1. Introduction
The Bante820 is an economical portable dissolved oxygen meter designed for accurate measurement of dissolved oxygen concentration and percentage saturation in various applications. It features automatic temperature compensation, salinity, and barometric pressure compensations to ensure reliable results. This manual provides detailed instructions for the proper setup, operation, and maintenance of your Bante820 DO meter.
2. Features
- Equipped with a backlit LCD display for clear readings.
- 1 or 2 points calibration using air-saturated water or zero oxygen solution.
- Salinity and barometric pressure compensations to eliminate measurement errors.
- Automatic temperature compensation (0 to 50°C / 32 to 122°F) for accurate readings.
- Auto-Read function senses and locks the measurement endpoint.
- Auto-Power Off feature conserves battery life.
- Setup menu allows configuration of calibration points, temperature unit, and other parameters.
- Reset function to restore all settings to factory defaults.
- Expanded memory stores or recalls up to 100 data sets.
- USB communication interface for data transfer or connecting a power adapter.
3. Package Contents
Upon unpacking, please verify that all items listed below are present and in good condition:
- Bante820 Portable Dissolved Oxygen Meter unit
- Dissolved Oxygen Probe
- Instruction Manual
- Calibration Solution Bottle
- USB Communication Cable (for data transfer or power adapter connection)
- Carrying Case
- Note: 3x 1.5V AA batteries are required but not included.
4. Specifications
| Parameter | Value |
|---|---|
| Model | Bante820 |
| Dissolved Oxygen Range | 0.00 to 20.00 mg/L |
| Dissolved Oxygen Resolution | 0.01 mg/L |
| Dissolved Oxygen Accuracy | ±0.5 mg/L |
| % Saturation of Oxygen Range | 0.0 to 200.0% |
| % Saturation of Oxygen Resolution | 0.1% |
| % Saturation of Oxygen Accuracy | ±2.0% |
| Calibration Points | 1 or 2 points |
| Temperature Compensation | 0 to 50°C / 32 to 122°F, automatic |
| Pressure Correction | 60.0 to 112.5 kPa / 450 to 850 mmHg, manual |
| Salinity Correction | 0.0 to 50.0 g/L, manual |
| Memory | Stores up to 100 data sets |
| Output | USB communication interface |
| Connector | 6-pin mini-DIN |
| Display | Custom LCD (80×60mm) |
| Power | 3×1.5V AA batteries or DC5V power adapter |
| Battery Life | Approximately 150 hours (turn off the backlight) |
| Dimensions | 170(L)×85(W)×30(H)mm |
| Weight | 300g |
5. Setup
- **Install Batteries**: Open the battery compartment on the back of the meter and insert three 1.5V AA batteries, observing the correct polarity. Close the compartment securely. Alternatively, connect the meter to a DC5V power adapter via the USB communication interface.
- **Connect DO Probe**: Connect the dissolved oxygen probe to the designated 6-pin mini-DIN connector on the top of the meter. Ensure a firm connection.
- **Power On**: Press the MEAS button to turn on the meter. The backlit LCD display will illuminate.
- **Initial Settings**: Navigate through the setup menu (refer to Section 6.2) to configure parameters such as temperature unit (°C or °F) if necessary.
6. Operating Instructions
6.1 Basic Measurement
- **Prepare Probe**: Ensure the DO probe is properly prepared and calibrated (refer to Section 7).
- **Immerse Probe**: Submerge the DO probe into the sample solution, ensuring the sensing element is fully immersed and there are no air bubbles trapped on the membrane.
- **Read Measurement**: The meter will display the dissolved oxygen concentration (mg/L) and percentage saturation (%). Allow the reading to stabilize. The Auto-Read function will sense and lock the stable measurement endpoint.
- **Store Data**: Press the MEM button to store the current reading in the meter's memory.
- **Recall Data**: Press the MR button to recall stored data sets.
6.2 Button Functions
- MEAS: Press to freeze or release the measured value.
- MEM: Press to store the current reading.
- MR: Press to recall the stored data.
- MODE/°C: Press to select the measurement mode. Press and hold to set the temperature unit.
- CAL/lb: Press to enter calibration mode.
- ENTER: Confirm selection or setting.
- ▲ / ▼: Navigate menus or adjust values.
7. Calibration
Regular calibration is essential for accurate measurements. The Bante820 supports 1 or 2 points calibration.
7.1 Calibration Procedure
- **Prepare Calibration Solutions**: Use air-saturated water for 100% saturation calibration and a zero oxygen solution for 0% saturation calibration.
- **Enter Calibration Mode**: Press the CAL/lb button to enter the calibration mode.
- **Perform 100% Saturation Calibration**:
- Immerse the DO probe in air-saturated water.
- Follow the on-screen prompts to stabilize the reading.
- Confirm the calibration point.
- **Perform 0% Saturation Calibration (Optional)**:
- After 100% calibration, immerse the DO probe in zero oxygen solution.
- Follow the on-screen prompts to stabilize the reading.
- Confirm the calibration point.
- **Exit Calibration Mode**: The meter will automatically return to measurement mode after successful calibration.
7.2 Compensations
- **Salinity Correction**: Manually adjust the salinity value (0.0 to 50.0 g/L) in the setup menu to compensate for the effect of salt content on dissolved oxygen readings.
- **Barometric Pressure Correction**: Manually adjust the barometric pressure value (60.0 to 112.5 kPa / 450 to 850 mmHg) in the setup menu to compensate for atmospheric pressure changes.
8. Maintenance
- **Probe Care**: Regularly clean the DO probe membrane and ensure it is free from debris or biological growth. Replace the membrane and electrolyte solution as recommended by the probe manufacturer.
- **Battery Replacement**: When the battery indicator shows low power, replace the three 1.5V AA batteries promptly to ensure continuous operation.
- **Storage**: Store the meter and probe in a clean, dry environment, preferably in its carrying case, when not in use. Ensure the probe is stored according to its specific instructions (e.g., in a wetting cap with solution).
- **Cleaning the Meter**: Wipe the meter's exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter does not power on | Dead or incorrectly installed batteries; Power adapter issue. | Check battery polarity and replace if dead. Ensure power adapter is correctly connected and functional. |
| Inaccurate or unstable readings | Probe not calibrated; Dirty or damaged probe membrane; Incorrect salinity/pressure compensation; Air bubbles on membrane. | Calibrate the probe. Clean or replace the probe membrane. Verify salinity and barometric pressure settings. Gently agitate the probe to remove air bubbles. |
| "Error" message on display | Calibration error; Probe malfunction. | Repeat calibration carefully. Check probe connection and condition. If error persists, contact support. |
| Data not storing/recalling | Memory full; Incorrect button operation. | Ensure memory is not full (delete old data if needed). Refer to Section 6.1 for correct data storage/recall procedure. |
10. User Tips
No specific user tips were available from provided reviews or Q&A. However, general best practices for dissolved oxygen meters include:
- Always calibrate your meter before critical measurements or if there has been a significant change in ambient temperature or altitude.
- Ensure the DO probe membrane is clean and free from damage. A damaged membrane will lead to inaccurate readings.
- When taking measurements, gently stir the sample or move the probe to ensure a representative reading and prevent oxygen depletion around the probe.
- Keep the meter and probe away from direct sunlight and extreme temperatures during operation and storage.
11. Warranty and Support
The Bante820 Portable Dissolved Oxygen Meter comes with a 1-year warranty from the date of purchase, covering manufacturing defects. This warranty does not cover damage caused by misuse, accident, unauthorized modification, or normal wear and tear.
For technical support, warranty claims, or any questions regarding your product, please contact customer service using the information below:
- WhatsApp: +86 16633953613
- Tel: +86 166 3395 3613
- Email: 1428040867@qq.com
