Portable gas detectors are essential tools used to protect workers in various industries from the harmful effects of hazardous gases. There are two types of portable gas detectors: pumped and diffusion-style. Each type has its pros and cons, and understanding the difference between them can help you choose the right detector for your needs.
Pumped Portable Gas Detectors
Pumped portable gas detectors use a built-in pump to draw air through a sample hose and into the detector for analysis. These detectors are ideal for use in confined spaces or areas with limited airflow, where it may be difficult to obtain a sample for analysis. Pumped detectors are typically more accurate than diffusion-style detectors because they can draw in air samples from specific areas and concentrations.
- Can be used in confined spaces or areas with limited airflow
- Can draw in air samples from specific areas and concentrations
- Generally, more accurate than diffusion-style detectors
- Require a power source to operate the built-in pump
- May require more maintenance than diffusion-style detectors due to the pump mechanism
- Can be more expensive than diffusion-style detectors
Diffusion-Style Portable Gas Detectors
Diffusion-style portable gas detectors rely on the natural movement of air to draw samples into the detector for analysis. These detectors are ideal for use in areas with good airflow and can provide continuous monitoring of gas levels in the surrounding area.
- Do not require a power source to operate
- Lower maintenance requirements than pumped detectors
- Can be less expensive than pumped detectors
- Cannot be used in confined spaces or areas with limited airflow
- Samples are collected from the general area and may not be as accurate as those collected by a pumped detector
- May require more frequent calibration due to environmental factors that can affect sensor accuracy
Choosing The Right Detector
The choice between a pumped or diffusion-style portable gas detector will depend on the specific needs of your workplace. If you work in an industry where confined spaces or limited airflow are common, a pumped detector may be the best choice. If your workplace has good airflow and you need continuous monitoring of gas levels, a diffusion-style detector may be more appropriate.
It is important to also consider the type of sensors that the detector uses and whether they are appropriate for the gases that you need to detect. Regular calibration and maintenance of the detector is essential to ensure accurate readings and to keep workers safe.
Pumped and diffusion-style portable gas detectors each have their pros and cons. Understanding the difference between them can help you choose the right detector for your workplace. No matter which type of detector you choose, regular calibration and maintenance is essential to ensure accurate readings and to keep workers safe from the harmful effects of hazardous gases.