4.2.1 Calibration with Bottled Span Gas

??Switch the function switch to “TEST”- position. Instrument will perform an automatic selftest.

??Press “Cal” using the keyboard pin. The display will show “000” indicating the automatic zero adjust.

??When the zero adjust is finished, display will show “GCAL”. ??Mount the cal gas adapter on the sensor.

??Connect the span gas bottle with the cal gas adapter as shown on the picture at page 13. ??Open the span gas bottle and adjust the flow rate to 300 to 400 ml/min.

??Press “Cal”. The display will flash “GCAL” until stable reading has been reached. The instrument will beep and the display will stop flashing.

??Stop the gas flow.

??Press “Cal” once. Press “Cal” again and hold the key down until the display shows the concentration of the span gas [% LEL]. The indicated number will start at zero and increase stepwise until 100 % LEL.

??As soon as the span gas % LEL value is reached, release “Cal” and press “Fct”. The display will show “Stor” indicating that this value has been stored in memory.

Note:

??During calibration the Compur Ex plus checks the sensitivity of the sensor.

If the sensitivity has decreased below a certain level, the display will show an error message “Err1 ” after calibration. In order to erase the error message, switch the instrument “OFF” and back to “ON”. The detector will measure using the new calibration value. “Err1” is meant as a warning that the sensor soon might need replacement.

If the sensor sensitivity is to low, you will receive an error message “Err2”. In this case the sensor needs immediate replacement.

4.2.2 Calibration for Gases not Available as Span Gas

If span gas is not commercially available, the preparation of span gas is a very time consuming and costly procedure. The Compur Ex plus can be calibrated using commercially available span gases by applying the response factor indicated on the sensor (Methane instead of Methanol, Butane for all other components).

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Compur Gas Detector manual Calibration with Bottled Span Gas, Calibration for Gases not Available as Span Gas
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Gas Detector specifications

The Compur Gas Detector is a leading-edge instrument widely utilized in various industries for the detection of hazardous gases. Its significance in ensuring workplace safety cannot be overstated as it plays a crucial role in preventing accidents caused by toxic or flammable gas leaks. This advanced device is designed to provide real-time monitoring and accurate detection of various gases, including carbon monoxide, hydrogen sulfide, methane, and many others.

One of the main features of the Compur Gas Detector is its ability to detect multiple gases simultaneously. This capability is essential for environments where multiple gases may be present, enabling operators to have comprehensive visibility of air quality. The device is equipped with advanced sensor technologies, offering high sensitivity and rapid response times. These sensors are often based on established detection methods such as electrochemical, infrared, or catalytic bead technologies, each suitable for specific gas types.

A notable characteristic of the Compur Gas Detector is its robustness and durability. Constructed with high-quality materials, these detectors can withstand harsh environmental conditions, making them ideal for use in outdoor applications and industrial settings. Many models come with IP-rated enclosures to ensure protection against dust and water ingress, enhancing their longevity.

Another significant attribute is the user-friendly interface of the detector. Most models are designed with clear displays and intuitive controls, allowing for easy operation, even for personnel with minimal training. The integration of alarm systems is a critical feature, providing both visual and audible alerts when gas concentrations exceed predefined safety thresholds. This immediate feedback is essential in initiating timely evacuation or corrective actions.

The Compur Gas Detector also often incorporates advanced data logging capabilities. Users can retrieve historical gas concentration data, facilitating better decision-making regarding safety measures and compliance with regulatory requirements. Furthermore, many models offer connectivity options, enabling integration with central monitoring systems for enhanced data analysis and reporting.

Overall, the Compur Gas Detector stands out due to its sophisticated features, reliable performance, and commitment to safety. Its multi-gas detection capability, durable design, user-friendly interface, and advanced technologies make it an indispensable tool for industries that prioritize worker safety and environmental protection. As industries evolve, the need for efficient and effective gas detection solutions like the Compur Gas Detector remains paramount.
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