Uses of Specialty Gases in Industries and Choosing the Right Gas
Calibration gas is a pure or mixture of gases used in analytical methods such as chromatography. These gases are prepared in lab to remove unwanted
Calibration gases are also referred to as specialty gases, instrumentation gases, or zero gases. Specialty gases are primarily high-quality gases used for specific industrial applications. Dedicated pressure regulators, distribution systems, and other proper specialty equipment should always be used with specialty gases to ensure the gas grade is not compromised through contact with substandard components.
Specialty pure gases
Pure gases used as support gases for instruments such as detectors, chromatography, mass spectrometer, and analyzers are considered as specialty gases. Specialty gas suppliers usually use their instruments to specify the purity level of the pure gas. Specialty pure gases are used to manufactures semiconductors.
Specialty gas suppliers provide varying grades of specialty pure gases. The purity levels range from high purity to ultra-high purity to research-grade. Deciding which calibration gas is suitable for your needs can be a difficult task. Therefore, it is very important to understand how to select calibration gas depending on your facility. This will go a long way in saving money and time. Below are some important things you should know when determining which specialty gas is suitable for your needs.
Single Gas detector
Determining the right specialty gas for a single gas detector or multi-gas detector is one of the important factors to consider. As the name suggests, single gas detector requires single gas to calibrate. Singles gases include oxygen, flammable gas, and toxic gas. Often, single flammable gas such as butane or methane calibrations gases are used to calibrate single flammable gas detectors.
Nitrogen Calibration Gas
A pure nitrogen calibration gas may be used to calibrate a single nitrogen detector. Oxygen based gas can also be used. Similarly, a toxic single gas detector is calibrated using single toxic gas. Typically, specialty gas is determined by type of toxic gas designed for the single gas detector. This means that you need carbon monoxide specialty gas to calibrate single gas carbon monoxide detector. The same case applies to hydrogen sulfide detector. It is important to consult a professional to determine the proper gas and right gas handling equipment such as disposable cylinders.
Right Gas to Use
When calibration gas goes bad, it does not show any telltale sign. Therefore, you should be in a position to determine when a calibration gas has gone bad.
Calibration is measuring accuracy of an instrument relative to a known concentration of the substance. The detectors compare the response of the sensor with response of calibration gas of known concentration to determine the concentration of the substance in the air. Essentially, gas detectors are used to detect presence of combustible and toxic substances. They also detect oxygen deficiency. It is impractical for workers to use their senses to detect odorless hazards.
How do you know that your calibration gas is expired? Well, a reputable gas company will mark an expiry date for their calibration gas. The expiry date is very crucial. Therefore, it is imperative to ensure that your calibration gas comes from reputable specialty gas supplier. More importantly, you should eschew using uncertified gas that expiration date cannot be verified.
Essentially, all documentation, including calibration tests and bump testing should be well documented. Documenting your calibration and using calibration that is in proper condition protects your workers from harmful pollutants. It also ensures your company is not faced with litigations.
Gas detectors protect workers from hazardous air pollutants in workplaces. Therefore, it is vital to maintain according to the recommendations and instructions given by specialty gas suppliers.
An inaccurate detector due to irregular calibration can cause serious accidents. Excessive toxic substances and exposure to oxygen-deficient environment can cause detrimental health effects or even death. Similarly, highly combustible gases can explode causing serious injuries, destruction of properties and loss of life.
Specialty gas suppliers recommend sensor accuracy to be verified before use every day. Testing the detector with a known calibration or test gas is the surest way to ensure it is accurate. The detector sensor should be exposed to known test substance concentration during testing. This way, you can determine if the sensor is operating properly.