4) Release both the CALIBRATE key and the ↓ key.

The unit will automatically enter the “LOCKED” condition and return to normal operation.

2.2.4 Factors Influencing Calibration

The primary factors influencing the MAXO2 analyzer are temperature, pressure, and humidity.

Effects of Temperature

The MAXO2 analyzer will hold calibration and read correctly within ±3% when in thermal equilibrium within the operating temperature range. The device must be thermally stable when calibrated and allowed to thermally stabilize after experiencing temperature changes before readings are accurate. For these reasons, the following is recommended:

1)Allow adequate time for the sensor to equilibrate to a new ambient temperature.

2)For best results, perform the calibration procedure at a temperature close to the temperature where analysis will occur.

Pressure Effect

Readings from the MAXO2 analyzer are proportional to the partial pressure of oxygen. The partial pressure of Oxygen (PO2) is equal to the percentage of oxygen (%O2) times the absolute pressure (AP) at which the sample enviroment is measured. (PO2=%O2 x AP). Thus the readings are proportional to the concentration if the pressure is held constant. Flow rate of sample gas can affect pressure at the sensor in that back pressure at the sensing point may change. For these reasons, the following is recommended:

1)Calibrate the MAXO2 analyzer at the same pressure as the sample gas.

2)If sample gases flow through tubing, use the same apparatus and flow rates when calibrating as when measuring.

3)The MAXO2 analyzer oxygen sensor has been validated at pressures up to 2 atmospheres absolute. Calibration or operation above this pressure is beyond the intended use.

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Hoya OM-25A manual Effects of Temperature, Pressure Effect
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OM-25A specifications

The Hoya OM-25A is a state-of-the-art optical microscope designed for advanced microscopy applications. Renowned for its precision and versatility, the OM-25A is ideal for professionals in various fields, including biology, materials science, and nanotechnology.

One of the main features of the Hoya OM-25A is its high-resolution imaging capabilities. The microscope is equipped with a powerful objective lens system that allows users to achieve magnifications of up to 2500x. This high degree of magnification makes it suitable for observing intricate details of specimens, from cellular structures to the fine characteristics of materials.

The OM-25A incorporates advanced illumination technologies, including LED and halogen light sources, which provide bright and stable lighting necessary for clear imaging. The innovative lighting system not only enhances the visibility of specimens but also reduces heat production, protecting sensitive samples from damage during prolonged observation.

Another significant feature of the Hoya OM-25A is its ergonomic design. The microscope includes a comfortable viewing angle and adjustable eyepieces, which facilitate extended use without causing strain to the user. Additionally, the intuitive control knobs and well-placed buttons ensure ease of operation, making the microscope accessible even to those who are not highly experienced in microscopy.

The OM-25A also integrates digital technology for enhanced functionality. It is compatible with various imaging software that allows users to capture, analyze, and document their findings effortlessly. This feature is particularly advantageous for educational settings and research laboratories, where documentation and data sharing are crucial.

Moreover, this model is designed with durability in mind. Its sturdy construction in combination with high-quality materials ensures longevity and reliability in demanding environments. The easy maintenance procedures also contribute to its practicality, allowing users to keep the microscope in optimal condition over time.

In summary, the Hoya OM-25A is a remarkable microscope that excels in delivering high-resolution images, advanced lighting technology, user-friendly design, and digital compatibility. With its robust build and versatile features, the OM-25A is a preferred choice for scientists and researchers aiming to explore the microscopic world with clarity and precision. Whether for routine examinations or specialized studies, this microscope meets a diverse range of needs in modern optical microscopy.
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