BANTE 820 Portable Dissolved Oxygen Meter User Manual

      BANTE 820 Portable Dissolved Oxygen Meter

Overview

Introduction
Thank you for selecting the 820 portable dissolved oxygen meter. This user manual provides a step-by-step guide to help you operate 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.

• 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. Electrode clip
2. Electrolyte solution
3. 820 meter
4. Dissolved oxygen electrode
5. Membrane cap

Meter Overview

1. Sensor connections
2. Membrane keypad
3. Slot for electrode clip
4. Slot for hand strap
5. Display
6. Battery compartment
7. Socket for dissolved oxygen electrode (6-pin DIN)
8. USB-A interface to the computer or power adapter

Display

• Description
• Indicates that the meter is in the measurement mode
• Indicates that the meter is in the calibration mode
• Indicates that the meter is in the setup mode
• Indicates that you are viewing the stored readings or a
• reading is stored into the memory
• When the battery voltage falls below the minimum power
• requirements, the icon automatically disappears
• Indicates that the measurement is locked
• Indicates that the automatic temperature compensation is enabled

Keypad

• Switch the meter on or off
• Lock or unlock the measurement
• Exit the calibration, settings, data logs and return to the measurement mode
• Select the % saturation or mg/L mode
• Press and hold the key to enter the temperature setting
• Start calibration
• Press and hold the key to enter the setup menu
• Store current reading to memory
• Increase value or scroll up through a list of options
• View the data log or calibration log
• Decrease value or scroll down through a list of options
• Confirm the calibration or displayed option
•  Press and hold the key to switch the backlight on or off

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 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 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.

Setup

Meter Setup
The 820 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.

Factory Reset
Reset the meter to factory default settings. Note,  the meter must be recalibrated. Enable Disable (default)

Setting a Default Option

1.  In the measurement mode, press and hold the key to enter the setup menu. Press the  /  key to select a menu item.
2. Press the Enter key, the meter shows the current option.
3. Press the  key to select a desired option. Press the Enter key to save and return to the measurement mode.

To exit the setup menu without saving changes, press the Meas key.

Setting the Barometric Pressure
The table below describes the relationship between the altitude and barometric pressure, make sure to set a compatible parameter before the calibration or measurement.

1. In the measurement mode, press and hold the key to enter the setup menu.
2.  Press the  key until the display shows (pressure).
3. Press the Enter key, the meter shows the default pressure unit.
4. If necessary, press the  key to select the “mmHg” or “kPa”. Press the Enter key, the meter shows the default barometric pressure value.
5. Press the key to modify the value, press the Enter key to save. During the setting process, press the  key once, the setting value will increase or decrease by 0.1. Press and hold the  /  key, the setting value will increase or decrease by 1.

Calibration

Prior to Use Filling the Electrolyte Solution

1. Take out the dissolved oxygen electrode from the carrying case. Unscrew the membrane cap from the bottom of the electrode, rinse the inside and outside with distilled water and blot dry.
2.  Fill the membrane cap halfway with electrolyte solution.
3. Screw membrane cap back onto the electrode. Some electrolyte solution will overflow during this process.
4. Check the electrode, ensure that no air bubbles are trapped in the electrolyte solution and membrane is not creased or damaged.

Polarizing the Electrode
Insert the connector of the dissolved oxygen electrode into the connector socket on meter, ensure that the connector is fully seated.

Switch on the meter and wait 10 minutes for the electrode to polarize.

Dissolved Oxygen Calibration
The 820 meter allows 1 or 2 points dissolved oxygen calibration. If you have selected the single point calibration in the setup menu, werecommend that you perform a 100% saturation calibration in the. air-saturated water. If the 2 points calibration is selected, the zero. oxygen solution needs to be used. Note: During the calibration and measurement, the temperature sensor on electrode must be immersed in the sample solution completely, the solution should keep 0.3 m/s of minimum flow rate to avoid oxygen starvation at the membrane.

DO Calibration in mg/L Mode

Calibration

Points Calibration

Press the Cal key, the display shows 100.0% / CAL1.

•  Hold the dissolved oxygen electrode in the air at 100% relative humidity or place the electrode into the air-saturated water for 10 minutes. Press the Enter key, the meter begins the calibration.

When the reading has stabilized, the meter will show and return to the measurement mode.
Points Calibration

• Ensure that you have selected 2 points calibration in the setup menu.
• Press the Cal key and the  key, the meter shows 0.0% / CAL1.
•  Place the electrode into the zero oxygen solution for 10 minutes and stir gently. Press the Enter key to begin the calibration.
•  When the reading has stabilized, the display will show 100.0% / CAL2. The meter prompts you to continue with second point calibration.
•  Repeat the step 3.3 above until the meter shows . Calibration is completed. To exit the calibration without saving changes, press the Meas key.

Temperature Calibration

1. Place the dissolved oxygen electrode into a solution with a known accurate temperature
2. Press and hold the ° C key to enter the temperature setting.
3. Press the key to modify the temperature value.
4. Press the Enter key to save.

Measurement

The 820 meter can be used to measure the water, wastewater, brineand other liquids. If your sample is seawater or water containing large amounts of salt, make sure to set the salinity coefficient before measurement. Some gas and steam such as chloride, sulfur dioxide, sulfureted hydrogen and carbon dioxide can permeate the membrane via diffusion. Their existence will influence the measurements. If the sample contains solvent, grease, sulfide and alga, the membrane will be damaged or eroded.

1.  Set the barometric pressure and salinity coefficient in the setup menu.
2.  Rinse the electrode with distilled water, place the electrode into the sample solution and stir gently.
3.  If the Auto-Hold option in the setup menu is enabled, the meter will automatically lock the measurement endpoint and show HOLD icon. Press the Meas key to resume measuring. If the option is disabled, the meter will continuously measure and update the readings.
4. Wait for the measurement to stabilize and record the reading.
5. When all of the samples have been measured, rinse the electrode with distilled water. If the meter shows —- indicating the measurement exceeds the range, remove the electrode from the sample solution immediately.

Data Management
The 820 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.

Data Management

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 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. Press the Enter key, the meter shows / .
4. Press the  key to select the / .
5. Press the Enter key to confirm.

Communication
The 820 meter can transfer the data to a computer or import the data to Excel by a DAS software. You are able to 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

• Connect the black port of the data cable to meter and the blue port to computer.
• 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”
• Click the OK, the application starts.
•  Click the Connect, the screen shows “Port is connected”.
•  Click the OK, then click the Receive, the stored data will transfer to 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 transfer is completed, click the Save as Excel, the readings in data sheet will automatically convert to Excel file. Note, once the software is closed, all received data will be lost and can not be recovered.

Appendix

Electrode Maintenance

• Rinse the dissolved oxygen electrode thoroughly with distilled water after use.
• Do not touch the membrane and always keep it is clean and wet.
• If you do not use the electrode for long periods, screw off the membrane cap, rinse the electrode anode, cathode, membrane cap with distilled water and blot dry. Install the electrode and store dry.

Appendix

Preparation of Zero Oxygen Solution
Dissolve 500 mg of the sodium sulfate (Na2SO3) reagent and a small amount of cobalt (II) chloride hexahydrate (CoCl2 • 6H2O) in the 250 ml distilled water, mix the solution until reagent is completely dissolved.
Preparation of Air-Saturated Water
Use an air-pump to blow air into distilled water at least 1 hour, while stirring the solution.

Troubleshooting

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 product in accordance with local regulations at the collecting point specified for electrical and electronic equipment.

Warranty
The warranty period for meter is one year from the date of shipment. Above warranty does not cover the electrode and electrolyte solution. 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 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: banteinstruments@yahoo.com Factory: F3, Building 2, No.2185, Laifang Rd., Shanghai 201615, China Tel: (+86) 21-6404-1598 E-mail: banteinstrument@hotmail.com www.bante- china.com

References

• Bante Instruments | Professional pH, Ion, Conductivity, Dissolved Oxygen, Turbidity Meters and Lab Equipment Manufacture

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