1. Introduction
The Maxtec MAXO2+ Oxygen Analyzer is a portable device designed for accurate measurement of oxygen concentration. It is commonly used in various applications, including checking oxygen levels in scuba tanks, medical oxygen sources, and other gas mixtures. This manual provides essential information for the safe and effective use of your analyzer.
2. Safety Information
Please read and understand all safety warnings and instructions before operating the device. Failure to do so may result in injury or damage to the product.
- Do not expose the analyzer to extreme temperatures or direct sunlight.
- Avoid dropping the device or subjecting it to severe impact.
- Ensure the oxygen sensor is properly installed and sealed to prevent inaccurate readings.
- Only use the device for its intended purpose of measuring oxygen concentration.
- Keep the device away from water unless specifically designed for waterproof use (refer to specifications).
- Dispose of batteries and the sensor according to local regulations.
3. Package Contents
Verify that all items are present in your package:
- MAXO2+ Oxygen Analyzer Unit
- Oxygen Sensor (typically sealed in a protective pouch)
- T-Piece Adapter
- Tubing (for inline sampling)
- 3 x AAA Batteries
- Waterproof Carrying Case (for some models)
- Small Screwdriver (for battery/sensor compartment)
4. Product Overview
The MAXO2+ Oxygen Analyzer features a compact design with an easy-to-read digital display. Key components include:
- Digital Display: Shows oxygen concentration in percentage.
- Control Buttons: Typically for power on/off and calibration.
- Sensor Port: Located at the bottom, where the oxygen sensor is installed.
- T-Piece Adapter: Connects to the sensor port for sampling gas from various sources.
- Battery Compartment: Houses the AAA batteries.
Figure 1: Maxtec MAXO2+ Oxygen Analyzer with digital display showing 20.9% oxygen.
5. Setup and Initial Use
Follow these steps to prepare your analyzer for use:
- Install Batteries:
- Locate the battery compartment cover on the back of the analyzer.
- Use the provided small screwdriver to unscrew the retaining screws and remove the cover.
- Insert 3 AAA batteries, ensuring correct polarity.
- Replace the cover and secure it with the screws.
- Install Oxygen Sensor:
- The oxygen sensor is typically packaged separately to prevent premature exposure to air.
- Unscrew the cap from the sensor port at the bottom of the analyzer.
- Carefully remove the new oxygen sensor from its protective packaging.
- Screw the sensor into the sensor port until it is finger-tight. Do not overtighten.
- Attach T-Piece Adapter:
- The T-piece adapter allows for sampling from various gas sources.
- Firmly push the T-piece adapter onto the top port of the analyzer.
- If using tubing for inline sampling, connect one end of the tubing to one side of the T-piece.
Video 1: Demonstration of the Oxygen Analyzer's features, T-piece attachment, and sampling process.
6. Operating Instructions
To ensure accurate readings, proper operation and calibration are crucial.
- Power On: Press the power button (usually marked with an 'I' or power symbol) to turn on the analyzer. The display will illuminate and show the current oxygen concentration.
- Calibration (Fresh Air):
- Before each use, or if the device has been stored for a long time, calibrate the analyzer in fresh air (20.9% oxygen).
- Ensure the T-piece is open to ambient air, or no gas source is connected.
- Press and hold the calibration button (often marked with a 'CAL' or similar symbol) until the display shows "20.9%" or indicates successful calibration. Some models may have a one-button calibration feature.
- Allow the reading to stabilize.
- Taking a Measurement:
- Connect the T-piece adapter to your oxygen source (e.g., scuba tank valve, oxygen concentrator outlet). For scuba tanks, ensure a snug fit with the rubberized dome.
- Slowly open the valve of the oxygen source to allow gas to flow through the T-piece and over the sensor.
- Observe the digital display for the oxygen concentration reading. Allow a few seconds for the reading to stabilize.
- Once the reading is stable, note the measurement.
- Close the oxygen source valve and disconnect the analyzer.
- Power Off: Press and hold the power button until the display turns off.
7. Maintenance
Regular maintenance ensures the longevity and accuracy of your MAXO2+ Oxygen Analyzer.
- Cleaning: Wipe the exterior of the analyzer with a soft, damp cloth. Do not use abrasive cleaners or immerse the device in water.
- Sensor Replacement: Oxygen sensors have a limited lifespan (typically 1-2 years, depending on usage and exposure). Replace the sensor when readings become erratic, calibration fails, or the "low sensor" indicator appears. Follow the sensor installation steps in Section 5.
- Battery Replacement: Replace batteries when the low battery indicator appears on the display or the device fails to power on. Follow the battery installation steps in Section 5.
- Storage: Store the analyzer in its waterproof case in a cool, dry place when not in use. Ensure the sensor port is capped or the T-piece is attached to minimize sensor exposure to ambient air, prolonging its life.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Replace batteries, ensuring correct polarity. |
| Inaccurate or erratic readings. | Sensor needs calibration, old sensor, or sensor not properly installed. | Perform fresh air calibration. If problem persists, replace the sensor. Ensure sensor is tightly screwed in. |
| Calibration fails. | Sensor is at the end of its life, or calibration environment is not fresh air. | Replace the oxygen sensor. Ensure calibration is performed in an area with known 20.9% oxygen. |
| No gas flow through T-piece. | Obstruction in tubing or T-piece, or gas source not properly connected/opened. | Check tubing for kinks. Ensure T-piece is clear. Verify gas source connection and valve. |
9. Specifications
- Brand: Maxtec
- Model Number: R217P42
- Item Weight: 12.8 ounces
- Product Dimensions: 6.4 x 10 x 3.7 inches
- Oxygen Sensor: Honeywell (Made in Germany, as per video)
- Power Source: 3 x AAA Batteries
- Measurement Range: 0-100% Oxygen (as per video)
10. Warranty and Support
For warranty information or technical support, please refer to the manufacturer's official website or contact their customer service department. Keep your purchase receipt as proof of purchase.
