut Off Enter this menu to set up automatic shutdown time. The meter/analyzer will shut down if no operation during the time period you set. = disabled = the meter/analyzer will shut down after 15 minutes of no operation.
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Page 34: Printing
Analyzer and Bench Meter EN-33 9. Printing Print format Note: In the following tables, number and item columns are only for illustration to explain the printing content and will not be printed out in the final result. Table 9-1 PH calibration Number Item Printing Content... - Page 35 EN-34 Analyzer and Bench Meter Table 9-3 Conductivity calibration Number Item Printing Content Meter Model AB33PH/AB33M1/AB41PH Serial Number XXXXXXXXXX Software Revision X.XX Channel Cond Mode Cond Date & Time 2020/9/25 14:34 Conductivity Value XX.X Conductivity Unit uS/cm Conductance Value XX.X Conductance Unit Temperature Value XX.X...
- Page 36 Analyzer and Bench Meter EN-35 Table 9-5 ORP measurement Number Item Printing Content Meter Model AB33PH/AB33M1/AB41PH Serial Number XXXXXXXXXX Software Revision X.XX User ID Date & Time 2020/9/25 14:34 Sample ID 000~999 Channel Mode ORP Value XXX.X ORP Unit Offset mV Value XXX.X Offset mV Unit Temperature Value...
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Page 37: Output Format
EN-36 Analyzer and Bench Meter Note: When printing out dual channel measurement result, conductivity results will be printed after pH results and they will be shown in the same line. In continuous mode, "Continuous" will be used for Sample ID. Output format When printed through a printer, the rows of the printing result will be separated and shown as follows:... -
Page 38: Maintenance
Analyzer and Bench Meter EN-37 11. Maintenance 11.1 Error message a-AB33PH, a-AB41PH and a-AB33M1 models: Table 11-1 Error message Error Code Possible Cause Possible Solution Measured buffer Keep the pH buffer temperature within Error 3 temperature out of range the range for calibration. -
Page 39: Meter Maintenance
EN-38 Analyzer and Bench Meter 11.2 Meter maintenance Never unscrew the two halves of the housing! The meter does not require any maintenance other than occasional wipe with a damp cloth and the replacement of depleted batteries. The housing is made of acrylonitrile butadiene styrene (ABS). This material does not hold up well to some organic solvents such as toluene, xylene and methyl ethyl ketone (MEK). -
Page 40: Cleaning
Analyzer and Bench Meter EN-39 11.4 Cleaning WARNING: Electric Shock Hazard. Disconnect the equipment from the power supply before cleaning. Make sure that no liquid enters the interior of the instrument. Attention: Do not use solvents, harsh chemicals, ammonia or abrasive cleaning agents. - Page 41 EN-40 Analyzer and Bench Meter Table 12-1 Specification 1 Benchtop Model a-AB33M1, a-AB33PH, a-AB33EC a-AB41PH Display Type 6.5" Segment & Dot matrix LCD with backlight Multilanguage User English, Spanish, French, Portuguese, Chinese, Interface Russian and Turkish Measurement Channels 1 to 2...
- Page 42 Analyzer and Bench Meter EN-41 Table 12-2 Specification 2 pH Meter Model a-AB33PH a-AB41PH Measurement Channels pH/mV/ORP with temperature Measuring Range -2.00 to 16.00 pH -2.000 to 20.000 pH Resolution 0.1/0.01 pH 0.1/0.01/0.001 pH Resolution Switch Accuracy ± 0.01 pH ±...
- Page 43 EN-42 Analyzer and Bench Meter Table 12-3 Specification 3 Conductivity Meter Model a-AB33EC Conductivity/TDS/Salinity/Resistivity with Measurement Channels temperature 0.01 μS/cm to 19.99 μS/cm 20 μS/cm to 199.9 μS/cm Measuring Range 200 μS/cm to 1999 μS/cm 2.00 mS/cm to 19.99 mS/cm 20.0 mS/cm to 199.9 mS/cm Resolution 0.01 μS/cm minimum;...
- Page 44 Analyzer and Bench Meter EN-43 Table 12-4 Specification 4 pH and Conductivity Analyzer Model a-AB33M1 pH/mV/ORP/Conductivity/TDS/ Measurement Channels Salinity/Resistivity with temperature Measuring Range -2.00 to 20.00 pH Resolution 0.01 pH Resolution Switch Accuracy ± 0.01 pH Pre-Defined Buffer Groups Measuring Range ±...
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Page 45: Dimensions
EN-44 Analyzer and Bench Meter 12.2 Dimensions 51 mm 210 mm Figure 12-5 Dimensions GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 46: Appendix
Analyzer and Bench Meter EN-45 13. Appendix 13.1 PH buffer groups The meter/analyzer automatically corrects for the temperature dependence of the buffer group of the pH value given in the following tables. Table 13-1 Buffer group: USA standard Temp ° C pH1.68 pH4.01 pH7.00... -
Page 47: Conductivity Standards
EN-46 Analyzer and Bench Meter Table 13-3 Buffer group: MERCK (Ref. 20°C) Temp ° C pH2.00 pH4.00 pH7.00 pH9.00 pH12.00 2.01 4.04 7.07 9.16 12.41 2.01 4.02 7.05 9.11 12.26 4.01 7.02 9.05 12.1 4.01 6.98 8.95 11.88 4.01 6.98 8.91 11.72 4.01... -
Page 48: Examples Of Temperature Coefficients (Α-Value)
Analyzer and Bench Meter EN-47 13.3 Examples of temperature coefficients (α-value) Table 13-6 Temperature coefficient examples Substance at 25 °C Concentration [%] Temperature coefficient α [%/°C] 1.56 1.88 CH3COOH 1.69 NaCl 2.14 H2SO4 1.28 α-coefficients of conductivity standards for a calculation to a reference temperature of 25°C Table 13-7 α-coefficients of conductivity standards Standard... -
Page 49: Compliance
EN-48 Analyzer and Bench Meter 14. Compliance Compliance to the following standards is indicated by the corresponding mark on the product. Mark Standard This product complies with the applicable harmonized standards of EU Directives 2011/65/EU (RoHS), 2014/30/EU (EMC), 2014/35/EU (LVD). The EU Declaration of Conformity is available online at This product complies with the EU Directive 2012/19/EU (WEEE). - Page 50 EN-49 FCC Supplier Declaration of Conformity Unintentional Radiator per 47CFR Part B Trade Name: OHAUS CORPORATION Model or Family identification: Aquasercher a-AB FCC Compliance Statement: Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules.
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