Bante Instruments Bante221 User manual

Bante221 Portable pH/ORP Meter
Instruction Manual
BANTE INSTRUMENTS CO., LTD

Bante221 Portable pH/ORP Meter
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Introduction
Thank you for selecting the Bante221 portable pH/ORP 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°Cand less than 60°C.
•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.
Bante221 pH/ORP Meter
E201 pH Electrode
TP-10K Temperature Probe
pH Buffer Solutions
Electrode Clip
Carrying Case

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Display
The Bante221 portable pH/ORP 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.
Stable icon:
Indicates the measuring value has stabilized.
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.
Calibration Due Alarm:
Prompts the user to calibrate the meter.
Electrode slope icon:
Indicates the average slope of the pH electrode.
Automatic Temperature Compensation:
Indicates the temperature compensation is enabled.

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Keypad
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 available measurement modes (pH, mV and ORP).
•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
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

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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 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.

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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 (purchase separately):
If the sensing element has dried out, soak the electrode in 4M KCL solution for at least 20 minutes.
Switching the Meter On and Off
•Press the Meas key to switch on the meter, the display shows the measured value.
•Press and hold the Meas key for 5 seconds, the meter will switch off.
To enable the Auto-Power Off feature, please refer to chapter SETUP MENU.

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Setup Menu
The Bante221 portable pH/ORP meter contains an integrated setup menu that is used to customize the displayed option to meet measurement requirements.
In the different modes, the meter will show the corresponding options. The following table describes the functions of the menu items.
pH MODE:
MENU
DESCRIPTION
OPTIONS
DESCRIPTION
DEFAULT
pH Buffer:
Set the pH buffer group for calibration and
auto-recognition.
USA (pH1.68/4.01/7.00/10.01/12.45)
USA
NIST (pH1.68/4.01/6.96/9.18/12.45)
DIN (pH1.09/4.65/6.79/9.23/12.75)
User-Defined
Calibration Points:
Set the number of calibration points.
1 point
3 points
2 points
3 points
4 points
5 points
Resolution:
Set the resolution of the pH measurement.
0.001pH
0.001pH
0.01pH
0.1pH
Measurement Unit:
Set the default temperature unit.
Degrees Celsius
°C
Degrees Fahrenheit
ORP MODE:
MENU
DESCRIPTION
OPTIONS
DESCRIPTION
DEFAULT
Resolution:
Set the resolution of the ORP measurement.
0.1mV
0.1mV
1mV
GENERAL OPTIONS:
MENU
DESCRIPTION
OPTIONS
DESCRIPTION
DEFAULT
Stability Criteria:
When the LO option is enabled, the Stable icon will
quickly appear on the display.
When the HI option is enabled, the icon will take
longer to appear, but guarantees high accuracy of
the measurement.
Low
Low
High
Auto-Hold:
When the option is enabled, the meter will
automatically sense a stable reading and lock the
measurements.
Enable
Disable
Disable

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Auto-Power Off:
When the option is enabled, the meter will
automatically turn off if no key is pressed within a
specified time period.
10 minutes
Disable
20 minutes
30 minutes
Disable
Calibration Due:
When the option is enabled, if the meter does not
calibrated within a specified time period, the display
will automatically show the icon.
…
1 to 31 days
Disable
Disable
Date and Time:
Set the current date and time.
---
Year-month-day, hour-minutes
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 the default option
1.1 If necessary, press the Mode key until the display shows desired measurement mode (e.g., pH).
1.2 Press and hold the key for 3 seconds to enter the setup menu and the or key to select the menu item (e.g., BUF/P-01).
1.3 Press the Enter key, the display shows an option.
1.4 Press the or key to select the desired option.
1.5 Press the Enter key to confirm, the meter returns to the measurement mode. Setting is completed.
If you want to exit the setting, press the Meas key.
Menu
Page
Option
Menu

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Setting the date and time
2.1 Press and hold the key for 3 seconds to enter the setup menu and the or key until the display shows DATE/P-09.
2.2 Press the Enter key, the meter shows current year (e.g., 2018).
2.3 Press the or key to set year and the Enter key to confirm, the display shows current date and time (Format: month-day, hour-minutes).
2.4 Press the or key to set the date and time, press the Enter key to confirm until the meter returns to the measurement mode. Setting is
completed.
Year
Date
Time

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Temperature Compensation
For better accuracy, we recommend the use of either a sensor with a built-in or a separate temperature probe for the calibration or 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 °C 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 oCkey 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.
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
oC

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pH Calibration
The Bante221 portable pH/ORP meter allows 1 to 5 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
pH1.68, 4.01, 7.00, 10.01, 12.45
NIST Standard Buffers
pH1.68, 4.01, 6.86, 9.18, 12.45
DIN Standard Buffers
pH1.09, 4.65, 6.79, 9.23, 12.75
If the USER option is selected, the meter will allow only 2 points calibration. Single point calibration should only be carried out with pH7.00, 6.86 or 6.79,
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 display shows pH7.00/CAL (or 6.86/CAL, or 6.79/CAL).
1.3 Rinse the pH electrode with distilled water, place the electrode (and temperature probe) into
the pH7.00 (or 6.86, or 6.79) 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.

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Multi-point calibration
2.1 Ensure that you have selected 2 to 5 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. The meter will automatically recognize 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.

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pH calibration with custom buffers
3.1 Ensure that you have selected the USER option in the setup menu. The calibration solutions
should be at least 1 pH unit apart from each other.
3.2 Rinse the pH electrode with distilled water, place the electrode (and temperature probe)
into the custom buffer solution. Stir the electrode gently and wait until the measurement is
stable.
3.3 Press the Cal key, the meter enters the calibration mode.
3.4 If necessary, press the or key to set the calibration value, press the Enter key to
begin the calibration (e.g., 6.00pH).
3.5 Wait for the reading to stabilize, the display shows CAL2.The meter prompts you to
continue with second point calibration.
3.6 Rinse the pH electrode with distilled water, place the electrode (and temperature probe)
into the next buffer solution and wait until the measurement is stable.
3.7 If necessary, press the or key to set the calibration value, press the Enter key to
begin the calibration (e.g., 4.00pH).
3.8 Wait for the reading to stabilize, the meter automatically shows END and 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.

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Viewing the pH calibration report
4.1 Press the MR key in the pH measurement mode, the meter shows LOC/P-01.
4.2 Press the or key until the meter shows ELE/P-02.
4.3 Press the Enter key, the meter shows the last calibration date (Format: month-day).
4.4 Press the key, the meter shows the zero-point offset (e.g., 2mV).
4.5 Press the key, the meter shows the pH buffer group and slope (e.g., pH4~7, slope: 99.8%).
4.6 To exit the calibration report, press the Meas key.
If the meter does not calibrated, the display will only show “----".

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ORP Calibration
The Bante221 portable pH/ORP meter allows 1 point calibration in the relative mV mode, but calibration is not necessary unless exact readout agreement
with a work standard and at a specific ORP value is needed.
1.1 Press the Mode key until the meter shows icon.
1.2 Rinse the ORP electrode with distilled water, place the electrode into the calibration solution.
Stir the electrode gently and wait until the measurement is stable.
1.3 Press the Cal key, the meter enters the calibration mode.
1.4 Press the or key to set the displayed value (e.g., 105 R.mV).
1.5 Press the Enter key to confirm, the Calibration icon begins flashing.
1.6 Wait for the reading to stabilize, the meter automatically shows END and returns to the
measurement mode. Calibration is completed.

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Viewing the ORP calibration report
2.1 Press the MR key in the ORP measurement mode, the display shows LOC/P-01.
2.2 Press the or key until the display shows ELE/P-02.
2.3 Press the Enter key, the display shows the last calibration date (Format: month-day).
2.4 Press the key, the display shows the offset potential (e.g., 5mV).
2.5 To exit the calibration report, press the Meas key.

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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.
1. Connect the temperature probe to the meter and place into a solution with a known accurate temperature.
2. Press and hold the oCkey for 3 seconds to enter the temperature setting mode.
3. Press the or key to set the temperature value.
4. 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.

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pH Measurement
1. Press the Mode key until the display shows icon.
2. Rinse the pH 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.
ORP Measurement
The Bante221 portable pH/ORP meter provides two millivolt measurement modes.
•Press the Mode key until the display shows measurement unit “mV”, the meter is now enters the absolute mV measurement mode.
•Press the Mode key until the display shows icon, the meter is now enters the relative mV measurement mode.
•Select one of the above modes. Place the ORP electrode into the sample. Record the measured value when the reading is stable.
Auto-Hold
The 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.
R.mV
mV

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Storing and Recalling Data
The Bante221 portable pH/ORP meter is capable of storing and recalling up to 500 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-01 (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 date and time of the stored data (Format: month-day,
hour-minutes).
4. Press the key, the meter shows the stored data.
5. Press the key again, the meter shows next data set.
6. Press the Meas key, the meter returns to the measurement mode.
Clearing the memory
Please refer to page 6 SETUP MENU.

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Communication
Bante Instruments provides a Data Acquisition System that can be used to transfer data, receive the measuring values or import the data to Excel. You are
able to download this software from our official website at www.bante-china.com. Before installation, ensure that Windows 7/8/10 operating system has
been installed on your computer.
Receiving data
•Connect the USB cable to meter and computer. Click the DAS icon, the system will automatically scan an available communication port and show the
message box “Found a port on your computer”.
•Click the OK button, the application starts.
•Click the Connect button, the screen shows “Port is connected” indicate that the communication between the meter and the computer has been
established.
•Click the OK button to confirm.
•Click the Receive button, the stored data automatically transfer to computer.
Interval recording
This function is used for recording the measuring value within the specify time period.
•Click the Interval Recording button and select a time option.
•Click the Receive button, the measured value will automatically send to data sheet.

•The first data need 1 minute to be shown on screen.
•Do not press any key on meter during the Interval Recording mode, it will cause communication interruption.
Graph mode
This function is used for viewing the variations of the measured parameter continuously.
Click the Graph button, the screen immediately shows the curve graph. To quit current mode, click the Back button.
Create the excel file
When the transfer is completed, click the Save as Excel button, the measured values in the data sheet will automatically convert to Excel file.
Once the software is closed, all received data will be lost and can not be recovered.