Bante-220 Portable pH Meter User Manual

Bante-220 Portable pH Meter

Introduction

Thank you for selecting the 210 benchtop pH meter. This user manual provides a step-by-step guide to help you operate the meter, please carefully read the following instructions before use. Any use outside of these instructions may invalidate your warranty and cause permanent damage to the meter.

Environmental Conditions

Before unpacking, ensure that current environmental conditions meet the following requirements.

• The relative humidity is less than 80%
• Ambient temperature between 0° C (32° F) and 50° C (122° F)
• No potential electromagnetic interference
• No corrosive gas exists

Packing List

The following list describes all components of the meter. If any items are missing or damaged, contact the supplier immediately.

1. 220 meter
2. Electrode clip
3. pH buffer solutions
4. pH electrode
5. Temperature probe

Meter Overview **

**

1. Sensor connections
2. Slot for electrode clip
3. Display
4. Membrane keypad
5. Slot for hand strap
6. Battery compartment
7. Socket for pH or ORP electrode (BNC)
8. Socket for temperature probe (3.5 mm jack)
9. USB-A interface to the computer or power adapter

Display

Keypad

1.  Switch the meter on or off
2. Lock or unlock the measurement
3. Exit the calibration, settings and return to the measurement mode
4. Toggle between the pH and mV measurement modes
5. Start calibration
6. Press and hold the key to enter the setup menu
7. Set the temperature
8. Increase value or scroll up through a list of options
9. Decrease value or scroll down through a list of options
10. Confirm the calibration or displayed option

Installing the Batteries

1. Remove the battery compartment cover from the backside of the meter, insert three AA batteries into the battery compartment, note polarity.
2. Replace the battery compartment cover to its original position, push the limiter until it locks.
   The meter allows using the 5V DC power adapter (order code: DCPA-5V) or the USB port on the computer as a power supply.

Note, take out the batteries before connecting an external power supply.

Installing the Electrode Clip

The electrode clip is designed for mounting a sensor, but it is not a necessary component for the meter. If you want to install this accessory, insert the electrode clip into the slot on the right of the meter.

Switching the Meter On and Off

• Press the Meas key and release to switch on the meter.
• Press and hold the Meas key to switch off the meter.

Setting a Default Option

1. In the measurement mode, press and hold the setup menu.
2.  Press the  /  key to select a menu item.
3.  Press the Enter key, the meter shows the current option.
4.  Press the  /  key to select the desired option.
5.  Press the Enter key to save and return to the measurement mode.
6. To exit the setup menu without saving changes, press the Meas key.

Connecting the Electrode

1.  Take out the pH electrode from the carrying case. Insert the BNC connector into the connector socket on the meter, rotate and push the connector clockwise until it locks.
2. Remove the protective cap from the bottom of the electrode. If tiny air bubbles are present inside the pH-sensitive glass membrane, gently shake the electrode downward to remove air bubbles.

Temperature Compensation

For better accuracy, we recommend the use of either a sensor with a built-in or a separate temperature probe. The meter will calculate the pH slope with measured temperature and show the temperature compensated readings. Automatic Temperature Compensation Connect the temperature probe to meter (refer to figure 1). The ATC icon immediately appears on the display, the meter is now switched to the automatic temperature compensation mode. Manual Temperature Compensation If the meter does not detect a temperature probe, the degrees Celsius icon (°C) will show on the display indicating the meter is switched to the manual temperature compensation mode. To set the temperature value follow the steps below.

1.  Press and hold the °C key to enter the temperature setting.
2.  Press the  /  key to modify the temperature value.
3.  Press the Enter key to save.

Manual Temperature Compensation
If the meter does not detect a temperature probe, the degrees Celsius icon (°C) will show on the display indicating the meter is switched to the manual temperature compensation mode. To set the temperature value follow the steps below.

1. Press and hold the °C key to enter the temperature setting.
2.  Press the  /  key to modify the temperature value.
3.  Press the Enter key to save.

Meter Setup

The 210 meter contains an integrated setup menu for customizing the displayed option to meet measurement requirements. The following table describes the functions of each menu item.

1. pH Buffer Group Set the pH buffer group for calibration and auto-recognition.
2. USA (default)
3. NIST
4. Calibration Points Set the number of calibration points.
5.  point
6. points (default)
7. points
8. Measurement Unit Set the default temperature unit.
9. Degrees Celsius (default)
10. Degrees Fahrenheit
11. Auto-Hold If enabled, the meter will automatically sense and lock the measurement endpoint.
12. Enable
13. Disable (default)
14. Auto-Power Off If enabled, the meter will automatically switch off if no key is pressed within 3 hours.
15. Enable
16. Disable (default)
17. Factory Reset Reset the meter to factory default settings. Note, the meter must be recalibrated.
18. Enable
19. Disable (default)

Temperature Calibration
The 220 meters is supplied with a temperature probe for measurement and temperature compensation. If the measured temperature reading differs from that of an accurate thermometer, the probe needs to be calibrated.

1. Make sure that the temperature probe is connected to the meter and place it into a solution with a known accurate temperature.
2. Wait for the measurement to stabilize.
3. Refer to the Manual Temperature Compensation section, repeat steps 1 through 3.

pH Calibration
The 210 meter allows up to 3 points of pH calibration. We recommend that you perform at least 2 points of calibration for high accuracy measurement. The meter will automatically recognize and calibrate to the following standard buffer values.

• USA Standard Buffers    pH 4.01, 7.00, 10.01
• NIST Standard Buffers      pH 4.01, 6.86, 9.18

Single point calibration should only be carried out with a pH of 7.00 or 6.86, otherwise, calibration will not be accepted. Make sure to calibrate the meter when attaching a new pH electrode or during first use. Do not reuse the buffer solutions after calibration, contaminants in the solution will affect the calibration and eventually the accuracy of the measurement. Stir the pH buffer and sample solutions at a uniform rate that will be obtained the most accurate readings.

Single Point Calibration

1. Ensure that the meter is in the pH measurement mode and you have selected 1 point calibration in the setup menu.
2. Press the Cal key, the meter shows 7.00/CAL 1 or 6.86/CAL 1, depending on the selected pH buffer group.
3. Rinse the pH electrode with distilled water, place the electrode (and temperature probe) into the pH 7.00 buffer solution, stir gently to create a homogeneous solution.
4.  Press the Enter key, the Calibration icon begins flashing.
5.  When the reading has stabilized, the meter will show and  return to the measurement mode.

Multipoint Calibration

1. Ensure that you have selected 2 or 3 points calibration in the setup menu.
2.  Repeat steps 1.2 through 1.4 above. When the first calibration point is completed, the display will show —-/CAL 2. The meter prompts you to continue with second point calibration.
3. Rinse the pH electrode with distilled water, place the electrode (and temperature probe) into the next buffer solution (e.g., pH 4.01).  The meter will automatically recognize the buffer solution and begin the calibration, the Calibration icon continuously flashing.
4.  When the reading has stabilized, the display will show —-/CAL3.
5. The meter prompts you to continue with third point calibration.
6.  Repeat step 2.3 above until the meter shows .

Viewing the Calibration Log

1.  Press the MR key in the measurement mode and press the  key until the meter shows ELE / P-2 (Electrode / Page 2). 
2.  Press the Enter key, the meter shows the zero-point offset.
3.  Press the  key to view calibration point 1
4. Press the  key to view the calibration point 2.
5.  Press the  key to view the electrode slope.
6.  To exit the calibration log, press the Meas key.
   If the meter is not calibrated, the display will show —- only.

Measurement

pH Measurement

1. Rinse the pH electrode with distilled water. Place the electrode (and temperature probe) into the sample solution and stir gently. Note, the pH-sensitive glass membrane and liquid junction must be completely immersed into the solution.
2.  If the Auto-Hold option in the setup menu is enabled, the meter will automatically sense a stable reading and lock measurement, the icon appears on the display. Press the Meas key to resume measuring. If the option is disabled, the meter will continuously measure and update the readings.
3.  Wait for the measurement to stabilize and record the reading.
4.  When all of the samples have been measured, rinse the electrode according to the instructions in the Electrode Maintenance.

• During the measurement process, never wipe the pH-sensitive membrane as this will cause static interference, blot dry with a lint-free tissue to remove waterdrops on the electrode.
• If the meter shows —- indicating the measurement exceeds the range, remove the electrode from the sample immediately.
• If your sample is pure water, low ionic or low conductivity water, we recommend measuring the pH in the smallest sample volume possible or adding 0.3 ml of the 3M KCl to 100 ml of the sample solution. Note, only high purity KCl can be used.

mV Measurement

1. Press the Mode key to switch the meter to mV mode.
2. Rinse the electrode with distilled water. Place the electrode into the sample solution and stir gently. Record the reading when the measurement is stable.

Data Management

The 220 meter is capable of storing and recalling up to 100 data sets.
Storing a Measurement Result
In the measurement process, press the MI key to store the reading into the memory, the Memory icon appears on the display.

1. Viewing the Data Logs Press the MR key in the measurement mode, the meter shows  / (Log / Page 1).
2. Press the Enter key, the meter shows the serial number of the stored data.
3.  Press the  key to view the stored data.
4.  Press the  key to view the next data set.
5. To exit the data log, press the Meas key.

If the meter does not store any reading, the display will show —- only.
Clearing the Data Logs
If the memory is full, the meter will automatically show when the MI key is pressed. To delete the data logs, please follow the steps below.

1.  Press and hold the key to enter the setup menu.
2.  Press the  key until the meter shows
3. 2.3 Press the Enter key, the meter shows
4. 2.4 Press the  key to select the
5. 2.5 Press the Enter key to confirm.

Communication

The 220 meter can transfer the data to a computer or import the data to Excel by DAS software. You are able t

o download this software from our official website.
Before installation, make sure that the Windows 10 operating system has been installed on your computer and you have a USB-B2303 data cable.

Receiving the Data

1.  Connect the black port of the data cable to the meter and the blue port to the computer.
2.  Click the DAS ECO Series icon, the system automatically scans an available communication port and shows a message box “Found a port on your computer”.
3.  Click the OK, the application starts.
4.  Click the Connect, the screen shows “Port is connected”.
5. Click the OK, then click the Receive, the stored data will transfer to the computer automatically.

If your computer can not find a communication port, click the “PL2303 _Prolific_DriverInstaller_v1190.exe” to update the drive program. Creating an Excel File When the transfer is completed, click the Save as Excel, the readings in datasheet will automatically convert to an Excel file.

Electrode Maintenance

Cleaning the pH Electrode

Since pH electrode is susceptible to contamination, thoroughly clean as necessary after each use.

1. General Cleaning
   Rinse the pH electrode with distilled water and soak in 3M KCl solution.

2. Salt Deposits
   Dissolve the deposit by immersing the electrode in warm tap water. Rinse the electrode with distilled water and soak in 3M KCl solution.

3. Oil or Grease
   Place the electrode in the detergent or ethanol solution for 15 minutes. Rinse the electrode with distilled water and soak in 3M KCl solution.

4. Protein

5.  Add 1% pepsin to 0.1M HCl solution.

6.  Place the electrode in the above solution for 15 minutes.

7.  Rinse the electrode with distilled water and soak in 3M KCl solution.

8. Clogged Liquid Junction

9.  Heat a diluted KCl solution to 60° C (140° F).

10. Place the electrode into the heated solution for 10 minutes.

11. Allow the electrode to cool in an unheated KCl solution.

Reactivating the Electrode

If the pH-sensitive membrane has dried out, the electrode response will become sluggish. Immerse the electrode in a pH 4.01 buffer solution for about 30 minutes to rehydrate. If this fails, the electrode requires activation.

• Soak the electrode in 0.1M of HCl for 10 minutes.
•  Remove and rinse with distilled water, then place into 0.1M of NaOH for 10 minutes.
•  Remove and rinse again, and soak in 3M KCl solution for at least 6 hours.
  If these steps fail to restore the response, replace the electrode.

Storing the Electrode Storing the Electrode

• For best results, always soak the electrode in 3M KCl solution.
• If the above solution is not available, use a pH 4.01 buffer solution.
• DO NOT store the electrode in distilled or deionized water that will deplete the hydration layer of the pH-sensitive membrane and render the electrode useless.
• If you do not use the electrode for a period longer than 1 month, store the electrode in a storage solution.

Appendix

Optional Accessories

pH Electrodes
Order Code Description
E201-BNC For general purpose applications
E202-BNC For measuring the flat surface samples
P11 For measuring the non-high temperature liquids
P11-LiCl For measuring the non-aqueous samples
P13 For measuring the micro-volume samples
P15 For measuring the low conductivity samples
P16 For measuring the liquids with Tris buffers
P18 For measuring the slurries or soils
P19 For measuring the semisolids
P21 For measuring the colloids
P22 For measuring the high-temperature liquids

Temperature Probe

Order Code Description
TP-10K 3.5 mm jack plug, 1 m (3.3 ft) cable

Solutions

Order Code Description
PHCS-USA pH 4.01, 7.00, 10.01 buffer solutions, 480 ml
PHCS-NIST pH 4.01, 6.86, 9.18 buffer solutions, 480 ml
PHCS-ES Electrode storage solution, 480 ml
PHCS-OG Removes oil and grease contaminants, 480 ml
PHCS-PR Removes protein contamination, 480 ml

Power Supply

Order Code Description
DCPA-9V 9V DC power adapter, European standard plug

Meter Specifications

Model Bante 220
pH
Range -2.00 to 20.00 pH
Resolution 0.01 pH
Accuracy ± 0.01 pH
Calibration Points 1 to 3 points
pH Buffer Options
USA (pH 4.01, 7.00, 10.01)
NIST (pH 4.01, 6.86, 9.18)
Auto-Buffer Recognition Yes
Slope/Offset Display Yes
Temperature Compensation
0 to 100° C (32 to 212° F), manual or
automatic
mV
Range -1999 to 1999 mV
Resolution 1 mV
Accuracy ± 1 mV
Temperature
Range 0 to 105° C (32 to 221° F)
Resolution 0.1° C (0.1° F)
Accuracy ± 0.5° C (± 0.9° F)
Calibration Point 1 point
Other Specifications
Memory 100 data sets
Communication Interface USB-A
Operating Temperature 0 to 50° C (32 to 122° F)
Storage Temperature 0 to 60° C (32 to 140° F)
Relative Humidity < 80% (non-condensing)
Display LCD, 80 × 60 mm (3.15 × 2.36 in.)
Power Requirements
3 × 1.5V AA alkaline batteries or
5V DC power adapter
Auto-Off 30 minutes after last key pressed
Dimensions
170 (L) × 85 (W) × 30 (H) mm,
(6.69 × 3.35 × 1.18 in.)
Weight 300 g (10.5 oz.)

Troubleshooting

Fault Cause and Corrective Action

——
Electrode dried out. Soak the electrode in 3M KCl solution at least 30 minutes. Measurement exceeded the maximum range. Check the electrode and sample.
Drifting erratic readings Check whether the electrode is contaminated, clogged or broken.
ERR pH buffer problem. Use a freshly prepared buffer solution to calibrate the meter. The electrode has expired. Replace pH electrode

Preparation of pH Buffer Solutions

1.  The meter is packaged with pH 4.01, 7.00, 10.01 buffer reagents required for calibration. Half fill a 250 ml volumetric flask with distilled water and add the pH 7.00 buffer reagent.
2.  Swirl the volumetric flask gently to dissolve the reagent and fill it to the mark with distilled water.
3.  Cap and upend the volumetric flask several times to mix the solution.
4. The preparation of pH 4.01 and 10.01 buffer solutions is the same as above.
5. Prepared buffer solution should be stored in a hermetically sealed glass container and avoid direct sunlight.

Disposal

This product is required to comply with the European Union’s Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC and may not be disposed of in domestic waste. Please dispose of the product in accordance with local regulations at the collecting point specified for electrical and electronic equipment.

Warranty
The warranty period for the meter is one year from the date of shipment. The above warranty does not cover the electrode and pH buffer solutions. Out of warranty products will be repaired on a charged basis. The warranty on your meter shall not apply to defects resulting from:

• Improper or inadequate maintenance by the customer
• Unauthorized modification or misuse
• Operation outside of the environmental specifications of the products.

For more information, please contact the supplier.

Office: 4715 Castlewood St., Sugar land, TX 77479, USA
Tel: (+1) 346-762-7358
E-mail: [email protected]
Factory: F3, Building 2, No.2185, Laifang Rd., Shanghai 201615, China Tel: (+86) 21-6404-1598
E-mail: [email protected]

References

• Bante Instruments - Professional pH, Ion, Conductivity, Dissolved Oxygen, Turbidity Meters & Lab Equipments Manufacturer

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