Bante210 Benchtop pH Meter Instruction Manual BANTE INSTRUMENTS LIMITED Technology to create the future... BANTE210 BENCHTOP PH METER 1 Introduction Thank you for selecting the Bante210 benchtop pH meter. This manual provides a step-by-step guide to help you operate the meter, please carefully read the following instructions before use. Unpacking the Meter The following list describes the standard accessories of the meter. After the unpacking, please check all accessories are complete. If any are damaged or missing, please contact nearest distributor. ACCESSORIES: ■ pH Electrode ■ Temperature Probe ■ pH Buffer Pouches (pH4.01, 7.00, 10.01) ■ Power Adapter Display The 210 benchtop meters is equipped with a clear and bright LCD display that used to show measured value and mode indicators. INDEX: Measurement mode indicator: Indicates meter is in the measurement mode Electrode slope indicator: Indicates the average slope of the pH electrode Calibration mode indicator: Indicates meter is in the calibration mode Hold indicator: Indicates the displayed value has been frozen Setup mode indicator: Indicates meter is in SETUP mode Automatic Temperature Compensation: Indicates meter is in the temperature compensation mode Keypad The meter includes 6 multifunction keys, names and symbols describe each function key controls. BANTE210 BENCHTOP PH METER 2 MEAS| ■ Power the meter ON/OFF. ■ Freezes the measured value on the display, press the key again to resume measuring. ■ In the calibration or temperature setting mode, exits current mode and returns to measurement. MODE ■ Toggles between pH and mV measurement modes. CAL| ■ Press the key to enter the pH calibration mode. ■ Press and hold the key to enter the setup menu. o C ■ Press the key to set the temperature or enter the temperature calibration mode. ■ Press the key to increase setting value. ■ Press the key to decrease setting value. ENTER ■ Confirms the calibration, setting value or displayed option. Connecting the Electrode Holder The meter comes with an easy-to-use holder for mounting the pH electrode and temperature probe. If necessary, follow the steps below to install the electrode holder. 1. The base of the electrode holder with an irregular round hole. 2. The electrode arm has a plastic rod. Plastic Rod BANTE210 BENCHTOP PH METER 3 3. Insert the plastic rod into the irregular round hole and swivel the electrode arm 90o. Electrode holder is now ready to swing into desired position. ADJUSTMENT OF ELECTRODE ARM: After installation, if the electrode arm automatically rises or falls, you need to adjust the screws until arm locate at any position. 1. Remove the plastic cover from the electrode arm. Screws 2. Use the screwdriver to tighten the screw moderately. 3. Insert the plastic cover to previous position. Installation is completed. Connectors The meter provides 4 connectors for connecting the various types of sensors. Listed in the below table are the details of these connectors. 1 2 pH/ISE REF 3 4 DO COND ATC Invalid connectors INDEX: CONNECTOR FUNCTION 1. pH/ISE For connecting the pH or ORP electrode 2. REF For connecting the reference electrode 3. ATC For connecting the temperature probe 4. For connecting the DC 9V power adapter BANTE210 BENCHTOP PH METER 4 Connecting the pH Electrode ■ Take out the pH electrode from the packaging. Follow the steps below to place the electrode into left or right sides of the electrode arm. A. Insert the electrode B. Hook up the cord C. Hook up the cord ■ Insert the BNC connector into corresponding connector socket. Rotate and push the connector clockwise until it locks. After connection is completed, DO NOT pull on the sensor cord. Always make sure that the connector is clean and dry. Connecting the Temperature Probe The meter comes with a temperature probe for measuring temperature of the sample solution. When temperature probe is connected to meter, Automatic Temperature Compensation function will immediately start. 1. Place the temperature probe into the circular hole of electrode arm. 2. Insert the connector of probe into the corresponding connector socket on the meter (marked “ATC). Ensure the connector is fully seated. BANTE210 BENCHTOP PH METER 5 Connecting the Power Adapter ■ ■ Before plugging in the power adapter, ensure the voltage of power adapter matches your local main voltage. Insert the connector of power adapter into the meter power socket. The meter is now ready for use. Preparation of pH Standard Buffer Solutions The 210 meter is packaged with three pH buffer packets required for calibration. Open the pH7.00 buffer packet, place the powder into a 250ml volumetric flask. Pour distilled water 250ml to scale line, mix the solution until reagent is completely dissolved. Preparation of pH4.01 and 10.01 standard buffer solutions are the same as above. Prepared standard buffer solutions should be stored in hermetically sealed glass containers. Prior to Use Remove the protective cap from the bottom of the electrode. If the glass sensitive membrane on the electrode dries out, soak the sensor in 3M KCL solution or tap water for at least 15 minutes. DO NOT use distilled or deionized water, it will shorten the life of sensor. Power On/Off ■ ■ ■ Press MEAS key to turn on the meter, the display shows measured value, mode indicator and help messages. Press and hold the MEAS key for 5 seconds, the meter will turn off. If you do not press any key for 3 hours, the meter will turn off automatically. To disable the auto-off function, please read the SETUP MENU section. BANTE210 BENCHTOP PH METER 6 Setup Menu The 210 meter contains an integrated setup menu that allows you to customize each displayed option to meet personal preference. PARAMETER DESCRIPTION pH Buffer OPTIONS DESCRIPTION DEFAULT USA Standard (pH4.01, 7.00, 10.01) ■ NIST Standard (pH4.01, 6.86, 9.18) 1 point Calibration Point 2 points ■ 3 points Temperature Unit Auto-Hold Auto-Off Reset Degrees Celsius (Default) ■ Degrees Fahrenheit Enable Disable ■ Enable Disable ■ Restores the parameters back to default settings Do not use this function ■ SETTING THE DEFAULT PARAMETERS: 1. Press and hold the key for 3 seconds to enter setup menu, the meter shows default pH buffer option. Setup Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode 2. If necessary, press or key select the USA or NIST standard, press ENTER key to confirm. The meter goes to calibration point selection mode, the display shows 2 points calibration. Setup Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode 3. Press or key to select the number of calibration points, press ENTER key to confirm. The meter goes to temperature unit selection mode, the display shows “UNIT/oC”. BANTE210 BENCHTOP PH METER 7 Setup Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode 4. Press or key to select the desired temperature unit (oC or oF), press ENTER key to confirm. The meter shows “HOLD/NO” indicating that the auto-hold function is disabled. Setup Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode If the auto-hold function is enabled, the meter will automatically sense a stable end-point reading and freeze it. If you disable this function, the meter allows you to freeze the reading by pressing the HOLD key. 5. Press or key to enable or disable the auto-hold function, press ENTER key to confirm. The meter shows “OFF/NO” indicating that the auto-off function is disabled. ■ ■ Setup Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode When the auto-off function is enabled, if you do not press any keys within 3 hours, the meter will automatically turn off to conserve energy. 6. Press or key to enable or disable the auto-off function, press ENTER key to confirm. The meter shows “RST/NO” indicating that the meter should not be reset. Setup Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode Reset function will restore the meter back to factory default parameters, all calibration values and selected parameters will be reset. 7. Press or key to enable or disable the reset function, press ENTER key to confirm. The meter returns to measurement mode. Settings is completed. BANTE210 BENCHTOP PH METER 8 Temperature Compensation In order to get accurate measuring results, you need to enable the manual or automatic temperature compensation before measurement or calibration. AUTOMATIC TEMPERATURE COMPENSATION: Insert the connector of temperature probe into corresponding “ATC” socket, the display immediately shows “ATC” indicator. The meter is now switched to automatic temperature compensation mode. Measure pH o C ATC ATC Press MEAS key to freeze or release the measured value MANUAL TEMPERATURE COMPENSATION: 1. Do not connect the temperature probe to meter. 2. Press oC key to enter the temperature setting mode. 3. Press or key to set the temperature value of sample. 4. Press ENTER key to confirm. Setting is completed. In the temperature setting mode, press or key once, the setting value will increase or decrease by 0.1. Press and hold the or key, the setting value will increase or decrease by 1. BANTE210 BENCHTOP PH METER 9 pH Calibration During the pH mode, the meter allows up to 3 points calibration. We recommend that you perform at least 2 points calibration for high accuracy measurement. The meter will automatically recognise and calibrate to following standard buffer values. ■ USA Standard Options: pH4.01, 7.00, 10.01 ■ NIST Standard Options: pH4.01, 6.86, 9.18 Single point calibration should only be carried out with pH7.00 or pH6.86, otherwise calibration will not be accepted. The meter must be calibrated prior to first use or new electrode replaced. To ensure accuracy, regular calibration is recommended. Do not reuse calibration solution after calibration, contaminants in solution will affect the calibration and eventually the accuracy of the measurement. SINGLE POINT CALIBRATION: 1.1 Make sure that you have selected 1 point calibration in the setup menu. 1.2 Rinse the pH electrode with distilled water. 1.3 Press CAL key, the meter shows “CAL1/pH7.00”(or “CAL1/pH6.86”). Calibration pH Immerse the sensor in the calibration solution Press ENTER key to confirm or MEAS key to return to measurement mode 1.4 1.5 Dip the electrode into the pH7.00 (or pH6.86) standard buffer solution, stir the electrode gently. Press ENTER key to confirm. Wait for the measured value to stabilize, the display will show “END”. Single point calibration is completed. Calibration 2 POINTS CALIBRATION: 2.1 Make sure that you have selected 2 points calibration in the setup menu. 2.2 Repeat steps 1.2 to 1.5 above. When the first calibration point is done, the display will show “CAL2”. The meter prompts you to continue with second point calibration. Calibration Immerse the sensor in the calibration solution Press ENTER key to confirm or MEAS key to return to measurement mode BANTE210 BENCHTOP PH METER 2.3 2.4 10 Rinse the pH electrode with distilled water, dip the electrode into the pH4.01 or 10.01 (pH4.01 or 9.18) standard buffer solution, stir the electrode gently. Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “END”. Second point calibration is completed. Calibration Calibration pH o C ATC % 3 POINTS CALIBRATION: 3.1 Make sure that you have selected 3 points calibration in the setup menu. 3.2 Repeat steps 1.2 to 1.5 above. When the first calibration point is done, the display will show “CAL2/pH4.01”. The meter prompts you to continue with second point calibration. 3.3 3.4 Rinse the pH electrode with distilled water, dip the electrode into the pH4.01 standard buffer solution, stir the electrode gently. Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “CAL3/pH10.01” (or “CAL3/pH9.18”). 3.5 Rinse the pH electrode with distilled water, dip the electrode into the pH10.01 (or pH9.18) standard buffer solution, stir the electrode gently. Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “END”. The meter automatically returns to measurement mode. Calibration is completed. 3.6 BANTE210 BENCHTOP PH METER ■ ■ ■ 11 During the calibration, if the meter shows “Err”, please check your sensor and calibration solution is fresh and uncontaminated. If you want to exit from calibration mode, press MEAS key, the meter will immediately return to measurement mode. The electrode indicator will show average slope of the pH electrode after calibration. If the slope or calibration result does not meet measurement requirement, the indicator will disappear on the display. Temperature Calibration During the measurement mode, when automatic temperature compensation is enabled, if the temperature reading displayed differs from that of an accurate thermometer, you need to calibrate the meter. 1. Make sure the connecter of temperature probe is connected to the meter. 2. Press oC key to enter the temperature calibration mode, the display shows current temperature reading. Setup o C ATC Press or key to select the option or value Press ENTER key to confirm or MEAS key to return to measurement mode 3. Press or key to set the temperature value of sample. 4. Press ENTER key to confirm. Calibration is completed. Measurement Rinse the pH electrode with distilled water, dip the electrode into the sample solution, stir the sensor gently. Wait for the reading to stabilize, record the measured value on the display. Hold Function The 210 meter contains two data hold modes. When the Auto-Hold function is enabled, the meter will automatically sense a stable endpoint measured value and freeze it, “HOLD” indicator will appear on the display. If the Auto-Hold function is disabled, press key, the meter will immediately freeze currently displayed value. Press the key again to release the measured reading, you can continue to take measurement. Measure pH o C ATC Press MEAS key to freeze or release the measured value BANTE210 BENCHTOP PH METER 12 Electrode Care and Maintenance Since pH electrode is susceptible to dirt and contamination, clean as necessary depending on the extent and condition of use. AFTER MEASURING: Rinse the pH electrode in distilled water, store the sensor into the electrode storage solution. CLEANING THE ELECTRODE: Salt deposits: Dissolved the deposits by immersing the electrode in the tap water for 10 to 15 minutes, then thoroughly rinse with distilled water. Oil or Grease film: Wash electrode pH bulb gently in some detergent and water, rinse electrode tip with distilled water. Clogged reference junction: Heat a diluted KCl solution to 60 to 80oC, place the sensing part of the sensor into the heated solution for about 10 minutes, allow the electrode to cool in some unheated KCl solution. Protein deposits: Prepare a 1% pepsin solution in 0.1M of HCL, set the electrode in the solution for 5 to 10 minutes, rinse the electrode with distilled water. HOW TO PREPARE THE ELECTRODE STORAGE SOLUTION: ■ Dissolve 22.36 grams of potassium chloride reagent (KCL) in 100mL distilled water. ■ Stir the solution until the solution has thoroughly mixed. Optional pH Electrodes The 210 benchtop meter is equipped with a general purpose pH electrode, if it can not fully meet your measurement requirements, please refer to the table below to select an applicable sensor. ORDER CODE APPLICATION P11 General purpose pH electrode P12 For the sample in the test tube P13 Micro-volume samples P15 Low conductivity liquids P16 Tris buffers P17 Semisolid samples (Flat surface pH electrode) P18 Slurries P19 Semi-solid substances, e.g. meat, cheese, etc. P21 Colloids P22 High temperature liquids BANTE210 BENCHTOP PH METER 13 Troubleshooting LCD DISPLAY CAUSE CORRECTIVE ACTION Electrode dried out Soak the pH electrode in 3M KCL solution for 10 minutes Measured value is out of range Check the electrode whether clogged, dirty or broken Incorrect pH buffer solutions Use fresh pH buffer solutions for calibration Electrode is broken Replace the pH electrode Model Bante210 Range -1.00~15.00pH Accuracy ±0.01pH Calibration Points 1 to 3 points Calibration Solutions USA (pH4.01/7.00/10.01) or NIST (pH4.01/6.86/9.18) Range -1000~1000mV Accuracy ±1mV Resolution 1mV Range 0~105°C, 32~221°F Accuracy ±1°C Resolution 0.1°C Calibration Points 1 points Calibration Range Measured value ±10°C Temperature Compensation 0~100°C, 32~212°F, Manual or Automatic Hold Function Manual or Automatic Power Off Manual or Automatic (180 minutes after last key pressed) Connector BNC Display LCD (135× 75mm) Power Requirements DC9V, using AC adapters, 220VAC/50Hz Dimensions 210(L)× 205(W)× 75(H)mm Weight 1.5kg Specifications pH mV Temperature Others Hazardous Substance Statement Bante Instruments is committed to the reduction and eventual elimination of all hazardous substances in both the manufacturing process and finished products we supply. We have an active manufacturing and procurement program to minimize and eliminate the use of harmful heavy metals such as cadmium, lead, mercury and the like. New technologies and design parameters are also promoting these efforts and we expect to have little or no such materials in our product in the coming years. We welcome our customer suggestions on how to speed up these efforts. Warranty The warranty period for meter is one year from the date of shipment. Above warranty does not cover sensor and calibration solutions. For more information, please contact nearest authorized distributor. BANTE INSTRUMENTS LIMITED E-mail: email@example.com Phone: +8621-6404-1598 Website: www.bante-china.com The information in this document is subject to change without notice. Copyright © Bante Instruments Limited, 2015. All rights reserved.