DIVEZONE Oxygen Analyser

DIVEZONE Oxygen analyzer - diving analyzer

Complete set with a sensor and a convenient case

Oxygen analyzers or oxygen content meters measure the O2 (PPO2) content in the air and show it as a percentage on a liquid crystal display. The heart of the analyzer is the oxygen sensor and the electronic element. The sensor creates voltage-varying electrical signals depending on the O2 concentration in the air, and then sends them to the measuring electronic system, which converts the electrical signal into the displayed result on the monitor. Oxygen analyzers are used, among others in medicine and diving. They can be used for continuous or temporary oxygen monitoring in a given room or diving system.

The simplest example of using analyzers in diving is to measure the O2 content in a Nitrox or Trimix cylinder before diving. The analysis is performed by approaching the sensor for a few seconds to the unscrewed valve next to the cylinder and reading the result on the display. The valve should be unscrewed to a small extent, maintaining a constant flow of about 2-4 l / min and remembering that the pressurized mixture flowing out (and other rubbish from the bottle) should not damage the delicate cathode inside the sensor. Another solution is an additional plastic tee put on the valve or screwed into the cylinder valve (DIN), to which the sensor is connected (angularly) or a special flow restrictor guaranteeing a constant flow regardless of the gas pressure in the cylinder. The analysis is performed several times (e.g. 2x) calculating the average of the measurements. Before the analysis, it is always necessary to calibrate the analyzer, preferably on a cylinder with 100% O2, or if we do not have one in the field, calibrate it assuming that the atmospheric air at sea level is 20.9% O2. Analyzers are delicate devices and must be protected against moisture, low and high temperatures and shock. However, when the sensors themselves are not working, it is good to disconnect them from the analyzer and protect them with a special plug, then their lifetime can reach up to 36 months.

Working with a new analyzer may require several minutes of demonstration and then personal practice under the supervision of an experienced person. The analyzer is additionally equipped with a current switch, a potentiometer for calibration and a connecting cable. A 9V alkaline battery is used as standard for power supply.

The kit includes:

• Oxygen analyzer by MOANA-SUB
• box
• Sensor cap
• Tee