Bante 220 Portable pH Meter
Instruction Manual
BANTE INSTRUMENTS CO., LTD
Bante 220 Portable pH Meter
1
Introduction
Thank you for selecting the Bante 220 portable 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
Before unpacking, ensure that the current work environment meets following conditions.
● Relative humidity is less than 80 %.
● Ambient temperature is greater than 0 oC and less than 60 oC.
● No potential electromagnetic interference.
The following list describes the standard components of the meter. After the unpacking, please check all components are complete. If any are damaged or
missing, please contact nearest distributor.
Bante 220 pH Meter
E201 pH Electrode
TP-10K Temperature Probe
pH Buffer Solutions
Electrode Clip
Carrying Case
Bante 220 Portable pH Meter
2
Display
The 220 meter is equipped with an easy-read LCD display that used to show the measured values and mode icons. The following table describes the function
of each icon.
INDEX:
Measurement mode icon:
Indicates the meter is in the measurement mode.
Low battery alarm:
When the battery is depleted, the icon will disappear.
Calibration mode icon:
Indicates the meter is in the calibration mode.
Electrode slope icon:
Indicates the average slope of the pH electrode.
Setup mode icon:
Indicates the meter is in the setting mode.
Hold icon:
Indicates the measuring value has been locked.
Memory icon:
Indicates the data is stored into memory.
Automatic Temperature Compensation:
Indicates the temperature compensation is enabled.
Bante 220 Portable pH Meter
3
Keypad
The meter has a succinct membrane keypad, names and symbols describe the each function key controls.
KEY
FUNCTION
● Switches the meter ON/OFF.
● Locks the measured value, press the key again to resume measuring.
● Exits the calibration or setting and returns to measurement.
● Toggles between pH and mV measurement modes.
● Sets the temperature (Press and hold the key for 3 seconds).
● Starts calibration.
● Enters the setup menu (Press and hold the key for 3 seconds).
● Stores current reading to memory.
● Increase value or scroll up through the menu item.
● Views the calibration report or data logs.
● Decrease value or scroll down through the menu item.
● Confirms the calibration, settings or displayed options.
● Turn on/off the backlight (Press and hold the key for 3 seconds).
Connectors
The meter provides 3 connectors for connecting the various types of sensors. Listed in the following table are the details of these connectors.
INDEX:
NO.
CONNECTOR
DESCRIPTION
1
BNC Connector
Used for connecting the pH or ORP electrode
2
Phone Jack
Used for connecting the temperature probe
3
USB
Used for connecting the USB cable
Bante 220 Portable pH Meter
4
Installing the Batteries
● Remove the battery cover from backside of the meter.
● Insert three AA batteries into the battery compartment, note polarity.
● Replace the battery cover into its original position. Installation is completed.
When the batteries are depleted, the meter allows using the DC5V power adapter with USB cable for power supply. NOTE, take out the batteries.
Connecting the Sensors
● Take out the pH or ORP electrode from the packaging. Insert the connector into the BNC connector socket on meter, rotate and push the connector
clockwise until it locks. After the connection is completed, DO NOT pull on the cable. Always make sure that the connector is clean and dry.
● Insert the connector of temperature probe into to the corresponding connector socket. Ensure the connector is fully seated.
Bante 220 Portable pH Meter
5
Prior to Use
Remove the protective cap from the bottom of the electrode.
● pH electrode: If the glass sensitive membrane has dried out, soak the electrode in 3M KCL solution (pH adjusted to 4.0) for at least 30 minutes.
● ORP electrode: If the sensing element has dried out, soak the electrode in 4M KCL solution for at least 20 minutes.
Power On/Off
● Press the Meas key to turn on the meter, the display shows the measured value.
● Press and hold the Meas key for 5 seconds, the meter will turn off.
To enable the Auto-Power Off function, please refer to page 6 “Setup Menu”.
Bante 220 Portable pH Meter
6
Setup Menu
The 220 meter contains an integrated setup menu that is used to customize the displayed option to meet measurement requirements. The following table
describes the functions of the menu items.
MENU
DESCRIPTION
OPTIONS
DESCRIPTION
DEFAULT
Calibration Points:
Set the number of calibration points.
1 point
3 points
2 points
3 points
pH Buffer:
Set the pH buffer group for calibration and
auto-recognition.
USA (pH4.01/7.00/10.01)
USA
NIST (pH4.01/6.96/9.18)
Measurement Unit:
Set the default temperature unit.
Degrees Celsius
o
C
Degrees Fahrenheit
Auto-Hold:
If enabled, the meter will automatically sense a
stable reading and lock the measurements.
Enable
Disable
Disable
Auto-Power Off:
If enabled, the meter will automatically turn off
if no key is pressed within 30 minutes.
Enable
Disable
Disable
Clear Stored Data:
Delete all stored readings in the memory.
Enable
Disable
Disable
Factory Reset:
If enabled, all of the calibration data and selected
parameters will back to factory default settings,
the meter must be recalibrated.
Enable
Disable
Disable
Setting a default option
1. Press and hold the key for 3 seconds to enter the setup menu and the or key to select the menu item.
2. Press the Enter key, the meter shows an option.
3. Press the or key to select the desired option, press the Enter key to confirm. Setting is completed.
If you want to cancel the setting, press the Meas key.
Menu
Page
Option
Menu
Bante 220 Portable pH Meter
7
Temperature Compensation
In order to get accurate measuring results, we recommend that using a temperature probe for the calibration and measurements.
Automatic temperature compensation
Connect the temperature probe to the meter (Refer to page 4 “Connecting the Sensors”). 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 oC icon will show on the display indicating that the meter is switched to the manual temperature
compensation mode. To set the temperature value of sample, follow the steps below.
1. Press and hold the
o
C key for 3 seconds to enter the temperature setting mode.
2. Press the or key to modify the temperature value.
3. Press the Enter key to confirm.
During the setting process, press the 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.
ATC
o
C
Bante 220 Portable pH Meter
8
pH Calibration
The 220 portable pH meter allows 1 to 3 points calibration in the pH mode. We recommend that you perform at least 2 points calibration for high accuracy
measurement. The meter will automatically recognize and calibrate to following standard buffer values.
USA Standard Buffers
pH4.01, 7.00, 10.01
NIST Standard Buffers
pH4.01, 6.86, 9.18
Single point calibration should only be carried out with pH7.00 or 6.86, otherwise calibration will not be accepted.
Make sure to calibrate the meter when attaching a new electrode or during first use. DO NOT reuse the calibration solution after calibration, contaminants
in solution will affect the calibration and eventually the accuracy of the measurement.
Single point calibration
1.1 Ensure that the meter is in the pH measurement mode and you have selected 1 point calibration
in the setup menu.
1.2 Press the Cal key, the meter shows pH7.00/CAL 1 (or 6.86/CAL 1).
1.3 Rinse the pH electrode with distilled water, place the electrode (and temperature probe) into
the pH7.00 (or 6.86) buffer solution. The end of the electrode must be completely immersed
into the calibration solution. Stir the electrode gently to create a homogeneous solution. Press
the Enter key, the Calibration icon begins flashing.
1.4 Wait for the reading to stabilize, the meter automatically shows END and returns to the
measurement mode. Calibration is completed.
Bante 220 Portable pH Meter
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Multi-point calibration
2.1 Ensure that you have selected 2 or 3 points calibration in the setup menu.
2.2 Repeat the steps 1.2 to 1.3 above. When the first calibration point is completed, the display
will show CAL2. The meter prompts you to continue with second point calibration.
2.3 Rinse the pH electrode with distilled water, place the electrode (and temperature probe) into
the next buffer solution. Press the Enter key, the meter automatically recognizes the
calibration solution (e.g., pH4.01) and begins the calibration, the Calibration icon continuously
flashing.
2.4 Wait for the reading to stabilize, the display will show CAL3. The meter prompts you to
continue with third point calibration.
2.5 Repeat the step 2.3 above until the display shows END. The meter automatically returns to
the measurement mode. Calibration is completed.
● During the calibration process, if the meter shows , please check the pH electrode and ensure the pH buffers are fresh and uncontaminated.
● If the electrode slope is not within the normal range (< 70% or >110%), the icon will disappear on the display.
● If you want to exit the calibration, press the Meas key.
Bante 220 Portable pH Meter
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Viewing the calibration report
3.1 Press the MR key in the measurement mode, the meter shows LOC/P-1.
3.2 Press the or key until the display shows ELE/P-2, press the Enter key. The meter shows
the zero-point offset (e.g., 0.5mV).
3.3 Press the key, the meter shows the calibration point 1 (e.g., pH4.01).
3.4 Press the key, the meter shows the calibration point 2 (e.g., pH7.00).
3.5 Press the key, the meter shows the electrode slope (e.g., 99.8%).
3.6 To exit the calibration report, press the Meas key.
If the meter does not calibrated, the display only shows ----.
Bante 220 Portable pH Meter
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Temperature Calibration
During the measurement process, if the temperature reading displayed differs from that of an accurate thermometer, the meter needs to be calibrated.
4.1 Press and hold the
o
C key for 3 seconds to enter the temperature calibration mode.
4.2 Press the or key to set the temperature value.
4.3 Press the Enter key to confirm. Calibrating is completed.
During the setting process, press the 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.
Measurement
● Press the Mode key to select the measurement mode (pH or mV).
● Rinse the electrode with distilled water. Place the electrode (and temperature probe) into the sample solution, stir the electrode gently. Record the
measured value when the reading is stable.
Auto-Hold
The 220 meter contains an Auto-Hold function. If enabled, the meter will automatically sense a stable reading and lock the measurements, the HOLD icon
appears on the display. If disabled, press the key, the meter will immediately lock the displayed value. Press the Meas key to resume measuring.
Bante 220 Portable pH Meter
12
Storing and Recalling Data
The meter is capable of storing and recalling up to 100 data sets.
Storing readings into memory
During the measurement process, press the MI key to store the reading into the memory, the
Memory icon appears on the display.
Viewing stored readings
1. Press the MR key in the measurement mode, the meter shows LOC/P-1 (Data Log).
2. Press the Enter key, the meter shows the serial number of the stored data.
3. Press the key, the meter shows the stored data.
4. Press the key again, the meter shows next data set.
5. Press the Meas key, the meter returns to the measurement mode.
Clearing the memory
Please refer to page 6 “Setup Menu”.
Bante 220 Portable pH Meter
13
Electrode Care and Maintenance
pH electrode
Since pH electrode is susceptible to dirt and contamination, clean as necessary depending on the extent and condition of use.
● After measuring: rinse the electrode in distilled water, store the electrode into the 3M KCL solution.
● Salt deposits: soak the electrode in warm tap water to dissolve deposits, then thoroughly rinse with distilled water.
● Oil or Grease film: wash the glass sensitive membrane of electrode gently in some detergents and water. If necessary, using the alcohol to clean the
sensitive membrane, then rinse with distilled water. Place the electrode in the 3M KCL solution for at least 30 minutes.
● Clogged reference junction: heat a diluted KCl solution to 60 oC to 80 oC. Place the electrode 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. Place the electrode in the solution for 10 minutes. Rinse the electrod with distilled
water.
Rectivating the pH Electrode:
If stored and cleaned properly, the electrode should be ready for immediate use. However, a dehydrated sensitive membrane may cause sluggish response.
To rehydrate the sensitive membrane, immerse the electrode in a pH4.01 buffer solution for 10 to 30 minutes. If this fails, the electrode requires activation.
1. Soak the electrode in 0.1M HCl for 5 minutes.
2. Remove and rinse with deionized water, then place in 0.1M NaOH for 5 minutes.
3. Remove and rinse again, and soak in 3M KCL solution for at least 30 minutes.
ORP electrode
● Ensure that the ORP electrode is thoroughly washed with distilled water after use.
● In aggressive chemicals, dirty or viscous solutions, and solutions with heavy metals or proteins, take readings quickly and rinse electrode immediately.
● If you do not use the electrode for long periods, store the electrode with 4M KCL solution.
Cleaning the ORP Electrode:
Contamination of the sensing element often results in slow response and inaccurate readings. If necessary, clean the element by one of the following
procedures.
Inorganic Deposits:
1.1 Soak the ORP electrode in 0.1M HCl for 10 minutes.
1.2 Remove and rinse with distilled water, then place in alcohol for 5 minutes.
1.3 Remove and rinse again, and soak in pH4.01 buffer solution for 15 minutes.
Oil and Grease Films:
2.1 Wash the electrode gently in some detergents and water.
2.2 Dip the electrode in the 4M KCL solution for at least 30 minutes.
Troubleshooting
LCD DISPLAY
CAUSE
CORRECTIVE ACTION
Electrode has dried out
Soak the pH electrode in 3M KCL solution at least 30 minutes.
Measured value is out of range
Check the electrode whether clogged, dirty or broken.
Incorrect pH buffer solutions
Using the fresh pH buffer solutions for calibration.
Electrode has expired
Replace the pH electrode.
Keypad is not working properly
Replace the batteries.
Bante 220 Portable pH Meter
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Specifications
pH
Model
Bante 220
Range
-2.00~20.00pH
Resolution
0.01pH
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)
Automatic Buffer Recognition
Yes
mV
Range
-1999~1999mV
Accuracy
± 1mV
Resolution
1mV
Temperature
Range
0~105
o
C, 32~221
o
F
Resolution
0.1
o
C
Accuracy
± 0.5
o
C
Calibration Points
1 point
Temperature Unit
o
C or oF, Selectable
Others
Temperature Compensation
0~100
o
C, 32~212
o
F, Manual or Automatic
Data Hold
Manual or Automatic endpoint detection
Power Off
Manual or Automatic (30 minutes after last key pressed)
Memory
Stores up to 100 data sets
Output
USB communication interface
Connector
BNC
Display
LCD
Operating Temperature
0~60oC
Relative Humidity
<80%
Power Requirements
3×1.5V “AA” batteries or DC5V power adpter
Dimensions
170(L)× 85(W)× 30(H)mm
Weight
300g
Bante 220 Portable pH Meter
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Addendum 1: pH Electrode Selection Guide
The 220 portable pH meter comes with a general purpose pH electrode that is used to measure the pH of the liquids. If this electrode can not meet your
measurement requirements, please refer to the table below to select an applicable probe.
SAMPLE TYPE
P11
P12
P13
P15
P16
P18
P19
P21
E201
E202
Agar
● Beer
● ● ●
● ● ●
Blood Products
● ● ●
● ● Bread, Dough
●
●
Cement ●
Cosmetics
● ● ●
● ● ●
Dairy Products
● ● ●
●
● Education ●
●
●
Fats/Cream
●
Field Use
●
●
●
Fish Products
●
● Lab Flasks
● Low Ionic ●
● ● Meat, Cheese
●
● Micro Samples
●
Paint
●
●
● Photographic
Soil
●
●
Surface
● Test Tubes
●
●
Tris Buffer
●
Viscose Samples
●
Addendum 2: ORP Electrode Selection Guide
ORDER CODE
APPLICATION
501
Suitable for the sample with strong redox potential, plastic body, temperature range: 0~80
o
C
502
Suitable for the sample with weak redox potential, plastic body, temperature range: 0~80 oC
504
Suitable for the high temperature samples, glass body, temperature range: 0~100 oC
Bante 220 Portable pH Meter
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Addendum 3: Preparation of pH Buffer Solutions
● 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 the
reagent is completely dissolved.
● Preparation of pH4.01 and 10.01 buffer solutions are the same as above.
● Prepared pH buffer solutions should be stored in hermetically sealed glass containers.
Addendum 4: Preparation of ORP Standard Solutions
● Add 3 grams of quinhydrone to 500ml buffer pH4.01 and stir for 15 minutes. Un-dissolved quinhydrone powder must be present.
Potential @ 25°C =+263mV (± 10mV)
● Add 3 grams of quinhydrone to 500ml buffer pH7.00 and stir for 15 minutes. There must be an excess of undissolved quinhydrone powder.
Potential @ 25°C =+87mV (± 10mV)
Hazardous Substance Statement
Bante Instruments is committed to the reduction and eventual elimination of all hazardous substances in both the manufacturing process and fini shed
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. 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 customer.
● Unauthorized modification or misuse.
● Operation outside of the environment specifications of the products.
For more information, please contact the nearest authorized distributor.
BANTE INSTRUMENTS CO., LTD
E-mail: banteinstruments@yahoo.com
Phone: +8621-6404-1598
Website: www.bante-china.com
The information in this document is subject to change without notice. Copyright © Bante Instruments, 2018. All rights reserved.
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