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Bante821
Instruction Manual
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BANTE inststruments Bante821 Instruction Manual

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Bante821 Portable Dissolved Oxygen Meter
Instruction Manual
BANTE INSTRUMENTS CO., LTD
1
Introduction
Thank you for selecting the Bante821 portable dissolved oxygen 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°C and 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.
Bante821 Dissolved Oxygen Meter
DO100 Dissolved Oxygen Probe
Electrolyte Solution
Membrane Cap
Electrode Clip
Carrying Case
2
Display
The Bante821 portable dissolved oxygen 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.
Stable icon: Indicates the measuring value has stabilized.
Calibration mode icon: Indicates the meter is in the calibration mode.
Hold icon: Indicates the measuring value has been locked.
Setup mode icon: Indicates the meter is in the setting mode.
Calibration Due Alarm: Prompts the user to calibrate the meter.
Memory icon: Indicates the data is stored into memory.
Automatic Temperature Compensation: Indicates the temperature compensation is enabled.
Low battery alarm: When the battery is depleted, the icon will disappear.
3
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 % saturation and concentration 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 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
6-pin Connector
Used for connecting the dissolved oxygen probe
2
USB
Used for connecting the USB cable
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.
Filling the Electrolyte Solution
1. Take out the dissolved oxygen probe and electrolyte solution from the packaging. Unscrew the membrane cap.
2. Fill the membrane cap halfway with electrolyte solution.
3. Screw the membrane cap onto the probe, excess electrolyte solution will drain out.
4. Be sure the cathode of probe makes contact with membrane cap, the electrolyte solution in membrane cap should be without an air bubble.
Cathode
5
Connecting the Sensor
Insert the 6-pin connector of the dissolved oxygen probe into the corresponding connector socket on meter. Ensure the connector is fully seated. After connection is completed, DO NOT pull on the sensor cord. Always make sure that the connector is clean and dry.
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.
Prior to Use
• Remove the protective cap from the bottom of the probe.
• Switch on the meter 10 to 15 minutes and wait for the probe to polarize.
6
Setup Menu
The Bante821 dissolved oxygen 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
1 point 2 points
Pressure Coefficient: Set the barometric pressure coefficient.
Range: 450~850mmHg or 60.0~113.3kPa
760mmHg
Salinity Coefficient: Set the salinity coefficient.
Range: 0.0~50.0ppt
0.0ppt
Resolution: Set the resolution of the DO measurement.
0.01mg/L (0.1%)
0.01mg/L
0.1mg/L (1%)
Measurement Unit: Set the default measurement units.
Degrees Celsius
°C mg/L mmHg
Degrees Fahrenheit
mg/L
Milligrams per liter
ppm
Parts per million
mmHg
Pressure unit
kPa
Pressure unit
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
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 meter will automatically show the icon.
…
1 to 31 days
Disable
Disable
7
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 Press and hold the key for 3 seconds to enter the setup menu and the or key to select the menu item (e.g., CAL/P-01).
1.2 Press the Enter key, the display shows an option.
1.3 Press the or key to select the desired option.
1.4 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.
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-10.
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.
Menu
Page
Option
Menu
Year
Date
Time
8
Setting the barometric pressure
The following table describes the relationship between altitude and barometric pressure. Prior to the calibration or measurement, you need to set the compatible parameter according to the local altitude.
ALTITUDE (m)
kPa
mmHg
ALTITUDE (m)
kPa
mmHg
0
101.3
760
1600
82.9
622
100
100.1
750
1700
81.9
614
200
98.8
741
1800
80.9
607
300
97.6
732
1900
79.9
599
400
96.4
723
2000
78.9
592
500
95.2
714
2100
77.9
584
600
94.0
705
2200
76.9
577
700
92.8
696
2300
76.0
570
800
91.7
688
2400
75.0
563
900
90.5
679
2500
74.1
556
1000
89.4
671
2600
73.2
549
1100
88.3
662
2700
72.3
542
1200
87.2
654
2800
71.4
536
1300
86.1
646
2900
70.5
529
1400
85.0
638
3000
69.6
522
1500
84.0
630
3100
68.7
515
1. Press and hold the key for 3 seconds to enter the setup menu and the or key until the meter shows PRES/P-02.
2. Press the Enter key, the meter shows the default barometric pressure.
3. Press the or key to set the value, press the Enter key to confirm. Setting 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.
9
Setting the salinity coefficient
Salt dissolved in water will influences oxygen content of water. If your sample belong to high concentration liquids, please make sure that you have selected an applicable salinity coefficient before measurement. For the low concentration liquids, please use the default coefficient 0.0 ppt.
1. Press and hold the key for 3 seconds to enter the setup menu and the or key until the meter shows SAL/P-03.
2. Press the Enter key, the meter shows the default salinity coefficient (0.0 g/L).
3. Press the or key to set the salinity of sample, press the Enter key to confirm. Setting is completed.
DO Calibration in % Saturation Mode
The Bante821 dissolved oxygen meter is able to perform either 1 or 2 points calibration. For single point calibration, we recommend that you perform 100% saturation calibration in the air-saturated water. If the 2 points calibration is selected, the zero oxygen solution needs to be used.
Single point calibration - 100% saturation
1.1 Ensure that the meter shows measurement unit “%” and you have selected 1 point calibration in the setup menu. Press the Cal key, the meter shows
100.0%/CAL 1.
1.2 Hold the dissolved oxygen probe in the air at 100% relative humidity or place the probe into the air-saturated water for 15 minutes. Press the Enter key, the meter begins the calibration, the Calibration icon continuously flashing.
1.3 Wait for the reading to stabilize, the meter automatically shows END. Calibration is completed.
10
2 points calibration
2.1 Ensure that you have selected 2 point calibration in the setup menu.
2.2 Press the Cal key, the meter shows 100.0%/CAL 1, press the or key until the display shows 0/CAL1.
2.3 Immerse the dissolved oxygen probe into the zero oxygen solution for at least 10 minutes. Press the Enter key, the meter begins the calibration, the Calibration icon continuously flashing.
2.4 Wait for the reading to stabilize, the display will show “100%/CAL2”, the meter prompts you to continue with second point calibration.
2.5 Immerse the dissolved oxygen probe into the air-saturated water for 15 minutes, press the Enter key to confirm. Wait for the reading to stabilize, the meter automatically shows END. Calibration is completed.
Performing a percentage saturation calibration will simultaneously calibrate the corresponding mg/L (or ppm) concentration value. Therefore,
additional mg/L calibration is not required in most circumstances.
DO Calibration in mg/L or ppm Mode
Single point calibration - air-saturated water
1.1 Ensure that the meter shows measurement unit “mg/L or ppm” and you have selected 1 point calibration in the setup menu. Press the Cal key, the meter shows 8.25mg/L/CAL 1 (@25°C).
1.2 Immerse the dissolved oxygen probe into the air-saturated water for 15 minutes. Press the Enter key, the meter begins the calibration, the
Calibration icon continuously flashing.
1.3 Wait for the reading to stabilize, the meter automatically shows END. Calibration is completed.
11
2 points calibration
2.1 Ensure that you have selected 2 point calibration in the setup menu.
2.2 Press the Cal key, the meter shows 8.25mg/L/CAL 1 (@25°C), press the or key until the display shows 0.00mg/L/CAL1.
2.3 Immerse the dissolved oxygen probe into the zero oxygen solution for at least 10 minutes. Press the Enter key, the meter begins the calibration, the Calibration icon continuously flashing.
2.4 Wait for the reading to stabilize, the display will show “8.25mg/L/CAL 2”, the meter prompts you to continue with second point calibration.
2.5 Immerse the dissolved oxygen probe into the air-saturated water for 15 minutes, press the Enter key to confirm. Wait for the reading to stabilize, the meter automatically shows END. Calibration is completed.
If you want to exit the calibration, press the Meas key.
12
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. Press and hold the
o
C key for 3 seconds to enter the temperature calibration mode.
2. Press the or key to set the temperature value.
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.
Dissolved Oxygen Measurement
The Bante821 portable dissolved oxygen meter is suitable for measuring the water, wastewater, brine and other liquids. If the sample is belong to the seawater or other water containing large amounts of salt, please setting the salinity coefficient before measurement. Some gas and steam such as chloride, sulfur dioxide, sulfureted hydrogen, ammonium, carbon dioxide and iodin can permeate the membrane via diffusion. So their existence will influence the measurement of dissolved oxygen. If the sample contains the solvent, grease, sulfide and alga, the membrane on the probe will be blocked, damaged or eroded.
1. Connect the dissolved oxygen probe to meter and wait for 15 minutes to polarize the probe.
2. If necessary, to set the barometric pressure and salinity coefficient in the setup menu (Refer to page 8 and 9).
3. Immerse the probe in the sample solution, make sure the temperature sensor on the probe is fully immersed.
4. Stir the probe gently. 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 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.
Temperature Sensor
13
Storing and Recalling Data
The Bante821 portable dissolved oxygen 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.
14
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.
15
Electrode Care and Maintenance
• Always keep the membrane of the dissolved oxygen probe is wet or moist.
• If you do not use the probe for long periods, please screw off membrane cap and rinse the cathode, anode and membrane with deionized water, then
soak up residual water on them with filter pape. Install the probe again.
Troubleshooting
LCD DISPLAY
CAUSE
CORRECTIVE ACTION
DO probe does not connect to meter
Check the connector of probe.
Measured value is out of range
Check the DO membrane whether clogged, dirty or broken.
Electrolyte solution is depleted
Refilling electrolyte solution.
Zero oxygen solution is contaminated
Replace the calibration solution.
Keypad is not working properly
Replace the batteries.
Specifications
Dissolved Oxygen
Model
Bante821
Range
0.00~20.00mg/L
Accuracy
± 0.2mg/L
Resolution
0.01/0.1mg/L
Calibration Points
1 or 2 points
% Saturation of Oxygen
Range
0.0~200.0%
Accuracy
± 2.0%
Resolution
0.1%
Others
Temperature Compensation
0~50°C, 32~122°F, Automatic
Pressure Correction
60.0~112.5 kPa, 450~850 mmHg
Salinity Correction
0~50g/L
Memory
Stores up to 500 data sets
Output
USB communication interface
Power Requirements
3 × 1.5V “AA” batteries or DC5V power adpter
Dimensions
170 (L) × 85 (W) × 30 (H)mm
Weight
300g Membrane cap
Cathode and Anode
16
Addendum: Preparation of the Zero Oxygen Solution
Dissolve 500mg of sodium sulfate (Na2SO3) reagent and a small amount of cobalt(II) chloride hexahydrate (CoCl2 • 6H2O) in the 250mL distilled water, mix the solution until the reagent is completely dissolved.
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 the 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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